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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.24;

import "@openzeppelin/contracts-upgradeable/access/Ownable2StepUpgradeable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./interfaces/IReceiveApproval.sol";

contract Portal is Ownable2StepUpgradeable, IReceiveApproval {
    using SafeERC20 for IERC20;

    /// @notice Supported token ability defines what can be done with
    ///         a given token. Some tokens can be deposited but can not be locked.
    enum TokenAbility {
        None,
        Deposit,
        DepositAndLock
    }

    /// @notice Supported token struct to pair a token address with its ability
    /// @dev This an auxiliary struct is used to initialize the contract with
    ///      the supported tokens and for governance to add new supported tokens.
    struct SupportedToken {
        address token;
        TokenAbility tokenAbility;
    }

    /// @notice DepositInfo keeps track of the deposit balance and unlock time.
    ///         Each deposit is tracked separately and associated with a specific
    ///         token. Some tokens can be deposited but can not be locked - in
    ///         that case the unlockAt is the block timestamp of when the deposit
    ///         was created. The same is true for tokens that can be locked but
    ///         the depositor decided not to lock them.
    struct DepositInfo {
        uint96 balance;
        uint32 unlockAt;
    }

    /// @notice Mapping of the details of all the deposited funds:
    ///         depositor address -> token address -> deposit id -> DepositInfo
    mapping(address => mapping(address => mapping(uint256 => DepositInfo)))
        public deposits;

    /// @notice The number of deposits created. Includes the deposits that
    //          were fully withdrawn. This is also the identifier of the next
    //          deposit to be created.
    uint256 public depositCount;

    /// @notice List of tokens enabled for deposit or for deposit and lock.
    mapping(address => TokenAbility) public tokenAbility;

    /// @notice Minimum time a deposit can be locked.
    uint32 public minLockPeriod;

    /// @notice Maximum time a deposit can be locked.
    uint32 public maxLockPeriod;

    event Deposited(
        address indexed depositor,
        address indexed token,
        uint256 indexed depositId,
        uint256 amount
    );

    event Withdrawn(
        address indexed depositor,
        address indexed token,
        uint256 indexed depositId,
        uint256 amount
    );

    event Locked(
        address indexed depositor,
        address indexed token,
        uint256 indexed depositId,
        uint32 unlockAt,
        uint32 lockPeriod
    );

    event SupportedTokenAdded(address indexed token, TokenAbility tokenAbility);

    event MaxLockPeriodUpdated(uint32 maxLockPeriod);

    event MinLockPeriodUpdated(uint32 minLockPeriod);

    error IncorrectTokenAddress(address token);

    error IncorrectTokenAbility(TokenAbility ability);

    error IncorrectDepositor(address depositor);

    error IncorrectAmount(uint256 amount);

    error InsufficientDepositAmount(uint256 amount, uint256 depositBalance);

    error TokenNotSupported(address token);

    error TokenAlreadySupported(address token, TokenAbility tokenAbility);

    error InsufficientTokenAbility(address token, TokenAbility tokenAbility);

    error LockPeriodOutOfRange(uint32 lockPeriod);

    error IncorrectLockPeriod(uint256 lockPeriod);

    error LockPeriodTooShort(
        uint32 lockPeriod,
        uint32 newUnlockAt,
        uint32 existingUnlockAt
    );

    error DepositLocked(uint32 unlockAt);

    error DepositNotFound();

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

    /// @notice Initialize the contract with the supported tokens and their
    ///         abilities.
    /// @dev We are using OpenZeppelin's initializer pattern to initialize
    ///      the contract. This function is called only once during the contract
    ///      deployment.
    /// @param supportedTokens List of supported tokens and their abilities
    function initialize(
        SupportedToken[] memory supportedTokens
    ) external initializer {
        __Ownable_init(msg.sender);

        minLockPeriod = 4 weeks;
        maxLockPeriod = 39 weeks;
        depositCount = 0;

        for (uint256 i = 0; i < supportedTokens.length; i++) {
            address token = supportedTokens[i].token;
            TokenAbility ability = supportedTokens[i].tokenAbility;

            if (token == address(0)) {
                revert IncorrectTokenAddress(token);
            }

            tokenAbility[token] = ability;
        }
    }

    /// @notice Add a new supported token and define its ability.
    /// @dev Only the owner can add a new supported token.
    /// @param supportedToken Supported token and its ability
    function addSupportedToken(
        SupportedToken calldata supportedToken
    ) external onlyOwner {
        address token = supportedToken.token;
        TokenAbility ability = supportedToken.tokenAbility;

        if (token == address(0)) {
            revert IncorrectTokenAddress(token);
        }

