{
  "language": "Solidity",
  "sources": {
    "contracts/TokenVesting.sol": {
      "content": "// contracts/TokenVesting.sol\n// SPDX-License-Identifier: Apache-2.0\npragma solidity 0.8.9;\n\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport \"@openzeppelin/contracts/security/ReentrancyGuard.sol\";\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/utils/math/Math.sol\";\nimport \"@openzeppelin/contracts/utils/math/SafeMath.sol\";\n\n/* \n    @author:        0xfd3495\n    @www:           cyclechain.io\n*/\n\ncontract TokenVesting is Ownable, ReentrancyGuard{\n    event CreatedVestingSchedule(uint256 indexed index);\n\n    using SafeMath for uint256;\n    using SafeERC20 for IERC20;\n    struct VestingSchedule{\n        bool initialized;\n        // TGE Unlock\n        uint256  tgeUnlock; \n        // beneficiary of tokens after they are released\n        address  beneficiary;\n        // cliff period in seconds\n        uint256  cliff;\n        // start time of the vesting period\n        uint256  start;\n        // duration of the vesting period in seconds\n        uint256  duration;\n        // duration of a slice period for the vesting in seconds\n        uint256 slicePeriodSeconds;\n        // whether or not the vesting is revocable\n        bool  revocable;\n        // total amount of tokens to be released at the end of the vesting\n        uint256 amountTotal;\n        // amount of tokens released\n        uint256  released;\n        // whether or not the vesting has been revoked\n        bool revoked;\n    }\n\n    // address of the ERC20 token\n    IERC20 immutable private _token;\n\n    bytes32[] private vestingSchedulesIds;\n    mapping(bytes32 => VestingSchedule) private vestingSchedules;\n    uint256 private vestingSchedulesTotalAmount;\n    mapping(address => uint256) private holdersVestingCount;\n    mapping(bytes32 => uint256) private vestingReleasebleCliff;\n\n    event Released(uint256 amount);\n    event Revoked();\n\n    /**\n    * @dev Reverts if no vesting schedule matches the passed identifier.\n    */\n    modifier onlyIfVestingScheduleExists(bytes32 vestingScheduleId) {\n        require(vestingSchedules[vestingScheduleId].initialized == true);\n        _;\n    }\n\n    /**\n    * @dev Reverts if the vesting schedule does not exist or has been revoked.\n    */\n    modifier onlyIfVestingScheduleNotRevoked(bytes32 vestingScheduleId) {\n        require(vestingSchedules[vestingScheduleId].initialized == true && vestingSchedules[vestingScheduleId].revoked == false);\n        _;\n    }\n\n    /**\n     * @dev Creates a vesting contract.\n     * @param token_ address of the ERC20 token contract\n     */\n    constructor(address token_) {\n        require(token_ != address(0x0));\n        _token = IERC20(token_);\n    }\n\n    receive() external payable {}\n\n    fallback() external payable {}\n\n    /**\n    * @dev Returns the number of vesting schedules associated to a beneficiary.\n    * @return the number of vesting schedules\n    */\n    function getVestingSchedulesCountByBeneficiary(address _beneficiary)\n    external\n    view\n    returns(uint256){\n        return holdersVestingCount[_beneficiary];\n    }\n\n    /**\n    * @dev Returns the vesting schedule id at the given index.\n    * @return the vesting id\n    */\n    function getVestingIdAtIndex(uint256 index)\n    external\n    view\n    returns(bytes32){\n        require(index < getVestingSchedulesCount(), \"TokenVesting: index out of bounds\");\n        return vestingSchedulesIds[index];\n    }\n\n    /**\n    * @notice Returns the vesting schedule information for a given holder and index.\n    * @return the vesting schedule structure information\n    */\n    function getVestingScheduleByAddressAndIndex(address holder, uint256 index)\n    external\n    view\n    returns(VestingSchedule memory){\n        return getVestingSchedule(computeVestingScheduleIdForAddressAndIndex(holder, index));\n    }\n\n\n    /**\n    * @notice Returns the total amount of vesting schedules.\n    * @return the total amount of vesting schedules\n    */\n    function getVestingSchedulesTotalAmount()\n    external\n    view\n    returns(uint256){\n        return vestingSchedulesTotalAmount;\n    }\n\n    /**\n    * @notice Returns the total amount of vesting cliff amount.\n    * @return the total amount of vesting cliff amount\n    */\n    function getVestingSchedulesTotalCliff(bytes32 vestingScheduleId)\n    external\n    view\n    returns(uint256){\n        return vestingReleasebleCliff[vestingScheduleId];\n    }\n\n    /**\n    * @dev Returns the address of the ERC20 token managed by the vesting contract.\n    */\n    function getToken()\n    external\n    view\n    returns(address){\n        return address(_token);\n    }\n\n    /**\n    * @notice Creates a new vesting schedule for a beneficiary.