ATTokenLocker

{{
  "language": "Solidity",
  "sources": {
    "contracts/ATTokenLocker.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";

contract ATTokenLocker is Ownable, ReentrancyGuard {
    IERC20 public immutable atToken;
    
    // Token allocation constants (in wei)
    uint256 public constant TEAM_ALLOCATION = 100_000_000 * 10**18;      // 100M tokens
    uint256 public constant ECO_BUILD_ALLOCATION = 175_000_000 * 10**18; // 175M tokens
    uint256 public constant VC_ALLOCATION = 100_000_000 * 10**18;        // 100M tokens
    uint256 public constant FOUNDATION_ALLOCATION = 55_000_000 * 10**18; // 55M tokens
    uint256 public constant STAKING_ALLOCATION = 50_000_000 * 10**18;    // 50M tokens
    uint256 public constant LIQUIDITY_ALLOCATION = 15_000_000 * 10**18;  // 15M tokens
    uint256 public constant OPERATIONAL_ALLOCATION = 5_000_000 * 10**18; // 5M tokens
    uint256 public constant AIRDROP_ALLOCATION = 5_000_000 * 10**18;    // Max 5M tokens for airdrop
    
    // Time constants
    uint256 public constant MONTH_IN_SECONDS = 30 days;
    uint256 public constant HOUR_IN_SECONDS = 3600;
    
    // TGE timestamp
    uint256 public tgeTime;
    bool public tgeSet;
    
    // Beneficiary addresses
    address public constant TEAM_ADDRESS = 0x8dF605cC8043544B2806e9A329Ad6ff3bf538bd9;
    address public constant ECO_BUILD_ADDRESS = 0xaabEc410D4D9C2Dd824835508c6C504Fd856Cb2F;
    address public constant AIRDROP_ADDRESS = 0x3914E7fF9381e64F403a46ca822A084d59314FAD;
    address public constant VC_ADDRESS = 0x1FdeD2a122598277EfCee9D1CDb3349894942Ea7;
    address public constant LIQUIDITY_ADDRESS = 0x617EA7D5364812bEE037edFbac51b3df1900B602;
    address public constant FOUNDATION_ADDRESS = 0xF7F5B8724cd3F8F05c38969a531781175AA37357;
    address public constant STAKING_ADDRESS = 0xB7784de135BF98e33df6f5Af146d53aef58a18B1;
    address public constant OPERATIONAL_ADDRESS = 0xB0b92bd8d18003B9Bd2f4AecE1066A5a9AEb922A;
    
    // Vesting schedule types
    enum VestingType {
        IMMEDIATE,      // TGE 100% allocation
        VESTING_24_36,  // 24 month cliff, 36 month vesting
        VESTING_12_48,  // 12 month cliff, 48 month vesting
        VESTING_48_VOTE, // 48 month vesting after community vote
        AIRDROP_VOTE    // By voting 1 hour after TGE
    }
    
    struct VestingSchedule {
        uint256 totalAmount;
        uint256 claimedAmount;
        uint256 cliffDuration;
        uint256 vestingDuration;
        VestingType vestingType;
        bool isActive;
        bool communityVotePassed; // For staking allocation
    }
    
    // Mapping of beneficiaries to their vesting schedules
    mapping(address => VestingSchedule) public vestingSchedules;
    
    // Community vote tracking for staking allocation
    uint256 public stakingVoteStartTime;
    uint256 public stakingVoteEndTime;
    bool public stakingVoteActive;
    uint256 public stakingVoteYes;
    uint256 public stakingVoteNo;
    mapping(address => uint256) public stakingStakedAmount; // Amount of AT tokens staked for staking vote
    mapping(address => bool) public hasVotedStaking;
    uint256 public totalStakingStaked; // Total AT tokens staked for staking vote
    
