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//SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.13;

/*
 * ██████╗ ██████╗ ███████╗██╗    ██╗██╗███████╗███████╗
 * ██╔══██╗██╔══██╗██╔════╝██║    ██║██║██╔════╝██╔════╝
 * ██████╔╝██████╔╝█████╗  ██║ █╗ ██║██║█████╗  ███████╗
 * ██╔══██╗██╔══██╗██╔══╝  ██║███╗██║██║██╔══╝  ╚════██║
 * ██████╔╝██║  ██║███████╗╚███╔███╔╝██║███████╗███████║
 * ╚═════╝ ╚═╝  ╚═╝╚══════╝ ╚══╝╚══╝ ╚═╝╚══════╝╚══════╝
 */

// Imports
import "./EIP712Whitelisting.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/finance/PaymentSplitter.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

/// NFT Interface
interface INFT {
    function mint(address recipient, uint256 quantity) external;

    function areReservesMinted() external view returns (bool);

    function maxSupply() external view returns (uint256);

    function totalSupply() external view returns (uint256);
}

/**
 * @title The Minting Router contract.
 */
contract MintingRouter is Ownable, EIP712Whitelisting, ReentrancyGuard {
    // The available sale types.
    enum SaleRoundType {
        WHITELIST,
        PUBLIC
    }

    // The sale round details.
    struct SaleRound {
        // The type of the sale.
        SaleRoundType saleType;
        // The price of a token during the sale round.
        uint256 price;
        // The total number of tokens available for minting during the sale round.
        uint256 totalAmount;
        // The total number of tokens available for minting by a single wallet during the sale round.
        uint256 limitAmountPerWallet;
        // The maximum number of tokens available for minting per single transaction.
        uint256 maxAmountPerMint;
        // The flag that indicates if the sale round is enabled.
        bool enabled;
    }
    /// @notice Indicates that tokens are unlimited.
    uint256 public constant UNLIMITED_AMOUNT = 0;
    /// @notice The current sale round details.
    SaleRound public currentSaleRound;
    /// @notice The current sale round index.
    uint256 public currentSaleIndex;
    /// @notice The Brewies NFT contract.
    INFT private _nftContract;
    /// @notice The contract that allows to split funds between multiple accounts.
    PaymentSplitter public splitter;
    /// @notice The number of NFTs minted during a sale round.
    mapping(uint256 => uint256) private _mintedAmountPerRound;
    /// @notice The number of NFTs minted during a sale round per wallet.
    mapping(uint256 => mapping(address => uint256))
        private _mintedAmountPerAddress;

    /**
     * @notice The smart contract constructor that initializes the minting router.
     * @dev The sizes of payees and shares should be equal.
     * @param nftContract The NFT contract.
     * @param tokenName The name of the NFT token.
     * @param version The version of the project.
     * @param payees The addresses of the accounts between which the funds are split.
     * @param shares The percentages of funds received by addresses.
     */
    constructor(
        INFT nftContract,
        string memory tokenName,
        string memory version,
        address[] memory payees,
        uint256[] memory shares
    ) EIP712Whitelisting(tokenName, version) {
        // Initialize the variables.
        _nftContract = nftContract;
        splitter = new PaymentSplitter(payees, shares);
        // Set the initial dummy value for the current sale index.
        currentSaleIndex = type(uint256).max;
    }

    /**
     * @notice Validates sale rounds parameters.
     * @param totalAmount The total amount of NFTs available for the current sale round.
     * @param limitAmountPerWallet The total number of NFTs that can be minted by a single wallet during the sale round.
     * @param maxAmountPerMint The maximum number of tokens available for minting per single transaction.
     */
    modifier validateSaleRoundParams(
        bool isNewRound,
        uint256 totalAmount,
        uint256 limitAmountPerWallet,
        uint256 maxAmountPerMint
    ) {
        require(
            _totalTokensLeft() > 0 &&
            totalAmount <= _totalTokensLeft(),
            "INVALID_TOTAL_AMOUNT"
        );

        if (!isNewRound) {
            require(totalAmount >= _mintedAmountPerRound[currentSaleIndex], "INVALID_TOTAL_AMOUNT");
        }

        if (totalAmount != UNLIMITED_AMOUNT) {
            require(limitAmountPerWallet <= totalAmount,"INVALID_LIMIT_PER_WALLET");
            require(maxAmountPerMint <= totalAmount, "INVALID_MAX_PER_MINT");
        }

        if (limitAmountPerWallet != UNLIMITED_AMOUNT) {
            require(maxAmountPerMint <= limitAmountPerWallet, "INVALID_MAX_PER_MINT");
        }

