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// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

import {IVotesUpgradeable} from "@openzeppelin/contracts-upgradeable/governance/utils/IVotesUpgradeable.sol";
import {SafeCastUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/math/SafeCastUpgradeable.sol";

import {IMembership} from "../../../../core/plugin/membership/IMembership.sol";
import {IDAO} from "../../../../core/dao/IDAO.sol";
import {RATIO_BASE, _applyRatioCeiled} from "../../../utils/Ratio.sol";
import {MajorityVotingBase} from "../MajorityVotingBase.sol";
import {IMajorityVoting} from "../IMajorityVoting.sol";

/// @title TokenVoting
/// @author Aragon Association - 2021-2023
/// @notice The majority voting implementation using an [OpenZepplin `Votes`](https://docs.openzeppelin.com/contracts/4.x/api/governance#Votes) compatible governance token.
/// @dev This contract inherits from `MajorityVotingBase` and implements the `IMajorityVoting` interface.
contract TokenVoting is IMembership, MajorityVotingBase {
    using SafeCastUpgradeable for uint256;

    /// @notice The [ERC-165](https://eips.ethereum.org/EIPS/eip-165) interface ID of the contract.
    bytes4 internal constant TOKEN_VOTING_INTERFACE_ID =
        this.initialize.selector ^ this.getVotingToken.selector;

    /// @notice An [OpenZepplin `Votes`](https://docs.openzeppelin.com/contracts/4.x/api/governance#Votes) compatible contract referencing the token being used for voting.
    IVotesUpgradeable private votingToken;

    /// @notice Thrown if the voting power is zero
    error NoVotingPower();

    /// @notice Initializes the component.
    /// @dev This method is required to support [ERC-1822](https://eips.ethereum.org/EIPS/eip-1822).
    /// @param _dao The IDAO interface of the associated DAO.
    /// @param _votingSettings The voting settings.
    /// @param _token The [ERC-20](https://eips.ethereum.org/EIPS/eip-20) token used for voting.
    function initialize(
        IDAO _dao,
        VotingSettings calldata _votingSettings,
        IVotesUpgradeable _token
    ) external initializer {
        __MajorityVotingBase_init(_dao, _votingSettings);

        votingToken = _token;

        emit MembershipContractAnnounced({definingContract: address(_token)});
    }

    /// @notice Checks if this or the parent contract supports an interface by its ID.
    /// @param _interfaceId The ID of the interface.
    /// @return Returns `true` if the interface is supported.
    function supportsInterface(bytes4 _interfaceId) public view virtual override returns (bool) {
        return
            _interfaceId == TOKEN_VOTING_INTERFACE_ID ||
            _interfaceId == type(IMembership).interfaceId ||
            super.supportsInterface(_interfaceId);
    }

    /// @notice getter function for the voting token.
    /// @dev public function also useful for registering interfaceId and for distinguishing from majority voting interface.
    /// @return The token used for voting.
    function getVotingToken() public view returns (IVotesUpgradeable) {
        return votingToken;
    }

    /// @inheritdoc MajorityVotingBase
    function totalVotingPower(uint256 _blockNumber) public view override returns (uint256) {
        return votingToken.getPastTotalSupply(_blockNumber);
    }

    /// @inheritdoc MajorityVotingBase
    function createProposal(
        bytes calldata _metadata,
        IDAO.Action[] calldata _actions,
        uint256 _allowFailureMap,
        uint64 _startDate,
        uint64 _endDate,
        VoteOption _voteOption,
        bool _tryEarlyExecution
    ) external override returns (uint256 proposalId) {
        uint256 snapshotBlock;
        unchecked {
            snapshotBlock = block.number - 1;
        }

        uint256 totalVotingPower_ = totalVotingPower(snapshotBlock);

        if (totalVotingPower_ == 0) {
            revert NoVotingPower();
        }

        if (votingToken.getPastVotes(_msgSender(), snapshotBlock) < minProposerVotingPower()) {
            revert ProposalCreationForbidden(_msgSender());
        }

        proposalId = _createProposal({
            _creator: _msgSender(),
            _metadata: _metadata,
            _startDate: _startDate,
            _endDate: _endDate,
            _actions: _actions,
            _allowFailureMap: _allowFailureMap
        });

        // Store proposal related information
        Proposal storage proposal_ = proposals[proposalId];

        (proposal_.parameters.startDate, proposal_.parameters.endDate) = _validateProposalDates(
            _startDate,
            _endDate
        );
        proposal_.parameters.snapshotBlock = snapshotBlock.toUint64();
        proposal_.parameters.votingMode = votingMode();
        proposal_.parameters.supportThreshold = supportThreshold();
        proposal_.parameters.minVotingPower = _applyRatioCeiled(
            totalVotingPower_,
            minParticipation()
        );

        // Reduce costs
        if (_allowFailureMap != 0) {
            proposal_.allowFailureMap = _allowFailureMap;
        }

        for (uint256 i; i < _actions.length; ) {
            proposal_.actions.push(_actions[i]);
            unchecked {
                ++i;
            }
        }

        if (_voteOption != VoteOption.None) {
            vote(proposalId, _voteOption, _tryEarlyExecution);
        }
    }

    /// @inheritdoc IMembership
    function isMember(address _account) external view returns (bool) {
        /// whatever condition
        return votingToken.getVotes(_account) > 0;
    }

    /// @inheritdoc MajorityVotingBase
    function _vote(
        uint256 _proposalId,
        VoteOption _voteOption,
        address _voter,
        bool _tryEarlyExecution
    ) internal override {
        Proposal storage proposal_ = proposals[_proposalId];

        // This could re-enter, though we can assume the governance token is not malicious
        uint256 votingPower = votingToken.getPastVotes(_voter, proposal_.parameters.snapshotBlock);
        VoteOption state = proposal_.voters[_voter];

        // If voter had previously voted, decrease count
        if (state == VoteOption.Yes) {
            proposal_.tally.yes = proposal_.tally.yes - votingPower;
        } else if (state == VoteOption.No) {
            proposal_.tally.no = proposal_.tally.no - votingPower;
        } else if (state == VoteOption.Abstain) {
            proposal_.tally.abstain = proposal_.tally.abstain - votingPower;
        }

        // write the updated/new vote for the voter.
        if (_voteOption == VoteOption.Yes) {
            proposal_.tally.yes = proposal_.tally.yes + votingPower;
        } else if (_voteOption == VoteOption.No) {
            proposal_.tally.no = proposal_.tally.no + votingPower;
        } else if (_voteOption == VoteOption.Abstain) {
            proposal_.tally.abstain = proposal_.tally.abstain + votingPower;
        }

        proposal_.voters[_voter] = _voteOption;

        emit VoteCast({
            proposalId: _proposalId,
            voter: _voter,
            voteOption: _voteOption,
            votingPower: votingPower
        });

        if (_tryEarlyExecution && _canExecute(_proposalId)) {
            _execute(_proposalId);
        }
    }

    /// @inheritdoc MajorityVotingBase
    function _canVote(
        uint256 _proposalId,
        address _account,
        VoteOption _voteOption
    ) internal view override returns (bool) {
        Proposal storage proposal_ = proposals[_proposalId];

        // The proposal vote hasn't started or has already ended.
        if (!_isProposalOpen(proposal_)) {
            return false;
        }

        // The voter votes `None` which is not allowed.
        if (_voteOption == VoteOption.None) {
            return false;
        }

        // The voter has no voting power.
        if (votingToken.getPastVotes(_account, proposal_.parameters.snapshotBlock) == 0) {
            return false;
        }

        // The voter has already voted but vote replacment is not allowed.
        if (
            proposal_.voters[_account] != VoteOption.None &&
            proposal_.parameters.votingMode != VotingMode.VoteReplacement
        ) {
            return false;
        }

        return true;
    }

    /// @dev This empty reserved space is put in place to allow future versions to add new
    /// variables without shifting down storage in the inheritance chain.
    /// https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (governance/utils/IVotes.sol)
pragma solidity ^0.8.0;

/**
 * @dev Common interface for {ERC20Votes}, {ERC721Votes}, and other {Votes}-enabled contracts.
 *
 * _Available since v4.5._
 */
interface IVotesUpgradeable {
    /**
     * @dev Emitted when an account changes their delegate.
     */
    event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);

