//SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

abstract contract ReentrancyGuard {
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        _status = _NOT_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 {
    address private _owner;

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

    constructor() {
        _transferOwnership(_msgSender());
    }

    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

library Address {
    function isContract(address account) internal view returns (bool) {
        return account.code.length > 0;
    }

    function sendValue(address payable recipient, uint256 amount) internal {
        require(
            address(this).balance >= amount,
            "Address: insufficient balance"
        );

        (bool success, ) = recipient.call{value: amount}("");
        require(
            success,
            "Address: unable to send value, recipient may have reverted"
        );
    }

    function functionCall(address target, bytes memory data)
        internal
        returns (bytes memory)
    {
        return
            functionCallWithValue(
                target,
                data,
                0,
                "Address: low-level call failed"
            );
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return
            functionCallWithValue(
                target,
                data,
                value,
                "Address: low-level call with value failed"
            );
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(
            address(this).balance >= value,
            "Address: insufficient balance for call"
        );
        (bool success, bytes memory returndata) = target.call{value: value}(
            data
        );
        return
            verifyCallResultFromTarget(
                target,
                success,
                returndata,
                errorMessage
            );
    }

    function functionStaticCall(address target, bytes memory data)
        internal
        view
        returns (bytes memory)
    {
        return
            functionStaticCall(
                target,
                data,
                "Address: low-level static call failed"
            );
    }

    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return
            verifyCallResultFromTarget(
                target,
                success,
                returndata,
                errorMessage
            );
    }

    function functionDelegateCall(address target, bytes memory data)
        internal
        returns (bytes memory)
    {
        return
            functionDelegateCall(
                target,
                data,
                "Address: low-level delegate call failed"
            );
    }

    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return
            verifyCallResultFromTarget(
                target,
                success,
                returndata,
                errorMessage
            );
    }

    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage)
        private
        pure
    {
        if (returndata.length > 0) {
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

interface IERC20 {
    event Transfer(address indexed from, address indexed to, uint256 value);

    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function transfer(address to, uint256 amount) external returns (bool);

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

    function approve(address spender, uint256 amount) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function decimals() external view returns (uint8);
}

interface Aggregator {
    function latestRoundData()
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );
}

contract LILPEPE_Presale is ReentrancyGuard, Ownable {
    uint256 public overalllRaised;
    uint256 public presaleId;
    uint256 public USDT_MULTIPLIER;
    uint256 public ETH_MULTIPLIER;
    address public fundReceiver;
    uint256 public uniqueBuyers;

    struct PresaleData {
        uint256 startTime;
        uint256 endTime;
        uint256 price;
        uint256 nextStagePrice;
        uint256 Sold;
        uint256 tokensToSell;
        uint256 UsdtHardcap;
        uint256 amountRaised;
        bool Active;
        bool isEnableClaim;
    }

    struct VestingData {
        uint256 vestingStartTime;
        uint256 initialClaimPercent;
        uint256 vestingTime;
        uint256 vestingPercentage;
        uint256 totalClaimCycles;
    }

    struct UserData {
        uint256 investedAmount;
        uint256 claimAt;
        uint256 claimAbleAmount;
        uint256 claimedVestingAmount;
        uint256 claimedAmount;
        uint256 claimCount;
        uint256 activePercentAmount;
    }

    IERC20Metadata public USDTInterface;
    IERC20Metadata public USDCInterface;
    Aggregator internal aggregatorInterface;

    mapping(uint256 => bool) public paused;
    mapping(uint256 => PresaleData) public presale;
    mapping(uint256 => VestingData) public vesting;
    mapping(address => mapping(uint256 => UserData)) public userClaimData;
    mapping(address => bool) public isExcludeMinToken;
    mapping(address => bool) public isBlackList;
    mapping(address => bool) public isExist;

    uint256 public MinTokenTobuy;
    uint256 public currentSale;
    address public SaleToken;

    event PresaleCreated(
        uint256 indexed _id,
        uint256 _totalTokens,
        uint256 _startTime,
        uint256 _endTime
    );

    event PresaleUpdated(
        bytes32 indexed key,
        uint256 prevValue,
        uint256 newValue,
        uint256 timestamp
    );

    event TokensBought(
        address indexed user,
        uint256 indexed id,
        address indexed purchaseToken,
        uint256 tokensBought,
        uint256 amountPaid,
        uint256 timestamp
    );