\n    * @param _beneficiary address of the beneficiary to whom vested tokens are transferred\n    * @param _tgeUnlock percent of amount for cliff usable amount \n    * @param _start start time of the vesting period\n    * @param _cliff duration in seconds of the cliff in which tokens will begin to vest\n    * @param _duration duration in seconds of the period in which the tokens will vest\n    * @param _slicePeriodSeconds duration of a slice period for the vesting in seconds\n    * @param _revocable whether the vesting is revocable or not\n    * @param _amount total amount of tokens to be released at the end of the vesting\n    */\n    function createVestingSchedule(\n        address _beneficiary,\n        uint256 _tgeUnlock,\n        uint256 _start,\n        uint256 _cliff,\n        uint256 _duration,\n        uint256 _slicePeriodSeconds,\n        bool _revocable,\n        uint256 _amount\n    )\n        public\n        onlyOwner{\n        require(\n            this.getWithdrawableAmount() >= _amount,\n            \"TokenVesting: cannot create vesting schedule because not sufficient tokens\"\n        );\n        require(_duration > 0, \"TokenVesting: duration must be > 0\");\n        require(_amount > 0, \"TokenVesting: amount must be > 0\");\n        require(_slicePeriodSeconds >= 1, \"TokenVesting: slicePeriodSeconds must be >= 1\");\n        bytes32 vestingScheduleId = this.computeNextVestingScheduleIdForHolder(_beneficiary);\n        uint256 cliff = _start.add(_cliff);\n\n        uint256 totalCliffAmount = _amount.mul(_tgeUnlock).div(100);\n\n        vestingSchedules[vestingScheduleId] = VestingSchedule(\n            true,\n            _tgeUnlock,\n            _beneficiary,\n            cliff,\n            _start,\n            _duration,\n            _slicePeriodSeconds,\n            _revocable,\n            _amount.sub(totalCliffAmount),\n            0,\n            false\n        );\n\n        \n        vestingReleasebleCliff[vestingScheduleId] = totalCliffAmount;\n        vestingSchedulesTotalAmount = vestingSchedulesTotalAmount.add(_amount.sub(totalCliffAmount));\n        vestingSchedulesIds.push(vestingScheduleId);\n        uint256 currentVestingCount = holdersVestingCount[_beneficiary];\n        holdersVestingCount[_beneficiary] = currentVestingCount.add(1);\n\n        emit CreatedVestingSchedule(currentVestingCount);\n    }\n\n    /**\n    * @notice Revokes the vesting schedule for given identifier.\n    * @param vestingScheduleId the vesting schedule identifier\n    */\n    function revoke(bytes32 vestingScheduleId)\n        public\n        onlyOwner\n        onlyIfVestingScheduleNotRevoked(vestingScheduleId){\n        VestingSchedule storage vestingSchedule = vestingSchedules[vestingScheduleId];\n        require(vestingSchedule.revocable == true, \"TokenVesting: vesting is not revocable\");\n        uint256 vestedAmount = _computeReleasableAmount(vestingSchedule);\n        if(vestedAmount > 0){\n            release(vestingScheduleId, vestedAmount);\n        }\n        uint256 unreleased = vestingSchedule.amountTotal.sub(vestingSchedule.released);\n        vestingSchedulesTotalAmount = vestingSchedulesTotalAmount.sub(unreleased);\n\n        uint256 vestedCliffAmount = _computeReleasableCliffAmount(vestingScheduleId);\n        if(vestedCliffAmount > 0){\n            releaseCliff(vestingScheduleId, vestedCliffAmount);\n        }\n        vestingReleasebleCliff[vestingScheduleId] = 0;\n\n        vestingSchedule.revoked = true;\n    }\n\n    /**\n    * @notice Withdraw the specified amount if possible.\n    * @param amount the amount to withdraw\n    */\n    function withdraw(uint256 amount)\n        public\n        nonReentrant\n        onlyOwner{\n        require(this.getWithdrawableAmount() >= amount, \"TokenVesting: not enough withdrawable funds\");\n        _token.safeTransfer(owner(), amount);\n    }\n\n    /**\n    * @notice Release vested amount of tokens.\n    * @param vestingScheduleId the vesting schedule identifier\n    * @param amount the amount to release\n    */\n    function release(\n        bytes32 vestingScheduleId,\n        uint256 amount\n    )\n        public\n        nonReentrant\n        onlyIfVestingScheduleNotRevoked(vestingScheduleId){\n\n        VestingSchedule storage vestingSchedule = vestingSchedules[vestingScheduleId];\n\n        require(\n            msg.sender == vestingSchedule.beneficiary || msg.sender == owner(),\n            \"TokenVesting: only beneficiary and owner can release vested tokens\"\n        );\n        uint256 vestedAmount = _computeReleasableAmount(vestingSchedule);\n        require(vestedAmount >= amount, \"TokenVesting: cannot release tokens, not enough vested tokens\");\n        vestingSchedule.released = vestingSchedule.released.add(amount);\n        address payable beneficiaryPayable = payable(vestingSchedule.beneficiary);\n        vestingSchedulesTotalAmount = vestingSchedulesTotalAmount.sub(amount);\n        _token.safeTransfer(beneficiaryPayable, amount);\n    }\n\n    /**\n    * @notice Release vested cliff amount of tokens.