    /**
     * @dev Emitted when a token transfer or delegate change results in changes to a delegate's number of votes.
     */
    event DelegateVotesChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance);

    /**
     * @dev Returns the current amount of votes that `account` has.
     */
    function getVotes(address account) external view returns (uint256);

    /**
     * @dev Returns the amount of votes that `account` had at the end of a past block (`blockNumber`).
     */
    function getPastVotes(address account, uint256 blockNumber) external view returns (uint256);

    /**
     * @dev Returns the total supply of votes available at the end of a past block (`blockNumber`).
     *
     * NOTE: This value is the sum of all available votes, which is not necessarily the sum of all delegated votes.
     * Votes that have not been delegated are still part of total supply, even though they would not participate in a
     * vote.
     */
    function getPastTotalSupply(uint256 blockNumber) external view returns (uint256);

    /**
     * @dev Returns the delegate that `account` has chosen.
     */
    function delegates(address account) external view returns (address);

    /**
     * @dev Delegates votes from the sender to `delegatee`.
     */
    function delegate(address delegatee) external;

    /**
     * @dev Delegates votes from signer to `delegatee`.
     */
    function delegateBySig(
        address delegatee,
        uint256 nonce,
        uint256 expiry,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.0;

/**
 * @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 IERC1822ProxiableUpgradeable {
    /**
     * @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 v4.4.1 (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol)

pragma solidity ^0.8.2;

import "../beacon/IBeaconUpgradeable.sol";
import "../../interfaces/draft-IERC1822Upgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/StorageSlotUpgradeable.sol";
import "../utils/Initializable.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967UpgradeUpgradeable is Initializable {
    function __ERC1967Upgrade_init() internal onlyInitializing {
    }

    function __ERC1967Upgrade_init_unchained() internal onlyInitializing {
    }
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallUUPS(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        // Upgrades from old implementations will perform a rollback test. This test requires the new
        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
        // this special case will break upgrade paths from old UUPS implementation to new ones.
        if (StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT).value) {
            _setImplementation(newImplementation);
        } else {
            try IERC1822ProxiableUpgradeable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
            } catch {
                revert("ERC1967Upgrade: new implementation is not UUPS");
            }
            _upgradeToAndCall(newImplementation, data, forceCall);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

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

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {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 bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

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

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(
        address newBeacon,
        bytes memory data,
        bool forceCall
    ) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data);
        }
    }

    /**
     * @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) private returns (bytes memory) {
        require(AddressUpgradeable.isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return AddressUpgradeable.verifyCallResult(success, returndata, "Address: low-level delegate call failed");
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.1) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @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]
 * ```
 * 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 Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 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 functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _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 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _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() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @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 {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (proxy/utils/UUPSUpgradeable.sol)

pragma solidity ^0.8.0;

import "../../interfaces/draft-IERC1822Upgradeable.sol";
import "../ERC1967/ERC1967UpgradeUpgradeable.sol";
import "./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.
 *
 * _Available since v4.1._
 */
abstract contract UUPSUpgradeable is Initializable, IERC1822ProxiableUpgradeable, ERC1967UpgradeUpgradeable {
    function __UUPSUpgradeable_init() internal onlyInitializing {
    }

    function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
    }
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
    address private immutable __self = address(this);

    /**
     * @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() {
        require(address(this) != __self, "Function must be called through delegatecall");
        require(_getImplementation() == __self, "Function must be called through active proxy");
        _;
    }

    /**
     * @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() {
        require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall");
        _;
    }

    /**
     * @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 override notDelegated returns (bytes32) {
        return _IMPLEMENTATION_SLOT;
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     */
    function upgradeTo(address newImplementation) external virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, new bytes(0), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
     * encoded in `data`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, data, true);
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) 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(errorMessage);
        }
    }
}

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

pragma solidity ^0.8.0;
import "../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;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

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

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library CountersUpgradeable {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../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);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal onlyInitializing {
    }

    function __ERC165_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @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 IERC165Upgradeable {
    /**
     * @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 v4.8.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.

pragma solidity ^0.8.0;

/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 *
 * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
 * all math on `uint256` and `int256` and then downcasting.
 */
library SafeCastUpgradeable {
    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
        return uint248(value);
    }

    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
        return uint240(value);
    }

    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
        return uint232(value);
    }

    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.2._
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
        return uint216(value);
    }

    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
        return uint208(value);
    }

    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
        return uint200(value);
    }

    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
        return uint192(value);
    }

    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
        return uint184(value);
    }

    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
        return uint176(value);
    }

    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
        return uint168(value);
    }

    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
        return uint160(value);
    }

    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
        return uint152(value);
    }

    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
        return uint144(value);
    }

    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
        return uint136(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v2.5._
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
        return uint120(value);
    }

    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
        return uint112(value);
    }

    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
        return uint104(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.2._
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
        return uint88(value);
    }

    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
        return uint80(value);
    }

    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
        return uint72(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v2.5._
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
        return uint56(value);
    }

    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
        return uint48(value);
    }

    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
        return uint40(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v2.5._
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
        return uint24(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v2.5._
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v2.5._
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     *
     * _Available since v3.0._
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        require(value >= 0, "SafeCast: value must be positive");
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toInt248(int256 value) internal pure returns (int248 downcasted) {
        downcasted = int248(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 248 bits");
    }

    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toInt240(int256 value) internal pure returns (int240 downcasted) {
        downcasted = int240(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 240 bits");
    }

    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toInt232(int256 value) internal pure returns (int232 downcasted) {
        downcasted = int232(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 232 bits");
    }

    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.7._
     */
    function toInt224(int256 value) internal pure returns (int224 downcasted) {
        downcasted = int224(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 224 bits");
    }

    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toInt216(int256 value) internal pure returns (int216 downcasted) {
        downcasted = int216(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 216 bits");
    }

    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toInt208(int256 value) internal pure returns (int208 downcasted) {
        downcasted = int208(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 208 bits");
    }

    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toInt200(int256 value) internal pure returns (int200 downcasted) {
        downcasted = int200(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 200 bits");
    }

    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toInt192(int256 value) internal pure returns (int192 downcasted) {
        downcasted = int192(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 192 bits");
    }

    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toInt184(int256 value) internal pure returns (int184 downcasted) {
        downcasted = int184(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 184 bits");
    }

    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toInt176(int256 value) internal pure returns (int176 downcasted) {
        downcasted = int176(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 176 bits");
    }

    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toInt168(int256 value) internal pure returns (int168 downcasted) {
        downcasted = int168(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 168 bits");
    }

    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toInt160(int256 value) internal pure returns (int160 downcasted) {
        downcasted = int160(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 160 bits");
    }

    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toInt152(int256 value) internal pure returns (int152 downcasted) {
        downcasted = int152(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 152 bits");
    }

    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toInt144(int256 value) internal pure returns (int144 downcasted) {
        downcasted = int144(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 144 bits");
    }

    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toInt136(int256 value) internal pure returns (int136 downcasted) {
        downcasted = int136(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 136 bits");
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v3.1._
     */
    function toInt128(int256 value) internal pure returns (int128 downcasted) {
        downcasted = int128(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 128 bits");
    }

    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toInt120(int256 value) internal pure returns (int120 downcasted) {
        downcasted = int120(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 120 bits");
    }

    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toInt112(int256 value) internal pure returns (int112 downcasted) {
        downcasted = int112(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 112 bits");
    }

    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toInt104(int256 value) internal pure returns (int104 downcasted) {
        downcasted = int104(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 104 bits");
    }

    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.7._
     */
    function toInt96(int256 value) internal pure returns (int96 downcasted) {
        downcasted = int96(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 96 bits");
    }

    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toInt88(int256 value) internal pure returns (int88 downcasted) {
        downcasted = int88(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 88 bits");
    }

    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toInt80(int256 value) internal pure returns (int80 downcasted) {
        downcasted = int80(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 80 bits");
    }

    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toInt72(int256 value) internal pure returns (int72 downcasted) {
        downcasted = int72(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 72 bits");
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v3.1._
     */
    function toInt64(int256 value) internal pure returns (int64 downcasted) {
        downcasted = int64(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 64 bits");
    }

    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toInt56(int256 value) internal pure returns (int56 downcasted) {
        downcasted = int56(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 56 bits");
    }

    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toInt48(int256 value) internal pure returns (int48 downcasted) {
        downcasted = int48(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 48 bits");
    }

    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toInt40(int256 value) internal pure returns (int40 downcasted) {
        downcasted = int40(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 40 bits");
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v3.1._
     */
    function toInt32(int256 value) internal pure returns (int32 downcasted) {
        downcasted = int32(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 32 bits");
    }

    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toInt24(int256 value) internal pure returns (int24 downcasted) {
        downcasted = int24(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 24 bits");
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v3.1._
     */
    function toInt16(int256 value) internal pure returns (int16 downcasted) {
        downcasted = int16(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 16 bits");
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v3.1._
     */
    function toInt8(int256 value) internal pure returns (int8 downcasted) {
        downcasted = int8(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 8 bits");
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     *
     * _Available since v3.0._
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
        return int256(value);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @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:
 * ```
 * 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(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlotUpgradeable {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 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
        }
    }
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

