//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 0.6.6;


/**
 * @title The Owned contract
 * @notice A contract with helpers for basic contract ownership.
 */
contract Owned {

  address payable public owner;
  address private pendingOwner;

  event OwnershipTransferRequested(
    address indexed from,
    address indexed to
  );
  event OwnershipTransferred(
    address indexed from,
    address indexed to
  );

  constructor() public {
    owner = msg.sender;
  }

  /**
   * @dev Allows an owner to begin transferring ownership to a new address,
   * pending.
   */
  function transferOwnership(address _to)
    external
    onlyOwner()
  {
    pendingOwner = _to;

    emit OwnershipTransferRequested(owner, _to);
  }

  /**
   * @dev Allows an ownership transfer to be completed by the recipient.
   */
  function acceptOwnership()
    external
  {
    require(msg.sender == pendingOwner, "Must be proposed owner");

    address oldOwner = owner;
    owner = msg.sender;
    pendingOwner = address(0);

    emit OwnershipTransferred(oldOwner, msg.sender);
  }

  /**
   * @dev Reverts if called by anyone other than the contract owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner, "Only callable by owner");
    _;
  }

}

interface AggregatorInterface {
  function latestAnswer() external view returns (int256);
  function latestTimestamp() external view returns (uint256);
  function latestRound() external view returns (uint256);
  function getAnswer(uint256 roundId) external view returns (int256);
  function getTimestamp(uint256 roundId) external view returns (uint256);

  event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 updatedAt);
  event NewRound(uint256 indexed roundId, address indexed startedBy, uint256 startedAt);
}

interface AggregatorV3Interface {

  function decimals() external view returns (uint8);
  function description() external view returns (string memory);
  function version() external view returns (uint256);

  // getRoundData and latestRoundData should both raise "No data present"
  // if they do not have data to report, instead of returning unset values
  // which could be misinterpreted as actual reported values.
  function getRoundData(uint80 _roundId)
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );
  function latestRoundData()
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

}

interface AggregatorV2V3Interface is AggregatorInterface, AggregatorV3Interface
{
}

/**
 * @title A trusted proxy for updating where current answers are read from
 * @notice This contract provides a consistent address for the
 * CurrentAnwerInterface but delegates where it reads from to the owner, who is
 * trusted to update it.
 */
contract AggregatorProxy is AggregatorV2V3Interface, Owned {

  struct Phase {
    uint16 id;
    AggregatorV2V3Interface aggregator;
  }
  Phase private currentPhase;
  AggregatorV2V3Interface public proposedAggregator;
  mapping(uint16 => AggregatorV2V3Interface) public phaseAggregators;

  uint256 constant private PHASE_OFFSET = 64;
  uint256 constant private PHASE_SIZE = 16;
  uint256 constant private MAX_ID = 2**(PHASE_OFFSET+PHASE_SIZE) - 1;

  constructor(address _aggregator) public Owned() {
    setAggregator(_aggregator);
  }

  /**
   * @notice Reads the current answer from aggregator delegated to.
   *
   * @dev #[deprecated] Use latestRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended latestRoundData
   * instead which includes better verification information.
   */
  function latestAnswer()
    public
    view
    virtual
    override
    returns (int256 answer)
  {
    return currentPhase.aggregator.latestAnswer();
  }

  /**
   * @notice Reads the last updated height from aggregator delegated to.
   *
   * @dev #[deprecated] Use latestRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended latestRoundData
   * instead which includes better verification information.
   */
  function latestTimestamp()
    public
    view
    virtual
    override
    returns (uint256 updatedAt)
  {
    return currentPhase.aggregator.latestTimestamp();
  }

  /**
   * @notice get past rounds answers
   * @param _roundId the answer number to retrieve the answer for
   *
   * @dev #[deprecated] Use getRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended getRoundData
   * instead which includes better verification information.
   */
  function getAnswer(uint256 _roundId)
    public
    view
    virtual
    override
    returns (int256 answer)
  {
    if (_roundId > MAX_ID) return 0;

    (uint16 phaseId, uint64 aggregatorRoundId) = parseIds(_roundId);
    AggregatorV2V3Interface aggregator = phaseAggregators[phaseId];
    if (address(aggregator) == address(0)) return 0;

    return aggregator.getAnswer(aggregatorRoundId);
  }

  /**
   * @notice get block timestamp when an answer was last updated
   * @param _roundId the answer number to retrieve the updated timestamp for
   *
   * @dev #[deprecated] Use getRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended getRoundData
   * instead which includes better verification information.
   */
  function getTimestamp(uint256 _roundId)
    public
    view
    virtual
    override
    returns (uint256 updatedAt)
  {
    if (_roundId > MAX_ID) return 0;

