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// SPDX-FileCopyrightText: 2023 Stake Together Labs <[email protected]>
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.22;

import '@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol';
import '@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/utils/PausableUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/utils/ReentrancyGuardUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol';
import '@openzeppelin/contracts-upgradeable/token/ERC20/extensions/ERC20BurnableUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/token/ERC20/extensions/ERC20PermitUpgradeable.sol';
import '@openzeppelin/contracts/utils/math/Math.sol';
import '@openzeppelin/contracts/utils/Address.sol';

import '../interfaces/IDepositContract.sol';
import '../interfaces/IAirdrop.sol';
import '../interfaces/IRouter.sol';
import '../interfaces/IStakeTogether.sol';
import '../interfaces/IWithdrawals.sol';

/// @title StakeTogether Pool Contract
/// @notice The StakeTogether contract is the primary entry point for interaction with the StakeTogether protocol.
/// It provides functionalities for staking, withdrawals, fee management, and interactions with pools and validators.
/// @custom:security-contact [email protected]
contract StakeTogetherV3 is
  Initializable,
  ERC20Upgradeable,
  ERC20BurnableUpgradeable,
  PausableUpgradeable,
  AccessControlUpgradeable,
  ERC20PermitUpgradeable,
  UUPSUpgradeable,
  ReentrancyGuardUpgradeable,
  IStakeTogether
{
  bytes32 public constant UPGRADER_ROLE = keccak256('UPGRADER_ROLE'); /// Role for managing upgrades.
  bytes32 public constant ADMIN_ROLE = keccak256('ADMIN_ROLE'); /// Role for administration.
  bytes32 public constant POOL_MANAGER_ROLE = keccak256('POOL_MANAGER_ROLE'); /// Role for managing pools.
  bytes32 public constant VALIDATOR_ORACLE_ROLE = keccak256('VALIDATOR_ORACLE_ROLE'); /// Role for managing validator oracles.
  bytes32 public constant VALIDATOR_ORACLE_MANAGER_ROLE = keccak256('VALIDATOR_ORACLE_MANAGER_ROLE'); /// Role for managing validator oracle managers.
  bytes32 public constant VALIDATOR_ORACLE_SENTINEL_ROLE = keccak256('VALIDATOR_ORACLE_SENTINEL_ROLE'); /// Role for sentinel functionality in validator oracle management.
  bytes32 public constant ANTI_FRAUD_MANAGER_ROLE = keccak256('ANTI_FRAUD_MANAGER_ROLE'); // Role for  anti-fraud managers.
  bytes32 public constant ANTI_FRAUD_SENTINEL_ROLE = keccak256('ANTI_FRAUD_SENTINEL_ROLE'); // Role for sentinel functionality in anti-fraud management.

  uint256 public version; /// Contract version.

  IAirdrop public airdrop; /// Airdrop contract instance.
  IDepositContract public deposit; /// Deposit contract interface.
  IRouter public router; /// Address of the contract router.
  IWithdrawals public withdrawals; /// Withdrawals contract instance.

  bytes public withdrawalCredentials; /// Credentials for withdrawals.
  uint256 public beaconBalance; /// Beacon balance (includes transient Beacon balance on router).
  uint256 public withdrawBalance; /// Pending withdraw balance to be withdrawn from router.

  Config public config; /// Configuration settings for the protocol.

  mapping(address => uint256) public shares; /// Mapping of addresses to their shares.
  uint256 public totalShares; /// Total number of shares.
  mapping(address => mapping(address => uint256)) private allowances; /// Allowances mapping.

  mapping(address => uint256) private lastOperationBlock; // Mapping of addresses to their last operation block.
  mapping(address => uint256) private nextWithdrawBlock; // Mapping the next block for withdraw
  mapping(address => uint256) private nextWithdrawBeaconBlock; // Mapping the next block for withdraw from beacon
  uint256 public lastResetBlock; /// Block number of the last reset.
  uint256 public totalDeposited; /// Total amount deposited.
  uint256 public totalWithdrawnPool; /// Total amount withdrawn pool.
  uint256 public totalWithdrawnValidator; /// Total amount withdrawn validator.

  mapping(address => bool) public pools; /// Mapping of pool addresses.

  address[] private validatorsOracle; /// List of validator oracles.
  mapping(address => uint256) private validatorsOracleIndices; /// Mapping of validator oracle indices.
  uint256 public currentOracleIndex; /// Current index of the oracle.

  mapping(bytes => bool) public validators; /// Mapping of validators.

  mapping(FeeRole => address payable) private feesRole; /// Mapping of fee roles to addresses.
  mapping(FeeType => Fee) private fees; /// Mapping of fee types to fee details.

  mapping(address => bool) private antiFraudList; /// Mapping of anti-fraud addresses.

  /// @custom:oz-upgrades-unsafe-allow constructor
  constructor() {
    _disableInitializers();
  }

  /// @notice Stake Together Pool Initialization
  function initializeV3() public onlyRole(UPGRADER_ROLE) {
    version = 3;
  }

  /// @notice Pauses the contract, preventing certain actions.
  /// @dev Only callable by the admin role.
  function pause() external onlyRole(ADMIN_ROLE) {
    _pause();
  }

  /// @notice Unpauses the contract, allowing actions to resume.
  /// @dev Only callable by the admin role.
  function unpause() external onlyRole(ADMIN_ROLE) {
    _unpause();
  }

  /// @notice Internal function to authorize an upgrade.
  /// @dev Only callable by the upgrader role.
  /// @param _newImplementation Address of the new contract implementation.
  function _authorizeUpgrade(address _newImplementation) internal override onlyRole(UPGRADER_ROLE) {}

  /// @notice Receive function to accept incoming ETH transfers.
  /// @dev Non-reentrant to prevent re-entrancy attacks.
  receive() external payable {
    emit ReceiveEther(msg.value);
  }

  modifier nonFlashLoan() {
    if (block.number <= lastOperationBlock[msg.sender]) {
      revert FlashLoan();
    }
    _;
  }

  /************
   ** CONFIG **
   ************/

  /// @notice Sets the configuration for the Stake Together Protocol.
  /// @dev Only callable by the admin role.
  /// @param _config Configuration settings to be applied.
  function setConfig(Config memory _config) external onlyRole(ADMIN_ROLE) {
    if (_config.poolSize < config.validatorSize) revert InvalidSize();
    config = _config;
    emit SetConfig(_config);
  }

  /************
   ** SHARES **
   ************/

  /// @notice Returns the total supply of the pool (contract balance + beacon balance).
  /// @return Total supply value.
  function totalSupply() public view override(ERC20Upgradeable, IStakeTogether) returns (uint256) {
    return address(this).balance + beaconBalance - withdrawBalance;
  }

  ///  @notice Calculates the shares amount by wei.
  /// @param _account The address of the account.
  /// @return Balance value of the given account.
  function balanceOf(
    address _account
  ) public view override(ERC20Upgradeable, IStakeTogether) returns (uint256) {
    return weiByShares(shares[_account]);
  }

  /// @notice Calculates the wei amount by shares.
  /// @param _sharesAmount Amount of shares.
  /// @return Equivalent amount in wei.
  function weiByShares(uint256 _sharesAmount) public view returns (uint256) {
    return Math.mulDiv(_sharesAmount, totalSupply(), totalShares, Math.Rounding.Ceil);
  }

  /// @notice Calculates the shares amount by wei.
  /// @param _amount Amount in wei.
  /// @return Equivalent amount in shares.
  function sharesByWei(uint256 _amount) public view returns (uint256) {
    return Math.mulDiv(_amount, totalShares, totalSupply());
  }

  /// @notice Transfers an amount of wei to the specified address.
  /// @param _to The address to transfer to.
  /// @param _amount The amount to be transferred.
  /// @return True if the transfer was successful.
  function transfer(
    address _to,
    uint256 _amount
  ) public override(ERC20Upgradeable, IStakeTogether) returns (bool) {
    if (isListedInAntiFraud(msg.sender)) revert ListedInAntiFraud();
    if (isListedInAntiFraud(_to)) revert ListedInAntiFraud();
    _transfer(msg.sender, _to, _amount);
    return true;
  }

  /// @notice Transfers tokens from one address to another using an allowance mechanism.
  /// @param _from Address to transfer from.
  /// @param _to Address to transfer to.
  /// @param _amount Amount of tokens to transfer.
  /// @return A boolean value indicating whether the operation succeeded.
  function transferFrom(
    address _from,
    address _to,
    uint256 _amount
  ) public override(ERC20Upgradeable, IStakeTogether) returns (bool) {
    if (isListedInAntiFraud(_from)) revert ListedInAntiFraud();
    if (isListedInAntiFraud(_to)) revert ListedInAntiFraud();
    if (isListedInAntiFraud(msg.sender)) revert ListedInAntiFraud();
    _spendAllowance(_from, msg.sender, _amount);
    _transfer(_from, _to, _amount);
    return true;
  }

  /// @notice Transfers an amount of wei from one address to another.
  /// @param _from The address to transfer from.
  /// @param _to The address to transfer to.
  /// @param _amount The amount to be transferred.
  function _update(
    address _from,
    address _to,
    uint256 _amount
  ) internal override nonReentrant nonFlashLoan whenNotPaused {
    if (block.number < nextWithdrawBlock[msg.sender]) revert EarlyTransfer();
    lastOperationBlock[msg.sender] = block.number;
    uint256 _sharesToTransfer = sharesByWei(_amount);
    _transferShares(_from, _to, _sharesToTransfer);
    emit Transfer(_from, _to, _amount);
  }

  /// @notice Internal function to handle the transfer of shares.
  /// @param _from The address to transfer from.
  /// @param _to The address to transfer to.
  /// @param _sharesAmount The number of shares to be transferred.
  function _transferShares(address _from, address _to, uint256 _sharesAmount) private whenNotPaused {
    if (isListedInAntiFraud(_from)) revert ListedInAntiFraud();
    if (isListedInAntiFraud(_to)) revert ListedInAntiFraud();
    if (_from == address(0)) revert ZeroAddress();
    if (_to == address(0)) revert ZeroAddress();
    if (_sharesAmount > shares[_from]) revert InsufficientShares();
    shares[_from] -= _sharesAmount;
    shares[_to] += _sharesAmount;
    emit TransferShares(_from, _to, _sharesAmount);
  }

  /// @notice Returns the remaining number of tokens that an spender is allowed to spend on behalf of a token owner.
  /// @param _account Address of the token owner.
  /// @param _spender Address of the spender.
  /// @return A uint256 value representing the remaining number of tokens available for the spender.
  function allowance(
    address _account,
    address _spender
  ) public view override(ERC20Upgradeable, IStakeTogether) returns (uint256) {
    return allowances[_account][_spender];
  }

  /// @notice Sets the amount `_amount` as allowance of `_spender` over the caller's tokens.
  /// @param _spender Address of the spender.
  /// @param _amount Amount of allowance to be set.
  /// @return A boolean value indicating whether the operation succeeded.
  function approve(
    address _spender,
    uint256 _amount
  ) public override(ERC20Upgradeable, IStakeTogether) returns (bool) {
    _approve(msg.sender, _spender, _amount, true);
    return true;
  }

  /// @notice Internal function to set the approval amount for a given spender and owner.
  /// @param _account Address of the token owner.
  /// @param _spender Address of the spender.
  /// @param _amount Amount of allowance to be set.
  function _approve(
    address _account,
    address _spender,
    uint256 _amount,
    bool emitEvent
  ) internal override {
    if (_account == address(0)) revert ZeroAddress();
    if (_spender == address(0)) revert ZeroAddress();
    allowances[_account][_spender] = _amount;
    if (emitEvent) {
      emit Approval(_account, _spender, _amount);
    }
  }

  /// @notice Internal function to deduct the allowance for a given spender, if any.
  /// @param _account Address of the token owner.
  /// @param _spender Address of the spender.
  /// @param _amount Amount to be deducted from the allowance.
  function _spendAllowance(address _account, address _spender, uint256 _amount) internal override {
    uint256 currentAllowance = allowances[_account][_spender];
    if (currentAllowance != ~uint256(0)) {
      if (currentAllowance < _amount) revert InsufficientAllowance();
      _approve(_account, _spender, currentAllowance - _amount, true);
    }
  }

  /// @notice Internal function to mint shares to a given address.
  /// @param _to Address to mint shares to.
  /// @param _sharesAmount Amount of shares to mint.
  function _mintShares(address _to, uint256 _sharesAmount) private whenNotPaused {
    if (_to == address(0)) revert ZeroAddress();
    shares[_to] += _sharesAmount;
    totalShares += _sharesAmount;
    emit MintShares(_to, _sharesAmount);
    emit Transfer(address(0), _to, weiByShares(_sharesAmount));
  }

  /// @notice Internal function to burn shares from a given address.
  /// @param _account Address to burn shares from.
  /// @param _sharesAmount Amount of shares to burn.
  function _burnShares(address _account, uint256 _sharesAmount) private whenNotPaused {
    if (_account == address(0)) revert ZeroAddress();
    if (_sharesAmount > shares[_account]) revert InsufficientShares();
    shares[_account] -= _sharesAmount;
    totalShares -= _sharesAmount;
    emit BurnShares(_account, _sharesAmount);
    emit Transfer(_account, address(0), weiByShares(_sharesAmount));
  }