        _;
    }

    /**
     * @notice Changes the addresses that receive payment shares.
     * @param payees The addresses of the accounts between which the funds are split.
     * @param shares The percentages of funds received by addresses.
     */
    function changePayees(address[] memory payees, uint256[] memory shares)
        external
        onlyOwner
    {
        splitter = new PaymentSplitter(payees, shares);
    }

    /**
     * @notice Changes the current sale details.
     * @param price The price of an NFT for the current sale round.
     * @param totalAmount The total amount of NFTs available for the current sale round.
     * @param limitAmountPerWallet The total number of NFTs that can be minted by a single wallet during the sale round.
     * @param maxAmountPerMint The maximum number of tokens available for minting per single transaction.
     */
    function changeSaleRoundParams(
        uint256 price,
        uint256 totalAmount,
        uint256 limitAmountPerWallet,
        uint256 maxAmountPerMint
    ) external onlyOwner validateSaleRoundParams(
        false,
        totalAmount,
        limitAmountPerWallet,
        maxAmountPerMint
    ) {
        currentSaleRound.price = price;
        currentSaleRound.totalAmount = totalAmount;
        currentSaleRound.limitAmountPerWallet = limitAmountPerWallet;
        currentSaleRound.maxAmountPerMint = maxAmountPerMint;
    }

    /**
     * @notice Creates a new sale round.
     * @dev Requires sales to be disabled and reserves to be minted.
     * @param saleType The type of the sale round (WHITELIST - 0, PUBLIC SALE - 1).
     * @param price The price of an NFT for the current sale round.
     * @param totalAmount The total amount of NFTs available for the current sale round.
     * @param limitAmountPerWallet The total number of NFTs that can be minted by a single wallet during the sale round.
     * @param maxAmountPerMint The maximum number of tokens available for minting per single transaction.
     */
    function createSaleRound(
        SaleRoundType saleType,
        uint256 price,
        uint256 totalAmount,
        uint256 limitAmountPerWallet,
        uint256 maxAmountPerMint
    ) external onlyOwner validateSaleRoundParams(
        true,
        totalAmount,
        limitAmountPerWallet,
        maxAmountPerMint
    ) {
         // Check if the sales are closed.
        require(
            currentSaleRound.enabled == false,
            "SALE_ROUND_IS_ENABLED"
        );

        // Check if the reserves are minted.
        bool reservesMinted = _nftContract.areReservesMinted();
        require(
            reservesMinted == true,
            "ALL_RESERVED_TOKENS_NOT_MINTED"
        );

        // Set new sale parameters.
        currentSaleRound.price = price;
        currentSaleRound.totalAmount = totalAmount;
        currentSaleRound.limitAmountPerWallet = limitAmountPerWallet;
        currentSaleRound.maxAmountPerMint = maxAmountPerMint;
        currentSaleRound.saleType = saleType;
        // Increment the sale round index.
        if (currentSaleIndex == type(uint256).max) {
            currentSaleIndex = 0;
        } else {
            currentSaleIndex += 1;
        }
    }

    /**
     * @notice Starts the sale round.
     */
    function enableSaleRound() external onlyOwner {
        require(currentSaleIndex != type(uint256).max, "NO_SALE_ROUND_CREATED");
        require(currentSaleRound.enabled == false, "SALE_ROUND_ENABLED_ALREADY");
        currentSaleRound.enabled = true;
    }

    /**
     * @notice Closes the sale round.
     */
    function disableSaleRound() external onlyOwner {
        require(currentSaleRound.enabled == true, "SALE_ROUND_DISABLED_ALREADY");
        currentSaleRound.enabled = false;
    }