\n    * @param vestingScheduleId the vesting schedule identifier\n    * @param amount the amount to releaseCliff\n    */\n    function releaseCliff(\n        bytes32 vestingScheduleId,\n        uint256 amount\n    )\n        public\n        nonReentrant\n        onlyIfVestingScheduleNotRevoked(vestingScheduleId){\n\n        VestingSchedule storage vestingSchedule = vestingSchedules[vestingScheduleId];\n\n        require(\n            msg.sender == vestingSchedule.beneficiary || msg.sender == owner(),\n            \"TokenVesting: only beneficiary and owner can release vested tokens\"\n        );\n        uint256 vestedCliffAmount = _computeReleasableCliffAmount(vestingScheduleId);\n        require(vestedCliffAmount >= amount, \"TokenVesting: cannot release tokens, not enough cliff vested tokens\");\n        \n        address payable beneficiaryPayable = payable(vestingSchedule.beneficiary);\n\n        vestingReleasebleCliff[vestingScheduleId] = vestingReleasebleCliff[vestingScheduleId].sub(amount);\n        _token.safeTransfer(beneficiaryPayable, amount);\n    }\n\n    /**\n    * @dev Returns the number of vesting schedules managed by this contract.\n    * @return the number of vesting schedules\n    */\n    function getVestingSchedulesCount()\n        public\n        view\n        returns(uint256){\n        return vestingSchedulesIds.length;\n    }\n\n    /**\n    * @notice Computes the vested amount of tokens for the given vesting schedule identifier.\n    * @return the vested amount\n    */\n    function computeReleasableAmount(bytes32 vestingScheduleId)\n        public\n        onlyIfVestingScheduleNotRevoked(vestingScheduleId)\n        view\n        returns(uint256){\n        VestingSchedule storage vestingSchedule = vestingSchedules[vestingScheduleId];\n        return _computeReleasableAmount(vestingSchedule);\n    }\n\n    /**\n    * @notice Computes the vested cliff amount of tokens for the given vesting schedule identifier.\n    * @return the vested cliff amount\n    */\n    function computeReleasableCliffAmount(bytes32 vestingScheduleId)\n        public\n        onlyIfVestingScheduleNotRevoked(vestingScheduleId)\n        view\n        returns(uint256){\n        return _computeReleasableCliffAmount(vestingScheduleId);\n    }\n\n    /**\n    * @notice Returns the vesting schedule information for a given identifier.\n    * @return the vesting schedule structure information\n    */\n    function getVestingSchedule(bytes32 vestingScheduleId)\n        public\n        view\n        returns(VestingSchedule memory){\n        return vestingSchedules[vestingScheduleId];\n    }\n\n    /**\n    * @dev Returns the amount of tokens that can be withdrawn by the owner.\n    * @return the amount of tokens\n    */\n    function getWithdrawableAmount()\n        public\n        view\n        returns(uint256){\n        return _token.balanceOf(address(this)).sub(vestingSchedulesTotalAmount);\n    }\n\n    /**\n    * @dev Computes the next vesting schedule identifier for a given holder address.\n    */\n    function computeNextVestingScheduleIdForHolder(address holder)\n        public\n        view\n        returns(bytes32){\n        return computeVestingScheduleIdForAddressAndIndex(holder, holdersVestingCount[holder]);\n    }\n\n    /**\n    * @dev Returns the last vesting schedule for a given holder address.\n    */\n    function getLastVestingScheduleForHolder(address holder)\n        public\n        view\n        returns(VestingSchedule memory){\n        return vestingSchedules[computeVestingScheduleIdForAddressAndIndex(holder, holdersVestingCount[holder] - 1)];\n    }\n\n    /**\n    * @dev Computes the vesting schedule identifier for an address and an index.\n    */\n    function computeVestingScheduleIdForAddressAndIndex(address holder, uint256 index)\n        public\n        pure\n        returns(bytes32){\n        return keccak256(abi.encodePacked(holder, index));\n    }\n\n    /**\n    * @dev Computes the releasable amount of tokens for a vesting schedule.