  /***********
   ** STAKE **
   ***********/

  /// @notice Deposits the base amount to the specified address.
  /// @param _to The address to deposit to.
  /// @param _depositType The type of deposit (Pool or Donation).
  /// @param _referral The referral address.
  function _depositBase(
    address _to,
    DepositType _depositType,
    address _pool,
    bytes calldata _referral
  ) private {
    if (!config.feature.Deposit) revert FeatureDisabled();
    if (!(totalSupply() > 0)) revert ZeroSupply();
    if (antiFraudList[_to]) revert ListedInAntiFraud();
    if (msg.value < config.minDepositAmount) revert LessThanMinimumDeposit();
    if (!pools[_pool]) revert PoolNotFound();

    _resetLimits();
    totalDeposited += msg.value;
    lastOperationBlock[msg.sender] = block.number;
    nextWithdrawBlock[msg.sender] = block.number + config.withdrawDelay;

    if (totalDeposited > config.depositLimit) {
      emit DepositLimitWasReached(_to, msg.value);
      revert DepositLimitReached();
    }

    emit DepositBase(_to, msg.value, _depositType, _pool, _referral);
    _processFeeEntry(_to, msg.value);
  }

  /// @notice Deposits into the pool with specific delegations.
  /// @param _pool The address of the pool to deposit to.
  /// @param _referral The referral address.
  function depositPool(
    address _pool,
    bytes calldata _referral
  ) external payable nonReentrant nonFlashLoan whenNotPaused {
    _depositBase(msg.sender, DepositType.Pool, _pool, _referral);
  }

  /// @notice Deposits a donation to the specified address.
  /// @param _to The address to deposit to.
  /// @param _referral The referral address.
  function depositDonation(
    address _to,
    address _pool,
    bytes calldata _referral
  ) external payable nonReentrant nonFlashLoan whenNotPaused {
    _depositBase(_to, DepositType.Donation, _pool, _referral);
  }

  /// @notice Withdraws the base amount with the specified withdrawal type.
  /// @param _amount The amount to withdraw.
  /// @param _withdrawType The type of withdrawal (Pool or Validator).
  function _withdrawBase(uint256 _amount, WithdrawType _withdrawType, address _pool) private {
    if (antiFraudList[msg.sender]) revert ListedInAntiFraud();
    if (_amount == 0) revert ZeroAmount();
    if (_amount > balanceOf(msg.sender)) revert InsufficientAccountBalance();
    if (_amount < config.minWithdrawAmount) revert LessThanMinimumWithdraw();
    if (block.number < nextWithdrawBlock[msg.sender]) revert EarlyTransfer();

    _resetLimits();
    lastOperationBlock[msg.sender] = block.number;

    if (_withdrawType == WithdrawType.Pool) {
      totalWithdrawnPool += _amount;
      if (totalWithdrawnPool > config.withdrawalPoolLimit) {
        emit WithdrawalsLimitWasReached(msg.sender, _amount, _withdrawType);
        revert WithdrawalsPoolLimitReached();
      }
    } else {
      totalWithdrawnValidator += _amount;
      if (totalWithdrawnValidator > config.withdrawalValidatorLimit) {
        emit WithdrawalsLimitWasReached(msg.sender, _amount, _withdrawType);
        revert WithdrawalsValidatorLimitWasReached();
      }
    }

    emit WithdrawBase(msg.sender, _amount, _withdrawType, _pool);
    uint256 sharesToBurn = Math.mulDiv(_amount, shares[msg.sender], balanceOf(msg.sender));
    _burnShares(msg.sender, sharesToBurn);
  }

  /// @notice Withdraws from the pool with specific delegations and transfers the funds to the sender.
  /// @param _amount The amount to withdraw.
  /// @param _pool The address of the pool to withdraw from.
  function withdrawPool(uint256 _amount, address _pool) external nonReentrant nonFlashLoan whenNotPaused {
    if (!config.feature.WithdrawPool) revert FeatureDisabled();
    if (_amount > address(this).balance) revert InsufficientPoolBalance();
    _withdrawBase(_amount, WithdrawType.Pool, _pool);
    Address.sendValue(payable(msg.sender), _amount);
  }

  /// @notice Withdrawals from the beacon chain.
  /// @param _amount The amount to withdraw.
  /// @param _pool The address of the pool to withdraw from.
  function withdrawBeacon(
    uint256 _amount,
    address _pool
  ) external nonReentrant nonFlashLoan whenNotPaused {
    if (!config.feature.WithdrawBeacon) revert FeatureDisabled();
    if (_amount <= address(this).balance) revert WithdrawFromPool();
    if (_amount + withdrawBalance > beaconBalance) revert InsufficientBeaconBalance();
    nextWithdrawBeaconBlock[msg.sender] = block.number + config.withdrawBeaconDelay;
    _withdrawBase(_amount, WithdrawType.Validator, _pool);
    _setWithdrawBalance(withdrawBalance + _amount);

    withdrawals.mint(msg.sender, _amount);
  }

  /// @notice Resets the daily limits for deposits and withdrawals.
  function _resetLimits() private {
    if (block.number > lastResetBlock + config.blocksPerDay) {
      totalDeposited = 0;
      totalWithdrawnPool = 0;
      totalWithdrawnValidator = 0;
      lastResetBlock = block.number;
    }
  }

  /// @notice Get the next withdraw block for account
  /// @param _account the address of the account.
  function getWithdrawBlock(address _account) external view returns (uint256) {
    return nextWithdrawBlock[_account];
  }

  /// @notice Get the next withdraw beacon block for account
  /// @param _account the address of the account.
  function getWithdrawBeaconBlock(address _account) external view returns (uint256) {
    return nextWithdrawBeaconBlock[_account];
  }

  /****************
   ** ANTI-FRAUD **
   ****************/

  /// @notice Adds an address to the anti-fraud list.
  /// @dev Only a user with the ANTI_FRAUD_SENTINEL_ROLE or ANTI_FRAUD_MANAGER_ROLE can add addresses.
  /// @param _account The address to be added to the anti-fraud list.
  function addToAntiFraud(address _account) external {
    if (!hasRole(ANTI_FRAUD_SENTINEL_ROLE, msg.sender) && !hasRole(ANTI_FRAUD_MANAGER_ROLE, msg.sender))
      revert NotAuthorized();
    if (_account == address(0)) revert ZeroAddress();
    antiFraudList[_account] = true;
    emit SetAntiFraudStatus(msg.sender, _account, true);
  }

  /// @notice Removes an address from the anti-fraud list.
  /// @dev Only a user with the ANTI_FRAUD_MANAGER_ROLE can remove addresses.
  /// @param _account The address to be removed from the anti-fraud list.
  function removeFromAntiFraud(address _account) external {
    if (!hasRole(ANTI_FRAUD_MANAGER_ROLE, msg.sender)) revert NotAuthorized();
    if (_account == address(0)) revert ZeroAddress();
    if (!antiFraudList[_account]) revert NotInAntiFraudList();
    antiFraudList[_account] = false;
    emit SetAntiFraudStatus(msg.sender, _account, false);
  }

  /// @notice Check if an address is listed in the anti-fraud list.
  /// @param _account The address to be checked.
  /// @return true if the address is in the anti-fraud list, false otherwise.
  function isListedInAntiFraud(address _account) public view returns (bool) {
    return antiFraudList[_account];
  }

  /***********
   ** POOLS **
   ***********/

  /// @notice Adds a permissionless pool with a specified address and listing status if feature enabled.
  /// @param _pool The address of the pool to add.
  /// @param _listed The listing status of the pool.
  /// @param _social The kind of pool.
  /// @param _index Checked if the pool is a index
  function addPool(
    address _pool,
    bool _listed,
    bool _social,
    bool _index
  ) external payable nonReentrant whenNotPaused nonFlashLoan {
    if (_pool == address(0)) revert ZeroAddress();
    if (pools[_pool]) revert PoolExists();
    if (!hasRole(POOL_MANAGER_ROLE, msg.sender) || msg.value > 0) {
      if (!config.feature.AddPool) revert FeatureDisabled();
      if (msg.value != fees[FeeType.Pool].value) revert InvalidValue();
      _processFeePool();
    }
    pools[_pool] = true;
    lastOperationBlock[msg.sender] = block.number;
    emit AddPool(_pool, _listed, _social, _index, msg.value);
  }

  /// @notice Removes a pool by its address.
  /// @param _pool The address of the pool to remove.
  function removePool(address _pool) external nonFlashLoan whenNotPaused onlyRole(POOL_MANAGER_ROLE) {
    if (!pools[_pool]) revert PoolNotFound();
    pools[_pool] = false;
    lastOperationBlock[msg.sender] = block.number;
    emit RemovePool(_pool);
  }

  /// @notice Updates delegations for the sender's address.
  /// @param _delegations The array of delegations to update.
  function updateDelegations(Delegation[] memory _delegations) external {
    uint256 totalPercentage = 0;
    if (shares[msg.sender] > 0) {
      if (_delegations.length > config.maxDelegations) revert MaxDelegations();
      for (uint256 i = 0; i < _delegations.length; i++) {
        if (!pools[_delegations[i].pool]) revert PoolNotFound();
        totalPercentage += _delegations[i].percentage;
      }
      if (totalPercentage != 1 ether) revert InvalidTotalPercentage();
    } else {
      if (_delegations.length != 0) revert ShouldBeZeroLength();
    }
    emit UpdateDelegations(msg.sender, _delegations);
  }

  /***********************
   ** VALIDATORS ORACLE **
   ***********************/

  /// @notice Adds a new validator oracle by its address.
  /// @param _account The address of the validator oracle to add.
  function addValidatorOracle(address _account) external onlyRole(VALIDATOR_ORACLE_MANAGER_ROLE) {
    if (validatorsOracleIndices[_account] != 0) revert ValidatorOracleExists();

    validatorsOracle.push(_account);
    validatorsOracleIndices[_account] = validatorsOracle.length;

    _grantRole(VALIDATOR_ORACLE_ROLE, _account);
    emit AddValidatorOracle(_account);
  }

  /// @notice Removes a validator oracle by its address.
  /// @param _account The address of the validator oracle to remove.
  function removeValidatorOracle(address _account) external onlyRole(VALIDATOR_ORACLE_MANAGER_ROLE) {
    if (validatorsOracleIndices[_account] == 0) revert ValidatorOracleNotFound();

    uint256 index = validatorsOracleIndices[_account] - 1;

    if (index < validatorsOracle.length - 1) {
      address lastAddress = validatorsOracle[validatorsOracle.length - 1];
      validatorsOracle[index] = lastAddress;
      validatorsOracleIndices[lastAddress] = index + 1;
    }

    validatorsOracle.pop();
    delete validatorsOracleIndices[_account];

    bool isCurrentOracle = (index == currentOracleIndex);

    if (isCurrentOracle) {
      currentOracleIndex = (currentOracleIndex + 1) % validatorsOracle.length;
    }

    _revokeRole(VALIDATOR_ORACLE_ROLE, _account);
    emit RemoveValidatorOracle(_account);
  }

  /// @notice Checks if an address is a validator oracle.
  /// @param _account The address to check.
  /// @return True if the address is a validator oracle, false otherwise.
  function isValidatorOracle(address _account) public view returns (bool) {
    return hasRole(VALIDATOR_ORACLE_ROLE, _account) && validatorsOracleIndices[_account] > 0;
  }

  /// @notice Forces the selection of the next validator oracle.
  function forceNextValidatorOracle() external {
    if (
      !hasRole(VALIDATOR_ORACLE_SENTINEL_ROLE, msg.sender) &&
      !hasRole(VALIDATOR_ORACLE_MANAGER_ROLE, msg.sender)
    ) revert NotAuthorized();
    _nextValidatorOracle();
  }

  /// @notice Internal function to update the current validator oracle.
  function _nextValidatorOracle() private {
    currentOracleIndex = (currentOracleIndex + 1) % validatorsOracle.length;
    emit NextValidatorOracle(currentOracleIndex, validatorsOracle[currentOracleIndex]);
  }

  /****************
   ** VALIDATORS **
   ****************/

  /// @notice Sets the beacon balance to the specified amount.
  /// @param _amount The amount to set as the beacon balance.
  /// @dev Only the router address can call this function.
  function setBeaconBalance(uint256 _amount) external payable nonReentrant {
    if (msg.sender != address(router)) revert OnlyRouter();
    _setBeaconBalance(_amount);
  }

  /// @notice Internal function to set the beacon balance.
  /// @param _amount The amount to set as the beacon balance.
  function _setBeaconBalance(uint256 _amount) private {
    beaconBalance = _amount;
    emit SetBeaconBalance(_amount);
  }

  /// @notice Sets the pending withdraw balance to the specified amount.
  /// @param _amount The amount to set as the pending withdraw balance.
  /// @dev Only the router address can call this function.
  function setWithdrawBalance(uint256 _amount) external payable nonReentrant {
    if (msg.sender != address(router)) revert OnlyRouter();
    _setWithdrawBalance(_amount);
  }

  /// @notice Internal function to set the pending withdraw balance.
  /// @param _amount The amount to set as the pending withdraw balance.
  function _setWithdrawBalance(uint256 _amount) private {
    withdrawBalance = _amount;
    emit SetWithdrawBalance(_amount);
  }

  /// @notice Initiates a transfer to anticipate a validator's withdrawal.
  /// @dev Only a valid validator oracle can initiate this anticipation request.
  /// This function also checks the balance constraints before processing.
  function anticipateWithdrawBeacon() external nonReentrant whenNotPaused {
    if (!isValidatorOracle(msg.sender)) revert OnlyValidatorOracle();
    if (msg.sender != validatorsOracle[currentOracleIndex]) revert NotIsCurrentValidatorOracle();
    if (withdrawBalance == 0) revert WithdrawZeroBalance();

    uint256 routerBalance = address(router).balance;
    if (routerBalance > withdrawBalance) revert RouterAlreadyHaveBalance();

    uint256 diffAmount = withdrawBalance - routerBalance;
    if (address(this).balance < diffAmount) revert NotEnoughPoolBalance();