/// @title IDAO
/// @author Aragon Association - 2022-2023
/// @notice The interface required for DAOs within the Aragon App DAO framework.
interface IDAO {
    /// @notice The action struct to be consumed by the DAO's `execute` function resulting in an external call.
    /// @param to The address to call.
    /// @param value The native token value to be sent with the call.
    /// @param data The bytes-encoded function selector and calldata for the call.
    struct Action {
        address to;
        uint256 value;
        bytes data;
    }

    /// @notice Checks if an address has permission on a contract via a permission identifier and considers if `ANY_ADDRESS` was used in the granting process.
    /// @param _where The address of the contract.
    /// @param _who The address of a EOA or contract to give the permissions.
    /// @param _permissionId The permission identifier.
    /// @param _data The optional data passed to the `PermissionCondition` registered.
    /// @return Returns true if the address has permission, false if not.
    function hasPermission(
        address _where,
        address _who,
        bytes32 _permissionId,
        bytes memory _data
    ) external view returns (bool);

    /// @notice Updates the DAO metadata (e.g., an IPFS hash).
    /// @param _metadata The IPFS hash of the new metadata object.
    function setMetadata(bytes calldata _metadata) external;

    /// @notice Emitted when the DAO metadata is updated.
    /// @param metadata The IPFS hash of the new metadata object.
    event MetadataSet(bytes metadata);

    /// @notice Executes a list of actions. If no failure map is provided, one failing action results in the entire excution to be reverted. If a non-zero failure map is provided, allowed actions can fail without the remaining actions being reverted.
    /// @param _callId The ID of the call. The definition of the value of `callId` is up to the calling contract and can be used, e.g., as a nonce.
    /// @param _actions The array of actions.
    /// @param _allowFailureMap A bitmap allowing execution to succeed, even if individual actions might revert. If the bit at index `i` is 1, the execution succeeds even if the `i`th action reverts. A failure map value of 0 requires every action to not revert.
    /// @return The array of results obtained from the executed actions in `bytes`.
    /// @return The constructed failureMap which contains which actions have actually failed.
    function execute(
        bytes32 _callId,
        Action[] memory _actions,
        uint256 _allowFailureMap
    ) external returns (bytes[] memory, uint256);

    /// @notice Emitted when a proposal is executed.
    /// @param actor The address of the caller.
    /// @param callId The ID of the call.
    /// @param actions The array of actions executed.
    /// @param failureMap The failure map encoding which actions have failed.
    /// @param execResults The array with the results of the executed actions.
    /// @dev The value of `callId` is defined by the component/contract calling the execute function. A `Plugin` implementation can use it, for example, as a nonce.
    event Executed(
        address indexed actor,
        bytes32 callId,
        Action[] actions,
        uint256 failureMap,
        bytes[] execResults
    );

    /// @notice Emitted when a standard callback is registered.
    /// @param interfaceId The ID of the interface.
    /// @param callbackSelector The selector of the callback function.
    /// @param magicNumber The magic number to be registered for the callback function selector.
    event StandardCallbackRegistered(
        bytes4 interfaceId,
        bytes4 callbackSelector,
        bytes4 magicNumber
    );

    /// @notice Deposits (native) tokens to the DAO contract with a reference string.
    /// @param _token The address of the token or address(0) in case of the native token.
    /// @param _amount The amount of tokens to deposit.
    /// @param _reference The reference describing the deposit reason.
    function deposit(address _token, uint256 _amount, string calldata _reference) external payable;

    /// @notice Emitted when a token deposit has been made to the DAO.
    /// @param sender The address of the sender.
    /// @param token The address of the deposited token.
    /// @param amount The amount of tokens deposited.
    /// @param _reference The reference describing the deposit reason.
    event Deposited(
        address indexed sender,
        address indexed token,
        uint256 amount,
        string _reference
    );

    /// @notice Emitted when a native token deposit has been made to the DAO.
    /// @dev This event is intended to be emitted in the `receive` function and is therefore bound by the gas limitations for `send`/`transfer` calls introduced by [ERC-2929](https://eips.ethereum.org/EIPS/eip-2929).
    /// @param sender The address of the sender.
    /// @param amount The amount of native tokens deposited.
    event NativeTokenDeposited(address sender, uint256 amount);

    /// @notice Setter for the trusted forwarder verifying the meta transaction.
    /// @param _trustedForwarder The trusted forwarder address.
    function setTrustedForwarder(address _trustedForwarder) external;

    /// @notice Getter for the trusted forwarder verifying the meta transaction.
    /// @return The trusted forwarder address.
    function getTrustedForwarder() external view returns (address);

    /// @notice Emitted when a new TrustedForwarder is set on the DAO.
    /// @param forwarder the new forwarder address.
    event TrustedForwarderSet(address forwarder);

    /// @notice Setter for the [ERC-1271](https://eips.ethereum.org/EIPS/eip-1271) signature validator contract.
    /// @param _signatureValidator The address of the signature validator.
    function setSignatureValidator(address _signatureValidator) external;

    /// @notice Emitted when the signature validator address is updated.
    /// @param signatureValidator The address of the signature validator.
    event SignatureValidatorSet(address signatureValidator);

    /// @notice Checks whether a signature is valid for the provided hash by forwarding the call to the set [ERC-1271](https://eips.ethereum.org/EIPS/eip-1271) signature validator contract.
    /// @param _hash The hash of the data to be signed.
    /// @param _signature The signature byte array associated with `_hash`.
    /// @return Returns the `bytes4` magic value `0x1626ba7e` if the signature is valid.
    function isValidSignature(bytes32 _hash, bytes memory _signature) external returns (bytes4);

    /// @notice Registers an ERC standard having a callback by registering its [ERC-165](https://eips.ethereum.org/EIPS/eip-165) interface ID and callback function signature.
    /// @param _interfaceId The ID of the interface.
    /// @param _callbackSelector The selector of the callback function.
    /// @param _magicNumber The magic number to be registered for the function signature.
    function registerStandardCallback(
        bytes4 _interfaceId,
        bytes4 _callbackSelector,
        bytes4 _magicNumber
    ) external;
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

import {ContextUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol";

import {IDAO} from "../../dao/IDAO.sol";
import {_auth} from "../../utils/auth.sol";

/// @title DaoAuthorizableUpgradeable
/// @author Aragon Association - 2022-2023
/// @notice An abstract contract providing a meta-transaction compatible modifier for upgradeable or cloneable contracts to authorize function calls through an associated DAO.
/// @dev Make sure to call `__DaoAuthorizableUpgradeable_init` during initialization of the inheriting contract.
abstract contract DaoAuthorizableUpgradeable is ContextUpgradeable {
    /// @notice The associated DAO managing the permissions of inheriting contracts.
    IDAO private dao_;

    /// @notice Initializes the contract by setting the associated DAO.
    /// @param _dao The associated DAO address.
    function __DaoAuthorizableUpgradeable_init(IDAO _dao) internal onlyInitializing {
        dao_ = _dao;
    }

    /// @notice Returns the DAO contract.
    /// @return The DAO contract.
    function dao() public view returns (IDAO) {
        return dao_;
    }

    /// @notice A modifier to make functions on inheriting contracts authorized. Permissions to call the function are checked through the associated DAO's permission manager.
    /// @param _permissionId The permission identifier required to call the method this modifier is applied to.
    modifier auth(bytes32 _permissionId) {
        _auth(dao_, address(this), _msgSender(), _permissionId, _msgData());
        _;
    }