    event TokensClaimed(
        address indexed user,
        uint256 indexed id,
        uint256 amount,
        uint256 timestamp
    );

    event PresaleTokenAddressUpdated(
        address indexed prevValue,
        address indexed newValue,
        uint256 timestamp
    );

    event PresalePaused(uint256 indexed id, uint256 timestamp);
    event PresaleUnpaused(uint256 indexed id, uint256 timestamp);

    constructor(
        address _oracle,
        address _usdt,
        address _usdc,
        address _SaleToken,
        uint256 _MinTokenTobuy
    ) {
        aggregatorInterface = Aggregator(_oracle);
        SaleToken = _SaleToken;
        MinTokenTobuy = _MinTokenTobuy;
        USDTInterface = IERC20Metadata(_usdt);
        USDCInterface = IERC20Metadata(_usdc);
        ETH_MULTIPLIER = (10**18);
        USDT_MULTIPLIER = (10**6);
        fundReceiver = msg.sender;
    }

    function createPresale(
        uint256 _price,
        uint256 _nextStagePrice,
        uint256 _tokensToSell,
        uint256 _UsdtHardcap
    ) external onlyOwner {
        require(_price > 0, "Zero price");
        require(_tokensToSell > 0, "Zero tokens to sell");

        presaleId++;

        presale[presaleId] = PresaleData(
            0,
            0,
            _price,
            _nextStagePrice,
            0,
            _tokensToSell,
            _UsdtHardcap,
            0,
            false,
            false
        );

        emit PresaleCreated(presaleId, _tokensToSell, 0, 0);
    }

    function setPresaleStage(uint256 _id) public onlyOwner {
        require(presale[_id].tokensToSell > 0, "Presale don't exist");
        if (currentSale != 0) {
            presale[currentSale].endTime = block.timestamp;
            presale[currentSale].Active = false;
        }
        presale[_id].startTime = block.timestamp;
        presale[_id].Active = true;
        currentSale = _id;
    }

    function setPresaleVesting(
        uint256[] memory _id,
        uint256[] memory vestingStartTime,
        uint256[] memory _initialClaimPercent,
        uint256[] memory _vestingTime,
        uint256[] memory _vestingPercentage
    ) public onlyOwner {
        for (uint256 i = 0; i < _id.length; i++) {
            vesting[_id[i]] = VestingData(
                vestingStartTime[i],
                _initialClaimPercent[i],
                _vestingTime[i],
                _vestingPercentage[i],
                (1000 - _initialClaimPercent[i]) / _vestingPercentage[i]
            );
        }
    }

    function updatePresaleVesting(
        uint256 _id,
        uint256 _vestingStartTime,
        uint256 _initialClaimPercent,
        uint256 _vestingTime,
        uint256 _vestingPercentage
    ) public onlyOwner {
        vesting[_id].vestingStartTime = _vestingStartTime;
        vesting[_id].initialClaimPercent = _initialClaimPercent;
        vesting[_id].vestingTime = _vestingTime;
        vesting[_id].vestingPercentage = _vestingPercentage;
        vesting[_id].totalClaimCycles =
            (100 - _initialClaimPercent) /
            _vestingPercentage;
    }

    uint256 initialClaimPercent;
    uint256 vestingTime;
    uint256 vestingPercentage;
    uint256 totalClaimCycles;

    function enableClaim(uint256 _id, bool _status) public onlyOwner {
        presale[_id].isEnableClaim = _status;
    }

    function updatePresale(
        uint256 _id,
        uint256 _price,
        uint256 _nextStagePrice,
        uint256 _tokensToSell,
        uint256 _Hardcap,
        bool isclaimAble
    ) external onlyOwner {
        require(_price > 0, "Zero price");
        require(_tokensToSell > 0, "Zero tokens to sell");
        require(_Hardcap > 0, "Zero harcap");
        presale[_id].price = _price;
        presale[_id].nextStagePrice = _nextStagePrice;
        presale[_id].tokensToSell = _tokensToSell;
        presale[_id].UsdtHardcap = _Hardcap;
        presale[_id].isEnableClaim = isclaimAble;
    }

    function changeFundWallet(address _wallet) external onlyOwner {
        require(_wallet != address(0), "Invalid parameters");
        fundReceiver = _wallet;
    }