    _setBeaconBalance(beaconBalance + diffAmount);
    emit AnticipateWithdrawBeacon(msg.sender, diffAmount);

    router.receiveWithdrawEther{ value: diffAmount }();
  }

  /// @notice Creates a new validator with the given parameters.
  /// @param _publicKey The public key of the validator.
  /// @param _signature The signature of the validator.
  /// @param _depositDataRoot The deposit data root for the validator.
  /// @dev Only a valid validator oracle can call this function.
  function addValidator(
    bytes calldata _publicKey,
    bytes calldata _signature,
    bytes32 _depositDataRoot
  ) external nonReentrant whenNotPaused {
    if (!isValidatorOracle(msg.sender)) revert OnlyValidatorOracle();
    if (msg.sender != validatorsOracle[currentOracleIndex]) revert NotIsCurrentValidatorOracle();
    if (address(this).balance < config.poolSize) revert NotEnoughBalanceOnPool();
    if (validators[_publicKey]) revert ValidatorExists();
    if (address(router).balance < withdrawBalance) revert ShouldAnticipateWithdraw();

    validators[_publicKey] = true;
    _nextValidatorOracle();
    _setBeaconBalance(beaconBalance + config.validatorSize);
    emit AddValidator(
      msg.sender,
      config.validatorSize,
      _publicKey,
      withdrawalCredentials,
      _signature,
      _depositDataRoot
    );
    deposit.deposit{ value: config.validatorSize }(
      _publicKey,
      withdrawalCredentials,
      _signature,
      _depositDataRoot
    );
    _processFeeValidator();
  }

  /*************
   ** Airdrop **
   *************/

  /// @notice Function to claim rewards by transferring shares, accessible only by the airdrop fee address.
  /// @param _account Address to transfer the claimed rewards to.
  /// @param _sharesAmount Amount of shares to claim as rewards.
  function claimAirdrop(address _account, uint256 _sharesAmount) external whenNotPaused {
    if (msg.sender != address(airdrop)) revert OnlyAirdrop();
    _transferShares(address(airdrop), _account, _sharesAmount);
  }

  /*****************
   **    FEES     **
   *****************/

  /// @notice Returns an array of fee roles.
  /// @return roles An array of FeeRole.
  function getFeesRoles() public pure returns (FeeRole[4] memory) {
    return [FeeRole.Airdrop, FeeRole.Operator, FeeRole.StakeTogether, FeeRole.Sender];
  }

  /// @notice Sets the fee address for a given role.
  /// @param _role The role for which the address will be set.
  /// @param _address The address to set.
  /// @dev Only an admin can call this function.
  function setFeeAddress(FeeRole _role, address payable _address) external onlyRole(ADMIN_ROLE) {
    if (_address == address(0)) revert ZeroAddress();
    feesRole[_role] = _address;
    if (_role == FeeRole.Airdrop) {
      feesRole[_role] = payable(airdrop);
    } else {
      feesRole[_role] = _address;
    }
    emit SetFeeAddress(_role, _address);
  }

  /// @notice Gets the fee address for a given role.
  /// @param _role The role for which the address will be retrieved.
  /// @return The address associated with the given role.
  function getFeeAddress(FeeRole _role) public view returns (address) {
    return feesRole[_role];
  }

  /// @notice Sets the fee for a given fee type.
  /// @param _feeType The type of fee to set.
  /// @param _value The value of the fee.
  /// @param _allocations The allocations for the fee.
  /// @dev Only an admin can call this function.
  function setFee(
    FeeType _feeType,
    uint256 _value,
    uint256[] calldata _allocations
  ) external onlyRole(ADMIN_ROLE) {
    if (_allocations.length != 4) revert InvalidLength();
    uint256 sum = 0;
    for (uint256 i = 0; i < _allocations.length; i++) {
      fees[_feeType].allocations[FeeRole(i)] = _allocations[i];
      sum += _allocations[i];
    }

    if (sum != 1 ether) revert InvalidSum();

    fees[_feeType].value = _value;

    emit SetFee(_feeType, _value, _allocations);
  }

  /// @notice Get the fee for a given fee type.
  /// @param _feeType The type of fee to get.
  function getFee(FeeType _feeType) external view returns (uint256) {
    return fees[_feeType].value;
  }

  /// @notice Distributes fees according to their type, amount, and the destination.
  /// @param _feeType The type of fee being distributed.
  /// @param _sharesAmount The total shares amount for the fee.
  /// @param _to The address to distribute the fees.
  /// @dev This function computes how the fees are allocated to different roles.
  function _distributeFees(FeeType _feeType, uint256 _sharesAmount, address _to) private {
    uint256[4] memory allocatedShares;
    FeeRole[4] memory roles = getFeesRoles();

    uint256 feeValue = fees[_feeType].value;
    uint256 feeShares = Math.mulDiv(_sharesAmount, feeValue, 1 ether);
    uint256 totalAllocatedShares = 0;

    for (uint256 i = 0; i < roles.length - 1; i++) {
      if (getFeeAddress(roles[i]) == address(0)) revert ZeroAddress();
      uint256 allocation = fees[_feeType].allocations[roles[i]];
      allocatedShares[i] = Math.mulDiv(feeShares, allocation, 1 ether);
      totalAllocatedShares += allocatedShares[i];
    }

    allocatedShares[3] = _sharesAmount - totalAllocatedShares;

    uint256 length = (_feeType == FeeType.Entry) ? roles.length : roles.length - 1;

    for (uint256 i = 0; i < length; i++) {
      if (allocatedShares[i] > 0) {
        if (_feeType == FeeType.Entry && roles[i] == FeeRole.Sender) {
          _mintShares(_to, allocatedShares[i]);
        } else {
          _mintShares(getFeeAddress(roles[i]), allocatedShares[i]);
          emit MintFeeShares(getFeeAddress(roles[i]), allocatedShares[i], _feeType, roles[i]);
        }
      }
    }
  }

  /// @notice Processes a stake entry and distributes the associated fees.
  /// @param _to The address to receive the stake entry.
  /// @param _amount The amount staked.
  /// @dev Calls the distributeFees function internally.
  function _processFeeEntry(address _to, uint256 _amount) private {
    uint256 sharesAmount = Math.mulDiv(_amount, totalShares, totalSupply() - _amount);
    _distributeFees(FeeType.Entry, sharesAmount, _to);
  }

  /// @notice Process staking rewards and distributes the rewards based on shares.
  /// @param _sharesAmount The amount of shares related to the staking rewards.
  /// @dev The caller should be the router contract. This function will also emit the ProcessStakeRewards event.
  function processFeeRewards(uint256 _sharesAmount) external payable nonReentrant whenNotPaused {
    if (msg.sender != address(router)) revert OnlyRouter();
    _distributeFees(FeeType.Rewards, _sharesAmount, address(0));
    emit ProcessStakeRewards(msg.value, _sharesAmount);
  }

  /// @notice Processes the staking pool fee and distributes it accordingly.
  /// @dev Calculates the shares amount and then distributes the staking pool fee.
  function _processFeePool() private {
    uint256 amount = fees[FeeType.Pool].value;
    uint256 sharesAmount = Math.mulDiv(amount, totalShares, totalSupply() - amount);
    _distributeFees(FeeType.Pool, sharesAmount, address(0));
  }

  /// @notice Transfers the staking validator fee to the operator role.
  /// @dev Transfers the associated amount to the Operator's address.
  function _processFeeValidator() private {
    emit ProcessStakeValidator(getFeeAddress(FeeRole.Operator), fees[FeeType.Validator].value);
    Address.sendValue(payable(getFeeAddress(FeeRole.Operator)), fees[FeeType.Validator].value);
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/AccessControl.sol)

pragma solidity ^0.8.20;

import {IAccessControl} from "@openzeppelin/contracts/access/IAccessControl.sol";
import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {ERC165Upgradeable} from "../utils/introspection/ERC165Upgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControl, ERC165Upgradeable {
    struct RoleData {
        mapping(address account => bool) hasRole;
        bytes32 adminRole;
    }

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;


    /// @custom:storage-location erc7201:openzeppelin.storage.AccessControl
    struct AccessControlStorage {
        mapping(bytes32 role => RoleData) _roles;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.AccessControl")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant AccessControlStorageLocation = 0x02dd7bc7dec4dceedda775e58dd541e08a116c6c53815c0bd028192f7b626800;

    function _getAccessControlStorage() private pure returns (AccessControlStorage storage $) {
        assembly {
            $.slot := AccessControlStorageLocation
        }
    }

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with an {AccessControlUnauthorizedAccount} error including the required role.
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    function __AccessControl_init() internal onlyInitializing {
    }

    function __AccessControl_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual returns (bool) {
        AccessControlStorage storage $ = _getAccessControlStorage();
        return $._roles[role].hasRole[account];
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
     * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
     * is missing `role`.
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert AccessControlUnauthorizedAccount(account, role);
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual returns (bytes32) {
        AccessControlStorage storage $ = _getAccessControlStorage();
        return $._roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address callerConfirmation) public virtual {
        if (callerConfirmation != _msgSender()) {
            revert AccessControlBadConfirmation();
        }

        _revokeRole(role, callerConfirmation);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        AccessControlStorage storage $ = _getAccessControlStorage();
        bytes32 previousAdminRole = getRoleAdmin(role);
        $._roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
        AccessControlStorage storage $ = _getAccessControlStorage();
        if (!hasRole(role, account)) {
            $._roles[role].hasRole[account] = true;
            emit RoleGranted(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Attempts to revoke `role` to `account` and returns a boolean indicating if `role` was revoked.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
        AccessControlStorage storage $ = _getAccessControlStorage();
        if (hasRole(role, account)) {
            $._roles[role].hasRole[account] = false;
            emit RoleRevoked(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.20;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Storage of the initializable contract.
     *
     * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
     * when using with upgradeable contracts.
     *
     * @custom:storage-location erc7201:openzeppelin.storage.Initializable
     */
    struct InitializableStorage {
        /**
         * @dev Indicates that the contract has been initialized.
         */
        uint64 _initialized;
        /**
         * @dev Indicates that the contract is in the process of being initialized.
         */
        bool _initializing;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;

    /**
     * @dev The contract is already initialized.
     */
    error InvalidInitialization();

    /**
     * @dev The contract is not initializing.
     */
    error NotInitializing();

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint64 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
     * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
     * production.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        // Cache values to avoid duplicated sloads
        bool isTopLevelCall = !$._initializing;
        uint64 initialized = $._initialized;

        // Allowed calls:
        // - initialSetup: the contract is not in the initializing state and no previous version was
        //                 initialized
        // - construction: the contract is initialized at version 1 (no reininitialization) and the
        //                 current contract is just being deployed
        bool initialSetup = initialized == 0 && isTopLevelCall;
        bool construction = initialized == 1 && address(this).code.length == 0;

        if (!initialSetup && !construction) {
            revert InvalidInitialization();
        }
        $._initialized = 1;
        if (isTopLevelCall) {
            $._initializing = true;
        }
        _;
        if (isTopLevelCall) {
            $._initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint64 version) {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing || $._initialized >= version) {
            revert InvalidInitialization();
        }
        $._initialized = version;
        $._initializing = true;
        _;
        $._initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        _checkInitializing();
        _;
    }

    /**
     * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
     */
    function _checkInitializing() internal view virtual {
        if (!_isInitializing()) {
            revert NotInitializing();
        }
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing) {
            revert InvalidInitialization();
        }
        if ($._initialized != type(uint64).max) {
            $._initialized = type(uint64).max;
            emit Initialized(type(uint64).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint64) {
        return _getInitializableStorage()._initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _getInitializableStorage()._initializing;
    }

    /**
     * @dev Returns a pointer to the storage namespace.
     */
    // solhint-disable-next-line var-name-mixedcase
    function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
        assembly {
            $.slot := INITIALIZABLE_STORAGE
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/UUPSUpgradeable.sol)

pragma solidity ^0.8.20;

import {IERC1822Proxiable} from "@openzeppelin/contracts/interfaces/draft-IERC1822.sol";
import {ERC1967Utils} from "@openzeppelin/contracts/proxy/ERC1967/ERC1967Utils.sol";
import {Initializable} from "./Initializable.sol";

/**
 * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
 * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
 *
 * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
 * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
 * `UUPSUpgradeable` with a custom implementation of upgrades.
 *
 * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
 */
abstract contract UUPSUpgradeable is Initializable, IERC1822Proxiable {
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable
    address private immutable __self = address(this);

    /**
     * @dev The version of the upgrade interface of the contract. If this getter is missing, both `upgradeTo(address)`
     * and `upgradeToAndCall(address,bytes)` are present, and `upgradeTo` must be used if no function should be called,
     * while `upgradeToAndCall` will invoke the `receive` function if the second argument is the empty byte string.
     * If the getter returns `"5.0.0"`, only `upgradeToAndCall(address,bytes)` is present, and the second argument must
     * be the empty byte string if no function should be called, making it impossible to invoke the `receive` function
     * during an upgrade.
     */
    string public constant UPGRADE_INTERFACE_VERSION = "5.0.0";

    /**
     * @dev The call is from an unauthorized context.
     */
    error UUPSUnauthorizedCallContext();

    /**
     * @dev The storage `slot` is unsupported as a UUID.
     */
    error UUPSUnsupportedProxiableUUID(bytes32 slot);

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
     * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
     * fail.
     */
    modifier onlyProxy() {
        _checkProxy();
        _;
    }