    /// @notice This empty reserved space is put in place to allow future versions to add new variables without shifting down storage in the inheritance chain (see [OpenZepplins guide about storage gaps](https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps)).
    uint256[49] private __gap;
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

/// @title IPlugin
/// @author Aragon Association - 2022-2023
/// @notice An interface defining the traits of a plugin.
interface IPlugin {
    enum PluginType {
        UUPS,
        Cloneable,
        Constructable
    }

    /// @notice returns the plugin's type
    function pluginType() external view returns (PluginType);
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

import {IDAO} from "../../dao/IDAO.sol";

/// @title IProposal
/// @author Aragon Association - 2022-2023
/// @notice An interface to be implemented by DAO plugins that define membership.
interface IMembership {
    /// @notice Emitted when members are added to the DAO plugin.
    /// @param members The list of new members being added.
    event MembersAdded(address[] members);

    /// @notice Emitted when members are removed from the DAO plugin.
    /// @param members The list of existing members being removed.
    event MembersRemoved(address[] members);

    /// @notice Emitted to announce the membership being defined by a contract.
    /// @param definingContract The contract defining the membership.
    event MembershipContractAnnounced(address indexed definingContract);

    /// @notice Checks if an account is a member of the DAO.
    /// @param _account The address of the account to be checked.
    /// @return Whether the account is a member or not.
    /// @dev This function must be implemented in the plugin contract that introduces the members to the DAO.
    function isMember(address _account) external view returns (bool);
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

import {UUPSUpgradeable} from "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
import {IERC1822ProxiableUpgradeable} from "@openzeppelin/contracts-upgradeable/interfaces/draft-IERC1822Upgradeable.sol";
import {ERC165Upgradeable} from "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";

import {IDAO} from "../dao/IDAO.sol";
import {DaoAuthorizableUpgradeable} from "./dao-authorizable/DaoAuthorizableUpgradeable.sol";
import {IPlugin} from "./IPlugin.sol";

/// @title PluginUUPSUpgradeable
/// @author Aragon Association - 2022-2023
/// @notice An abstract, upgradeable contract to inherit from when creating a plugin being deployed via the UUPS pattern (see [ERC-1822](https://eips.ethereum.org/EIPS/eip-1822)).
abstract contract PluginUUPSUpgradeable is
    IPlugin,
    ERC165Upgradeable,
    UUPSUpgradeable,
    DaoAuthorizableUpgradeable
{
    // NOTE: When adding new state variables to the contract, the size of `_gap` has to be adapted below as well.

    /// @notice Disables the initializers on the implementation contract to prevent it from being left uninitialized.
    constructor() {
        _disableInitializers();
    }

    /// @inheritdoc IPlugin
    function pluginType() public pure override returns (PluginType) {
        return PluginType.UUPS;
    }

    /// @notice The ID of the permission required to call the `_authorizeUpgrade` function.
    bytes32 public constant UPGRADE_PLUGIN_PERMISSION_ID = keccak256("UPGRADE_PLUGIN_PERMISSION");

    /// @notice Initializes the plugin by storing the associated DAO.
    /// @param _dao The DAO contract.
    function __PluginUUPSUpgradeable_init(IDAO _dao) internal virtual onlyInitializing {
        __DaoAuthorizableUpgradeable_init(_dao);
    }

    /// @notice Checks if an interface is supported by this or its parent contract.
    /// @param _interfaceId The ID of the interface.
    /// @return Returns `true` if the interface is supported.
    function supportsInterface(bytes4 _interfaceId) public view virtual override returns (bool) {
        return
            _interfaceId == type(IPlugin).interfaceId ||
            _interfaceId == type(IERC1822ProxiableUpgradeable).interfaceId ||
            super.supportsInterface(_interfaceId);
    }

    /// @notice Returns the address of the implementation contract in the [proxy storage slot](https://eips.ethereum.org/EIPS/eip-1967) slot the [UUPS proxy](https://eips.ethereum.org/EIPS/eip-1822) is pointing to.
    /// @return The address of the implementation contract.
    function implementation() public view returns (address) {
        return _getImplementation();
    }

    /// @notice Internal method authorizing the upgrade of the contract via the [upgradeabilty mechanism for UUPS proxies](https://docs.openzeppelin.com/contracts/4.x/api/proxy#UUPSUpgradeable) (see [ERC-1822](https://eips.ethereum.org/EIPS/eip-1822)).
    /// @dev The caller must have the `UPGRADE_PLUGIN_PERMISSION_ID` permission.
    function _authorizeUpgrade(
        address
    ) internal virtual override auth(UPGRADE_PLUGIN_PERMISSION_ID) {}

    /// @notice This empty reserved space is put in place to allow future versions to add new variables without shifting down storage in the inheritance chain (see [OpenZepplins guide about storage gaps](https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps)).
    uint256[50] private __gap;
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

import {IDAO} from "../../dao/IDAO.sol";

/// @title IProposal
/// @author Aragon Association - 2022-2023
/// @notice An interface to be implemented by DAO plugins that create and execute proposals.
interface IProposal {
    /// @notice Emitted when a proposal is created.
    /// @param proposalId The ID of the proposal.
    /// @param creator  The creator of the proposal.
    /// @param startDate The start date of the proposal in seconds.
    /// @param endDate The end date of the proposal in seconds.
    /// @param metadata The metadata of the proposal.
    /// @param actions The actions that will be executed if the proposal passes.
    /// @param allowFailureMap A bitmap allowing the proposal to succeed, even if individual actions might revert. If the bit at index `i` is 1, the proposal succeeds even if the `i`th action reverts. A failure map value of 0 requires every action to not revert.
    event ProposalCreated(
        uint256 indexed proposalId,
        address indexed creator,
        uint64 startDate,
        uint64 endDate,
        bytes metadata,
        IDAO.Action[] actions,
        uint256 allowFailureMap
    );

    /// @notice Emitted when a proposal is executed.
    /// @param proposalId The ID of the proposal.
    event ProposalExecuted(uint256 indexed proposalId);

    /// @notice Returns the proposal count determining the next proposal ID.
    /// @return The proposal count.
    function proposalCount() external view returns (uint256);
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

import {CountersUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/CountersUpgradeable.sol";
import {ERC165Upgradeable} from "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";

import "./IProposal.sol";

/// @title ProposalUgradeable
/// @author Aragon Association - 2022-2023
/// @notice An abstract contract containing the traits and internal functionality to create and execute proposals that can be inherited by upgradeable DAO plugins.
abstract contract ProposalUpgradeable is IProposal, ERC165Upgradeable {
    using CountersUpgradeable for CountersUpgradeable.Counter;

    /// @notice The incremental ID for proposals and executions.
    CountersUpgradeable.Counter private proposalCounter;

    /// @inheritdoc IProposal
    function proposalCount() public view override returns (uint256) {
        return proposalCounter.current();
    }

    /// @notice Checks if this or the parent contract supports an interface by its ID.
    /// @param _interfaceId The ID of the interface.
    /// @return Returns `true` if the interface is supported.
    function supportsInterface(bytes4 _interfaceId) public view virtual override returns (bool) {
        return _interfaceId == type(IProposal).interfaceId || super.supportsInterface(_interfaceId);
    }

    /// @notice Creates a proposal ID.
    /// @return proposalId The proposal ID.
    function _createProposalId() internal returns (uint256 proposalId) {
        proposalId = proposalCount();
        proposalCounter.increment();
    }

    /// @notice Internal function to create a proposal.
    /// @param _metadata The the proposal metadata.
    /// @param _startDate The start date of the proposal in seconds.
    /// @param _endDate The end date of the proposal in seconds.
    /// @param _allowFailureMap A bitmap allowing the proposal to succeed, even if individual actions might revert. If the bit at index `i` is 1, the proposal succeeds even if the `i`th action reverts. A failure map value of 0 requires every action to not revert.
    /// @param _actions The actions that will be executed after the proposal passes.
    /// @return proposalId The ID of the proposal.
    function _createProposal(
        address _creator,
        bytes calldata _metadata,
        uint64 _startDate,
        uint64 _endDate,
        IDAO.Action[] calldata _actions,
        uint256 _allowFailureMap
    ) internal virtual returns (uint256 proposalId) {
        proposalId = _createProposalId();

        emit ProposalCreated({
            proposalId: proposalId,
            creator: _creator,
            metadata: _metadata,
            startDate: _startDate,
            endDate: _endDate,
            actions: _actions,
            allowFailureMap: _allowFailureMap
        });
    }