    // Airdrop vote tracking
    uint256 public airdropVoteStartTime;
    uint256 public airdropVoteEndTime;
    bool public airdropVoteActive;
    uint256 public airdropVoteYes;
    uint256 public airdropVoteNo;
    mapping(address => uint256) public airdropStakedAmount; // Amount of AT tokens staked for airdrop vote
    mapping(address => bool) public hasVotedAirdrop;
    uint256 public totalAirdropStaked; // Total AT tokens staked for airdrop vote
    uint256 public airdropAllocationAmount; // Total amount allocated for airdrop
    
    // Events
    event TGESet(uint256 tgeTime);
    event TokensClaimed(address indexed beneficiary, uint256 amount);
    event StakingVoteStarted(uint256 startTime, uint256 endTime);
    event StakingVoteEnded(bool passed, uint256 yesVotes, uint256 noVotes);
    event AirdropVoteStarted(uint256 startTime, uint256 endTime);
    event AirdropVoteEnded(bool passed, uint256 yesVotes, uint256 noVotes);
    event AirdropAllocationSet(uint256 amount);
    event VoteCasted(address indexed voter, bool support, bool isStakingVote, uint256 votingPower);
    event TokensStaked(address indexed staker, uint256 amount, bool isStakingVote);
    event TokensUnstaked(address indexed staker, uint256 amount, bool isStakingVote);
    
    constructor(address _atToken) Ownable(msg.sender) {
        atToken = IERC20(_atToken);
        _initializeVestingSchedules();
    }
    
    function _initializeVestingSchedules() internal {
        // Team: 24 month cliff, 36 month vesting
        vestingSchedules[TEAM_ADDRESS] = VestingSchedule({
            totalAmount: TEAM_ALLOCATION,
            claimedAmount: 0,
            cliffDuration: 24 * MONTH_IN_SECONDS,
            vestingDuration: 36 * MONTH_IN_SECONDS,
            vestingType: VestingType.VESTING_24_36,
            isActive: true,
            communityVotePassed: false
        });
        
        // Eco Build: 12 month cliff, 48 month vesting
        vestingSchedules[ECO_BUILD_ADDRESS] = VestingSchedule({
            totalAmount: ECO_BUILD_ALLOCATION,
            claimedAmount: 0,
            cliffDuration: 12 * MONTH_IN_SECONDS,
            vestingDuration: 48 * MONTH_IN_SECONDS,
            vestingType: VestingType.VESTING_12_48,
            isActive: true,
            communityVotePassed: false
        });
        
        // VC: 24 month cliff, 36 month vesting
        vestingSchedules[VC_ADDRESS] = VestingSchedule({
            totalAmount: VC_ALLOCATION,
            claimedAmount: 0,
            cliffDuration: 24 * MONTH_IN_SECONDS,
            vestingDuration: 36 * MONTH_IN_SECONDS,
            vestingType: VestingType.VESTING_24_36,
            isActive: true,
            communityVotePassed: false
        });
        
        // Foundation: 24 month cliff, 36 month vesting
        vestingSchedules[FOUNDATION_ADDRESS] = VestingSchedule({
            totalAmount: FOUNDATION_ALLOCATION,
            claimedAmount: 0,
            cliffDuration: 24 * MONTH_IN_SECONDS,
            vestingDuration: 36 * MONTH_IN_SECONDS,
            vestingType: VestingType.VESTING_24_36,
            isActive: true,
            communityVotePassed: false
        });
        
        // Staking: Community vote dependent, 48 month vesting
        vestingSchedules[STAKING_ADDRESS] = VestingSchedule({
            totalAmount: STAKING_ALLOCATION,
            claimedAmount: 0,
            cliffDuration: 0,
            vestingDuration: 48 * MONTH_IN_SECONDS,
            vestingType: VestingType.VESTING_48_VOTE,
            isActive: false, // Will be activated after community vote passes
            communityVotePassed: false
        });
        
        // Liquidity: TGE 100% allocation
        vestingSchedules[LIQUIDITY_ADDRESS] = VestingSchedule({
            totalAmount: LIQUIDITY_ALLOCATION,
            claimedAmount: 0,
            cliffDuration: 0,
            vestingDuration: 0,
            vestingType: VestingType.IMMEDIATE,
            isActive: true,
            communityVotePassed: true
        });
        