    /**
     * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
     * callable on the implementing contract but not through proxies.
     */
    modifier notDelegated() {
        _checkNotDelegated();
        _;
    }

    function __UUPSUpgradeable_init() internal onlyInitializing {
    }

    function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
     * implementation. It is used to validate the implementation's compatibility when performing an upgrade.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
     */
    function proxiableUUID() external view virtual notDelegated returns (bytes32) {
        return ERC1967Utils.IMPLEMENTATION_SLOT;
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
     * encoded in `data`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, data);
    }

    /**
     * @dev Reverts if the execution is not performed via delegatecall or the execution
     * context is not of a proxy with an ERC1967-compliant implementation pointing to self.
     * See {_onlyProxy}.
     */
    function _checkProxy() internal view virtual {
        if (
            address(this) == __self || // Must be called through delegatecall
            ERC1967Utils.getImplementation() != __self // Must be called through an active proxy
        ) {
            revert UUPSUnauthorizedCallContext();
        }
    }

    /**
     * @dev Reverts if the execution is performed via delegatecall.
     * See {notDelegated}.
     */
    function _checkNotDelegated() internal view virtual {
        if (address(this) != __self) {
            // Must not be called through delegatecall
            revert UUPSUnauthorizedCallContext();
        }
    }

    /**
     * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
     * {upgradeToAndCall}.
     *
     * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
     *
     * ```solidity
     * function _authorizeUpgrade(address) internal onlyOwner {}
     * ```
     */
    function _authorizeUpgrade(address newImplementation) internal virtual;

    /**
     * @dev Performs an implementation upgrade with a security check for UUPS proxies, and additional setup call.
     *
     * As a security check, {proxiableUUID} is invoked in the new implementation, and the return value
     * is expected to be the implementation slot in ERC1967.
     *
     * Emits an {IERC1967-Upgraded} event.
     */
    function _upgradeToAndCallUUPS(address newImplementation, bytes memory data) private {
        try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
            if (slot != ERC1967Utils.IMPLEMENTATION_SLOT) {
                revert UUPSUnsupportedProxiableUUID(slot);
            }
            ERC1967Utils.upgradeToAndCall(newImplementation, data);
        } catch {
            // The implementation is not UUPS
            revert ERC1967Utils.ERC1967InvalidImplementation(newImplementation);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {ContextUpgradeable} from "../../utils/ContextUpgradeable.sol";
import {IERC20Errors} from "@openzeppelin/contracts/interfaces/draft-IERC6093.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 */
abstract contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20, IERC20Metadata, IERC20Errors {
    /// @custom:storage-location erc7201:openzeppelin.storage.ERC20
    struct ERC20Storage {
        mapping(address account => uint256) _balances;

        mapping(address account => mapping(address spender => uint256)) _allowances;

        uint256 _totalSupply;

        string _name;
        string _symbol;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ERC20")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant ERC20StorageLocation = 0x52c63247e1f47db19d5ce0460030c497f067ca4cebf71ba98eeadabe20bace00;

    function _getERC20Storage() private pure returns (ERC20Storage storage $) {
        assembly {
            $.slot := ERC20StorageLocation
        }
    }

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC20_init_unchained(name_, symbol_);
    }

    function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        ERC20Storage storage $ = _getERC20Storage();
        $._name = name_;
        $._symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual returns (uint256) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual returns (uint256) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual returns (uint256) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        ERC20Storage storage $ = _getERC20Storage();
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            $._totalSupply += value;
        } else {
            uint256 fromBalance = $._balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                $._balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                $._totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                $._balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     * ```
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        ERC20Storage storage $ = _getERC20Storage();
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        $._allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC20Burnable.sol)

pragma solidity ^0.8.20;

import {ERC20Upgradeable} from "../ERC20Upgradeable.sol";
import {ContextUpgradeable} from "../../../utils/ContextUpgradeable.sol";
import {Initializable} from "../../../proxy/utils/Initializable.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20BurnableUpgradeable is Initializable, ContextUpgradeable, ERC20Upgradeable {
    function __ERC20Burnable_init() internal onlyInitializing {
    }

    function __ERC20Burnable_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Destroys a `value` amount of tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 value) public virtual {
        _burn(_msgSender(), value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, deducting from
     * the caller's allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `value`.
     */
    function burnFrom(address account, uint256 value) public virtual {
        _spendAllowance(account, _msgSender(), value);
        _burn(account, value);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC20Permit.sol)

pragma solidity ^0.8.20;

import {IERC20Permit} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol";
import {ERC20Upgradeable} from "../ERC20Upgradeable.sol";
import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import {EIP712Upgradeable} from "../../../utils/cryptography/EIP712Upgradeable.sol";
import {NoncesUpgradeable} from "../../../utils/NoncesUpgradeable.sol";
import {Initializable} from "../../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
abstract contract ERC20PermitUpgradeable is Initializable, ERC20Upgradeable, IERC20Permit, EIP712Upgradeable, NoncesUpgradeable {
    bytes32 private constant PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");

    /**
     * @dev Permit deadline has expired.
     */
    error ERC2612ExpiredSignature(uint256 deadline);

    /**
     * @dev Mismatched signature.
     */
    error ERC2612InvalidSigner(address signer, address owner);

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    function __ERC20Permit_init(string memory name) internal onlyInitializing {
        __EIP712_init_unchained(name, "1");
    }

    function __ERC20Permit_init_unchained(string memory) internal onlyInitializing {}

    /**
     * @inheritdoc IERC20Permit
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        if (block.timestamp > deadline) {
            revert ERC2612ExpiredSignature(deadline);
        }

        bytes32 structHash = keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));

        bytes32 hash = _hashTypedDataV4(structHash);

        address signer = ECDSA.recover(hash, v, r, s);
        if (signer != owner) {
            revert ERC2612InvalidSigner(signer, owner);
        }

        _approve(owner, spender, value);
    }

    /**
     * @inheritdoc IERC20Permit
     */
    function nonces(address owner) public view virtual override(IERC20Permit, NoncesUpgradeable) returns (uint256) {
        return super.nonces(owner);
    }

    /**
     * @inheritdoc IERC20Permit
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view virtual returns (bytes32) {
        return _domainSeparatorV4();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol)

pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.20;

import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
import {IERC5267} from "@openzeppelin/contracts/interfaces/IERC5267.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding scheme specified in the EIP requires a domain separator and a hash of the typed structured data, whose
 * encoding is very generic and therefore its implementation in Solidity is not feasible, thus this contract
 * does not implement the encoding itself. Protocols need to implement the type-specific encoding they need in order to
 * produce the hash of their typed data using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain
 * separator of the implementation contract. This will cause the {_domainSeparatorV4} function to always rebuild the
 * separator from the immutable values, which is cheaper than accessing a cached version in cold storage.
 */
abstract contract EIP712Upgradeable is Initializable, IERC5267 {
    bytes32 private constant TYPE_HASH =
        keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    /// @custom:storage-location erc7201:openzeppelin.storage.EIP712
    struct EIP712Storage {
        /// @custom:oz-renamed-from _HASHED_NAME
        bytes32 _hashedName;
        /// @custom:oz-renamed-from _HASHED_VERSION
        bytes32 _hashedVersion;

        string _name;
        string _version;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.EIP712")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant EIP712StorageLocation = 0xa16a46d94261c7517cc8ff89f61c0ce93598e3c849801011dee649a6a557d100;

    function _getEIP712Storage() private pure returns (EIP712Storage storage $) {
        assembly {
            $.slot := EIP712StorageLocation
        }
    }

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    function __EIP712_init(string memory name, string memory version) internal onlyInitializing {
        __EIP712_init_unchained(name, version);
    }

    function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {
        EIP712Storage storage $ = _getEIP712Storage();
        $._name = name;
        $._version = version;

        // Reset prior values in storage if upgrading
        $._hashedName = 0;
        $._hashedVersion = 0;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        return _buildDomainSeparator();
    }

    function _buildDomainSeparator() private view returns (bytes32) {
        return keccak256(abi.encode(TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash(), block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return MessageHashUtils.toTypedDataHash(_domainSeparatorV4(), structHash);
    }

    /**
     * @dev See {IERC-5267}.
     */
    function eip712Domain()
        public
        view
        virtual
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        )
    {
        EIP712Storage storage $ = _getEIP712Storage();
        // If the hashed name and version in storage are non-zero, the contract hasn't been properly initialized
        // and the EIP712 domain is not reliable, as it will be missing name and version.
        require($._hashedName == 0 && $._hashedVersion == 0, "EIP712: Uninitialized");

        return (
            hex"0f", // 01111
            _EIP712Name(),
            _EIP712Version(),
            block.chainid,
            address(this),
            bytes32(0),
            new uint256[](0)
        );
    }

    /**
     * @dev The name parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712Name() internal view virtual returns (string memory) {
        EIP712Storage storage $ = _getEIP712Storage();
        return $._name;
    }

    /**
     * @dev The version parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712Version() internal view virtual returns (string memory) {
        EIP712Storage storage $ = _getEIP712Storage();
        return $._version;
    }

    /**
     * @dev The hash of the name parameter for the EIP712 domain.
     *
     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Name` instead.
     */
    function _EIP712NameHash() internal view returns (bytes32) {
        EIP712Storage storage $ = _getEIP712Storage();
        string memory name = _EIP712Name();
        if (bytes(name).length > 0) {
            return keccak256(bytes(name));
        } else {
            // If the name is empty, the contract may have been upgraded without initializing the new storage.
            // We return the name hash in storage if non-zero, otherwise we assume the name is empty by design.
            bytes32 hashedName = $._hashedName;
            if (hashedName != 0) {
                return hashedName;
            } else {
                return keccak256("");
            }
        }
    }

    /**
     * @dev The hash of the version parameter for the EIP712 domain.
     *
     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Version` instead.
     */
    function _EIP712VersionHash() internal view returns (bytes32) {
        EIP712Storage storage $ = _getEIP712Storage();
        string memory version = _EIP712Version();
        if (bytes(version).length > 0) {
            return keccak256(bytes(version));
        } else {
            // If the version is empty, the contract may have been upgraded without initializing the new storage.
            // We return the version hash in storage if non-zero, otherwise we assume the version is empty by design.
            bytes32 hashedVersion = $._hashedVersion;
            if (hashedVersion != 0) {
                return hashedVersion;
            } else {
                return keccak256("");
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 */
abstract contract ERC165Upgradeable is Initializable, IERC165 {
    function __ERC165_init() internal onlyInitializing {
    }

    function __ERC165_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Nonces.sol)
pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Provides tracking nonces for addresses. Nonces will only increment.
 */
abstract contract NoncesUpgradeable is Initializable {
    /**
     * @dev The nonce used for an `account` is not the expected current nonce.
     */
    error InvalidAccountNonce(address account, uint256 currentNonce);

    /// @custom:storage-location erc7201:openzeppelin.storage.Nonces
    struct NoncesStorage {
        mapping(address account => uint256) _nonces;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Nonces")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant NoncesStorageLocation = 0x5ab42ced628888259c08ac98db1eb0cf702fc1501344311d8b100cd1bfe4bb00;

    function _getNoncesStorage() private pure returns (NoncesStorage storage $) {
        assembly {
            $.slot := NoncesStorageLocation
        }
    }

    function __Nonces_init() internal onlyInitializing {
    }

    function __Nonces_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Returns the next unused nonce for an address.
     */
    function nonces(address owner) public view virtual returns (uint256) {
        NoncesStorage storage $ = _getNoncesStorage();
        return $._nonces[owner];
    }

    /**
     * @dev Consumes a nonce.
     *
     * Returns the current value and increments nonce.
     */
    function _useNonce(address owner) internal virtual returns (uint256) {
        NoncesStorage storage $ = _getNoncesStorage();
        // For each account, the nonce has an initial value of 0, can only be incremented by one, and cannot be
        // decremented or reset. This guarantees that the nonce never overflows.
        unchecked {
            // It is important to do x++ and not ++x here.
            return $._nonces[owner]++;
        }
    }

    /**
     * @dev Same as {_useNonce} but checking that `nonce` is the next valid for `owner`.
     */
    function _useCheckedNonce(address owner, uint256 nonce) internal virtual {
        uint256 current = _useNonce(owner);
        if (nonce != current) {
            revert InvalidAccountNonce(owner, current);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Pausable.sol)

pragma solidity ^0.8.20;

import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract PausableUpgradeable is Initializable, ContextUpgradeable {
    /// @custom:storage-location erc7201:openzeppelin.storage.Pausable
    struct PausableStorage {
        bool _paused;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Pausable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant PausableStorageLocation = 0xcd5ed15c6e187e77e9aee88184c21f4f2182ab5827cb3b7e07fbedcd63f03300;

    function _getPausableStorage() private pure returns (PausableStorage storage $) {
        assembly {
            $.slot := PausableStorageLocation
        }
    }

    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    /**
     * @dev The operation failed because the contract is paused.
     */
    error EnforcedPause();

    /**
     * @dev The operation failed because the contract is not paused.
     */
    error ExpectedPause();

    /**
     * @dev Initializes the contract in unpaused state.
     */
    function __Pausable_init() internal onlyInitializing {
        __Pausable_init_unchained();
    }

    function __Pausable_init_unchained() internal onlyInitializing {
        PausableStorage storage $ = _getPausableStorage();
        $._paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        PausableStorage storage $ = _getPausableStorage();
        return $._paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        if (paused()) {
            revert EnforcedPause();
        }
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        if (!paused()) {
            revert ExpectedPause();
        }
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        PausableStorage storage $ = _getPausableStorage();
        $._paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        PausableStorage storage $ = _getPausableStorage();
        $._paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuardUpgradeable is Initializable {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    /// @custom:storage-location erc7201:openzeppelin.storage.ReentrancyGuard
    struct ReentrancyGuardStorage {
        uint256 _status;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ReentrancyGuard")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant ReentrancyGuardStorageLocation = 0x9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f00;

    function _getReentrancyGuardStorage() private pure returns (ReentrancyGuardStorage storage $) {
        assembly {
            $.slot := ReentrancyGuardStorageLocation
        }
    }