    function changeUSDTToken(address _newAddress) external onlyOwner {
        require(_newAddress != address(0), "Zero token address");
        USDTInterface = IERC20Metadata(_newAddress);
    }

    function changeUSDCToken(address _newAddress) external onlyOwner {
        require(_newAddress != address(0), "Zero token address");
        USDCInterface = IERC20Metadata(_newAddress);
    }

    function pausePresale(uint256 _id) external checkPresaleId(_id) onlyOwner {
        require(!paused[_id], "Already paused");
        paused[_id] = true;
        emit PresalePaused(_id, block.timestamp);
    }

    function unPausePresale(uint256 _id)
        external
        checkPresaleId(_id)
        onlyOwner
    {
        require(paused[_id], "Not paused");
        paused[_id] = false;
        emit PresaleUnpaused(_id, block.timestamp);
    }

    function getLatestPrice() public view returns (uint256) {
        (, int256 price, , , ) = aggregatorInterface.latestRoundData();
        price = (price * (10**10));
        return uint256(price);
    }

    modifier checkPresaleId(uint256 _id) {
        require(_id > 0 && _id == currentSale, "Invalid presale id");
        _;
    }

    modifier checkSaleState(uint256 _id, uint256 amount) {
        require(presale[_id].Active == true, "preSAle not Active");
        require(
            amount > 0 &&
                amount <= presale[_id].tokensToSell - presale[_id].Sold,
            "Invalid sale amount"
        );
        _;
    }

    function ExcludeAccouctFromMinBuy(address _user, bool _status)
        external
        onlyOwner
    {
        isExcludeMinToken[_user] = _status;
    }

    function buyWithUSDT(uint256 usdAmount)
        external
        checkPresaleId(currentSale)
        checkSaleState(currentSale, usdtToTokens(currentSale, usdAmount))
        nonReentrant
        returns (bool)
    {
        require(!paused[currentSale], "Presale paused");
        require(
            presale[currentSale].Active == true,
            "Presale is not active yet"
        );
        require(!isBlackList[msg.sender], "Account is blackListed");
        require(
            presale[currentSale].amountRaised + usdAmount <=
                presale[currentSale].UsdtHardcap,
            "Amount should be less than leftHardcap"
        );
        if (!isExist[msg.sender]) {
            isExist[msg.sender] = true;
            uniqueBuyers++;
        }
        uint256 tokens = usdtToTokens(currentSale, usdAmount);
        presale[currentSale].Sold += tokens;
        presale[currentSale].amountRaised += usdAmount;
        overalllRaised += usdAmount;

        if (isExcludeMinToken[msg.sender] == false) {
            require(tokens >= MinTokenTobuy, "Less than min amount");
        }
        if (userClaimData[_msgSender()][currentSale].claimAbleAmount > 0) {
            userClaimData[_msgSender()][currentSale].claimAbleAmount += tokens;
            userClaimData[_msgSender()][currentSale].investedAmount += usdAmount;
        } else {
            userClaimData[_msgSender()][currentSale] = UserData(
                usdAmount,
                0,
                tokens,
                0,
                0,
                0,
                0
            );
        }

        uint256 ourAllowance = USDTInterface.allowance(
            _msgSender(),
            address(this)
        );
        require(usdAmount <= ourAllowance, "Make sure to add enough allowance");
        (bool success, ) = address(USDTInterface).call(
            abi.encodeWithSignature(
                "transferFrom(address,address,uint256)",
                _msgSender(),
                fundReceiver,
                usdAmount
            )
        );
        require(success, "Token payment failed");
        emit TokensBought(
            _msgSender(),
            currentSale,
            address(USDTInterface),
            tokens,
            usdAmount,
            block.timestamp
        );
        return true;
    }

    function changeClaimAddress(address _oldAddress, address _newWallet)
        public
        onlyOwner
    {
        for (uint256 i = 1; i < presaleId; i++) {
            require(isExist[_oldAddress], "User not a participant");
            userClaimData[_newWallet][i].claimAbleAmount = userClaimData[
                _oldAddress
            ][i].claimAbleAmount;
            userClaimData[_oldAddress][i].claimAbleAmount = 0;
        }
        isExist[_oldAddress] = false;
        isExist[_newWallet] = true;
    }