    /// @notice Internal function to execute a proposal.
    /// @param _proposalId The ID of the proposal to be executed.
    /// @param _actions The array of actions to be executed.
    /// @param _allowFailureMap A bitmap allowing the proposal to succeed, even if individual actions might revert. If the bit at index `i` is 1, the proposal succeeds even if the `i`th action reverts. A failure map value of 0 requires every action to not revert.
    /// @return execResults The array with the results of the executed actions.
    /// @return failureMap The failure map encoding which actions have failed.
    function _executeProposal(
        IDAO _dao,
        uint256 _proposalId,
        IDAO.Action[] memory _actions,
        uint256 _allowFailureMap
    ) internal virtual returns (bytes[] memory execResults, uint256 failureMap) {
        (execResults, failureMap) = _dao.execute(bytes32(_proposalId), _actions, _allowFailureMap);
        emit ProposalExecuted({proposalId: _proposalId});
    }

    /// @notice This empty reserved space is put in place to allow future versions to add new variables without shifting down storage in the inheritance chain (see [OpenZepplins guide about storage gaps](https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps)).
    uint256[49] private __gap;
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

import {IDAO} from "../dao/IDAO.sol";

/// @notice Thrown if a call is unauthorized in the associated DAO.
/// @param dao The associated DAO.
/// @param where The context in which the authorization reverted.
/// @param who The address (EOA or contract) missing the permission.
/// @param permissionId The permission identifier.
error DaoUnauthorized(address dao, address where, address who, bytes32 permissionId);

/// @notice A free function checking if a caller is granted permissions on a target contract via a permission identifier that redirects the approval to a `PermissionCondition` if this was specified in the setup.
/// @param _where The address of the target contract for which `who` recieves permission.
/// @param _who The address (EOA or contract) owning the permission.
/// @param _permissionId The permission identifier.
/// @param _data The optional data passed to the `PermissionCondition` registered.
function _auth(
    IDAO _dao,
    address _where,
    address _who,
    bytes32 _permissionId,
    bytes calldata _data
) view {
    if (!_dao.hasPermission(_where, _who, _permissionId, _data))
        revert DaoUnauthorized({
            dao: address(_dao),
            where: _where,
            who: _who,
            permissionId: _permissionId
        });
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

import {IDAO} from "../../../core/dao/IDAO.sol";

/// @title IMajorityVoting
/// @author Aragon Association - 2022-2023
/// @notice The interface of majority voting plugin.
/// @dev This contract implements the `IMajorityVoting` interface.
interface IMajorityVoting {
    /// @notice Vote options that a voter can chose from.
    /// @param None The default option state of a voter indicating the absence of from the vote. This option neither influences support nor participation.
    /// @param Abstain This option does not influence the support but counts towards participation.
    /// @param Yes This option increases the support and counts towards participation.
    /// @param No This option decreases the support and counts towards participation.
    enum VoteOption {
        None,
        Abstain,
        Yes,
        No
    }

    /// @notice Emitted when a vote is cast by a voter.
    /// @param proposalId The ID of the proposal.
    /// @param voter The voter casting the vote.
    /// @param voteOption The casted vote option.
    /// @param votingPower The voting power behind this vote.
    event VoteCast(
        uint256 indexed proposalId,
        address indexed voter,
        VoteOption voteOption,
        uint256 votingPower
    );

    /// @notice Returns the support threshold parameter stored in the voting settings.
    /// @return The support threshold parameter.
    function supportThreshold() external view returns (uint32);

    /// @notice Returns the minimum participation parameter stored in the voting settings.
    /// @return The minimum participation parameter.
    function minParticipation() external view returns (uint32);

    /// @notice Checks if the support value defined as $$\texttt{support} = \frac{N_\text{yes}}{N_\text{yes}+N_\text{no}}$$ for a proposal vote is greater than the support threshold.
    /// @param _proposalId The ID of the proposal.
    /// @return Returns `true` if the  support is greater than the support threshold and `false` otherwise.
    function isSupportThresholdReached(uint256 _proposalId) external view returns (bool);

    /// @notice Checks if the worst-case support value defined as $$\texttt{worstCaseSupport} = \frac{N_\text{yes}}{ N_\text{total}-N_\text{abstain}}$$ for a proposal vote is greater than the support threshold.
    /// @param _proposalId The ID of the proposal.
    /// @return Returns `true` if the worst-case support is greater than the support threshold and `false` otherwise.
    function isSupportThresholdReachedEarly(uint256 _proposalId) external view returns (bool);

    /// @notice Checks if the participation value defined as $$\texttt{participation} = \frac{N_\text{yes}+N_\text{no}+N_\text{abstain}}{N_\text{total}}$$ for a proposal vote is greater or equal than the minimum participation value.
    /// @param _proposalId The ID of the proposal.
    /// @return Returns `true` if the participation is greater than the minimum particpation and `false` otherwise.
    function isMinParticipationReached(uint256 _proposalId) external view returns (bool);

    /// @notice Checks if an account can participate on a proposal vote. This can be because the vote
    /// - has not started,
    /// - has ended,
    /// - was executed, or
    /// - the voter doesn't have voting powers.
    /// @param _proposalId The proposal Id.
    /// @param _account The account address to be checked.
    /// @param  _voteOption Whether the voter abstains, supports or opposes the proposal.
    /// @return Returns true if the account is allowed to vote.
    /// @dev The function assumes the queried proposal exists.
    function canVote(
        uint256 _proposalId,
        address _account,
        VoteOption _voteOption
    ) external view returns (bool);

    /// @notice Checks if a proposal can be executed.
    /// @param _proposalId The ID of the proposal to be checked.
    /// @return True if the proposal can be executed, false otherwise.
    function canExecute(uint256 _proposalId) external view returns (bool);

    /// @notice Votes for a vote option and, optionally, executes the proposal.
    /// @dev `_voteOption`, 1 -> abstain, 2 -> yes, 3 -> no
    /// @param _proposalId The ID of the proposal.
    /// @param _voteOption The chosen vote option.
    /// @param _tryEarlyExecution If `true`,  early execution is tried after the vote cast. The call does not revert if early execution is not possible.
    function vote(uint256 _proposalId, VoteOption _voteOption, bool _tryEarlyExecution) external;

    /// @notice Executes a proposal.
    /// @param _proposalId The ID of the proposal to be executed.
    function execute(uint256 _proposalId) external;

    /// @notice Returns whether the account has voted for the proposal.  Note, that this does not check if the account has voting power.
    /// @param _proposalId The ID of the proposal.
    /// @param _account The account address to be checked.
    /// @return The vote option cast by a voter for a certain proposal.
    function getVoteOption(
        uint256 _proposalId,
        address _account
    ) external view returns (VoteOption);
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

import {ERC165Upgradeable} from "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";
import {Initializable} from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import {SafeCastUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/math/SafeCastUpgradeable.sol";

import {IProposal} from "../../../core/plugin/proposal/IProposal.sol";
import {ProposalUpgradeable} from "../../../core/plugin/proposal/ProposalUpgradeable.sol";
import {PluginUUPSUpgradeable} from "../../../core/plugin/PluginUUPSUpgradeable.sol";
import {IDAO} from "../../../core/dao/IDAO.sol";
import {RATIO_BASE, RatioOutOfBounds} from "../../utils/Ratio.sol";
import {IMajorityVoting} from "./IMajorityVoting.sol";