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    function __ReentrancyGuard_init() internal onlyInitializing {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal onlyInitializing {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        $._status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if ($._status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        $._status = ENTERED;
    }

    function _nonReentrantAfter() private {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        $._status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        return $._status == ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/IAccessControl.sol)

pragma solidity ^0.8.20;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev The `account` is missing a role.
     */
    error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);

    /**
     * @dev The caller of a function is not the expected one.
     *
     * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}.
     */
    error AccessControlBadConfirmation();

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     */
    function renounceRole(bytes32 role, address callerConfirmation) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.20;

/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822Proxiable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC5267.sol)

pragma solidity ^0.8.20;

interface IERC5267 {
    /**
     * @dev MAY be emitted to signal that the domain could have changed.
     */
    event EIP712DomainChanged();

    /**
     * @dev returns the fields and values that describe the domain separator used by this contract for EIP-712
     * signature.
     */
    function eip712Domain()
        external
        view
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        );
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.20;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {UpgradeableBeacon} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/ERC1967/ERC1967Utils.sol)

pragma solidity ^0.8.20;

import {IBeacon} from "../beacon/IBeacon.sol";
import {Address} from "../../utils/Address.sol";
import {StorageSlot} from "../../utils/StorageSlot.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 */
library ERC1967Utils {
    // We re-declare ERC-1967 events here because they can't be used directly from IERC1967.
    // This will be fixed in Solidity 0.8.21. At that point we should remove these events.
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Emitted when the beacon is changed.
     */
    event BeaconUpgraded(address indexed beacon);

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1.
     */
    // solhint-disable-next-line private-vars-leading-underscore
    bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev The `implementation` of the proxy is invalid.
     */
    error ERC1967InvalidImplementation(address implementation);

    /**
     * @dev The `admin` of the proxy is invalid.
     */
    error ERC1967InvalidAdmin(address admin);

    /**
     * @dev The `beacon` of the proxy is invalid.
     */
    error ERC1967InvalidBeacon(address beacon);

    /**
     * @dev An upgrade function sees `msg.value > 0` that may be lost.
     */
    error ERC1967NonPayable();

    /**
     * @dev Returns the current implementation address.
     */
    function getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        if (newImplementation.code.length == 0) {
            revert ERC1967InvalidImplementation(newImplementation);
        }
        StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Performs implementation upgrade with additional setup call if data is nonempty.
     * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected
     * to avoid stuck value in the contract.
     *
     * Emits an {IERC1967-Upgraded} event.
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);

        if (data.length > 0) {
            Address.functionDelegateCall(newImplementation, data);
        } else {
            _checkNonPayable();
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1.
     */
    // solhint-disable-next-line private-vars-leading-underscore
    bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Returns the current admin.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using
     * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        if (newAdmin == address(0)) {
            revert ERC1967InvalidAdmin(address(0));
        }
        StorageSlot.getAddressSlot(ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {IERC1967-AdminChanged} event.
     */
    function changeAdmin(address newAdmin) internal {
        emit AdminChanged(getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is the keccak-256 hash of "eip1967.proxy.beacon" subtracted by 1.
     */
    // solhint-disable-next-line private-vars-leading-underscore
    bytes32 internal constant BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Returns the current beacon.
     */
    function getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        if (newBeacon.code.length == 0) {
            revert ERC1967InvalidBeacon(newBeacon);
        }

        StorageSlot.getAddressSlot(BEACON_SLOT).value = newBeacon;

        address beaconImplementation = IBeacon(newBeacon).implementation();
        if (beaconImplementation.code.length == 0) {
            revert ERC1967InvalidImplementation(beaconImplementation);
        }
    }

    /**
     * @dev Change the beacon and trigger a setup call if data is nonempty.
     * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected
     * to avoid stuck value in the contract.
     *
     * Emits an {IERC1967-BeaconUpgraded} event.
     *
     * CAUTION: Invoking this function has no effect on an instance of {BeaconProxy} since v5, since
     * it uses an immutable beacon without looking at the value of the ERC-1967 beacon slot for
     * efficiency.
     */
    function upgradeBeaconToAndCall(address newBeacon, bytes memory data) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);

        if (data.length > 0) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        } else {
            _checkNonPayable();
        }
    }

    /**
     * @dev Reverts if `msg.value` is not zero. It can be used to avoid `msg.value` stuck in the contract
     * if an upgrade doesn't perform an initialization call.
     */
    function _checkNonPayable() private {
        if (msg.value > 0) {
            revert ERC1967NonPayable();
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.20;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS
    }

    /**
     * @dev The signature derives the `address(0)`.
     */
    error ECDSAInvalidSignature();

    /**
     * @dev The signature has an invalid length.
     */
    error ECDSAInvalidSignatureLength(uint256 length);

    /**
     * @dev The signature has an S value that is in the upper half order.
     */
    error ECDSAInvalidSignatureS(bytes32 s);

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with `signature` or an error. This will not
     * return address(0) without also returning an error description. Errors are documented using an enum (error type)
     * and a bytes32 providing additional information about the error.
     *
     * If no error is returned, then the address can be used for verification purposes.
     *
     * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError, bytes32) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength, bytes32(signature.length));
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, signature);
        _throwError(error, errorArg);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     */
    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError, bytes32) {
        unchecked {
            bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
            // We do not check for an overflow here since the shift operation results in 0 or 1.
            uint8 v = uint8((uint256(vs) >> 255) + 27);
            return tryRecover(hash, v, r, s);
        }
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     */
    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
        (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, r, vs);
        _throwError(error, errorArg);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError, bytes32) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS, s);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature, bytes32(0));
        }

        return (signer, RecoverError.NoError, bytes32(0));
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, v, r, s);
        _throwError(error, errorArg);
        return recovered;
    }

    /**
     * @dev Optionally reverts with the corresponding custom error according to the `error` argument provided.
     */
    function _throwError(RecoverError error, bytes32 errorArg) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert ECDSAInvalidSignature();
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert ECDSAInvalidSignatureLength(uint256(errorArg));
        } else if (error == RecoverError.InvalidSignatureS) {
            revert ECDSAInvalidSignatureS(errorArg);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/MessageHashUtils.sol)

pragma solidity ^0.8.20;

import {Strings} from "../Strings.sol";

/**
 * @dev Signature message hash utilities for producing digests to be consumed by {ECDSA} recovery or signing.
 *
 * The library provides methods for generating a hash of a message that conforms to the
 * https://eips.ethereum.org/EIPS/eip-191[EIP 191] and https://eips.ethereum.org/EIPS/eip-712[EIP 712]
 * specifications.
 */
library MessageHashUtils {
    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing a bytes32 `messageHash` with
     * `"\x19Ethereum Signed Message:\n32"` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * NOTE: The `messageHash` parameter is intended to be the result of hashing a raw message with
     * keccak256, although any bytes32 value can be safely used because the final digest will
     * be re-hashed.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes32 messageHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32") // 32 is the bytes-length of messageHash
            mstore(0x1c, messageHash) // 0x1c (28) is the length of the prefix
            digest := keccak256(0x00, 0x3c) // 0x3c is the length of the prefix (0x1c) + messageHash (0x20)
        }
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing an arbitrary `message` with
     * `"\x19Ethereum Signed Message:\n" + len(message)` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes memory message) internal pure returns (bytes32) {
        return
            keccak256(bytes.concat("\x19Ethereum Signed Message:\n", bytes(Strings.toString(message.length)), message));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x00` (data with intended validator).
     *
     * The digest is calculated by prefixing an arbitrary `data` with `"\x19\x00"` and the intended
     * `validator` address. Then hashing the result.
     *
     * See {ECDSA-recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(hex"19_00", validator, data));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-712 typed data (EIP-191 version `0x01`).
     *
     * The digest is calculated from a `domainSeparator` and a `structHash`, by prefixing them with
     * `\x19\x01` and hashing the result. It corresponds to the hash signed by the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] JSON-RPC method as part of EIP-712.
     *
     * See {ECDSA-recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, hex"19_01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            digest := keccak256(ptr, 0x42)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Muldiv operation overflow.
     */
    error MathOverflowedMulDiv();

    enum Rounding {
        Floor, // Toward negative infinity
        Ceil, // Toward positive infinity
        Trunc, // Toward zero
        Expand // Away from zero
    }

    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds towards infinity instead
     * of rounding towards zero.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        if (b == 0) {
            // Guarantee the same behavior as in a regular Solidity division.
            return a / b;
        }

        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
     * denominator == 0.
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
     * Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0 = x * y; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            if (denominator <= prod1) {
                revert MathOverflowedMulDiv();
            }

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.

            uint256 twos = denominator & (0 - denominator);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
            // works in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
     * towards zero.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
        }
    }

    /**
     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
     */
    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
        return uint8(rounding) % 2 == 1;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.20;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(newImplementation.code.length > 0);
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol)

pragma solidity ^0.8.20;

import {Math} from "./math/Math.sol";
import {SignedMath} from "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant HEX_DIGITS = "0123456789abcdef";
    uint8 private constant ADDRESS_LENGTH = 20;

    /**
     * @dev The `value` string doesn't fit in the specified `length`.
     */
    error StringsInsufficientHexLength(uint256 value, uint256 length);

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toStringSigned(int256 value) internal pure returns (string memory) {
        return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        uint256 localValue = value;
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = HEX_DIGITS[localValue & 0xf];
            localValue >>= 4;
        }
        if (localValue != 0) {
            revert StringsInsufficientHexLength(value, length);
        }
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
     * representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-FileCopyrightText: 2023 Stake Together Labs <[email protected]>
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.22;

/// @title Interface for the Airdrop functionality within the Stake Together protocol.
/// @notice A contract that represents the Airdrop functionality.
/// @custom:security-contact [email protected]
interface IAirdrop {
  /// @notice Thrown if a claim has already been made for a given block and index.
  error AlreadyClaimed();

  /// @notice Thrown if the Merkle Proof verification fails.
  error InvalidProof();

  /// @notice Thrown if the listed in anti-fraud.
  error ListedInAntiFraud();

  /// @notice Thrown if the Merkle Root is not set for a given block number.
  error MerkleRootNotSet();

  /// @notice This error is thrown when trying to set a Merkle Root that has already been set for a given block.
  error MerkleRootAlreadySetForBlock();

  /// @notice This error is thrown when there is no extra ETH available for transfer.
  error NoExtraAmountAvailable();

  /// @notice This error is thrown when an action is performed by an address that is not the router.
  error OnlyRouter();

  /// @notice This error is thrown when trying to set the router address that is already set.
  error RouterAlreadySet();

  /// @notice This error is thrown when trying to set the stakeTogether address that is already set.
  error StakeTogetherAlreadySet();

  /// @notice Thrown if the shares amount being claimed is zero.
  error ZeroAmount();

  /// @notice Thrown if the address trying to make a claim is the zero address.
  error ZeroAddress();

  /// @notice Emitted when a new Merkle root is added.
  /// @param reportBlock The block report number corresponding to the Merkle root.
  /// @param merkleRoot The Merkle root.
  event AddMerkleRoot(uint256 indexed reportBlock, bytes32 merkleRoot);

  /// @notice Emitted when a claim is processed.
  /// @param blockNumber The report block number related to the claim.
  /// @param index The index of the claim within the Merkle tree.
  /// @param account The address of the account making the claim.
  /// @param sharesAmount The amount of shares claimed.
  /// @param merkleProof The Merkle proof corresponding to the claim.
  event Claim(
    uint256 indexed blockNumber,
    uint256 index,
    address indexed account,
    uint256 sharesAmount,
    bytes32[] merkleProof
  );

  /// @notice Emitted when a batch of claims is processed.
  /// @param claimer The address making the batch claims.
  /// @param numClaims The number of claims in the batch.
  /// @param totalAmount The total amount of the claims in the batch.
  event ClaimBatch(address indexed claimer, uint256 numClaims, uint256 totalAmount);

  /// @notice Emitted when ETH is received by the contract.
  /// @param amount The amount of ETH received.
  event ReceiveEther(uint256 indexed amount);

  /// @notice Emitted when the router address is set.
  /// @param router The address of the router.
  event SetRouter(address indexed router);

  /// @notice Emitted when the StakeTogether contract address is set.
  /// @param stakeTogether The address of the StakeTogether contract.
  event SetStakeTogether(address indexed stakeTogether);

  /// @notice Initializes the contract with initial settings.
  function initialize() external;

  /// @notice Pauses all contract functionalities.
  /// @dev Only callable by the admin role.
  function pause() external;

  /// @notice Unpauses all contract functionalities.
  /// @dev Only callable by the admin role.
  function unpause() external;

  /// @notice Receives Ether and emits an event logging the sender and amount.
  receive() external payable;

  /// @notice Transfers any extra amount of ETH in the contract to the StakeTogether fee address.
  /// @dev Only callable by the admin role.
  function transferExtraAmount() external;

  /// @notice Sets the StakeTogether contract address.
  /// @param _stakeTogether The address of the StakeTogether contract.
  /// @dev Only callable by the admin role.
  function setStakeTogether(address _stakeTogether) external;

  /// @notice Sets the Router contract address.
  /// @param _router The address of the router.
  /// @dev Only callable by the admin role.
  function setRouter(address _router) external;