    /**
     * @notice Mints NFTs during whitelist sale rounds.
     * @dev Requires the current sale round to be a WHITELIST round.
     * @param recipient The address that will receive the minted NFT.
     * @param quantity The number of NFTs to mint.
     * @param signature The signature of a whitelisted minter.
     */
    function whitelistMint(
        address recipient,
        uint256 quantity,
        bytes calldata signature
    ) external payable requiresWhitelist(signature) nonReentrant {
        require(
            currentSaleRound.saleType == SaleRoundType.WHITELIST && currentSaleRound.enabled,
            "WHITELIST_ROUND_NOT_ENABLED"
        );
        _mint(recipient, quantity);
    }

    /**
     * @notice Mints NFTs during public sale rounds.
     * @dev Requires the current sale round to be a PUBLIC round.
     * @param recipient The address that will receive the minted NFT.
     * @param quantity The number of NFTs to mint.
     */
    function publicMint(address recipient, uint256 quantity)
        external
        payable
        nonReentrant
    {
        require(
            currentSaleRound.saleType == SaleRoundType.PUBLIC && currentSaleRound.enabled,
            "PUBLIC_ROUND_NOT_ENABLED"
        );
        _mint(recipient, quantity);
    }

    /**
     * @notice Sets the address that is used during whitelist generation.
     * @param signer The address used during whitelist generation.
     */
    function setWhitelistSigningAddress(address signer) public onlyOwner {
        _setWhitelistSigningAddress(signer);
    }

    /**
     * @notice Releases the share to the specified account.
     * @dev The share of the address should be greater than 0.
     * @param account The address of the share receiver.
     */
    function release(address payable account) public onlyOwner {
        splitter.release(account);
    }

    /**
     * @notice Calculates the number of tokens a minter is allowed to mint.
     * @param minter The minter address.
     * @return The number of tokens that a minter can mint.
     */
    function allowedTokenCount(address minter) public view returns (uint256) {
        if (currentSaleRound.enabled == false) {
            return 0;
        }

        // Calculate the allowed number of tokens to mint by a wallet.
        uint256 allowedWalletCount = _totalTokensLeft();
        if (currentSaleRound.limitAmountPerWallet != UNLIMITED_AMOUNT) {
            allowedWalletCount = currentSaleRound.limitAmountPerWallet - _mintedAmountPerAddress[currentSaleIndex][minter];
        }

        // Calculate the limit of the number of tokens per single mint.
        uint256 allowedAmountPerMint = _totalTokensLeft();
        if (currentSaleRound.maxAmountPerMint != UNLIMITED_AMOUNT) {
            allowedAmountPerMint = currentSaleRound.maxAmountPerMint;
        }

        return _min(
            allowedAmountPerMint,
            _min(allowedWalletCount, tokensLeft())
        );
    }

    /**
     * @notice Returns the number of tokens left for the running sale round.
     */
    function tokensLeft() public view returns (uint256) {
        if (currentSaleRound.enabled == false) {
            return 0;
        }

        if (currentSaleRound.totalAmount == UNLIMITED_AMOUNT) {
            return _totalTokensLeft();
        }

        return currentSaleRound.totalAmount - _mintedAmountPerRound[currentSaleIndex];
    }

    /**
     * @notice Mints NFTs.
     * @param recipient The address that will receive the minted NFT.
     * @param quantity The number of NFTs to mint.
     */
    function _mint(
        address recipient,
        uint256 quantity
    ) private {
        require(quantity > 0, "ZERO_QUANTITY_NOT_ALLOWED");
        require(allowedTokenCount(recipient) >= quantity, "MAX_MINTS_EXCEEDED");
        require(msg.value >= currentSaleRound.price * quantity, "INSUFFICIENT_FUNDS");
        // Update the number of total tokens minted by the minter.
        _mintedAmountPerAddress[currentSaleIndex][recipient] += quantity;
        _mintedAmountPerRound[currentSaleIndex] += quantity;
        // Mint NFTs.
        _nftContract.mint(recipient, quantity);
        (bool sent, ) = payable(splitter).call{value: msg.value}("");
        require(sent, "FAIL_FUNDS_TRANSFER");
    }