    function blackListUser(address _user, bool _value) public onlyOwner {
        isBlackList[_user] = _value;
    }

    function buyWithUSDC(uint256 usdcAmount)
        external
        checkPresaleId(currentSale)
        checkSaleState(currentSale, usdtToTokens(currentSale, usdcAmount))
        nonReentrant
        returns (bool)
    {
        require(!paused[currentSale], "Presale paused");
        require(
            presale[currentSale].Active == true,
            "Presale is not active yet"
        );
        require(
            presale[currentSale].amountRaised + usdcAmount <=
                presale[currentSale].UsdtHardcap,
            "Amount should be less than leftHardcap"
        );
        require(!isBlackList[msg.sender], "Account is blackListed");
        if (!isExist[msg.sender]) {
            isExist[msg.sender] = true;
            uniqueBuyers++;
        }
        uint256 tokens = usdtToTokens(currentSale, usdcAmount);
        presale[currentSale].Sold += tokens;
        presale[currentSale].amountRaised += usdcAmount;
        overalllRaised += usdcAmount;

        if (isExcludeMinToken[msg.sender] == false) {
            require(tokens >= MinTokenTobuy, "Less than min amount");
        }
        if (userClaimData[_msgSender()][currentSale].claimAbleAmount > 0) {
            userClaimData[_msgSender()][currentSale].claimAbleAmount += tokens;
            userClaimData[_msgSender()][currentSale].investedAmount += usdcAmount;
        } else {
            userClaimData[_msgSender()][currentSale] = UserData(
                usdcAmount,
                0,
                tokens,
                0,
                0,
                0,
                0
            );
            require(isExist[_msgSender()], "User not a participant");
        }

        uint256 ourAllowance = USDTInterface.allowance(
            _msgSender(),
            address(this)
        );
        require(
            usdcAmount <= ourAllowance,
            "Make sure to add enough allowance"
        );
        (bool success, ) = address(USDCInterface).call(
            abi.encodeWithSignature(
                "transferFrom(address,address,uint256)",
                _msgSender(),
                fundReceiver,
                usdcAmount
            )
        );
        require(success, "Token payment failed");
        emit TokensBought(
            _msgSender(),
            currentSale,
            address(USDTInterface),
            tokens,
            usdcAmount,
            block.timestamp
        );
        return true;
    }

    function buyWithEth()
        external
        payable
        checkPresaleId(currentSale)
        checkSaleState(currentSale, ethToTokens(currentSale, msg.value))
        nonReentrant
        returns (bool)
    {
        uint256 usdAmount = (msg.value * getLatestPrice() * USDT_MULTIPLIER) /
            (ETH_MULTIPLIER * ETH_MULTIPLIER);
        require(
            presale[currentSale].amountRaised + usdAmount <=
                presale[currentSale].UsdtHardcap,
            "Amount should be less than leftHardcap"
        );
        require(!isBlackList[msg.sender], "Account is blackListed");
        require(!paused[currentSale], "Presale paused");
        require(
            presale[currentSale].Active == true,
            "Presale is not active yet"
        );
        if (!isExist[msg.sender]) {
            isExist[msg.sender] = true;
            uniqueBuyers++;
        }

        uint256 tokens = usdtToTokens(currentSale, usdAmount);
        if (isExcludeMinToken[msg.sender] == false) {
            require(tokens >= MinTokenTobuy, "Insufficient amount!");
        }
        presale[currentSale].Sold += tokens;
        presale[currentSale].amountRaised += usdAmount;
        overalllRaised += usdAmount;

        if (userClaimData[_msgSender()][currentSale].claimAbleAmount > 0) {
            userClaimData[_msgSender()][currentSale].claimAbleAmount += tokens;
            userClaimData[_msgSender()][currentSale].investedAmount += usdAmount;
        } else {
            userClaimData[_msgSender()][currentSale] = UserData(
                usdAmount,
                0, // Last claimed at
                tokens, // total tokens to be claimed
                0, // vesting claimed amount
                0, // claimed amount
                0, // claim count
                0 // vesting percent
            );
        }

        sendValue(payable(fundReceiver), msg.value);
        emit TokensBought(
            _msgSender(),
            currentSale,
            address(0),
            tokens,
            msg.value,
            block.timestamp
        );
        return true;
    }