  /// @notice Adds a new Merkle root for a given block number.
  /// @param _reportBlock The report block number.
  /// @param _root The Merkle root.
  /// @dev Only callable by the router.
  function addMerkleRoot(uint256 _reportBlock, bytes32 _root) external;

  /// @notice Claims a reward for a specific report block number.
  /// @param _reportBlock The report block number.
  /// @param _index The index in the Merkle tree.
  /// @param _account The address claiming the reward.
  /// @param _sharesAmount The amount of shares to claim.
  /// @param merkleProof The Merkle proof required to claim the reward.
  /// @dev Verifies the Merkle proof and transfers the reward shares.
  function claim(
    uint256 _reportBlock,
    uint256 _index,
    address _account,
    uint256 _sharesAmount,
    bytes32[] calldata merkleProof
  ) external;

  /// @notice Checks if a reward has been claimed for a specific index and block number.
  /// @param _reportBlock The block number.
  /// @param _index The index in the Merkle tree.
  /// @return Returns true if the reward has been claimed, false otherwise.
  function isClaimed(uint256 _reportBlock, uint256 _index) external view returns (bool);
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.22;

// This interface is designed to be compatible with the Vyper version.
/// @notice This is the Ethereum 2.0 deposit contract interface.
/// For more information see the Phase 0 specification under https://github.com/ethereum/eth2.0-specs
interface IDepositContract {
  /// @notice A processed deposit event.
  event DepositEvent(
    bytes pubkey,
    bytes withdrawal_credentials,
    bytes amount,
    bytes signature,
    bytes index
  );

  /// @notice Submit a Phase 0 DepositData object.
  /// @param pubkey A BLS12-381 public key.
  /// @param withdrawal_credentials Commitment to a public key for withdrawals.
  /// @param signature A BLS12-381 signature.
  /// @param deposit_data_root The SHA-256 hash of the SSZ-encoded DepositData object.
  /// Used as a protection against malformed input.
  function deposit(
    bytes calldata pubkey,
    bytes calldata withdrawal_credentials,
    bytes calldata signature,
    bytes32 deposit_data_root
  ) external payable;

  /// @notice Query the current deposit root hash.
  /// @return The deposit root hash.
  function get_deposit_root() external view returns (bytes32);

  /// @notice Query the current deposit count.
  /// @return The deposit count encoded as a little endian 64-bit number.
  function get_deposit_count() external view returns (bytes memory);
}

// SPDX-FileCopyrightText: 2023 Stake Together Labs <[email protected]>
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.22;

/// @title StakeTogether Report Configuration
/// @notice This module includes configuration and reports related to the StakeTogether protocol.
/// @custom:security-contact [email protected]
interface IRouter {
  /// @notice Emitted when a report for a specific block has already been executed.
  error AlreadyExecuted();

  /// @notice Emitted when an oracle has already reported for a specific block.
  error AlreadyReported();

  /// @notice Emitted when the beacon's balance is not enough to cover the loss amount.
  error BeaconBalanceTooLow();

  /// @notice Emitted when the block number has not yet reached the expected value for reporting.
  error BlockNumberNotReached();

  /// @notice Emitted when the report configuration is not yet set.
  error ConfigNotSet();

  /// @notice Emitted when the consensus is not yet delayed.
  error ConsensusNotDelayed();

  /// @notice Emitted when trying to execute too early.
  error EarlyExecution();

  /// @notice Emitted when the report's profit amount A is not enough for execution.
  error IncreaseOraclesToUseMargin();

  /// @notice Emitted when ETH balance is not enough for transaction.
  error InsufficientEthBalance();

  /// @notice Emitted when the oracles' margin is too high.
  error MarginTooHigh();

  /// @notice Emitted when there's no active consensus for a report block.
  error NoActiveConsensus();

  /// @notice Emitted when there is no pending execution for consensus.
  error NoPendingExecution();

  /// @notice Emitted when the report block is not yet reached.
  error OracleAlreadyReported();

  /// @notice Emitted when an oracle is not in the report oracles list.
  error OracleNotExists();

  /// @notice Emitted when an oracle is already in the report oracles list.
  error OracleExists();

  /// @notice Emitted when an oracle is already blacklisted.
  error OracleAlreadyBlacklisted();

  /// @notice Emitted when an oracle is blacklisted.
  error OracleBlacklisted();

  /// @notice Emitted when an oracle is not blacklisted.
  error OracleNotBlacklisted();

  /// @notice Emitted when an oracle is active.
  error OnlyActiveOracle();

  /// @notice Emitted when an action is attempted by an address other than the stakeTogether contract.
  error OnlyStakeTogether();

  /// @notice Emitted when there is a pending execution for consensus.
  error PendingExecution();

  /// @notice Emitted when the report delay blocks are too high.
  error ReportDelayBlocksTooHigh();

  /// @notice Emitted when a report for a specific block has already been revoked.
  error ReportRevoked();

  /// Emits when the report block is not greater than the last executed reportBlock.
  error ReportBlockShouldBeGreater();

  /// @notice Emitted when there are not enough oracles to use the margin.
  error RequiredMoreOracles();

  /// @notice Emitted when the quorum is not yet reached for consensus.
  error QuorumNotReached();

  /// @notice Emitted when a sentinel exists in the oracles list.
  error SentinelExists();

  /// @notice Emitted when a sentinel does not exist in the oracles list.
  error SentinelNotExists();

  /// @notice Emitted when trying to set the stakeTogether address that is already set.
  error StakeTogetherAlreadySet();

  /// @notice Emitted when the stakeTogether's withdraw balance is not enough.
  error WithdrawBalanceTooLow();

  /// @notice Thrown if the address trying to make a claim is the zero address.
  error ZeroAddress();

  /// @dev Config structure used for configuring the reporting mechanism in StakeTogether protocol.
  /// @param bunkerMode A boolean flag to indicate whether the bunker mode is active or not.
  /// @param reportFrequency The frequency in which reports need to be generated.
  /// @param reportDelayBlock The number of blocks to delay before a report is considered.
  /// @param oracleQuorum The quorum required among oracles for a report to be considered.
  struct Config {
    uint256 reportFrequency;
    uint256 reportDelayBlock;
    uint256 reportNoConsensusMargin;
    uint256 oracleQuorum;
  }

  /// @dev Report structure used for reporting the state of the protocol at different report blocks.
  /// @param reportBlock The specific block period for which this report is generated.
  /// @param merkleRoot The Merkle root hash representing the state of the data at this reportBlock.
  /// @param profitAmount The total profit amount generated during this reportBlock.
  /// @param profitShares The distribution of profits among stakeholders for this reportBlock.
  /// @param lossAmount The total loss amount incurred during this reportBlock.
  /// @param withdrawAmount The total amount withdrawn by users during this reportBlock.
  /// @param withdrawRefundAmount The amount refunded to users on withdrawal during this reportBlock.
  /// @param accumulatedReports The total number of reports accumulated up to this reportBlock.
  struct Report {
    uint256 reportBlock;
    bytes32 merkleRoot;
    uint256 profitAmount;
    uint256 profitShares;
    uint256 lossAmount;
    uint256 withdrawAmount;
    uint256 withdrawRefundAmount;
    uint256 accumulatedReports;
  }

  /// @notice Emitted when a new oracle is added for reporting.
  /// @param reportOracle The address of the oracle that was added.
  event AddReportOracle(address indexed reportOracle);

  /// @notice Emitted when an oracle is blacklisted.
  /// @param reportOracle The address of the oracle that was blacklisted.
  event BlacklistReportOracle(address indexed reportOracle);

  /// @notice Emitted when a report is approved by consensus.
  /// @param report The report details.
  event ConsensusApprove(uint256 indexed reportBlock, Report report);

  /// @notice Emitted when a report is approved by consensus.
  /// @param report The report details.
  event ConsensusFail(uint256 indexed reportBlock, Report report);

  /// @notice Emitted when a report is executed.
  /// @param sender The sneder oracle that execute the report.
  /// @param report The report details.
  event ExecuteReport(address indexed sender, uint256 indexed reportBlock, Report report);

  /// @notice Emitted when the contract receives ether.
  /// @param amount The amount of ether received.
  event ReceiveEther(uint256 indexed amount);

  /// @notice Emitted when Ether is received from Stake Together
  /// @param amount The amount of Ether received
  event ReceiveWithdrawEther(uint256 indexed amount);

  /// @notice Emitted when an oracle is removed from reporting.
  /// @param reportOracle The address of the oracle that was removed.
  event RemoveReportOracle(address indexed reportOracle);

  /// @notice Emitted when a consensus report is revoked.
  /// @param sender The sentinel that execute the revoke.
  /// @param reportBlock The block number at which the consensus was revoked.
  event RevokeConsensusReport(address indexed sender, uint256 indexed reportBlock);

  /// @notice Emitted when bunker mode is set.
  /// @param bunkerMode The bunker mode flag.
  event SetBunkerMode(bool indexed bunkerMode);

  /// @notice Emitted when the protocol configuration is updated.
  /// @param config The updated configuration.
  event SetConfig(Config indexed config);

  /// @notice Emitted when the StakeTogether address is set.
  /// @param stakeTogether The address of the StakeTogether contract.
  event SetStakeTogether(address indexed stakeTogether);

  /// @notice Emitted when the next report frequency is skipped.
  /// @param reportBlock The reportBlock for which the report frequency was skipped.
  /// @param reportNextBlock The block number at which the report frequency was skipped.
  event AdvanceNextBlock(uint256 indexed reportBlock, uint256 indexed reportNextBlock);

  /// @notice Emitted when a report is submitted.
  /// @param sender The address of the oracle that submitted the report.
  /// @param report The details of the submitted report.
  event SubmitReport(address indexed sender, Report indexed report);

  /// @notice Emitted when an oracle is unblacklisted.
  /// @param reportOracle The address of the oracle that was unblacklisted.
  event UnBlacklistReportOracle(address indexed reportOracle);

  /// @notice Initializes the contract after deployment.
  /// @dev Initializes various base contract functionalities and sets the initial state.
  /// @param _airdrop The address of the Airdrop contract.
  /// @param _withdrawals The address of the Withdrawals contract.
  function initialize(address _airdrop, address _withdrawals) external;

  /// @notice Pauses the contract functionalities.
  /// @dev Only the ADMIN_ROLE can pause the contract.
  function pause() external;

  /// @notice Resumes the contract functionalities after being paused.
  /// @dev Only the ADMIN_ROLE can unpause the contract.
  function unpause() external;

  /// @notice Receive ether to the contract.
  /// @dev An event is emitted with the amount of ether received.
  receive() external payable;

  /// @notice Allows the Stake Together to send ETH to the contract.
  /// @dev This function can only be called by the Stake Together.
  function receiveWithdrawEther() external payable;

  /// @notice Sets the address for the StakeTogether contract.
  /// @dev Only the ADMIN_ROLE can set the address, and the provided address must not be zero.
  /// @param _stakeTogether The address of the StakeTogether contract.
  function setStakeTogether(address _stakeTogether) external;

  /// @notice Sets the configuration parameters for the contract.
  /// @dev Only the ADMIN_ROLE can set the configuration, and it ensures a minimum report delay block.
  /// @param _config A struct containing various configuration parameters.
  function setConfig(Config memory _config) external;

  /// @notice Checks if an address is an active report oracle.
  /// @param _account Address of the oracle to be checked.
  function isReportOracle(address _account) external returns (bool);

  /// @notice Checks if a report oracle is blacklisted.
  /// @param _account Address of the oracle to be checked.
  function isReportOracleBlackListed(address _account) external view returns (bool);

  /// @notice Adds a new report oracle.
  /// @dev Only an account with the ORACLE_REPORT_MANAGER_ROLE can call this function.
  /// @param _account Address of the oracle to be added.
  function addReportOracle(address _account) external;

  /// @notice Removes an existing report oracle.
  /// @dev Only an account with the ORACLE_REPORT_MANAGER_ROLE can call this function.
  /// @param _account Address of the oracle to be removed.
  function removeReportOracle(address _account) external;

  /// @notice Blacklists a report oracle.
  /// @dev Only an account with the ORACLE_SENTINEL_ROLE can call this function.
  /// @param _account Address of the oracle to be blacklisted.
  function blacklistReportOracle(address _account) external;

  /// @notice Removes a report oracle from the blacklist.
  /// @dev Only an account with the ORACLE_SENTINEL_ROLE can call this function.
  /// @param _account Address of the oracle to be removed from the blacklist.
  function unBlacklistReportOracle(address _account) external;

  /// @notice Adds a new sentinel account.
  /// @dev Only an account with the ADMIN_ROLE can call this function.
  /// @param _account Address of the account to be added as sentinel.
  function addSentinel(address _account) external;

  /// @notice Removes an existing sentinel account.
  /// @dev Only an account with the ADMIN_ROLE can call this function.
  /// @param _account Address of the sentinel account to be removed.
  function removeSentinel(address _account) external;

  /// @notice Submit a report for the current reporting block.
  /// @dev Handles report submissions, checking for consensus or thresholds and preps next block if needed.
  /// It uses a combination of total votes for report to determine consensus.
  /// @param _report Data structure of the report.
  function submitReport(Report calldata _report) external;

  /// @notice Allows an active report oracle to execute an approved report.
  /// @dev Executes the actions based on the consensus-approved report.
  /// @param _report The data structure containing report details.
  function executeReport(Report calldata _report) external;

  /// @notice Forces to advance to nextReportBlock.
  function forceNextReportBlock() external;

  /// @notice Computes and returns the hash of a given report.
  /// @param _report The data structure containing report details.
  function getReportHash(Report calldata _report) external pure returns (bytes32);