        if (ability == TokenAbility.None) {
            revert IncorrectTokenAbility(ability);
        }

        if (tokenAbility[token] != TokenAbility.None) {
            revert TokenAlreadySupported(token, tokenAbility[token]);
        }

        tokenAbility[token] = ability;

        emit SupportedTokenAdded(token, ability);
    }

    /// @notice Set the minimum lock period for deposits.
    /// @dev Only the owner can update the minimum lock period. The new value
    ///      must be normalized to weeks, non-zero, and not higher than the
    ///      maximum lock period.
    /// @param _minLockPeriod new minimum lock period
    function setMinLockPeriod(uint32 _minLockPeriod) external onlyOwner {
        uint32 normalizedLockPeriod = _normalizeLockPeriod(_minLockPeriod);

        if (
            _minLockPeriod != normalizedLockPeriod ||
            normalizedLockPeriod == 0 ||
            _minLockPeriod > maxLockPeriod
        ) {
            revert IncorrectLockPeriod(_minLockPeriod);
        }

        minLockPeriod = _minLockPeriod;
        emit MinLockPeriodUpdated(_minLockPeriod);
    }

    /// @notice Set the maximum lock period for deposits. Maximum lock
    ///      period is used as a limit to prevent users from accidentally
    ///      locking their deposits for too long.
    /// @dev Only the owner can update the maximum lock period. The new value
    ///      must be normalized to weeks and not lower than the minimum lock
    ///      period.
    /// @param _maxLockPeriod new maximum lock period
    function setMaxLockPeriod(uint32 _maxLockPeriod) external onlyOwner {
        if (
            _maxLockPeriod != _normalizeLockPeriod(_maxLockPeriod) ||
            _maxLockPeriod < minLockPeriod
        ) {
            revert IncorrectLockPeriod(_maxLockPeriod);
        }

        maxLockPeriod = _maxLockPeriod;
        emit MaxLockPeriodUpdated(_maxLockPeriod);
    }

    /// @notice Get the balance and unlock time of a given deposit.
    /// @param depositor depositor address
    /// @param token token address to get the balance
    /// @param depositId id of the deposit
    function getDeposit(
        address depositor,
        address token,
        uint256 depositId
    ) external view returns (DepositInfo memory) {
        return deposits[depositor][token][depositId];
    }

    /// @notice Withdraw deposited tokens.
    ///         Deposited lockable tokens can be withdrawn at any time if
    ///         there is no lock set on the deposit or the lock period has passed.
    ///         There is no way to withdraw locked deposit. Tokens that are not
    ///         lockable can be withdrawn at any time. Deposit can be withdrawn
    ///         partially.
    /// @param token deposited token address
    /// @param depositId id of the deposit
    /// @param amount amount of the token to be withdrawn from the deposit
    function withdraw(
        address token,
        uint256 depositId,
        uint96 amount
    ) external {
        TokenAbility ability = tokenAbility[token];

        if (amount == 0) {
            revert IncorrectAmount(amount);
        }

        if (ability == TokenAbility.None) {
            revert TokenNotSupported(token);
        }

        DepositInfo memory selectedDeposit = deposits[msg.sender][token][
            depositId
        ];

        if (
            ability == TokenAbility.DepositAndLock &&
            // solhint-disable-next-line not-rely-on-time
            block.timestamp < selectedDeposit.unlockAt
        ) {
            revert DepositLocked(selectedDeposit.unlockAt);
        }

        uint96 depositedAmount = selectedDeposit.balance;

        if (depositedAmount == 0) {
            revert DepositNotFound();
        }

        if (amount > depositedAmount) {
            revert InsufficientDepositAmount(amount, depositedAmount);
        }

        emit Withdrawn(msg.sender, token, depositId, amount);

        if (amount == depositedAmount) {
            delete deposits[msg.sender][token][depositId];
        } else {
            deposits[msg.sender][token][depositId].balance =
                depositedAmount -
                amount;
        }

        IERC20(token).safeTransfer(msg.sender, amount);
    }

    /// @notice Receive approval from a token contract and deposit the tokens in
    ///         one transaction. If the the token is lockable and lock period is
    ///         greater than 0, the deposit will be locked for the given period.
    /// @dev This function is called by the token following the `approveAndCall`
    ///      pattern.
    //       Encoded lock period is counted in seconds, will be normalized to
    ///      weeks. If non-zero, it must not be shorter than the minimum lock
    ///      period and must not be longer than the maximum lock period. To not
    ///      lock the deposit, the lock period must be 0.
    /// @param from address which approved and sent the tokens
    /// @param amount amount of tokens sent
    /// @param token address of the token contract
    /// @param data encoded lock period
    function receiveApproval(
        address from,
        uint256 amount,
        address token,
        bytes calldata data
    ) external override {
        if (token != msg.sender) {
            revert IncorrectTokenAddress(token);
        }
        if (amount > type(uint96).max) {
            revert IncorrectAmount(amount);
        }

        uint32 lockPeriod = abi.decode(data, (uint32));