        // Operational: TGE 100% allocation
        vestingSchedules[OPERATIONAL_ADDRESS] = VestingSchedule({
            totalAmount: OPERATIONAL_ALLOCATION,
            claimedAmount: 0,
            cliffDuration: 0,
            vestingDuration: 0,
            vestingType: VestingType.IMMEDIATE,
            isActive: true,
            communityVotePassed: true
        });
        
        // Airdrop: By voting 1 hour after TGE
        vestingSchedules[AIRDROP_ADDRESS] = VestingSchedule({
            totalAmount: AIRDROP_ALLOCATION,
            claimedAmount: 0,
            cliffDuration: HOUR_IN_SECONDS,
            vestingDuration: 0,
            vestingType: VestingType.AIRDROP_VOTE,
            isActive: false,
            communityVotePassed: false
        });
    }
    
    function setTGE(uint256 _tgeTime) external onlyOwner {
        require(!tgeSet, "TGE already set");
        require(_tgeTime > block.timestamp, "TGE must be in the future");
        tgeTime = _tgeTime;
        tgeSet = true;
        emit TGESet(_tgeTime);
    }
    
    function startStakingVote() external onlyOwner {
        require(tgeSet, "TGE not set");
        require(!stakingVoteActive, "Vote already active");
        require(block.timestamp >= tgeTime + 2 * MONTH_IN_SECONDS, "Too early to start vote");
        
        stakingVoteStartTime = block.timestamp;
        stakingVoteEndTime = block.timestamp + 7 days; // 7 days voting period
        stakingVoteActive = true;
        
        emit StakingVoteStarted(stakingVoteStartTime, stakingVoteEndTime);
    }
    
    function endStakingVote() external onlyOwner {
        require(stakingVoteActive, "No active vote");
        require(block.timestamp >= stakingVoteEndTime, "Vote period not ended");
        
        stakingVoteActive = false;
        bool passed = stakingVoteYes > stakingVoteNo;
        
        if (passed) {
            vestingSchedules[STAKING_ADDRESS].isActive = true;
            vestingSchedules[STAKING_ADDRESS].communityVotePassed = true;
        }
        
        emit StakingVoteEnded(passed, stakingVoteYes, stakingVoteNo);
    }
    
    function startAirdropVote() external onlyOwner {
        require(tgeSet, "TGE not set");
        require(!airdropVoteActive, "Vote already active");
        require(block.timestamp >= tgeTime + HOUR_IN_SECONDS, "Too early to start vote");
        
        airdropVoteStartTime = block.timestamp;
        airdropVoteEndTime = block.timestamp + 7 days; // 7 days voting period
        airdropVoteActive = true;
        
        emit AirdropVoteStarted(airdropVoteStartTime, airdropVoteEndTime);
    }
    
    function endAirdropVote() external onlyOwner {
        require(airdropVoteActive, "No active vote");
        require(block.timestamp >= airdropVoteEndTime, "Vote period not ended");
        
        airdropVoteActive = false;
        bool passed = airdropVoteYes > airdropVoteNo;
        
        if (passed) {
            vestingSchedules[AIRDROP_ADDRESS].isActive = true;
            vestingSchedules[AIRDROP_ADDRESS].communityVotePassed = true;
        }
        
        emit AirdropVoteEnded(passed, airdropVoteYes, airdropVoteNo);
    }
    
    function stakeForStakingVote(uint256 amount) external {
        require(stakingVoteActive, "No active staking vote");
        require(block.timestamp >= stakingVoteStartTime && block.timestamp <= stakingVoteEndTime, "Outside staking period");
        require(amount > 0, "Amount must be greater than 0");
        require(!hasVotedStaking[msg.sender], "Already voted, cannot stake more");
        
        require(atToken.transferFrom(msg.sender, address(this), amount), "Transfer failed");
        
        stakingStakedAmount[msg.sender] += amount;
        totalStakingStaked += amount;
        
