// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

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

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

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

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // 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;
    }
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

abstract contract Ownable is Context {
    using SafeMath for uint256;

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

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

    /**
     * @dev 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 {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

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

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

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

library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

interface IERC20 {
    function balanceOf(address account) external view returns (uint256);

    function transfer(address recipient, uint256 amount) external;

    function allowance(address owner, address spender) external view returns (uint256);

    function decimals() external view returns (uint256);

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external;
}

contract TokenLocker is ReentrancyGuard, Ownable {
    using SafeMath for uint256;
    uint256 private lockId = 0;
    uint256 private refferalId = 0;
    uint256 private adminFeePercentage = 3;

    struct lockStruct {
        address user;
        uint256 lockAmount;
        uint256 amountToReturn;
        uint256 startTime;
        uint256 endTime;
        uint256 multipler;
        uint256 divider;
        bool isLocked;
        address token;
    }

    struct refferalStruct {
        uint256 lockId;
        address refferedUser;
        uint256 rewardAmount;
        address token;
    }

    struct UserStruct {
        address referralAddress;
        uint256[] lockIds;
        uint256[] refferalIds;
        bool isExist;
    }

    struct TokenDetails {
        address token;
        uint256 decimal;
        uint256 tokenLockedAmount;
        uint256 tokenUnlockedAmount;
    }

    mapping(uint256 => lockStruct) private lockes;
    mapping(address => UserStruct) private _userDetails;
    mapping(uint256 => refferalStruct) public refferDetails;
    mapping(address => bool) public isTokenLocked;
    address[] private lockedTokenAddresses;
    mapping(address => TokenDetails) private tokenDetails;

    event Lock(uint256 lockId, address user, address token, uint256 amount, uint256 endTime);
    event Unlock(uint256 lockId, address user, uint256 amount);

    function lock(
        uint256 amount,
        uint256 endTime,
        address _token,
        address _referralAddress,
        uint256 _multipler,
        uint256 _divider
    ) external nonReentrant {
        require(amount > 0, "Amount must be greater than zero");
        require(msg.sender != _referralAddress, "referral address cannot be same");
        uint256 lockAmount = amount;
        require(endTime > block.timestamp);
        uint256 duration = endTime - block.timestamp;
        require(duration >= 7 days && duration <= 20 * 365 days, "Invalid duration");

        if (_userDetails[msg.sender].isExist) {
            _referralAddress = _userDetails[msg.sender].referralAddress;
        } else {
            _userDetails[msg.sender].isExist = true;
            _userDetails[msg.sender].referralAddress = _referralAddress;
        }

        IERC20 token = IERC20(_token);

        require(token.balanceOf(msg.sender) >= amount, "Insufficient balance");
        require(token.allowance(msg.sender, address(this)) >= amount, "Insufficient allowance");
        uint256 decimal = token.decimals();
        token.transferFrom(msg.sender, address(this), amount);

        uint256 adminFee = amount.mul(adminFeePercentage).div(100);
        amount = amount.sub(adminFee);

        if (_referralAddress != address(0)) {
            adminFee = adminFee.div(2);
            token.transfer(_referralAddress, adminFee);
            _userDetails[_referralAddress].refferalIds.push(refferalId);
            refferDetails[refferalId] = refferalStruct({lockId: lockId, refferedUser: msg.sender, rewardAmount: adminFee, token: _token});
            refferalId++;
        }
        token.transfer(owner(), adminFee);
        _userDetails[msg.sender].lockIds.push(lockId);
        lockes[lockId] = lockStruct({user: msg.sender, amountToReturn: amount, lockAmount: lockAmount, startTime: block.timestamp, endTime: endTime, isLocked: true, token: _token, multipler: _multipler, divider: _divider});
        emit Lock(lockId, msg.sender, _token, amount, endTime);
        lockId++;
        if (!isTokenLocked[_token]) {
            isTokenLocked[_token] = true;
            lockedTokenAddresses.push(_token);
            tokenDetails[_token].token = _token;
            tokenDetails[_token].decimal = decimal;
        }
        tokenDetails[_token].tokenLockedAmount += lockAmount;
    }

    function getCurrentLockId() public view returns (uint256) {
        return lockId;
    }

    function getUserStakeIds(address _user) public view returns (uint256[] memory) {
        return _userDetails[_user].lockIds;
    }

    function getUserDetails(address _user) public view returns (UserStruct memory) {
        return _userDetails[_user];
    }

    function getLockDetails(uint256 _lockId) public view returns (lockStruct memory lockDetails_, uint256 decimal_) {
        lockDetails_ = lockes[_lockId];
        decimal_ = tokenDetails[lockDetails_.token].decimal;

        return (lockDetails_, decimal_);
    }

    function getLockedTokensAddresses() public view returns (address[] memory) {
        return lockedTokenAddresses;
    }

    function getLockedTokenDetails() public view returns (TokenDetails[] memory) {
        uint256 length = lockedTokenAddresses.length;
        TokenDetails[] memory details = new TokenDetails[](length);

        for (uint256 i = 0; i < length; i++) {
            details[i] = tokenDetails[lockedTokenAddresses[i]];
        }

        return details;
    }

    function getAdminFeePercentage() public view returns (uint256) {
        return adminFeePercentage;
    }

    function getCurrentRefferalId() public view returns (uint256) {
        return refferalId;
    }

    function setAdminFeePercentage(uint256 _adminFeePercentage) public onlyOwner {
        adminFeePercentage = _adminFeePercentage;
    }

    function unlock(uint256 _lockId) external nonReentrant {
        lockStruct storage lockData = lockes[_lockId];
        require(lockData.user == msg.sender, "Not the owner of the lock");
        require(lockData.isLocked, "Lock is not active");

        uint256 amountToReturn = lockData.amountToReturn;
        IERC20 token = IERC20(lockData.token);

        if (lockData.endTime > block.timestamp) {
            amountToReturn = amountToReturn.div(2);
        }
        token.transfer(msg.sender, amountToReturn);
        lockData.isLocked = false;
        emit Unlock(_lockId, msg.sender, amountToReturn);
        tokenDetails[lockData.token].tokenUnlockedAmount += lockData.lockAmount;
    }
}

{
  "compilationTarget": {
    "TokenLocker.sol": "TokenLocker"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}