    function ethBuyHelper(uint256 _id, uint256 amount)
        external
        view
        returns (uint256 ethAmount)
    {
        uint256 usdPrice = (amount * presale[_id].price);
        ethAmount =
            (usdPrice * ETH_MULTIPLIER) /
            (getLatestPrice() * 10**IERC20Metadata(SaleToken).decimals());
    }

    function usdtBuyHelper(uint256 _id, uint256 amount)
        external
        view
        returns (uint256 usdPrice)
    {
        usdPrice =
            (amount * presale[_id].price) /
            10**IERC20Metadata(SaleToken).decimals();
    }

    function ethToTokens(uint256 _id, uint256 amount)
        public
        view
        returns (uint256 _tokens)
    {
        uint256 usdAmount = (amount * getLatestPrice() * USDT_MULTIPLIER) /
            (ETH_MULTIPLIER * ETH_MULTIPLIER);
        _tokens = usdtToTokens(_id, usdAmount);
    }

    function usdtToTokens(uint256 _id, uint256 amount)
        public
        view
        returns (uint256 _tokens)
    {
        _tokens = (amount * presale[_id].price) / USDT_MULTIPLIER;
    }

    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Low balance");
        (bool success, ) = recipient.call{value: amount}("");
        require(success, "ETH Payment failed");
    }

    function claimableAmount(address user, uint256 _id)
        public
        view
        returns (uint256)
    {
        UserData memory _user = userClaimData[user][_id];

        require(_user.claimAbleAmount > 0, "Nothing to claim");
        uint256 amount = _user.claimAbleAmount;
        require(amount > 0, "Already claimed");
        return amount;
    }

    function claimMultiple() public {
        for(uint8 i=1 ; i<=presaleId ; i++){
            if(userClaimData[msg.sender][i].claimAbleAmount > 0 && 
            block.timestamp > vesting[i].vestingStartTime){
                claim(msg.sender, i);
            }
        }
    }

    function claimAmount(uint256 _id) public {
        claim(msg.sender, _id);
    }

    function claim(address _user, uint256 _id) internal returns (bool) {
        require(isExist[_msgSender()], "User not a participant");
        uint256 amount = claimableAmount(_user, _id);
        require(amount > 0, "No claimable amount");
        require(!isBlackList[_user], "Account is blackListed");
        require(SaleToken != address(0), "Presale token address not set");
        require(
            amount <= IERC20(SaleToken).balanceOf(address(this)),
            "Not enough tokens in the contract"
        );
        require((presale[_id].isEnableClaim == true), "Claim is not enable");
        require(block.timestamp > vesting[_id].vestingStartTime,"Vesting time is not started yet");
        uint256 transferAmount;
        if (userClaimData[_user][_id].claimCount == 0) {
            transferAmount =
                (amount * (vesting[_id].initialClaimPercent)) /
                1000;
            userClaimData[_user][_id].activePercentAmount =
                (amount * vesting[_id].vestingPercentage) /
                1000;
            bool status = IERC20(SaleToken).transfer(
                _user,
                transferAmount
            );
            require(status, "Token transfer failed");
            userClaimData[_user][_id].claimAbleAmount -= transferAmount;
            userClaimData[_user][_id].claimedAmount += transferAmount;
            userClaimData[_user][_id].claimCount++;
        } else if (
            userClaimData[_user][_id].claimAbleAmount >
            userClaimData[_user][_id].activePercentAmount
        ) {
            uint256 duration = block.timestamp - vesting[_id].vestingStartTime;
            uint256 multiplier = duration / vesting[_id].vestingTime;
            if (multiplier > vesting[_id].totalClaimCycles) {
                multiplier = vesting[_id].totalClaimCycles;
            }
            uint256 _amount = multiplier *
                userClaimData[_user][_id].activePercentAmount;
            transferAmount =
                _amount -
                userClaimData[_user][_id].claimedVestingAmount;
            require(transferAmount > 0, "Please wait till next claim");
            bool status = IERC20(SaleToken).transfer(
                _user,
                transferAmount
            );
            require(status, "Token transfer failed");
            userClaimData[_user][_id].claimAbleAmount -= transferAmount;
            userClaimData[_user][_id]
                .claimedVestingAmount += transferAmount;
            userClaimData[_user][_id].claimedAmount += transferAmount;
            userClaimData[_user][_id].claimCount++;
        } else {
            uint256 duration = block.timestamp - vesting[_id].vestingStartTime;
            uint256 multiplier = duration / vesting[_id].vestingTime;
            if (multiplier > vesting[_id].totalClaimCycles + 1) {
                transferAmount = userClaimData[_user][_id].claimAbleAmount;
                require(transferAmount > 0, "Please wait till next claim");
                bool status = IERC20(SaleToken).transfer(
                    _user,
                    transferAmount
                );
                require(status, "Token transfer failed");
                userClaimData[_user][_id]
                    .claimAbleAmount -= transferAmount;
                userClaimData[_user][_id].claimedAmount += transferAmount;
                userClaimData[_user][_id]
                    .claimedVestingAmount += transferAmount;
                userClaimData[_user][_id].claimCount++;
            } else {
                revert("Wait for next claiim");
            }
        }
        return true;
    }