  // @notice Revokes a consensus-approved report for a given reportBlock.
  /// @dev Only accounts with the ORACLE_SENTINEL_ROLE can call this function.
  /// @param _reportBlock The reportBlock for which the report was approved.
  function revokeConsensusReport(uint256 _reportBlock) external;

  /// @notice Validates if conditions to submit a report for an reportBlock are met.
  /// @dev Verifies conditions such as block number, consensus reportBlock, executed reports, and oracle votes.
  /// @param _report The data structure containing report details.
  function isReadyToSubmit(Report calldata _report) external view returns (bytes32);

  /// @notice Validates if conditions to execute a report are met.
  /// @dev Verifies conditions like revoked reports, executed reports, consensus reports, and beacon balance.
  /// @param _report The data structure containing report details.
  function isReadyToExecute(Report calldata _report) external view returns (bytes32);

  /// @notice Returns the next report block.
  function reportBlock() external view returns (uint256);
}

// SPDX-FileCopyrightText: 2023 Stake Together Labs <[email protected]>
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.22;

/// @title StakeTogether Interface
/// @notice This interface defines the essential structures and functions for the StakeTogether protocol.
/// @custom:security-contact [email protected]
interface IStakeTogether {
  /// @notice Thrown if the deposit limit is reached.
  error DepositLimitReached();

  /// @notice Thrown if the transfer is too early to be executed.
  error EarlyTransfer();

  /// @notice Thrown if the feature is disabled.
  error FeatureDisabled();

  /// @notice Thrown if the operation is a FlashLoan.
  error FlashLoan();

  /// @notice Thrown if there is insufficient beacon balance.
  error InsufficientBeaconBalance();

  /// @notice Thrown if there are insufficient funds in the account.
  error InsufficientAccountBalance();

  /// @notice Thrown if the allowance is insufficient.
  error InsufficientAllowance();

  /// @notice Thrown if there is insufficient pool balance.
  error InsufficientPoolBalance();

  /// @notice Thrown if there are insufficient shares.
  error InsufficientShares();

  /// @notice Thrown if the allocations length is invalid.
  error InvalidLength();

  /// @notice Thrown if the total percentage is invalid.
  error InvalidSum();

  /// @notice Thrown if the value is invalid.
  error InvalidValue();

  /// @notice Thrown if the pool size is less than the validator size.
  error InvalidSize();

  /// @notice Thrown if the total percentage is not equal to 1 ether.
  error InvalidTotalPercentage();

  /// @notice Thrown if the total supply is invalid.
  error InvalidTotalSupply();

  /// @notice Thrown if the number of delegations exceeds the maximum limit.
  error MaxDelegations();

  /// @notice Thrown if the withdrawal amount is less than the minimum required.
  error LessThanMinimumWithdraw();

  /// @notice Thrown if the caller is not the airdrop.
  error OnlyAirdrop();

  /// @notice Thrown if the caller is not the router.
  error OnlyRouter();

  /// @notice Thrown if the caller is not a validator oracle.
  error OnlyValidatorOracle();

  /// @notice Thrown if the caller does not have the appropriate role.
  error NotAuthorized();

  /// @notice Thrown if the account is not in anti-fraud list.
  error NotInAntiFraudList();

  /// @notice Thrown if the caller is not the current oracle.
  error NotIsCurrentValidatorOracle();

  /// @notice Thrown if there is not enough pool balance.
  error NotEnoughPoolBalance();

  /// @notice Thrown if there is not enough balance on pool.
  error NotEnoughBalanceOnPool();

  /// @notice Thrown if the pool is not found.
  error PoolNotFound();

  /// @notice Thrown if the pool already exists.
  error PoolExists();

  /// @notice Thrown if the listed in anti-fraud.
  error ListedInAntiFraud();

  /// @notice Thrown if the router balance is greater than the withdrawal balance.
  error RouterAlreadyHaveBalance();

  /// @notice Thrown if the router balance is lower than the withdrawal balance.
  error ShouldAnticipateWithdraw();

  /// @notice Thrown if the delegations length should be zero.
  error ShouldBeZeroLength();

  /// @notice Thrown if the validator oracle already exists.
  error ValidatorOracleExists();

  /// @notice Thrown if the validator oracle is not found.
  error ValidatorOracleNotFound();

  /// @notice Thrown if the withdrawal amount is zero.
  error ZeroAmount();

  /// @notice Thrown if the address is the zero address.
  error ZeroAddress();

  /// @notice Thrown if there is zero supply.
  error ZeroSupply();

  /// @notice Thrown if the deposit amount is less than the minimum required.
  error LessThanMinimumDeposit();

  /// @notice Thrown if the withdrawal pool limit is reached.
  error WithdrawalsPoolLimitReached();

  /// @notice Thrown if the withdrawal validator limit is reached.
  error WithdrawalsValidatorLimitWasReached();

  /// @notice Thrown if the withdrawal balance is zero.
  error WithdrawZeroBalance();

  /// @notice Thrown if the amount is not greater than the pool balance.
  error WithdrawFromPool();

  /// @notice Thrown if the validator already exists.
  error ValidatorExists();

  /// @notice Configuration for the StakeTogether protocol.
  struct Config {
    uint256 blocksPerDay; /// Number of blocks per day.
    uint256 depositLimit; /// Maximum amount of deposit.
    uint256 maxDelegations; /// Maximum number of delegations.
    uint256 minDepositAmount; /// Minimum amount to deposit.
    uint256 minWithdrawAmount; /// Minimum amount to withdraw.
    uint256 poolSize; /// Size of the pool.
    uint256 validatorSize; /// Size of the validator.
    uint256 withdrawalPoolLimit; /// Maximum amount of pool withdrawal.
    uint256 withdrawalValidatorLimit; /// Maximum amount of validator withdrawal.
    uint256 withdrawDelay; /// Delay Blocks for withdrawal.
    uint256 withdrawBeaconDelay; /// Delay Blocks for beacon withdrawal.
    Feature feature; /// Additional features configuration.
  }

  /// @notice Represents a delegation, including the pool address and shares.
  struct Delegation {
    address pool; /// Address of the delegated pool.
    uint256 percentage; /// Number of percentage in the delegation.
  }

  /// @notice Toggleable features for the protocol.
  struct Feature {
    bool AddPool; /// Enable/disable pool addition.
    bool Deposit; /// Enable/disable deposits.
    bool WithdrawPool; /// Enable/disable pool withdrawals.
    bool WithdrawBeacon; /// Enable/disable validator withdrawals.
  }

  /// @notice Represents the fee structure.
  struct Fee {
    uint256 value; /// Value of the fee.
    mapping(FeeRole => uint256) allocations; /// Allocation of fees among different roles.
  }

  /// @notice Types of deposits available.
  enum DepositType {
    Donation, /// Donation type deposit.
    Pool /// Pool type deposit.
  }

  /// @notice Types of withdrawals available.
  enum WithdrawType {
    Pool, /// Pool type withdrawal.
    Validator /// Validator type withdrawal.
  }

  /// @notice Types of fees within the protocol.
  enum FeeType {
    Entry, /// Fee for entering a stake.
    Rewards, /// Fee for staking rewards.
    Pool, /// Fee for pool staking.
    Validator /// Fee for validator staking.
  }

  /// @notice Different roles that are used in fee allocation
  enum FeeRole {
    Airdrop,
    Operator,
    StakeTogether,
    Sender
  }

  /// @notice Emitted when a pool is added
  /// @param pool The address of the pool
  /// @param listed Indicates if the pool is listed
  /// @param social Indicates if the pool is social
  /// @param index Indicates if the pool is an index
  /// @param amount The amount associated with the pool
  event AddPool(address indexed pool, bool listed, bool social, bool index, uint256 amount);

  /// @notice Emitted when a validator oracle is added
  /// @param account The address of the account
  event AddValidatorOracle(address indexed account);

  /// @notice Emitted when withdraw is prioritized
  /// @param oracle The address of the oracle
  /// @param amount The amount for the validator
  event AnticipateWithdrawBeacon(address indexed oracle, uint256 amount);

  /// @notice Emitted when shares are burned
  /// @param account The address of the account
  /// @param sharesAmount The amount of shares burned
  event BurnShares(address indexed account, uint256 sharesAmount);

  /// @notice Emitted when a validator is created
  /// @param oracle The address of the oracle
  /// @param amount The amount for the validator
  /// @param publicKey The public key of the validator
  /// @param withdrawalCredentials The withdrawal credentials
  /// @param signature The signature
  /// @param depositDataRoot The deposit data root
  event AddValidator(
    address indexed oracle,
    uint256 amount,
    bytes publicKey,
    bytes withdrawalCredentials,
    bytes signature,
    bytes32 depositDataRoot
  );

  /// @notice Emitted when a base deposit is made
  /// @param to The address to deposit to
  /// @param amount The deposit amount
  /// @param depositType The type of deposit (Donation, Pool)
  /// @param pool The address of the pool
  /// @param referral The address of the referral
  event DepositBase(
    address indexed to,
    uint256 amount,
    DepositType depositType,
    address indexed pool,
    bytes indexed referral
  );

  /// @notice Emitted when the deposit limit is reached
  /// @param sender The address of the sender
  /// @param amount The amount deposited
  event DepositLimitWasReached(address indexed sender, uint256 amount);

  /// @notice Emitted when rewards are minted
  /// @param to The address to mint to
  /// @param sharesAmount The amount of shares minted
  /// @param feeType The type of fee (e.g., StakeEntry, ProcessStakeRewards)
  /// @param feeRole The role associated with the fee
  event MintFeeShares(
    address indexed to,
    uint256 sharesAmount,
    FeeType indexed feeType,
    FeeRole indexed feeRole
  );

  /// @notice Emitted when shares are minted
  /// @param to The address to mint to
  /// @param sharesAmount The amount of shares minted
  event MintShares(address indexed to, uint256 sharesAmount);

  /// @notice Emitted when the next validator oracle is set
  /// @param index The index of the oracle
  /// @param account The address of the account
  event NextValidatorOracle(uint256 index, address indexed account);

  /// @dev This event emits when rewards are processed for staking, indicating the amount and the number of shares.
  /// @param amount The total amount of rewards that have been processed for staking.
  /// @param sharesAmount The total number of shares associated with the processed staking rewards.
  event ProcessStakeRewards(uint256 indexed amount, uint256 indexed sharesAmount);

  /// @dev This event emits when a validator's stake has been processed.
  /// @param account The address of the account whose stake as a validator has been processed.
  /// @param amount The amount the account staked that has been processed.
  event ProcessStakeValidator(address indexed account, uint256 amount);

  /// @notice Emitted when Ether is received
  /// @param amount The amount of Ether received
  event ReceiveEther(uint256 indexed amount);

  /// @notice Emitted when a pool is removed
  /// @param pool The address of the pool
  event RemovePool(address indexed pool);

  /// @notice Emitted when a validator oracle is removed
  /// @param account The address of the account
  event RemoveValidatorOracle(address indexed account);

  /// @notice Emitted when the beacon balance is set
  /// @param amount The amount set for the beacon balance
  event SetBeaconBalance(uint256 indexed amount);

  /// @notice Emitted when a user's anti-fraud status is changed
  /// @param sender The address that is executing
  /// @param account The address of the account
  /// @param isListed The new anti-fraud status of the account (true if listed, false otherwise)
  event SetAntiFraudStatus(address indexed sender, address indexed account, bool isListed);

  /// @notice Emitted when the configuration is set
  /// @param config The configuration struct
  event SetConfig(Config indexed config);

  /// @notice Emitted when a fee is set
  /// @param feeType The type of fee being set
  /// @param value The value of the fee
  /// @param allocations The allocations for the fee
  event SetFee(FeeType indexed feeType, uint256 value, uint256[] allocations);

  /// @notice Emitted when a fee address is set
  /// @param role The role associated with the fee
  /// @param account The address of the account
  event SetFeeAddress(FeeRole indexed role, address indexed account);

  /// @notice Emitted when the router is set
  /// @param router The address of the router
  event SetRouter(address indexed router);

  /// @notice Emitted when the StakeTogether address is set
  /// @param stakeTogether The address of StakeTogether
  event SetStakeTogether(address indexed stakeTogether);

  /// @notice Emitted when the validator size is set
  /// @param newValidatorSize The new size for the validator
  event SetValidatorSize(uint256 indexed newValidatorSize);

  /// @notice Emitted when the withdraw balance is set
  /// @param amount The amount set for the withdraw balance
  event SetWithdrawBalance(uint256 indexed amount);

  /// @notice Emitted when the withdrawal credentials are set
  /// @param withdrawalCredentials The withdrawal credentials bytes
  event SetWithdrawalsCredentials(bytes indexed withdrawalCredentials);

  /// @notice Emitted when shares are transferred
  /// @param from The address transferring from
  /// @param to The address transferring to
  /// @param sharesAmount The amount of shares transferred
  event TransferShares(address indexed from, address indexed to, uint256 sharesAmount);

  /// @notice Emitted when delegations are updated
  /// @param account The address of the account
  /// @param delegations The delegation array
  event UpdateDelegations(address indexed account, Delegation[] delegations);

  /// @notice Emitted when a base withdrawal is made
  /// @param account The address withdrawing
  /// @param amount The withdrawal amount
  /// @param withdrawType The type of withdrawal
  /// @param pool The address of the pool
  event WithdrawBase(
    address indexed account,
    uint256 amount,
    WithdrawType withdrawType,
    address indexed pool
  );