        _depositFor(from, from, token, uint96(amount), lockPeriod);
    }

    /// @notice Deposit and optionally lock tokens for the given period.
    /// @dev Lock period will be normalized to weeks. If non-zero, it must not
    ///      be shorter than the minimum lock period and must not be longer than
    ///      the maximum lock period.
    /// @param token token address to deposit
    /// @param amount amount of tokens to deposit
    /// @param lockPeriod lock period in seconds, 0 to not lock the deposit
    function deposit(address token, uint96 amount, uint32 lockPeriod) external {
        _depositFor(msg.sender, msg.sender, token, amount, lockPeriod);
    }

    /// @notice Deposit and optionally lock tokens to the contract on behalf of
    ///         someone else.
    /// @dev Lock period will be normalized to weeks. If non-zero, it must not
    ///      be shorter than the minimum lock period and must not be longer than
    ///      the maximum lock period.
    /// @param depositOwner address that will be able to withdraw the deposit
    /// @param token token address to deposit
    /// @param amount amount of tokens to deposit
    /// @param lockPeriod lock period in seconds, 0 to not lock the deposit
    function depositFor(
        address depositOwner,
        address token,
        uint96 amount,
        uint32 lockPeriod
    ) external {
        _depositFor(depositOwner, msg.sender, token, amount, lockPeriod);
    }

    /// @notice Lock existing deposit for a given period. This function can be
    ///         used to lock a deposit that was not locked when it was created or
    ///         to extend the lock period of an already locked deposit.
    /// @param token address of the deposited token
    /// @param depositId id of the deposit
    /// @param lockPeriod new lock period in seconds
    function lock(
        address token,
        uint256 depositId,
        uint32 lockPeriod
    ) external {
        DepositInfo storage depositInfo = deposits[msg.sender][token][
            depositId
        ];

        if (depositInfo.balance == 0) {
            revert DepositNotFound();
        }

        TokenAbility ability = tokenAbility[token];
        if (ability != TokenAbility.DepositAndLock) {
            revert InsufficientTokenAbility(token, ability);
        }

        uint32 existingUnlockAt = depositInfo.unlockAt;
        uint32 newUnlockAt = _calculateUnlockTime(
            msg.sender,
            token,
            depositId,
            lockPeriod
        );
        if (newUnlockAt <= existingUnlockAt) {
            revert LockPeriodTooShort(
                lockPeriod,
                newUnlockAt,
                existingUnlockAt
            );
        }

        depositInfo.unlockAt = newUnlockAt;
    }

    /// @notice Internal deposit function to deposit tokens on behalf of a given
    ///         address - sender or someone else. If the lock period passed as
    ///         a parameter is non-zero, the function will lock the deposit.
    /// @param depositOwner address that will be able to withdraw the deposit
    /// @param token token address to deposit
    /// @param amount amount of tokens to deposit
    /// @param lockPeriod lock period in seconds, 0 to not lock the deposit
    function _depositFor(
        address depositOwner,
        address depositFunder,
        address token,
        uint96 amount,
        uint32 lockPeriod
    ) internal {
        TokenAbility ability = tokenAbility[token];
        if (ability == TokenAbility.None) {
            revert TokenNotSupported(token);
        }
        if (lockPeriod > 0 && ability == TokenAbility.Deposit) {
            revert InsufficientTokenAbility(token, ability);
        }

        if (depositOwner == address(0)) {
            revert IncorrectDepositor(depositOwner);
        }

        if (amount == 0) {
            revert IncorrectAmount(amount);
        }

        depositCount++;

        uint256 depositId = depositCount;

        emit Deposited(depositOwner, token, depositId, amount);

        deposits[depositOwner][token][depositId] = DepositInfo({
            balance: amount,
            // solhint-disable-next-line not-rely-on-time
            unlockAt: _calculateUnlockTime(
                depositOwner,
                token,
                depositId,
                lockPeriod
            )
        });