        emit TokensStaked(msg.sender, amount, true);
    }
    
    function stakeForAirdropVote(uint256 amount) external {
        require(airdropVoteActive, "No active airdrop vote");
        require(block.timestamp >= airdropVoteStartTime && block.timestamp <= airdropVoteEndTime, "Outside staking period");
        require(amount > 0, "Amount must be greater than 0");
        require(!hasVotedAirdrop[msg.sender], "Already voted, cannot stake more");
        
        require(atToken.transferFrom(msg.sender, address(this), amount), "Transfer failed");
        
        airdropStakedAmount[msg.sender] += amount;
        totalAirdropStaked += amount;
        
        emit TokensStaked(msg.sender, amount, false);
    }
    
    function voteStaking(bool support) external {
        require(stakingVoteActive, "No active staking vote");
        require(block.timestamp >= stakingVoteStartTime && block.timestamp <= stakingVoteEndTime, "Outside voting period");
        require(!hasVotedStaking[msg.sender], "Already voted");
        require(stakingStakedAmount[msg.sender] > 0, "No tokens staked for voting");
        
        hasVotedStaking[msg.sender] = true;
        uint256 votingPower = stakingStakedAmount[msg.sender];
        
        if (support) {
            stakingVoteYes += votingPower;
        } else {
            stakingVoteNo += votingPower;
        }
        
        emit VoteCasted(msg.sender, support, true, votingPower);
    }
    
    function voteAirdrop(bool support) external {
        require(airdropVoteActive, "No active airdrop vote");
        require(block.timestamp >= airdropVoteStartTime && block.timestamp <= airdropVoteEndTime, "Outside voting period");
        require(!hasVotedAirdrop[msg.sender], "Already voted");
        require(airdropStakedAmount[msg.sender] > 0, "No tokens staked for voting");
        
        hasVotedAirdrop[msg.sender] = true;
        uint256 votingPower = airdropStakedAmount[msg.sender];
        
        if (support) {
            airdropVoteYes += votingPower;
        } else {
            airdropVoteNo += votingPower;
        }
        
        emit VoteCasted(msg.sender, support, false, votingPower);
    }
    
    function setAirdropAllocation(uint256 amount) external onlyOwner {
        require(vestingSchedules[AIRDROP_ADDRESS].isActive, "Airdrop not active");
        require(amount <= AIRDROP_ALLOCATION, "Amount exceeds max allocation");
        
        airdropAllocationAmount = amount;
        vestingSchedules[AIRDROP_ADDRESS].totalAmount = amount;
        emit AirdropAllocationSet(amount);
    }
    
    function claimableAmount(address beneficiary) public view returns (uint256) {
        VestingSchedule memory schedule = vestingSchedules[beneficiary];
        
        if (!schedule.isActive || !tgeSet) {
            return 0;
        }
        
        if (schedule.vestingType == VestingType.IMMEDIATE) {
            if (schedule.claimedAmount >= schedule.totalAmount) {
                return 0;
            }
            return schedule.totalAmount - schedule.claimedAmount;
        }
        
        uint256 currentTime = block.timestamp;
        uint256 vestingStartTime = tgeTime + schedule.cliffDuration;
        
        // Check if cliff period has passed
        if (currentTime < vestingStartTime) {
            return 0;
        }
        
        // Calculate vesting progress
        uint256 vestingElapsed = currentTime - vestingStartTime;
        if (schedule.vestingDuration == 0) {
            return schedule.totalAmount - schedule.claimedAmount;
        }
        uint256 vestingProgress = (vestingElapsed * 1e18) / schedule.vestingDuration;
        
        if (vestingProgress >= 1e18) {
            vestingProgress = 1e18;
        }
        
        uint256 totalVested = (schedule.totalAmount * vestingProgress) / 1e18;
        if (schedule.claimedAmount >= totalVested) {
            return 0;
        }
        return totalVested - schedule.claimedAmount;
    }
    
    function claim() external nonReentrant {
        uint256 amount = claimableAmount(msg.sender);
        require(amount > 0, "Nothing to claim");
        
        vestingSchedules[msg.sender].claimedAmount += amount;
        require(atToken.transfer(msg.sender, amount), "Transfer failed");
        