  /// @notice Emitted when the withdrawal limit is reached
  /// @param sender The address of the sender
  /// @param amount The amount withdrawn
  event WithdrawalsLimitWasReached(address indexed sender, uint256 amount, WithdrawType withdrawType);

  /// @notice Pauses the contract, preventing certain actions.
  /// @dev Only callable by the admin role.
  function pause() external;

  /// @notice Unpauses the contract, allowing actions to resume.
  /// @dev Only callable by the admin role.
  function unpause() external;

  /// @notice Receive function to accept incoming ETH transfers.
  receive() external payable;

  /// @notice Sets the configuration for the Stake Together Protocol.
  /// @dev Only callable by the admin role.
  /// @param _config Configuration settings to be applied.
  function setConfig(Config memory _config) external;

  /// @notice Returns the total supply of the pool (contract balance + beacon balance).
  /// @return Total supply value.
  function totalSupply() external view returns (uint256);

  /// @notice Calculates the shares amount by wei.
  /// @param _account The address of the account.
  /// @return Balance value of the given account.
  function balanceOf(address _account) external view returns (uint256);

  /// @notice Retrieves the current balance of the beacon.
  /// @dev This function returns the current stored value within the beacon.
  /// @return The balance held within the beacon in uint256 format.
  function beaconBalance() external view returns (uint256);

  /// @notice Retrieves the available balance for withdrawal.
  /// @dev This function returns the balance that is currently available for withdrawal.
  /// @return The available balance for withdrawal in uint256 format.
  function withdrawBalance() external view returns (uint256);

  /// @notice Calculates the wei amount by shares.
  /// @param _sharesAmount Amount of shares.
  /// @return Equivalent amount in wei.
  function weiByShares(uint256 _sharesAmount) external view returns (uint256);

  /// @notice Calculates the shares amount by wei.
  /// @param _amount Amount in wei.
  /// @return Equivalent amount in shares.
  function sharesByWei(uint256 _amount) external view returns (uint256);

  /// @notice Transfers an amount of wei to the specified address.
  /// @param _to The address to transfer to.
  /// @param _amount The amount to be transferred.
  /// @return True if the transfer was successful.
  function transfer(address _to, uint256 _amount) external returns (bool);

  /// @notice Transfers tokens from one address to another using an allowance mechanism.
  /// @param _from Address to transfer from.
  /// @param _to Address to transfer to.
  /// @param _amount Amount of tokens to transfer.
  /// @return A boolean value indicating whether the operation succeeded.
  function transferFrom(address _from, address _to, uint256 _amount) external returns (bool);

  /// @notice Returns the remaining number of tokens that an spender is allowed to spend on behalf of a token owner.
  /// @param _account Address of the token owner.
  /// @param _spender Address of the spender.
  /// @return A uint256 value representing the remaining number of tokens available for the spender.
  function allowance(address _account, address _spender) external view returns (uint256);

  /// @notice Sets the amount `_amount` as allowance of `_spender` over the caller's tokens.
  /// @param _spender Address of the spender.
  /// @param _amount Amount of allowance to be set.
  /// @return A boolean value indicating whether the operation succeeded.
  function approve(address _spender, uint256 _amount) external returns (bool);

  /// @notice Deposits into the pool with specific delegations.
  /// @param _pool the address of the pool.
  /// @param _referral The referral address.
  function depositPool(address _pool, bytes calldata _referral) external payable;

  /// @notice Deposits a donation to the specified address.
  /// @param _to The address to deposit to.
  /// @param _pool the address of the pool.
  /// @param _referral The referral address.
  function depositDonation(address _to, address _pool, bytes calldata _referral) external payable;

  /// @notice Withdraws from the pool with specific delegations and transfers the funds to the sender.
  /// @param _amount The amount to withdraw.
  /// @param _pool the address of the pool.
  function withdrawPool(uint256 _amount, address _pool) external;

  /// @notice Withdraws from the validators with specific delegations and mints tokens to the sender.
  /// @param _amount The amount to withdraw.
  /// @param _pool the address of the pool.
  function withdrawBeacon(uint256 _amount, address _pool) external;

  /// @notice Get the next withdraw block for account
  /// @param _account the address of the account.
  function getWithdrawBlock(address _account) external view returns (uint256);

  /// @notice Get the next withdraw beacon block for account
  /// @param _account the address of the account.
  function getWithdrawBeaconBlock(address _account) external view returns (uint256);

  /// @notice Adds an address to the anti-fraud list.
  /// @dev Callable only by accounts with the ANTI_FRAUD_SENTINEL_ROLE or ANTI_FRAUD_MANAGER_ROLE.
  /// Reverts if the provided address is the zero address or if the sender is not authorized.
  /// @param _account The address to be added to the anti-fraud list.
  function addToAntiFraud(address _account) external;

  /// @notice Removes an address from the anti-fraud list.
  /// @dev Callable only by accounts with the ANTI_FRAUD_MANAGER_ROLE.
  /// Reverts if the provided address is the zero address, not in the anti-fraud list, or if the sender is not authorized.
  /// @param _account The address to be removed from the anti-fraud list.
  function removeFromAntiFraud(address _account) external;

  /// @notice Check if an address is listed in the anti-fraud list.
  /// @param _account The address to be checked.
  /// @return true if the address is in the anti-fraud list, false otherwise.
  function isListedInAntiFraud(address _account) external view returns (bool);

  /// @notice Adds a permissionless pool with a specified address and listing status if feature enabled.
  /// @param _pool Address of the new pool.
  /// @param _listed True if the pool is listed.
  /// @param _social True if the pool is social.
  /// @param _index True if the pool is an index.
  function addPool(address _pool, bool _listed, bool _social, bool _index) external payable;

  /// @notice Removes a pool by its address.
  /// @param _pool The address of the pool to remove.
  function removePool(address _pool) external;

  /// @notice Updates delegations for the sender's address.
  /// @param _delegations The array of delegations to update.
  function updateDelegations(Delegation[] memory _delegations) external;

  /// @notice Adds a new validator oracle by its address.
  /// @param _account The address of the validator oracle to add.
  function addValidatorOracle(address _account) external;

  /// @notice Removes a validator oracle by its address.
  /// @param _account The address of the validator oracle to remove.
  function removeValidatorOracle(address _account) external;

  /// @notice Checks if an address is a validator oracle.
  /// @param _account The address to check.
  /// @return True if the address is a validator oracle, false otherwise.
  function isValidatorOracle(address _account) external view returns (bool);

  /// @notice Forces the selection of the next validator oracle.
  function forceNextValidatorOracle() external;

  /// @notice Sets the beacon balance to the specified amount.
  /// @param _amount The amount to set as the beacon balance.
  /// @dev Only the router address can call this function.
  function setBeaconBalance(uint256 _amount) external payable;

  /// @notice Sets the pending withdraw balance to the specified amount.
  /// @param _amount The amount to set as the pending withdraw balance.
  /// @dev Only the router address can call this function.
  function setWithdrawBalance(uint256 _amount) external payable;

  /// @notice Initiates a transfer to anticipate a validator's withdrawal.
  /// @dev Only a valid validator oracle can initiate this anticipation request.
  /// This function also checks the balance constraints before processing.
  function anticipateWithdrawBeacon() external;

  /// @notice Creates a new validator with the given parameters.
  /// @param _publicKey The public key of the validator.
  /// @param _signature The signature of the validator.
  /// @param _depositDataRoot The deposit data root for the validator.
  /// @dev Only a valid validator oracle can call this function.
  function addValidator(
    bytes calldata _publicKey,
    bytes calldata _signature,
    bytes32 _depositDataRoot
  ) external;

  /// @notice Function to claim rewards by transferring shares, accessible only by the airdrop fee address.
  /// @param _account Address to transfer the claimed rewards to.
  /// @param _sharesAmount Amount of shares to claim as rewards.
  function claimAirdrop(address _account, uint256 _sharesAmount) external;

  /// @notice Returns an array of fee roles.
  /// @return roles An array of FeeRole.
  function getFeesRoles() external pure returns (FeeRole[4] memory);

  /// @notice Sets the fee address for a given role.
  /// @param _role The role for which the address will be set.
  /// @param _address The address to set.
  /// @dev Only an admin can call this function.
  function setFeeAddress(FeeRole _role, address payable _address) external;

  /// @notice Gets the fee address for a given role.
  /// @param _role The role for which the address will be retrieved.
  /// @return The address associated with the given role.
  function getFeeAddress(FeeRole _role) external view returns (address);

  /// @notice Sets the fee for a given fee type.
  /// @param _feeType The type of fee to set.
  /// @param _value The value of the fee.
  /// @param _allocations The allocations for the fee.
  /// @dev Only an admin can call this function.
  function setFee(FeeType _feeType, uint256 _value, uint256[] calldata _allocations) external;

  /// @notice Process staking rewards and distributes the rewards based on shares.
  /// @param _sharesAmount The amount of shares related to the staking rewards.
  /// @dev Requires the caller to be the router contract.
  function processFeeRewards(uint256 _sharesAmount) external payable;
}

// SPDX-FileCopyrightText: 2023 Stake Together Labs <[email protected]>
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.22;

/// @title Interface for Validators Withdrawals
/// @notice A contract that represent the validator withdrawal functionality
/// @custom:security-contact [email protected]
interface IWithdrawals {
  /// @notice This error is thrown when use try withdraw before the beacon delay.
  error EarlyBeaconTransfer();

  /// @notice Thrown if the operation is a FlashLoan.
  error FlashLoan();

  /// @notice This error is thrown when the sender has insufficient STW balance to perform a transaction.
  error InsufficientStwBalance();

  /// @notice This error is thrown when the contract has insufficient ETH balance to perform a transaction.
  error InsufficientEthBalance();

  /// @notice Thrown if the listed in anti-fraud.
  error ListedInAntiFraud();

  /// @notice This error is thrown when there is no extra amount of ETH available to transfer.
  error NoExtraAmountAvailable();

  /// @notice This error is thrown when an action is attempted by an address other than the router.
  error OnlyRouter();

  /// @notice This error is thrown when an action is attempted by an address other than the stakeTogether contract.
  error OnlyStakeTogether();

  /// @notice This error is thrown when trying to set the router contract that has already been set.
  error RouterAlreadySet();

  /// @notice This error is thrown when trying to set the stakeTogether address that has already been set.
  error StakeTogetherAlreadySet();

  /// @notice Thrown if the shares amount being claimed is zero.
  error ZeroAmount();

  /// @notice Thrown if the address trying to make a claim is the zero address.
  error ZeroAddress();

  /// @notice Emitted when Ether is received
  /// @param amount The amount of Ether received
  event ReceiveEther(uint256 indexed amount);

  /// @notice Emitted when Ether is received from Router
  /// @param amount The amount of Ether received
  event ReceiveWithdrawEther(uint256 indexed amount);

  /// @notice Emitted when the Router address is set
  /// @param router The address of the StakeTogether contract
  event SetRouter(address indexed router);

  /// @notice Emitted when the StakeTogether address is set
  /// @param stakeTogether The address of the StakeTogether contract
  event SetStakeTogether(address indexed stakeTogether);

  /// @notice Emitted when a user withdraws funds
  /// @param user The address of the user who is withdrawing
  /// @param amount The amount being withdrawn
  event Withdraw(address indexed user, uint256 amount);

  /// @notice Initialization function for Withdrawals contract.
  function initialize() external;

  /// @notice Pauses withdrawals.
  /// @dev Only callable by the admin role.
  function pause() external;

  /// @notice Unpauses withdrawals.
  /// @dev Only callable by the admin role.
  function unpause() external;

  /// @notice Receive function to accept incoming ETH transfers.
  receive() external payable;

  /// @notice Allows the router to send ETH to the contract.
  /// @dev This function can only be called by the router.
  function receiveWithdrawEther() external payable;

  /// @notice Transfers any extra amount of ETH in the contract to the StakeTogether fee address.
  /// @dev Only callable by the admin role and requires that extra amount exists in the contract balance.
  function transferExtraAmount() external;

  /// @notice Sets the StakeTogether contract address.
  /// @param _stakeTogether The address of the new StakeTogether contract.
  /// @dev Only callable by the admin role.
  function setStakeTogether(address _stakeTogether) external;

  /// @notice Sets the Router contract address.
  /// @param _router The address of the router.
  /// @dev Only callable by the admin role.
  function setRouter(address _router) external;

  /// @notice Mints tokens to a specific address.
  /// @param _to Address to receive the minted tokens.
  /// @param _amount Amount of tokens to mint.
  /// @dev Only callable by the StakeTogether contract.
  function mint(address _to, uint256 _amount) external;

  /// @notice Withdraws the specified amount of ETH, burning tokens in exchange.
  /// @param _amount Amount of ETH to withdraw.
  /// @dev The caller must have a balance greater or equal to the amount, and the contract must have sufficient ETH balance.
  function withdraw(uint256 _amount) external;

  /// @notice Checks if the contract is ready to withdraw the specified amount.
  /// @param _amount Amount of ETH to check.
  /// @return A boolean indicating if the contract has sufficient balance to withdraw the specified amount.
  function isWithdrawReady(uint256 _amount) external view returns (bool);

  /// @notice Transfers an amount of wei to the specified address.
  /// @param _to The address to transfer to.
  /// @param _amount The amount to be transferred.
  /// @return True if the transfer was successful.
  function transfer(address _to, uint256 _amount) external returns (bool);

  /// @notice Transfers tokens from one address to another using an allowance mechanism.
  /// @param _from Address to transfer from.
  /// @param _to Address to transfer to.
  /// @param _amount Amount of tokens to transfer.
  /// @return A boolean value indicating whether the operation succeeded.
  function transferFrom(address _from, address _to, uint256 _amount) external returns (bool);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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