\n    * @return the amount of releasable tokens\n    */\n    function _computeReleasableAmount(VestingSchedule memory vestingSchedule)\n    internal\n    view\n    returns(uint256){\n        uint256 currentTime = getCurrentTime();\n        uint256 cliffInSeconds = vestingSchedule.cliff.sub(vestingSchedule.start);\n\n        if ((currentTime < vestingSchedule.cliff) || vestingSchedule.revoked == true) {\n            return 0;\n        } else if (currentTime >= vestingSchedule.start.add(vestingSchedule.duration).add(cliffInSeconds)) {\n            return vestingSchedule.amountTotal.sub(vestingSchedule.released); \n        } else {\n            uint256 timeFromStart = currentTime.sub(vestingSchedule.start);\n            uint secondsPerSlice = vestingSchedule.slicePeriodSeconds;\n            uint256 vestedSlicePeriods = timeFromStart.div(secondsPerSlice);\n            uint256 vestedSeconds = vestedSlicePeriods.mul(secondsPerSlice);\n\n            uint256 vestedAmount = 0;\n            uint256 customPerSlice = vestedSeconds;\n            \n            if (vestedSeconds == cliffInSeconds){ //  after cliff seconds first\n                customPerSlice = secondsPerSlice;\n            } else if (vestedSeconds > cliffInSeconds) {\n                customPerSlice = vestedSeconds.sub(cliffInSeconds).add(secondsPerSlice);\n            }\n\n            // set max limit as duration\n            if(customPerSlice >= vestingSchedule.duration) {\n                customPerSlice = vestingSchedule.duration;\n            }\n\n            vestedAmount = vestingSchedule.amountTotal.mul(customPerSlice).div(vestingSchedule.duration);\n            vestedAmount = vestedAmount.sub(vestingSchedule.released);\n\n            return vestedAmount;\n        }\n    }\n\n    /**\n    * @dev Computes the releasable amount of tokens for a vesting schedule.\n    * @return the amount of releasable tokens\n    */\n    function _computeReleasableCliffAmount(bytes32 vestingScheduleId)\n    internal\n    view\n    returns(uint256){\n        return vestingReleasebleCliff[vestingScheduleId];\n    }\n\n    function getCurrentTime()\n        internal\n        virtual\n        view\n        returns(uint256){\n        return block.timestamp;\n    }\n\n}"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `to`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address to, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `from` to `to` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 amount\n    ) external returns (bool);\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n    using Address for address;\n\n    function safeTransfer(\n        IERC20 token,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    function safeTransferFrom(\n        IERC20 token,\n        address from,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n    }\n\n    /**\n     * @dev Deprecated. This function has issues similar to the ones found in\n     * {IERC20-approve}, and its usage is discouraged.\n     *\n     * Whenever possible, use {safeIncreaseAllowance} and\n     * {safeDecreaseAllowance} instead.\n     */\n    function safeApprove(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        // safeApprove should only be called when setting an initial allowance,\n        // or when resetting it to zero. To increase and decrease it, use\n        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n        require(\n            (value == 0) || (token.allowance(address(this), spender) == 0),\n            \"SafeERC20: approve from non-zero to non-zero allowance\"\n        );\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n    }\n\n    function safeIncreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        uint256 newAllowance = token.allowance(address(this), spender) + value;\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n    }\n\n    function safeDecreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n            uint256 newAllowance = oldAllowance - value;\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n        }\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     */\n    function _callOptionalReturn(IERC20 token, bytes memory data) private {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n        // the target address contains contract code and also asserts for success in the low-level call.\n\n        bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n        if (returndata.length > 0) {\n            // Return data is optional\n            require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n        }\n    }\n}\n"
    },