    /**
     * @notice Returns the number of available tokens to mint left in the supply.
     * @return The number of available tokens to mint left in the supply.
     */
    function _totalTokensLeft() private view returns(uint256) {
        return _nftContract.maxSupply() - _nftContract.totalSupply();
    }

    /**
     * @notice Calculates a minimum of two values provided.
     * @return The minimum of two values.
     */
    function _min(uint256 a, uint256 b) private pure returns(uint256) {
        if (a < b) {
            return a;
        }

        return b;
    }
}

//SPDX-License-Identifier: Unlicense
pragma solidity 0.8.13;

import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";

contract EIP712Whitelisting {
  using ECDSA for bytes32;

  // The key used to sign whitelist signatures.
  // We will check to ensure that the key that signed the signature
  // is this one that we expect.
  address whitelistSigningKey = address(0);

  // Domain Separator is the EIP-712 defined structure that defines what contract
  // and chain these signatures can be used for.  This ensures people can't take
  // a signature used to mint on one contract and use it for another, or a signature
  // from testnet to replay on mainnet.
  // It has to be created in the constructor so we can dynamically grab the chainId.
  // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md#definition-of-domainseparator
  bytes32 public DOMAIN_SEPARATOR;

  // The typehash for the data type specified in the structured data
  // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md#rationale-for-typehash
  // This should match whats in the client side whitelist signing code
  // https://github.com/msfeldstein/EIP712-whitelisting/blob/main/test/signWhitelist.ts#L22
  bytes32 public constant MINTER_TYPEHASH = keccak256("Minter(address wallet)");

  constructor(string memory tokenName, string memory version) {
    // This should match whats in the client side whitelist signing code
    // https://github.com/msfeldstein/EIP712-whitelisting/blob/main/test/signWhitelist.ts#L12
    DOMAIN_SEPARATOR = keccak256(
      abi.encode(
        keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
        // This should match the domain you set in your client side signing.
        keccak256(bytes(tokenName)),
        keccak256(bytes(version)),
        block.chainid,
        address(this)
      )
    );
  }

  function _setWhitelistSigningAddress(address newSigningKey) internal {
    whitelistSigningKey = newSigningKey;
  }

  modifier requiresWhitelist(bytes calldata signature) {
    require(whitelistSigningKey != address(0), "Whitelist not enabled; please set the private key.");
    // Verify EIP-712 signature by recreating the data structure
    // that we signed on the client side, and then using that to recover
    // the address that signed the signature for this data.
    bytes32 digest = keccak256(abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR, keccak256(abi.encode(MINTER_TYPEHASH, msg.sender))));
    // Use the recover method to see what address was used to create
    // the signature on this data.
    // Note that if the digest doesn't exactly match what was signed we'll
    // get a random recovered address.
    address recoveredAddress = digest.recover(signature);
    require(recoveredAddress == whitelistSigningKey, "Invalid signature");
    _;
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (finance/PaymentSplitter.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/utils/SafeERC20.sol";
import "../utils/Address.sol";
import "../utils/Context.sol";

/**
 * @title PaymentSplitter
 * @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware
 * that the Ether will be split in this way, since it is handled transparently by the contract.
 *
 * The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each
 * account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim
 * an amount proportional to the percentage of total shares they were assigned.
 *
 * `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the
 * accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release}
 * function.
 *
 * NOTE: This contract assumes that ERC20 tokens will behave similarly to native tokens (Ether). Rebasing tokens, and
 * tokens that apply fees during transfers, are likely to not be supported as expected. If in doubt, we encourage you
 * to run tests before sending real value to this contract.
 */
contract PaymentSplitter is Context {
    event PayeeAdded(address account, uint256 shares);
    event PaymentReleased(address to, uint256 amount);
    event ERC20PaymentReleased(IERC20 indexed token, address to, uint256 amount);
    event PaymentReceived(address from, uint256 amount);

    uint256 private _totalShares;
    uint256 private _totalReleased;

    mapping(address => uint256) private _shares;
    mapping(address => uint256) private _released;
    address[] private _payees;

    mapping(IERC20 => uint256) private _erc20TotalReleased;
    mapping(IERC20 => mapping(address => uint256)) private _erc20Released;