        IERC20(token).safeTransferFrom(depositFunder, address(this), amount);
    }

    /// @notice Calculates the unlock time normalizing the lock time value and
    ///         making sure it is in the allowed range. Returns the timestamp at
    ///         which the deposit can be unlocked.
    /// @dev This function DOES NOT check if the deposit exists and if the
    ///      existing deposit already has a lock time. Please validate it before
    ///      calling this function.
    /// @param depositor depositor address
    /// @param token token of the deposit that will be locked
    /// @param depositId id of the deposit that will be locked
    /// @param lockPeriod lock period in seconds
    function _calculateUnlockTime(
        address depositor,
        address token,
        uint depositId,
        uint32 lockPeriod
    ) internal returns (uint32) {
        // Short-circuit if there is no intention to lock. There is no need to
        // check the minimum/maximum lock time or normalize the lock period.
        if (lockPeriod == 0) {
            // solhint-disable-next-line not-rely-on-time
            return uint32(block.timestamp);
        }

        uint32 normalizedLockPeriod = _normalizeLockPeriod(lockPeriod);

        if (
            normalizedLockPeriod == 0 ||
            normalizedLockPeriod < minLockPeriod ||
            normalizedLockPeriod > maxLockPeriod
        ) {
            revert LockPeriodOutOfRange(lockPeriod);
        }

        // solhint-disable-next-line not-rely-on-time
        uint32 unlockAt = uint32(block.timestamp) + normalizedLockPeriod;

        // It is gas-cheaper to pass the required parameters and emit the event
        // here instead of checking the result and emit the event in the calling
        // function. Keep in mind internal functions are inlined.
        emit Locked(
            depositor,
            token,
            depositId,
            unlockAt,
            normalizedLockPeriod
        );

        return unlockAt;
    }

    /// @notice Normalizes the lock period to weeks. Will round down if not
    ///         normalized.
    /// @param lockPeriod the lock period to be normalized
    function _normalizeLockPeriod(
        uint32 lockPeriod
    ) internal pure returns (uint32) {
        // slither-disable-next-line divide-before-multiply
        return (lockPeriod / 1 weeks) * 1 weeks;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.20;

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

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is specified at deployment time in the constructor for `Ownable`. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2StepUpgradeable is Initializable, OwnableUpgradeable {
    /// @custom:storage-location erc7201:openzeppelin.storage.Ownable2Step
    struct Ownable2StepStorage {
        address _pendingOwner;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable2Step")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant Ownable2StepStorageLocation = 0x237e158222e3e6968b72b9db0d8043aacf074ad9f650f0d1606b4d82ee432c00;

    function _getOwnable2StepStorage() private pure returns (Ownable2StepStorage storage $) {
        assembly {
            $.slot := Ownable2StepStorageLocation
        }
    }

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

    function __Ownable2Step_init() internal onlyInitializing {
    }

    function __Ownable2Step_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Returns the address of the pending owner.
     */
    function pendingOwner() public view virtual returns (address) {
        Ownable2StepStorage storage $ = _getOwnable2StepStorage();
        return $._pendingOwner;
    }

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        Ownable2StepStorage storage $ = _getOwnable2StepStorage();
        $._pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        Ownable2StepStorage storage $ = _getOwnable2StepStorage();
        delete $._pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        if (pendingOwner() != sender) {
            revert OwnableUnauthorizedAccount(sender);
        }
        _transferOwnership(sender);
    }
}

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

pragma solidity ^0.8.20;

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

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    /// @custom:storage-location erc7201:openzeppelin.storage.Ownable
    struct OwnableStorage {
        address _owner;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300;

    function _getOwnableStorage() private pure returns (OwnableStorage storage $) {
        assembly {
            $.slot := OwnableStorageLocation
        }
    }

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    function __Ownable_init(address initialOwner) internal onlyInitializing {
        __Ownable_init_unchained(initialOwner);
    }

    function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

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

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

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

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

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

pragma solidity ^0.8.20;

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

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

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../utils/Address.sol";

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

    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

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

        bytes memory returndata = address(token).functionCall(data);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
    }
}

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.24;

/// @notice An interface that should be implemented by contracts supporting
///         `approveAndCall`/`receiveApproval` pattern.
interface IReceiveApproval {
    /// @notice Receives approval to spend tokens. Called as a result of
    ///         `approveAndCall` call on the token.
    function receiveApproval(
        address from,
        uint256 amount,
        address token,
        bytes calldata extraData
    ) external;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[{"internalType":"uint32","name":"unlockAt","type":"uint32"}],"name":"DepositLocked","type":"error"},{"inputs":[],"name":"DepositNotFound","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"IncorrectAmount","type":"error"},{"inputs":[{"internalType":"address","name":"depositor","type":"address"}],"name":"IncorrectDepositor","type":"error"},{"inputs":[{"internalType":"uint256","name":"lockPeriod","type":"uint256"}],"name":"IncorrectLockPeriod","type":"error"},{"inputs":[{"internalType":"enum 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