    function WithdrawTokens(address _token, uint256 amount) external onlyOwner {
        IERC20(_token).transfer(fundReceiver, amount);
    }

    function WithdrawContractFunds(uint256 amount) external onlyOwner {
        sendValue(payable(fundReceiver), amount);
    }

    function ChangeTokenToSell(address _token) public onlyOwner {
        SaleToken = _token;
    }

    function ChangeMinTokenToBuy(uint256 _amount) public onlyOwner {
        MinTokenTobuy = _amount;
    }

    function ChangeOracleAddress(address _oracle) public onlyOwner {
        aggregatorInterface = Aggregator(_oracle);
    }

    function blockTimeStamp() public view returns(uint256) {
        return block.timestamp;
    }
}

pragma solidity ^0.4.17;

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        assert(c / a == b);
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // assert(b > 0); // Solidity automatically throws when dividing by 0
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        assert(b <= a);
        return a - b;
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        assert(c >= a);
        return c;
    }
}

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
    address public owner;

    /**
      * @dev The Ownable constructor sets the original `owner` of the contract to the sender
      * account.
      */
    function Ownable() public {
        owner = msg.sender;
    }

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

    /**
    * @dev Allows the current owner to transfer control of the contract to a newOwner.
    * @param newOwner The address to transfer ownership to.
    */
    function transferOwnership(address newOwner) public onlyOwner {
        if (newOwner != address(0)) {
            owner = newOwner;
        }
    }

}

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20Basic {
    uint public _totalSupply;
    function totalSupply() public constant returns (uint);
    function balanceOf(address who) public constant returns (uint);
    function transfer(address to, uint value) public;
    event Transfer(address indexed from, address indexed to, uint value);
}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
    function allowance(address owner, address spender) public constant returns (uint);
    function transferFrom(address from, address to, uint value) public;
    function approve(address spender, uint value) public;
    event Approval(address indexed owner, address indexed spender, uint value);
}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is Ownable, ERC20Basic {
    using SafeMath for uint;

    mapping(address => uint) public balances;

    // additional variables for use if transaction fees ever became necessary
    uint public basisPointsRate = 0;
    uint public maximumFee = 0;

    /**
    * @dev Fix for the ERC20 short address attack.
    */
    modifier onlyPayloadSize(uint size) {
        require(!(msg.data.length < size + 4));
        _;
    }

    /**
    * @dev transfer token for a specified address
    * @param _to The address to transfer to.
    * @param _value The amount to be transferred.
    */
    function transfer(address _to, uint _value) public onlyPayloadSize(2 * 32) {
        uint fee = (_value.mul(basisPointsRate)).div(10000);
        if (fee > maximumFee) {
            fee = maximumFee;
        }
        uint sendAmount = _value.sub(fee);
        balances[msg.sender] = balances[msg.sender].sub(_value);
        balances[_to] = balances[_to].add(sendAmount);
        if (fee > 0) {
            balances[owner] = balances[owner].add(fee);
            Transfer(msg.sender, owner, fee);
        }
        Transfer(msg.sender, _to, sendAmount);
    }

    /**
    * @dev Gets the balance of the specified address.
    * @param _owner The address to query the the balance of.
    * @return An uint representing the amount owned by the passed address.
    */
    function balanceOf(address _owner) public constant returns (uint balance) {
        return balances[_owner];
    }

}

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev Based oncode by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is BasicToken, ERC20 {

    mapping (address => mapping (address => uint)) public allowed;

    uint public constant MAX_UINT = 2**256 - 1;