    /**
     * @dev Creates an instance of `PaymentSplitter` where each account in `payees` is assigned the number of shares at
     * the matching position in the `shares` array.
     *
     * All addresses in `payees` must be non-zero. Both arrays must have the same non-zero length, and there must be no
     * duplicates in `payees`.
     */
    constructor(address[] memory payees, uint256[] memory shares_) payable {
        require(payees.length == shares_.length, "PaymentSplitter: payees and shares length mismatch");
        require(payees.length > 0, "PaymentSplitter: no payees");

        for (uint256 i = 0; i < payees.length; i++) {
            _addPayee(payees[i], shares_[i]);
        }
    }

    /**
     * @dev The Ether received will be logged with {PaymentReceived} events. Note that these events are not fully
     * reliable: it's possible for a contract to receive Ether without triggering this function. This only affects the
     * reliability of the events, and not the actual splitting of Ether.
     *
     * To learn more about this see the Solidity documentation for
     * https://solidity.readthedocs.io/en/latest/contracts.html#fallback-function[fallback
     * functions].
     */
    receive() external payable virtual {
        emit PaymentReceived(_msgSender(), msg.value);
    }

    /**
     * @dev Getter for the total shares held by payees.
     */
    function totalShares() public view returns (uint256) {
        return _totalShares;
    }

    /**
     * @dev Getter for the total amount of Ether already released.
     */
    function totalReleased() public view returns (uint256) {
        return _totalReleased;
    }

    /**
     * @dev Getter for the total amount of `token` already released. `token` should be the address of an IERC20
     * contract.
     */
    function totalReleased(IERC20 token) public view returns (uint256) {
        return _erc20TotalReleased[token];
    }

    /**
     * @dev Getter for the amount of shares held by an account.
     */
    function shares(address account) public view returns (uint256) {
        return _shares[account];
    }

    /**
     * @dev Getter for the amount of Ether already released to a payee.
     */
    function released(address account) public view returns (uint256) {
        return _released[account];
    }

    /**
     * @dev Getter for the amount of `token` tokens already released to a payee. `token` should be the address of an
     * IERC20 contract.
     */
    function released(IERC20 token, address account) public view returns (uint256) {
        return _erc20Released[token][account];
    }

    /**
     * @dev Getter for the address of the payee number `index`.
     */
    function payee(uint256 index) public view returns (address) {
        return _payees[index];
    }

    /**
     * @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the
     * total shares and their previous withdrawals.
     */
    function release(address payable account) public virtual {
        require(_shares[account] > 0, "PaymentSplitter: account has no shares");

        uint256 totalReceived = address(this).balance + totalReleased();
        uint256 payment = _pendingPayment(account, totalReceived, released(account));

        require(payment != 0, "PaymentSplitter: account is not due payment");

        _released[account] += payment;
        _totalReleased += payment;

        Address.sendValue(account, payment);
        emit PaymentReleased(account, payment);
    }

    /**
     * @dev Triggers a transfer to `account` of the amount of `token` tokens they are owed, according to their
     * percentage of the total shares and their previous withdrawals. `token` must be the address of an IERC20
     * contract.
     */
    function release(IERC20 token, address account) public virtual {
        require(_shares[account] > 0, "PaymentSplitter: account has no shares");

        uint256 totalReceived = token.balanceOf(address(this)) + totalReleased(token);
        uint256 payment = _pendingPayment(account, totalReceived, released(token, account));

        require(payment != 0, "PaymentSplitter: account is not due payment");

        _erc20Released[token][account] += payment;
        _erc20TotalReleased[token] += payment;

        SafeERC20.safeTransfer(token, account, payment);
        emit ERC20PaymentReleased(token, account, payment);
    }

    /**
     * @dev internal logic for computing the pending payment of an `account` given the token historical balances and
     * already released amounts.
     */
    function _pendingPayment(
        address account,
        uint256 totalReceived,
        uint256 alreadyReleased
    ) private view returns (uint256) {
        return (totalReceived * _shares[account]) / _totalShares - alreadyReleased;
    }