    "@openzeppelin/contracts/security/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\nabstract contract ReentrancyGuard {\n    // Booleans are more expensive than uint256 or any type that takes up a full\n    // word because each write operation emits an extra SLOAD to first read the\n    // slot's contents, replace the bits taken up by the boolean, and then write\n    // back. This is the compiler's defense against contract upgrades and\n    // pointer aliasing, and it cannot be disabled.\n\n    // The values being non-zero value makes deployment a bit more expensive,\n    // but in exchange the refund on every call to nonReentrant will be lower in\n    // amount. Since refunds are capped to a percentage of the total\n    // transaction's gas, it is best to keep them low in cases like this one, to\n    // increase the likelihood of the full refund coming into effect.\n    uint256 private constant _NOT_ENTERED = 1;\n    uint256 private constant _ENTERED = 2;\n\n    uint256 private _status;\n\n    constructor() {\n        _status = _NOT_ENTERED;\n    }\n\n    /**\n     * @dev Prevents a contract from calling itself, directly or indirectly.\n     * Calling a `nonReentrant` function from another `nonReentrant`\n     * function is not supported. It is possible to prevent this from happening\n     * by making the `nonReentrant` function external, and making it call a\n     * `private` function that does the actual work.\n     */\n    modifier nonReentrant() {\n        // On the first call to nonReentrant, _notEntered will be true\n        require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n        // Any calls to nonReentrant after this point will fail\n        _status = _ENTERED;\n\n        _;\n\n        // By storing the original value once again, a refund is triggered (see\n        // https://eips.ethereum.org/EIPS/eip-2200)\n        _status = _NOT_ENTERED;\n    }\n}\n"
    },
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n        _;\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby removing any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/math/Math.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (utils/math/Math.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary Math {\n    /**\n     * @dev Returns the largest of two numbers.\n     */\n    function max(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a >= b ? a : b;\n    }\n\n    /**\n     * @dev Returns the smallest of two numbers.\n     */\n    function min(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a < b ? a : b;\n    }\n\n    /**\n     * @dev Returns the average of two numbers. The result is rounded towards\n     * zero.\n     */\n    function average(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b) / 2 can overflow.\n        return (a & b) + (a ^ b) / 2;\n    }\n\n    /**\n     * @dev Returns the ceiling of the division of two numbers.\n     *\n     * This differs from standard division with `/` in that it rounds up instead\n     * of rounding down.\n     */\n    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b - 1) / b can overflow on addition, so we distribute.\n        return a / b + (a % b == 0 ? 0 : 1);\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/math/SafeMath.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol)\n\npragma solidity ^0.8.0;\n\n// CAUTION\n// This version of SafeMath should only be used with Solidity 0.8 or later,\n// because it relies on the compiler's built in overflow checks.\n\n/**\n * @dev Wrappers over Solidity's arithmetic operations.\n *\n * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler\n * now has built in overflow checking.\n */\nlibrary SafeMath {\n    /**\n     * @dev Returns the addition of two unsigned integers, with an overflow flag.\n     *\n     * _Available since v3.4._\n     */\n    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            uint256 c = a + b;\n            if (c < a) return (false, 0);\n            return (true, c);\n        }\n    }\n\n    /**\n     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.\n     *\n     * _Available since v3.4._\n     */\n    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            if (b > a) return (false, 0);\n            return (true, a - b);\n        }\n    }\n\n    /**\n     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.\n     *\n     * _Available since v3.4._\n     */\n    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n            // benefit is lost if 'b' is also tested.\n            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n            if (a == 0) return (true, 0);\n            uint256 c = a * b;\n            if (c / a != b) return (false, 0);\n            return (true, c);\n        }\n    }\n\n    /**\n     * @dev Returns the division of two unsigned integers, with a division by zero flag.\n     *\n     * _Available since v3.4._\n     */\n    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            if (b == 0) return (false, 0);\n            return (true, a / b);\n        }\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.\n     *\n     * _Available since v3.4._\n     */\n    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            if (b == 0) return (false, 0);\n            return (true, a % b);\n        }\n    }\n\n    /**\n     * @dev Returns the addition of two unsigned integers, reverting on\n     * overflow.\n     *\n     * Counterpart to Solidity's `+` operator.