    (uint16 phaseId, uint64 aggregatorRoundId) = parseIds(_roundId);
    AggregatorV2V3Interface aggregator = phaseAggregators[phaseId];
    if (address(aggregator) == address(0)) return 0;

    return aggregator.getTimestamp(aggregatorRoundId);
  }

  /**
   * @notice get the latest completed round where the answer was updated. This
   * ID includes the proxy's phase, to make sure round IDs increase even when
   * switching to a newly deployed aggregator.
   *
   * @dev #[deprecated] Use latestRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended latestRoundData
   * instead which includes better verification information.
   */
  function latestRound()
    public
    view
    virtual
    override
    returns (uint256 roundId)
  {
    Phase memory phase = currentPhase; // cache storage reads
    return addPhase(phase.id, uint64(phase.aggregator.latestRound()));
  }

  /**
   * @notice get data about a round. Consumers are encouraged to check
   * that they're receiving fresh data by inspecting the updatedAt and
   * answeredInRound return values.
   * Note that different underlying implementations of AggregatorV3Interface
   * have slightly different semantics for some of the return values. Consumers
   * should determine what implementations they expect to receive
   * data from and validate that they can properly handle return data from all
   * of them.
   * @param _roundId the requested round ID as presented through the proxy, this
   * is made up of the aggregator's round ID with the phase ID encoded in the
   * two highest order bytes
   * @return roundId is the round ID from the aggregator for which the data was
   * retrieved combined with an phase to ensure that round IDs get larger as
   * time moves forward.
   * @return answer is the answer for the given round
   * @return startedAt is the timestamp when the round was started.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @return updatedAt is the timestamp when the round last was updated (i.e.
   * answer was last computed)
   * @return answeredInRound is the round ID of the round in which the answer
   * was computed.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @dev Note that answer and updatedAt may change between queries.
   */
  function getRoundData(uint80 _roundId)
    public
    view
    virtual
    override
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    )
  {
    (uint16 phaseId, uint64 aggregatorRoundId) = parseIds(_roundId);

    (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 ansIn
    ) = phaseAggregators[phaseId].getRoundData(aggregatorRoundId);

    return addPhaseIds(roundId, answer, startedAt, updatedAt, ansIn, phaseId);
  }

  /**
   * @notice get data about the latest round. Consumers are encouraged to check
   * that they're receiving fresh data by inspecting the updatedAt and
   * answeredInRound return values.
   * Note that different underlying implementations of AggregatorV3Interface
   * have slightly different semantics for some of the return values. Consumers
   * should determine what implementations they expect to receive
   * data from and validate that they can properly handle return data from all
   * of them.
   * @return roundId is the round ID from the aggregator for which the data was
   * retrieved combined with an phase to ensure that round IDs get larger as
   * time moves forward.
   * @return answer is the answer for the given round
   * @return startedAt is the timestamp when the round was started.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @return updatedAt is the timestamp when the round last was updated (i.e.
   * answer was last computed)
   * @return answeredInRound is the round ID of the round in which the answer
   * was computed.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @dev Note that answer and updatedAt may change between queries.
   */
  function latestRoundData()
    public
    view
    virtual
    override
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    )
  {
    Phase memory current = currentPhase; // cache storage reads

    (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 ansIn
    ) = current.aggregator.latestRoundData();

    return addPhaseIds(roundId, answer, startedAt, updatedAt, ansIn, current.id);
  }

  /**
   * @notice Used if an aggregator contract has been proposed.
   * @param _roundId the round ID to retrieve the round data for
   * @return roundId is the round ID for which data was retrieved
   * @return answer is the answer for the given round
   * @return startedAt is the timestamp when the round was started.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @return updatedAt is the timestamp when the round last was updated (i.e.
   * answer was last computed)
   * @return answeredInRound is the round ID of the round in which the answer
   * was computed.
  */
  function proposedGetRoundData(uint80 _roundId)
    public
    view
    virtual
    hasProposal()
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    )
  {
    return proposedAggregator.getRoundData(_roundId);
  }

  /**
   * @notice Used if an aggregator contract has been proposed.
   * @return roundId is the round ID for which data was retrieved
   * @return answer is the answer for the given round
   * @return startedAt is the timestamp when the round was started.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @return updatedAt is the timestamp when the round last was updated (i.e.
   * answer was last computed)
   * @return answeredInRound is the round ID of the round in which the answer
   * was computed.
  */
  function proposedLatestRoundData()
    public
    view
    virtual
    hasProposal()
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    )
  {
    return proposedAggregator.latestRoundData();
  }

  /**
   * @notice returns the current phase's aggregator address.
   */
  function aggregator()
    external
    view
    returns (address)
  {
    return address(currentPhase.aggregator);
  }