    /**
     * @dev Add a new payee to the contract.
     * @param account The address of the payee to add.
     * @param shares_ The number of shares owned by the payee.
     */
    function _addPayee(address account, uint256 shares_) private {
        require(account != address(0), "PaymentSplitter: account is the zero address");
        require(shares_ > 0, "PaymentSplitter: shares are 0");
        require(_shares[account] == 0, "PaymentSplitter: account already has shares");

        _payees.push(account);
        _shares[account] = shares_;
        _totalShares = _totalShares + shares_;
        emit PayeeAdded(account, shares_);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @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 ReentrancyGuard {
    // 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;

    uint256 private _status;

    constructor() {
        _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() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @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,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode 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 {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]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        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.
            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 if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode 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 {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        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]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        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.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // 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);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // 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);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @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) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        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_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @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 Context {
    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 v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @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://diligence.consensys.net/posts/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/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @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, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * 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.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @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`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves `amount` 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 amount) 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 `amount` 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 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` 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 amount
    ) external returns (bool);

    /**
     * @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);
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract INFT","name":"nftContract","type":"address"},{"internalType":"string","name":"tokenName","type":"string"},{"internalType":"string","name":"version","type":"string"},{"internalType":"address[]","name":"payees","type":"address[]"},{"internalType":"uint256[]","name":"shares","type":"uint256[]"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MINTER_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"UNLIMITED_AMOUNT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"minter","type":"address"}],"name":"allowedTokenCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"payees","type":"address[]"},{"internalType":"uint256[]","name":"shares","type":"uint256[]"}],"name":"changePayees","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint256","name":"totalAmount","type":"uint256"},{"internalType":"uint256","name":"limitAmountPerWallet","type":"uint256"},{"internalType":"uint256","name":"maxAmountPerMint","type":"uint256"}],"name":"changeSaleRoundParams","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum MintingRouter.SaleRoundType","name":"saleType","type":"uint8"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint256","name":"totalAmount","type":"uint256"},{"internalType":"uint256","name":"limitAmountPerWallet","type":"uint256"},{"internalType":"uint256","name":"maxAmountPerMint","type":"uint256"}],"name":"createSaleRound","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"currentSaleIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currentSaleRound","outputs":[{"internalType":"enum MintingRouter.SaleRoundType","name":"saleType","type":"uint8"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint256","name":"totalAmount","type":"uint256"},{"internalType":"uint256","name":"limitAmountPerWallet","type":"uint256"},{"internalType":"uint256","name":"maxAmountPerMint","type":"uint256"},{"internalType":"bool","name":"enabled","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"disableSaleRound","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"enableSaleRound","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"quantity","type":"uint256"}],"name":"publicMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address payable","name":"account","type":"address"}],"name":"release","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"signer","type":"address"}],"name":"setWhitelistSigningAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"splitter","outputs":[{"internalType":"contract PaymentSplitter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokensLeft","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"quantity","type":"uint256"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"whitelistMint","outputs":[],"stateMutability":"payable","type":"function"}]

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

-----Decoded View---------------
Arg [0] : nftContract (address): 0x052D3A950eb81C06857E5e57b2d86246689768CF
Arg [1] : tokenName (string): Brewies NFT
Arg [2] : version (string): 1.0.0
Arg [3] : payees (address[]): 0x37E0c3211B4d3e8328E78Bbd6faFBee7F93615F7,0x538ADace178a23062ec0482685AA9c76A349AB92,0x13f1b8b104d90e09898c01E1ccde297D52a29D90
Arg [4] : shares (uint256[]): 15,15,70

-----Encoded View---------------
17 Constructor Arguments found :
Arg [0] : 000000000000000000000000052d3a950eb81c06857e5e57b2d86246689768cf
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [4] : 00000000000000000000000000000000000000000000000000000000000001a0
Arg [5] : 000000000000000000000000000000000000000000000000000000000000000b
Arg [6] : 42726577696573204e4654000000000000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [8] : 312e302e30000000000000000000000000000000000000000000000000000000
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [10] : 00000000000000000000000037e0c3211b4d3e8328e78bbd6fafbee7f93615f7
Arg [11] : 000000000000000000000000538adace178a23062ec0482685aa9c76a349ab92
Arg [12] : 00000000000000000000000013f1b8b104d90e09898c01e1ccde297d52a29d90
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [14] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [15] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000046