/// @title MajorityVotingBase
/// @author Aragon Association - 2022-2023

/// @notice The abstract implementation of majority voting plugins.
///
/// #### Parameterization
///
/// We define two parameters
/// $$\texttt{support} = \frac{N_\text{yes}}{N_\text{yes} + N_\text{no}} \in [0,1]$$
/// and
/// $$\texttt{participation} = \frac{N_\text{yes} + N_\text{no} + N_\text{abstain}}{N_\text{total}} \in [0,1],$$
/// where $N_\text{yes}$, $N_\text{no}$, and $N_\text{abstain}$ are the yes, no, and abstain votes that have been cast and $N_\text{total}$ is the total voting power available at /// proposal creation time.
///
/// ##### Limit Values: Support Threshold & Minimum Participation
///
/// Two limit values are associated with these parameters and decide if a proposal execution should be possible: $\texttt{supportThreshold} \in [0,1]$ and $\texttt{minParticipation} \in /// [0,1]$.
///
/// For threshold values, $>$ comparison is used. This **does not** include the threshold value. E.g., for $\texttt{supportThreshold} = 50\%$, the criterion is fulfilled if there is at /// least one more yes than no votes ($N_\text{yes} = N_\text{no} + 1 $).
/// For minimum values, $\ge$ comparison is used. This **does** include the minimum participation value. E.g., for $\texttt{minParticipation} = 40\%$ and $N_\text{total} = 10$, the /// criterion is fulfilled if 4 out of 10 votes were casted.
///
/// Majority voting implies that the support threshold is set with
/// $$\texttt{supportThreshold} \ge 50\% .$$
/// However, this is not enforced by the contract code and developers can make unsafe parameters and only the frontend will warn about bad parameter settings.
///
/// #### Execution Criteria
///
/// After the vote is closed, two criteria decide if the proposal passes.
///
/// ##### The Support Criterion
///
/// For a proposal to pass, the required ratio of yes and no votes must be met:
/// $$(1- \texttt{supportThreshold}) \cdot N_\text{yes} > \texttt{supportThreshold} \cdot N_\text{no}.$$
/// Note, that the inequality yields the simple majority voting condition for $\texttt{supportThreshold}=\frac{1}{2}$.
///
/// ##### The Participation Criterion
///
/// For a proposal to pass, the minimum voting power must have been cast:
/// $$N_\text{yes} + N_\text{no} + N_\text{abstain} \ge \texttt{minVotingPower},$$
/// where $\texttt{minVotingPower} = \texttt{minParticipation} \cdot N_\text{total}$.
///
/// #### Vote Replacement Execution
///
/// The contract allows votes to be replaced. Voters can vote multiple times and only the latest voteOption is tallied.
///
/// #### Early Execution
///
/// This contract allows a proposal to be executed early, iff the vote outcome cannot change anymore by more people voting. Accordingly, vote replacement and early execution are /// mutually exclusive options.
/// The outcome cannot change anymore iff the support threshold is met even if all remaining votes are no votes. We call this number the worst-case number of no votes and define it as
///
/// $$N_\text{no, worst-case} = N_\text{no, worst-case} + \texttt{remainingVotes}$$
///
/// where
///
/// $$\texttt{remainingVotes} = N_\text{total}-\underbrace{(N_\text{yes}+N_\text{no}+N_\text{abstain})}_{\text{turnout}}.$$
///
/// We can use this quantity to calculate the worst-case support that would be obtained if all remaining votes are casted with no:
///
/// $$
/// \begin{align*}
///   \texttt{worstCaseSupport}
///   &= \frac{N_\text{yes}}{N_\text{yes} + (N_\text{no, worst-case})} \\[3mm]
///   &= \frac{N_\text{yes}}{N_\text{yes} + (N_\text{no} + \texttt{remainingVotes})} \\[3mm]
///   &= \frac{N_\text{yes}}{N_\text{yes} +  N_\text{no} + N_\text{total} - (N_\text{yes} + N_\text{no} + N_\text{abstain})} \\[3mm]
///   &= \frac{N_\text{yes}}{N_\text{total} - N_\text{abstain}}
/// \end{align*}
/// $$
///
/// In analogy, we can modify [the support criterion](#the-support-criterion) from above to allow for early execution:
///
/// $$
/// \begin{align*}
///   (1 - \texttt{supportThreshold}) \cdot N_\text{yes}
///   &> \texttt{supportThreshold} \cdot  N_\text{no, worst-case} \\[3mm]
///   &> \texttt{supportThreshold} \cdot (N_\text{no} + \texttt{remainingVotes}) \\[3mm]
///   &> \texttt{supportThreshold} \cdot (N_\text{no} + N_\text{total}-(N_\text{yes}+N_\text{no}+N_\text{abstain})) \\[3mm]
///   &> \texttt{supportThreshold} \cdot (N_\text{total} - N_\text{yes} - N_\text{abstain})
/// \end{align*}
/// $$
///
/// Accordingly, early execution is possible when the vote is open, the modified support criterion, and the particicpation criterion are met.
/// @dev This contract implements the `IMajorityVoting` interface.
abstract contract MajorityVotingBase is
    IMajorityVoting,
    Initializable,
    ERC165Upgradeable,
    PluginUUPSUpgradeable,
    ProposalUpgradeable
{
    using SafeCastUpgradeable for uint256;

    /// @notice The different voting modes available.
    /// @param Standard In standard mode, early execution and vote replacement are disabled.
    /// @param EarlyExecution In early execution mode, a proposal can be executed early before the end date if the vote outcome cannot mathematically change by more voters voting.
    /// @param VoteReplacment In vote replacement mode, voters can change their vote multiple times and only the latest vote option is tallied.
    enum VotingMode {
        Standard,
        EarlyExecution,
        VoteReplacement
    }

    /// @notice A container for the majority voting settings that will be applied as parameters on proposal creation.
    /// @param votingMode A parameter to select the vote mode.
    /// @param supportThreshold The support threshold value. Its value has to be in the interval [0, 10^6] defined by `RATIO_BASE = 10**6`.
    /// @param minParticipation The minimum participation value. Its value has to be in the interval [0, 10^6] defined by `RATIO_BASE = 10**6`.
    /// @param minDuration The minimum duration of the proposal vote in seconds.
    /// @param minProposerVotingPower The minimum voting power required to create a proposal.
    struct VotingSettings {
        VotingMode votingMode;
        uint32 supportThreshold;
        uint32 minParticipation;
        uint64 minDuration;
        uint256 minProposerVotingPower;
    }

    /// @notice A container for proposal-related information.
    /// @param executed Whether the proposal is executed or not.
    /// @param parameters The proposal parameters at the time of the proposal creation.
    /// @param tally The vote tally of the proposal.
    /// @param voters The votes casted by the voters.
    /// @param actions The actions to be executed when the proposal passes.
    /// @param allowFailureMap A bitmap allowing the proposal to succeed, even if individual actions might revert. If the bit at index `i` is 1, the proposal succeeds even if the `i`th action reverts. A failure map value of 0 requires every action to not revert.
    struct Proposal {
        bool executed;
        ProposalParameters parameters;
        Tally tally;
        mapping(address => IMajorityVoting.VoteOption) voters;
        IDAO.Action[] actions;
        uint256 allowFailureMap;
    }

    /// @notice A container for the proposal parameters at the time of proposal creation.
    /// @param votingMode A parameter to select the vote mode.
    /// @param supportThreshold The support threshold value. The value has to be in the interval [0, 10^6] defined by `RATIO_BASE = 10**6`.
    /// @param startDate The start date of the proposal vote.
    /// @param endDate The end date of the proposal vote.
    /// @param snapshotBlock The number of the block prior to the proposal creation.
    /// @param minVotingPower The minimum voting power needed.
    struct ProposalParameters {
        VotingMode votingMode;
        uint32 supportThreshold;
        uint64 startDate;
        uint64 endDate;
        uint64 snapshotBlock;
        uint256 minVotingPower;
    }

    /// @notice A container for the proposal vote tally.
    /// @param abstain The number of abstain votes casted.
    /// @param yes The number of yes votes casted.
    /// @param no The number of no votes casted.
    struct Tally {
        uint256 abstain;
        uint256 yes;
        uint256 no;
    }

    /// @notice The [ERC-165](https://eips.ethereum.org/EIPS/eip-165) interface ID of the contract.
    bytes4 internal constant MAJORITY_VOTING_BASE_INTERFACE_ID =
        this.minDuration.selector ^
            this.minProposerVotingPower.selector ^
            this.votingMode.selector ^
            this.totalVotingPower.selector ^
            this.getProposal.selector ^
            this.updateVotingSettings.selector ^
            this.createProposal.selector;

    /// @notice The ID of the permission required to call the `updateVotingSettings` function.
    bytes32 public constant UPDATE_VOTING_SETTINGS_PERMISSION_ID =
        keccak256("UPDATE_VOTING_SETTINGS_PERMISSION");

    /// @notice A mapping between proposal IDs and proposal information.
    mapping(uint256 => Proposal) internal proposals;