    /**
    * @dev Transfer tokens from one address to another
    * @param _from address The address which you want to send tokens from
    * @param _to address The address which you want to transfer to
    * @param _value uint the amount of tokens to be transferred
    */
    function transferFrom(address _from, address _to, uint _value) public onlyPayloadSize(3 * 32) {
        var _allowance = allowed[_from][msg.sender];

        // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
        // if (_value > _allowance) throw;

        uint fee = (_value.mul(basisPointsRate)).div(10000);
        if (fee > maximumFee) {
            fee = maximumFee;
        }
        if (_allowance < MAX_UINT) {
            allowed[_from][msg.sender] = _allowance.sub(_value);
        }
        uint sendAmount = _value.sub(fee);
        balances[_from] = balances[_from].sub(_value);
        balances[_to] = balances[_to].add(sendAmount);
        if (fee > 0) {
            balances[owner] = balances[owner].add(fee);
            Transfer(_from, owner, fee);
        }
        Transfer(_from, _to, sendAmount);
    }

    /**
    * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
    * @param _spender The address which will spend the funds.
    * @param _value The amount of tokens to be spent.
    */
    function approve(address _spender, uint _value) public onlyPayloadSize(2 * 32) {

        // To change the approve amount you first have to reduce the addresses`
        //  allowance to zero by calling `approve(_spender, 0)` if it is not
        //  already 0 to mitigate the race condition described here:
        //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
        require(!((_value != 0) && (allowed[msg.sender][_spender] != 0)));

        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
    }

    /**
    * @dev Function to check the amount of tokens than an owner allowed to a spender.
    * @param _owner address The address which owns the funds.
    * @param _spender address The address which will spend the funds.
    * @return A uint specifying the amount of tokens still available for the spender.
    */
    function allowance(address _owner, address _spender) public constant returns (uint remaining) {
        return allowed[_owner][_spender];
    }

}


/**
 * @title Pausable
 * @dev Base contract which allows children to implement an emergency stop mechanism.
 */
contract Pausable is Ownable {
  event Pause();
  event Unpause();

  bool public paused = false;


  /**
   * @dev Modifier to make a function callable only when the contract is not paused.
   */
  modifier whenNotPaused() {
    require(!paused);
    _;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is paused.
   */
  modifier whenPaused() {
    require(paused);
    _;
  }

  /**
   * @dev called by the owner to pause, triggers stopped state
   */
  function pause() onlyOwner whenNotPaused public {
    paused = true;
    Pause();
  }

  /**
   * @dev called by the owner to unpause, returns to normal state
   */
  function unpause() onlyOwner whenPaused public {
    paused = false;
    Unpause();
  }
}

contract BlackList is Ownable, BasicToken {

    /////// Getters to allow the same blacklist to be used also by other contracts (including upgraded Tether) ///////
    function getBlackListStatus(address _maker) external constant returns (bool) {
        return isBlackListed[_maker];
    }

    function getOwner() external constant returns (address) {
        return owner;
    }

    mapping (address => bool) public isBlackListed;
    
    function addBlackList (address _evilUser) public onlyOwner {
        isBlackListed[_evilUser] = true;
        AddedBlackList(_evilUser);
    }

    function removeBlackList (address _clearedUser) public onlyOwner {
        isBlackListed[_clearedUser] = false;
        RemovedBlackList(_clearedUser);
    }

    function destroyBlackFunds (address _blackListedUser) public onlyOwner {
        require(isBlackListed[_blackListedUser]);
        uint dirtyFunds = balanceOf(_blackListedUser);
        balances[_blackListedUser] = 0;
        _totalSupply -= dirtyFunds;
        DestroyedBlackFunds(_blackListedUser, dirtyFunds);
    }

    event DestroyedBlackFunds(address _blackListedUser, uint _balance);

    event AddedBlackList(address _user);

    event RemovedBlackList(address _user);

}

contract UpgradedStandardToken is StandardToken{
    // those methods are called by the legacy contract
    // and they must ensure msg.sender to be the contract address
    function transferByLegacy(address from, address to, uint value) public;
    function transferFromByLegacy(address sender, address from, address spender, uint value) public;
    function approveByLegacy(address from, address spender, uint value) public;
}

contract TetherToken is Pausable, StandardToken, BlackList {

    string public name;
    string public symbol;
    uint public decimals;
    address public upgradedAddress;
    bool public deprecated;