  /**
   * @notice returns the current phase's ID.
   */
  function phaseId()
    external
    view
    returns (uint16)
  {
    return currentPhase.id;
  }

  /**
   * @notice represents the number of decimals the aggregator responses represent.
   */
  function decimals()
    external
    view
    override
    returns (uint8)
  {
    return currentPhase.aggregator.decimals();
  }

  /**
   * @notice the version number representing the type of aggregator the proxy
   * points to.
   */
  function version()
    external
    view
    override
    returns (uint256)
  {
    return currentPhase.aggregator.version();
  }

  /**
   * @notice returns the description of the aggregator the proxy points to.
   */
  function description()
    external
    view
    override
    returns (string memory)
  {
    return currentPhase.aggregator.description();
  }

  /**
   * @notice Allows the owner to propose a new address for the aggregator
   * @param _aggregator The new address for the aggregator contract
   */
  function proposeAggregator(address _aggregator)
    external
    onlyOwner()
  {
    proposedAggregator = AggregatorV2V3Interface(_aggregator);
  }

  /**
   * @notice Allows the owner to confirm and change the address
   * to the proposed aggregator
   * @dev Reverts if the given address doesn't match what was previously
   * proposed
   * @param _aggregator The new address for the aggregator contract
   */
  function confirmAggregator(address _aggregator)
    external
    onlyOwner()
  {
    require(_aggregator == address(proposedAggregator), "Invalid proposed aggregator");
    delete proposedAggregator;
    setAggregator(_aggregator);
  }


  /*
   * Internal
   */

  function setAggregator(address _aggregator)
    internal
  {
    uint16 id = currentPhase.id + 1;
    currentPhase = Phase(id, AggregatorV2V3Interface(_aggregator));
    phaseAggregators[id] = AggregatorV2V3Interface(_aggregator);
  }

  function addPhase(
    uint16 _phase,
    uint64 _originalId
  )
    internal
    view
    returns (uint80)
  {
    return uint80(uint256(_phase) << PHASE_OFFSET | _originalId);
  }

  function parseIds(
    uint256 _roundId
  )
    internal
    view
    returns (uint16, uint64)
  {
    uint16 phaseId = uint16(_roundId >> PHASE_OFFSET);
    uint64 aggregatorRoundId = uint64(_roundId);

    return (phaseId, aggregatorRoundId);
  }

  function addPhaseIds(
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound,
      uint16 phaseId
  )
    internal
    view
    returns (uint80, int256, uint256, uint256, uint80)
  {
    return (
      addPhase(phaseId, uint64(roundId)),
      answer,
      startedAt,
      updatedAt,
      addPhase(phaseId, uint64(answeredInRound))
    );
  }

  /*
   * Modifiers
   */

  modifier hasProposal() {
    require(address(proposedAggregator) != address(0), "No proposed aggregator present");
    _;
  }

}

interface AccessControllerInterface {
  function hasAccess(address user, bytes calldata data) external view returns (bool);
}

/**
 * @title External Access Controlled Aggregator Proxy
 * @notice A trusted proxy for updating where current answers are read from
 * @notice This contract provides a consistent address for the
 * Aggregator and AggregatorV3Interface but delegates where it reads from to the owner, who is
 * trusted to update it.
 * @notice Only access enabled addresses are allowed to access getters for
 * aggregated answers and round information.
 */
contract EACAggregatorProxy is AggregatorProxy {

  AccessControllerInterface public accessController;

  constructor(
    address _aggregator,
    address _accessController
  )
    public
    AggregatorProxy(_aggregator)
  {
    setController(_accessController);
  }

  /**
   * @notice Allows the owner to update the accessController contract address.
   * @param _accessController The new address for the accessController contract
   */
  function setController(address _accessController)
    public
    onlyOwner()
  {
    accessController = AccessControllerInterface(_accessController);
  }

  /**
   * @notice Reads the current answer from aggregator delegated to.
   * @dev overridden function to add the checkAccess() modifier
   *
   * @dev #[deprecated] Use latestRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended latestRoundData
   * instead which includes better verification information.
   */
  function latestAnswer()
    public
    view
    override
    checkAccess()
    returns (int256)
  {
    return super.latestAnswer();
  }

  /**
   * @notice get the latest completed round where the answer was updated. This
   * ID includes the proxy's phase, to make sure round IDs increase even when
   * switching to a newly deployed aggregator.
   *
   * @dev #[deprecated] Use latestRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended latestRoundData
   * instead which includes better verification information.
   */
  function latestTimestamp()
    public
    view
    override
    checkAccess()
    returns (uint256)
  {
    return super.latestTimestamp();
  }