    /// @notice The struct storing the voting settings.
    VotingSettings private votingSettings;

    /// @notice Thrown if a date is out of bounds.
    /// @param limit The limit value.
    /// @param actual The actual value.
    error DateOutOfBounds(uint64 limit, uint64 actual);

    /// @notice Thrown if the minimal duration value is out of bounds (less than one hour or greater than 1 year).
    /// @param limit The limit value.
    /// @param actual The actual value.
    error MinDurationOutOfBounds(uint64 limit, uint64 actual);

    /// @notice Thrown when a sender is not allowed to create a proposal.
    /// @param sender The sender address.
    error ProposalCreationForbidden(address sender);

    /// @notice Thrown if an account is not allowed to cast a vote. This can be because the vote
    /// - has not started,
    /// - has ended,
    /// - was executed, or
    /// - the account doesn't have voting powers.
    /// @param proposalId The ID of the proposal.
    /// @param account The address of the _account.
    /// @param voteOption The chosen vote option.
    error VoteCastForbidden(uint256 proposalId, address account, VoteOption voteOption);

    /// @notice Thrown if the proposal execution is forbidden.
    /// @param proposalId The ID of the proposal.
    error ProposalExecutionForbidden(uint256 proposalId);

    /// @notice Emitted when the voting settings are updated.
    /// @param votingMode A parameter to select the vote mode.
    /// @param supportThreshold The support threshold value.
    /// @param minParticipation The minimum participation value.
    /// @param minDuration The minimum duration of the proposal vote in seconds.
    /// @param minProposerVotingPower The minimum voting power required to create a proposal.
    event VotingSettingsUpdated(
        VotingMode votingMode,
        uint32 supportThreshold,
        uint32 minParticipation,
        uint64 minDuration,
        uint256 minProposerVotingPower
    );

    /// @notice Initializes the component to be used by inheriting contracts.
    /// @dev This method is required to support [ERC-1822](https://eips.ethereum.org/EIPS/eip-1822).
    /// @param _dao The IDAO interface of the associated DAO.
    /// @param _votingSettings The voting settings.
    function __MajorityVotingBase_init(
        IDAO _dao,
        VotingSettings calldata _votingSettings
    ) internal onlyInitializing {
        __PluginUUPSUpgradeable_init(_dao);
        _updateVotingSettings(_votingSettings);
    }

    /// @notice Checks if this or the parent contract supports an interface by its ID.
    /// @param _interfaceId The ID of the interface.
    /// @return Returns `true` if the interface is supported.
    function supportsInterface(
        bytes4 _interfaceId
    )
        public
        view
        virtual
        override(ERC165Upgradeable, PluginUUPSUpgradeable, ProposalUpgradeable)
        returns (bool)
    {
        return
            _interfaceId == MAJORITY_VOTING_BASE_INTERFACE_ID ||
            _interfaceId == type(IMajorityVoting).interfaceId ||
            super.supportsInterface(_interfaceId);
    }

    /// @inheritdoc IMajorityVoting
    function vote(
        uint256 _proposalId,
        VoteOption _voteOption,
        bool _tryEarlyExecution
    ) public virtual {
        address account = _msgSender();

        if (!_canVote(_proposalId, account, _voteOption)) {
            revert VoteCastForbidden({
                proposalId: _proposalId,
                account: account,
                voteOption: _voteOption
            });
        }
        _vote(_proposalId, _voteOption, account, _tryEarlyExecution);
    }

    /// @inheritdoc IMajorityVoting
    function execute(uint256 _proposalId) public virtual {
        if (!_canExecute(_proposalId)) {
            revert ProposalExecutionForbidden(_proposalId);
        }
        _execute(_proposalId);
    }

    /// @inheritdoc IMajorityVoting
    function getVoteOption(
        uint256 _proposalId,
        address _voter
    ) public view virtual returns (VoteOption) {
        return proposals[_proposalId].voters[_voter];
    }

    /// @inheritdoc IMajorityVoting
    function canVote(
        uint256 _proposalId,
        address _voter,
        VoteOption _voteOption
    ) public view virtual returns (bool) {
        return _canVote(_proposalId, _voter, _voteOption);
    }

    /// @inheritdoc IMajorityVoting
    function canExecute(uint256 _proposalId) public view virtual returns (bool) {
        return _canExecute(_proposalId);
    }

    /// @inheritdoc IMajorityVoting
    function isSupportThresholdReached(uint256 _proposalId) public view virtual returns (bool) {
        Proposal storage proposal_ = proposals[_proposalId];

        // The code below implements the formula of the support criterion explained in the top of this file.
        // `(1 - supportThreshold) * N_yes > supportThreshold *  N_no`
        return
            (RATIO_BASE - proposal_.parameters.supportThreshold) * proposal_.tally.yes >
            proposal_.parameters.supportThreshold * proposal_.tally.no;
    }

    /// @inheritdoc IMajorityVoting
    function isSupportThresholdReachedEarly(
        uint256 _proposalId
    ) public view virtual returns (bool) {
        Proposal storage proposal_ = proposals[_proposalId];

        uint256 noVotesWorstCase = totalVotingPower(proposal_.parameters.snapshotBlock) -
            proposal_.tally.yes -
            proposal_.tally.abstain;

        // The code below implements the formula of the early execution support criterion explained in the top of this file.
        // `(1 - supportThreshold) * N_yes > supportThreshold *  N_no,worst-case`
        return
            (RATIO_BASE - proposal_.parameters.supportThreshold) * proposal_.tally.yes >
            proposal_.parameters.supportThreshold * noVotesWorstCase;
    }

    /// @inheritdoc IMajorityVoting
    function isMinParticipationReached(uint256 _proposalId) public view virtual returns (bool) {
        Proposal storage proposal_ = proposals[_proposalId];

        // The code below implements the formula of the participation criterion explained in the top of this file.
        // `N_yes + N_no + N_abstain >= minVotingPower = minParticipation * N_total`
        return
            proposal_.tally.yes + proposal_.tally.no + proposal_.tally.abstain >=
            proposal_.parameters.minVotingPower;
    }

    /// @inheritdoc IMajorityVoting
    function supportThreshold() public view virtual returns (uint32) {
        return votingSettings.supportThreshold;
    }

    /// @inheritdoc IMajorityVoting
    function minParticipation() public view virtual returns (uint32) {
        return votingSettings.minParticipation;
    }

    /// @notice Returns the minimum duration parameter stored in the voting settings.
    /// @return The minimum duration parameter.
    function minDuration() public view virtual returns (uint64) {
        return votingSettings.minDuration;
    }

    /// @notice Returns the minimum voting power required to create a proposa stored in the voting settings.
    /// @return The minimum voting power required to create a proposal.
    function minProposerVotingPower() public view virtual returns (uint256) {
        return votingSettings.minProposerVotingPower;
    }

    /// @notice Returns the vote mode stored in the voting settings.
    /// @return The vote mode parameter.
    function votingMode() public view virtual returns (VotingMode) {
        return votingSettings.votingMode;
    }

    /// @notice Returns the total voting power checkpointed for a specific block number.
    /// @param _blockNumber The block number.
    /// @return The total voting power.
    function totalVotingPower(uint256 _blockNumber) public view virtual returns (uint256);

    /// @notice Returns all information for a proposal vote by its ID.
    /// @param _proposalId The ID of the proposal.
    /// @return open Whether the proposal is open or not.
    /// @return executed Whether the proposal is executed or not.
    /// @return parameters The parameters of the proposal vote.
    /// @return tally The current tally of the proposal vote.
    /// @return actions The actions to be executed in the associated DAO after the proposal has passed.
    /// @return allowFailureMap The bit map representations of which actions are allowed to revert so tx still succeeds.
    function getProposal(
        uint256 _proposalId
    )
        public
        view
        virtual
        returns (
            bool open,
            bool executed,
            ProposalParameters memory parameters,
            Tally memory tally,
            IDAO.Action[] memory actions,
            uint256 allowFailureMap
        )
    {
        Proposal storage proposal_ = proposals[_proposalId];

        open = _isProposalOpen(proposal_);
        executed = proposal_.executed;
        parameters = proposal_.parameters;
        tally = proposal_.tally;
        actions = proposal_.actions;
        allowFailureMap = proposal_.allowFailureMap;
    }