    //  The contract can be initialized with a number of tokens
    //  All the tokens are deposited to the owner address
    //
    // @param _balance Initial supply of the contract
    // @param _name Token Name
    // @param _symbol Token symbol
    // @param _decimals Token decimals
    function TetherToken(uint _initialSupply, string _name, string _symbol, uint _decimals) public {
        _totalSupply = _initialSupply;
        name = _name;
        symbol = _symbol;
        decimals = _decimals;
        balances[owner] = _initialSupply;
        deprecated = false;
    }

    // Forward ERC20 methods to upgraded contract if this one is deprecated
    function transfer(address _to, uint _value) public whenNotPaused {
        require(!isBlackListed[msg.sender]);
        if (deprecated) {
            return UpgradedStandardToken(upgradedAddress).transferByLegacy(msg.sender, _to, _value);
        } else {
            return super.transfer(_to, _value);
        }
    }

    // Forward ERC20 methods to upgraded contract if this one is deprecated
    function transferFrom(address _from, address _to, uint _value) public whenNotPaused {
        require(!isBlackListed[_from]);
        if (deprecated) {
            return UpgradedStandardToken(upgradedAddress).transferFromByLegacy(msg.sender, _from, _to, _value);
        } else {
            return super.transferFrom(_from, _to, _value);
        }
    }

    // Forward ERC20 methods to upgraded contract if this one is deprecated
    function balanceOf(address who) public constant returns (uint) {
        if (deprecated) {
            return UpgradedStandardToken(upgradedAddress).balanceOf(who);
        } else {
            return super.balanceOf(who);
        }
    }

    // Forward ERC20 methods to upgraded contract if this one is deprecated
    function approve(address _spender, uint _value) public onlyPayloadSize(2 * 32) {
        if (deprecated) {
            return UpgradedStandardToken(upgradedAddress).approveByLegacy(msg.sender, _spender, _value);
        } else {
            return super.approve(_spender, _value);
        }
    }

    // Forward ERC20 methods to upgraded contract if this one is deprecated
    function allowance(address _owner, address _spender) public constant returns (uint remaining) {
        if (deprecated) {
            return StandardToken(upgradedAddress).allowance(_owner, _spender);
        } else {
            return super.allowance(_owner, _spender);
        }
    }

    // deprecate current contract in favour of a new one
    function deprecate(address _upgradedAddress) public onlyOwner {
        deprecated = true;
        upgradedAddress = _upgradedAddress;
        Deprecate(_upgradedAddress);
    }

    // deprecate current contract if favour of a new one
    function totalSupply() public constant returns (uint) {
        if (deprecated) {
            return StandardToken(upgradedAddress).totalSupply();
        } else {
            return _totalSupply;
        }
    }

    // Issue a new amount of tokens
    // these tokens are deposited into the owner address
    //
    // @param _amount Number of tokens to be issued
    function issue(uint amount) public onlyOwner {
        require(_totalSupply + amount > _totalSupply);
        require(balances[owner] + amount > balances[owner]);

        balances[owner] += amount;
        _totalSupply += amount;
        Issue(amount);
    }

    // Redeem tokens.
    // These tokens are withdrawn from the owner address
    // if the balance must be enough to cover the redeem
    // or the call will fail.
    // @param _amount Number of tokens to be issued
    function redeem(uint amount) public onlyOwner {
        require(_totalSupply >= amount);
        require(balances[owner] >= amount);

        _totalSupply -= amount;
        balances[owner] -= amount;
        Redeem(amount);
    }

    function setParams(uint newBasisPoints, uint newMaxFee) public onlyOwner {
        // Ensure transparency by hardcoding limit beyond which fees can never be added
        require(newBasisPoints < 20);
        require(newMaxFee < 50);

        basisPointsRate = newBasisPoints;
        maximumFee = newMaxFee.mul(10**decimals);

        Params(basisPointsRate, maximumFee);
    }

    // Called when new token are issued
    event Issue(uint amount);

    // Called when tokens are redeemed
    event Redeem(uint amount);

    // Called when contract is deprecated
    event Deprecate(address newAddress);

    // Called if contract ever adds fees
    event Params(uint feeBasisPoints, uint maxFee);
}