        emit TokensClaimed(msg.sender, amount);
    }
    
    function claimFor(address beneficiary) external nonReentrant onlyOwner {
        uint256 amount = claimableAmount(beneficiary);
        require(amount > 0, "Nothing to claim");
        
        vestingSchedules[beneficiary].claimedAmount += amount;
        require(atToken.transfer(beneficiary, amount), "Transfer failed");
        
        emit TokensClaimed(beneficiary, amount);
    }
    
    function unstakeStakingTokens() external nonReentrant {
        require(!stakingVoteActive || block.timestamp > stakingVoteEndTime, "Vote still active");
        require(stakingStakedAmount[msg.sender] > 0, "No tokens staked");
        
        uint256 amount = stakingStakedAmount[msg.sender];
        stakingStakedAmount[msg.sender] = 0;
        require(totalStakingStaked >= amount, "Insufficient total staked");
        totalStakingStaked -= amount;
        
        require(atToken.transfer(msg.sender, amount), "Transfer failed");
        emit TokensUnstaked(msg.sender, amount, true);
    }
    
    function unstakeAirdropTokens() external nonReentrant {
        require(!airdropVoteActive || block.timestamp > airdropVoteEndTime, "Vote still active");
        require(airdropStakedAmount[msg.sender] > 0, "No tokens staked");
        
        uint256 amount = airdropStakedAmount[msg.sender];
        airdropStakedAmount[msg.sender] = 0;
        require(totalAirdropStaked >= amount, "Insufficient total staked");
        totalAirdropStaked -= amount;
        
        require(atToken.transfer(msg.sender, amount), "Transfer failed");
        emit TokensUnstaked(msg.sender, amount, false);
    }
    
    function getVestingInfo(address beneficiary) external view returns (
        uint256 totalAmount,
        uint256 claimedAmount,
        uint256 claimable,
        uint256 cliffEndTime,
        uint256 vestingEndTime,
        VestingType vestingType,
        bool isActive
    ) {
        VestingSchedule memory schedule = vestingSchedules[beneficiary];
        return (
            schedule.totalAmount,
            schedule.claimedAmount,
            claimableAmount(beneficiary),
            tgeTime + schedule.cliffDuration,
            tgeTime + schedule.cliffDuration + schedule.vestingDuration,
            schedule.vestingType,
            schedule.isActive
        );
    }
    
    function getStakingStakeInfo(address staker) external view returns (
        uint256 stakedAmount,
        bool hasVoted,
        bool canUnstake
    ) {
        return (
            stakingStakedAmount[staker],
            hasVotedStaking[staker],
            !stakingVoteActive || block.timestamp > stakingVoteEndTime
        );
    }
    
    function getAirdropStakeInfo(address staker) external view returns (
        uint256 stakedAmount,
        bool hasVoted,
        bool canUnstake
    ) {
        return (
            airdropStakedAmount[staker],
            hasVotedAirdrop[staker],
            !airdropVoteActive || block.timestamp > airdropVoteEndTime
        );
    }
    
    function getVoteResults() external view returns (
        bool _stakingVoteActive,
        uint256 _stakingVoteYes,
        uint256 _stakingVoteNo,
        uint256 _totalStakingStaked,
        bool _airdropVoteActive,
        uint256 _airdropVoteYes,
        uint256 _airdropVoteNo,
        uint256 _totalAirdropStaked
    ) {
        return (
            stakingVoteActive,
            stakingVoteYes,
            stakingVoteNo,
            totalStakingStaked,
            airdropVoteActive,
            airdropVoteYes,
            airdropVoteNo,
            totalAirdropStaked
        );
    }
    
}
"
    },
    "@openzeppelin/contracts/utils/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

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

    uint256 private _status;

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

    constructor() {
        _status = NOT_ENTERED;
    }

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

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

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

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

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}
"
    },
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * 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 Ownable is Context {
    address private _owner;

    /**
     * @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.
     */
    constructor(address initialOwner) {
        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) {
        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 {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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);
}
"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

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

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}
"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "remappings": [],
    "evmVersion": "cancun"
  }
}}