  /**
   * @notice get past rounds answers
   * @param _roundId the answer number to retrieve the answer for
   * @dev overridden function to add the checkAccess() modifier
   *
   * @dev #[deprecated] Use getRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended getRoundData
   * instead which includes better verification information.
   */
  function getAnswer(uint256 _roundId)
    public
    view
    override
    checkAccess()
    returns (int256)
  {
    return super.getAnswer(_roundId);
  }

  /**
   * @notice get block timestamp when an answer was last updated
   * @param _roundId the answer number to retrieve the updated timestamp for
   * @dev overridden function to add the checkAccess() modifier
   *
   * @dev #[deprecated] Use getRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended getRoundData
   * instead which includes better verification information.
   */
  function getTimestamp(uint256 _roundId)
    public
    view
    override
    checkAccess()
    returns (uint256)
  {
    return super.getTimestamp(_roundId);
  }

  /**
   * @notice get the latest completed round where the answer was updated
   * @dev overridden function to add the checkAccess() modifier
   *
   * @dev #[deprecated] Use latestRoundData instead. This does not error if no
   * answer has been reached, it will simply return 0. Either wait to point to
   * an already answered Aggregator or use the recommended latestRoundData
   * instead which includes better verification information.
   */
  function latestRound()
    public
    view
    override
    checkAccess()
    returns (uint256)
  {
    return super.latestRound();
  }

  /**
   * @notice get data about a round. Consumers are encouraged to check
   * that they're receiving fresh data by inspecting the updatedAt and
   * answeredInRound return values.
   * Note that different underlying implementations of AggregatorV3Interface
   * have slightly different semantics for some of the return values. Consumers
   * should determine what implementations they expect to receive
   * data from and validate that they can properly handle return data from all
   * of them.
   * @param _roundId the round ID to retrieve the round data for
   * @return roundId is the round ID from the aggregator for which the data was
   * retrieved combined with a phase to ensure that round IDs get larger as
   * time moves forward.
   * @return answer is the answer for the given round
   * @return startedAt is the timestamp when the round was started.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @return updatedAt is the timestamp when the round last was updated (i.e.
   * answer was last computed)
   * @return answeredInRound is the round ID of the round in which the answer
   * was computed.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @dev Note that answer and updatedAt may change between queries.
   */
  function getRoundData(uint80 _roundId)
    public
    view
    checkAccess()
    override
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    )
  {
    return super.getRoundData(_roundId);
  }

  /**
   * @notice get data about the latest round. Consumers are encouraged to check
   * that they're receiving fresh data by inspecting the updatedAt and
   * answeredInRound return values.
   * Note that different underlying implementations of AggregatorV3Interface
   * have slightly different semantics for some of the return values. Consumers
   * should determine what implementations they expect to receive
   * data from and validate that they can properly handle return data from all
   * of them.
   * @return roundId is the round ID from the aggregator for which the data was
   * retrieved combined with a phase to ensure that round IDs get larger as
   * time moves forward.
   * @return answer is the answer for the given round
   * @return startedAt is the timestamp when the round was started.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @return updatedAt is the timestamp when the round last was updated (i.e.
   * answer was last computed)
   * @return answeredInRound is the round ID of the round in which the answer
   * was computed.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @dev Note that answer and updatedAt may change between queries.
   */
  function latestRoundData()
    public
    view
    checkAccess()
    override
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    )
  {
    return super.latestRoundData();
  }

  /**
   * @notice Used if an aggregator contract has been proposed.
   * @param _roundId the round ID to retrieve the round data for
   * @return roundId is the round ID for which data was retrieved
   * @return answer is the answer for the given round
   * @return startedAt is the timestamp when the round was started.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @return updatedAt is the timestamp when the round last was updated (i.e.
   * answer was last computed)
   * @return answeredInRound is the round ID of the round in which the answer
   * was computed.
  */
  function proposedGetRoundData(uint80 _roundId)
    public
    view
    checkAccess()
    hasProposal()
    override
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    )
  {
    return super.proposedGetRoundData(_roundId);
  }

  /**
   * @notice Used if an aggregator contract has been proposed.
   * @return roundId is the round ID for which data was retrieved
   * @return answer is the answer for the given round
   * @return startedAt is the timestamp when the round was started.
   * (Only some AggregatorV3Interface implementations return meaningful values)
   * @return updatedAt is the timestamp when the round last was updated (i.e.
   * answer was last computed)
   * @return answeredInRound is the round ID of the round in which the answer
   * was computed.
  */
  function proposedLatestRoundData()
    public
    view
    checkAccess()
    hasProposal()
    override
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    )
  {
    return super.proposedLatestRoundData();
  }

  /**
   * @dev reverts if the caller does not have access by the accessController
   * contract or is the contract itself.
   */
  modifier checkAccess() {
    AccessControllerInterface ac = accessController;
    require(address(ac) == address(0) || ac.hasAccess(msg.sender, msg.data), "No access");
    _;
  }
}