\n     *\n     * Requirements:\n     *\n     * - Addition cannot overflow.\n     */\n    function add(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a + b;\n    }\n\n    /**\n     * @dev Returns the subtraction of two unsigned integers, reverting on\n     * overflow (when the result is negative).\n     *\n     * Counterpart to Solidity's `-` operator.\n     *\n     * Requirements:\n     *\n     * - Subtraction cannot overflow.\n     */\n    function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a - b;\n    }\n\n    /**\n     * @dev Returns the multiplication of two unsigned integers, reverting on\n     * overflow.\n     *\n     * Counterpart to Solidity's `*` operator.\n     *\n     * Requirements:\n     *\n     * - Multiplication cannot overflow.\n     */\n    function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a * b;\n    }\n\n    /**\n     * @dev Returns the integer division of two unsigned integers, reverting on\n     * division by zero. The result is rounded towards zero.\n     *\n     * Counterpart to Solidity's `/` operator.\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function div(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a / b;\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n     * reverting when dividing by zero.\n     *\n     * Counterpart to Solidity's `%` operator. This function uses a `revert`\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\n     * invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a % b;\n    }\n\n    /**\n     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n     * overflow (when the result is negative).\n     *\n     * CAUTION: This function is deprecated because it requires allocating memory for the error\n     * message unnecessarily. For custom revert reasons use {trySub}.\n     *\n     * Counterpart to Solidity's `-` operator.\n     *\n     * Requirements:\n     *\n     * - Subtraction cannot overflow.\n     */\n    function sub(\n        uint256 a,\n        uint256 b,\n        string memory errorMessage\n    ) internal pure returns (uint256) {\n        unchecked {\n            require(b <= a, errorMessage);\n            return a - b;\n        }\n    }\n\n    /**\n     * @dev Returns the integer division of two unsigned integers, reverting with custom message on\n     * division by zero. The result is rounded towards zero.\n     *\n     * Counterpart to Solidity's `/` operator. Note: this function uses a\n     * `revert` opcode (which leaves remaining gas untouched) while Solidity\n     * uses an invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function div(\n        uint256 a,\n        uint256 b,\n        string memory errorMessage\n    ) internal pure returns (uint256) {\n        unchecked {\n            require(b > 0, errorMessage);\n            return a / b;\n        }\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n     * reverting with custom message when dividing by zero.\n     *\n     * CAUTION: This function is deprecated because it requires allocating memory for the error\n     * message unnecessarily. For custom revert reasons use {tryMod}.\n     *\n     * Counterpart to Solidity's `%` operator. This function uses a `revert`\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\n     * invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function mod(\n        uint256 a,\n        uint256 b,\n        string memory errorMessage\n    ) internal pure returns (uint256) {\n        unchecked {\n            require(b > 0, errorMessage);\n            return a % b;\n        }\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/Address.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn't rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCall(target, data, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance >= value, \"Address: insufficient balance for call\");\n        require(isContract(target), \"Address: call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        require(isContract(target), \"Address: static call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(isContract(target), \"Address: delegate call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            // Look for revert reason and bubble it up if present\n            if (returndata.length > 0) {\n                // The easiest way to bubble the revert reason is using memory via assembly\n\n                assembly {\n                    let returndata_size := mload(returndata)\n                    revert(add(32, returndata), returndata_size)\n                }\n            } else {\n                revert(errorMessage);\n            }\n        }\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n}\n"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": false,
      "runs": 200
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "libraries": {}
  }
}