    /// @notice Updates the voting settings.
    /// @param _votingSettings The new voting settings.
    function updateVotingSettings(
        VotingSettings calldata _votingSettings
    ) external virtual auth(UPDATE_VOTING_SETTINGS_PERMISSION_ID) {
        _updateVotingSettings(_votingSettings);
    }

    /// @notice Creates a new majority voting proposal.
    /// @param _metadata The metadata of the proposal.
    /// @param _actions The actions that will be executed after the proposal passes.
    /// @param _allowFailureMap Allows proposal to succeed even if an action reverts. Uses bitmap representation. If the bit at index `x` is 1, the tx succeeds even if the action at `x` failed. Passing 0 will be treated as atomic execution.
    /// @param _startDate The start date of the proposal vote. If 0, the current timestamp is used and the vote starts immediately.
    /// @param _endDate The end date of the proposal vote. If 0, `_startDate + minDuration` is used.
    /// @param _voteOption The chosen vote option to be casted on proposal creation.
    /// @param _tryEarlyExecution If `true`,  early execution is tried after the vote cast. The call does not revert if early execution is not possible.
    /// @return proposalId The ID of the proposal.
    function createProposal(
        bytes calldata _metadata,
        IDAO.Action[] calldata _actions,
        uint256 _allowFailureMap,
        uint64 _startDate,
        uint64 _endDate,
        VoteOption _voteOption,
        bool _tryEarlyExecution
    ) external virtual returns (uint256 proposalId);

    /// @notice Internal function to cast a vote. It assumes the queried vote exists.
    /// @param _proposalId The ID of the proposal.
    /// @param _voteOption The chosen vote option to be casted on the proposal vote.
    /// @param _tryEarlyExecution If `true`,  early execution is tried after the vote cast. The call does not revert if early execution is not possible.
    function _vote(
        uint256 _proposalId,
        VoteOption _voteOption,
        address _voter,
        bool _tryEarlyExecution
    ) internal virtual;

    /// @notice Internal function to execute a vote. It assumes the queried proposal exists.
    /// @param _proposalId The ID of the proposal.
    function _execute(uint256 _proposalId) internal virtual {
        proposals[_proposalId].executed = true;

        _executeProposal(
            dao(),
            _proposalId,
            proposals[_proposalId].actions,
            proposals[_proposalId].allowFailureMap
        );
    }

    /// @notice Internal function to check if a voter can vote. It assumes the queried proposal exists.
    /// @param _proposalId The ID of the proposal.
    /// @param _voter The address of the voter to check.
    /// @param  _voteOption Whether the voter abstains, supports or opposes the proposal.
    /// @return Returns `true` if the given voter can vote on a certain proposal and `false` otherwise.
    function _canVote(
        uint256 _proposalId,
        address _voter,
        VoteOption _voteOption
    ) internal view virtual returns (bool);

    /// @notice Internal function to check if a proposal can be executed. It assumes the queried proposal exists.
    /// @param _proposalId The ID of the proposal.
    /// @return True if the proposal can be executed, false otherwise.
    /// @dev Threshold and minimal values are compared with `>` and `>=` comparators, respectively.
    function _canExecute(uint256 _proposalId) internal view virtual returns (bool) {
        Proposal storage proposal_ = proposals[_proposalId];

        // Verify that the vote has not been executed already.
        if (proposal_.executed) {
            return false;
        }

        if (_isProposalOpen(proposal_)) {
            // Early execution
            if (proposal_.parameters.votingMode != VotingMode.EarlyExecution) {
                return false;
            }
            if (!isSupportThresholdReachedEarly(_proposalId)) {
                return false;
            }
        } else {
            // Normal execution
            if (!isSupportThresholdReached(_proposalId)) {
                return false;
            }
        }
        if (!isMinParticipationReached(_proposalId)) {
            return false;
        }

        return true;
    }

    /// @notice Internal function to check if a proposal vote is still open.
    /// @param proposal_ The proposal struct.
    /// @return True if the proposal vote is open, false otherwise.
    function _isProposalOpen(Proposal storage proposal_) internal view virtual returns (bool) {
        uint64 currentTime = block.timestamp.toUint64();

        return
            proposal_.parameters.startDate <= currentTime &&
            currentTime < proposal_.parameters.endDate &&
            !proposal_.executed;
    }

    /// @notice Internal function to update the plugin-wide proposal vote settings.
    /// @param _votingSettings The voting settings to be validated and updated.
    function _updateVotingSettings(VotingSettings calldata _votingSettings) internal virtual {
        // Require the support threshold value to be in the interval [0, 10^6-1], because `>` comparision is used in the support criterion and >100% could never be reached.
        if (_votingSettings.supportThreshold > RATIO_BASE - 1) {
            revert RatioOutOfBounds({
                limit: RATIO_BASE - 1,
                actual: _votingSettings.supportThreshold
            });
        }

        // Require the minimum participation value to be in the interval [0, 10^6], because `>=` comparision is used in the participation criterion.
        if (_votingSettings.minParticipation > RATIO_BASE) {
            revert RatioOutOfBounds({limit: RATIO_BASE, actual: _votingSettings.minParticipation});
        }

        if (_votingSettings.minDuration < 60 minutes) {
            revert MinDurationOutOfBounds({limit: 60 minutes, actual: _votingSettings.minDuration});
        }

        if (_votingSettings.minDuration > 365 days) {
            revert MinDurationOutOfBounds({limit: 365 days, actual: _votingSettings.minDuration});
        }

        votingSettings = _votingSettings;

        emit VotingSettingsUpdated({
            votingMode: _votingSettings.votingMode,
            supportThreshold: _votingSettings.supportThreshold,
            minParticipation: _votingSettings.minParticipation,
            minDuration: _votingSettings.minDuration,
            minProposerVotingPower: _votingSettings.minProposerVotingPower
        });
    }

    /// @notice Validates and returns the proposal vote dates.
    /// @param _start The start date of the proposal vote. If 0, the current timestamp is used and the vote starts immediately.
    /// @param _end The end date of the proposal vote. If 0, `_start + minDuration` is used.
    /// @return startDate The validated start date of the proposal vote.
    /// @return endDate The validated end date of the proposal vote.
    function _validateProposalDates(
        uint64 _start,
        uint64 _end
    ) internal view virtual returns (uint64 startDate, uint64 endDate) {
        uint64 currentTimestamp = block.timestamp.toUint64();

        if (_start == 0) {
            startDate = currentTimestamp;
        } else {
            startDate = _start;

            if (startDate < currentTimestamp) {
                revert DateOutOfBounds({limit: currentTimestamp, actual: startDate});
            }
        }

        uint64 earliestEndDate = startDate + votingSettings.minDuration; // Since `minDuration` is limited to 1 year, `startDate + minDuration` can only overflow if the `startDate` is after `type(uint64).max - minDuration`. In this case, the proposal creation will revert and another date can be picked.

        if (_end == 0) {
            endDate = earliestEndDate;
        } else {
            endDate = _end;

            if (endDate < earliestEndDate) {
                revert DateOutOfBounds({limit: earliestEndDate, actual: endDate});
            }
        }
    }

    /// @notice This empty reserved space is put in place to allow future versions to add new variables without shifting down storage in the inheritance chain (see [OpenZepplins guide about storage gaps](https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps)).
    uint256[47] private __gap;
}

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity 0.8.17;

// The base value to encode real-valued ratios on the interval `[0,1]` as integers on the interval `[0, 10**6]`.
uint256 constant RATIO_BASE = 10 ** 6;

/// @notice Thrown if a ratio value exceeds the maximal value of `10**6`.
/// @param limit The maximal value.
/// @param actual The actual value.
error RatioOutOfBounds(uint256 limit, uint256 actual);

/// @notice Applies a ratio to a value and ceils the remainder.
/// @param _value The value to which the ratio is applied.
/// @param _ratio The ratio that must be in the interval `[0, 10**6]`.
/// @return result The resulting value.
function _applyRatioCeiled(uint256 _value, uint256 _ratio) pure returns (uint256 result) {
    if (_ratio > RATIO_BASE) {
        revert RatioOutOfBounds({limit: RATIO_BASE, actual: _ratio});
    }

    _value = _value * _ratio;
    uint256 remainder = _value % RATIO_BASE;
    result = _value / RATIO_BASE;

    // Check if ceiling is needed
    if (remainder != 0) {
        ++result;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 2000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

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