// Vulnerability label: TD1
pragma solidity 0.5.11;


/**
 * @title SafeMath
 * @dev Math operations with safety checks that revert on error
 */
library SafeMath {

    /**
    * @dev Multiplies two numbers, reverts on overflow.
    */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b);

        return c;
    }

    /**
    * @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
    */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0); // Solidity only automatically asserts 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;
    }

    /**
    * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
    */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a);
        uint256 c = a - b;

        return c;
    }

    /**
    * @dev Adds two numbers, reverts on overflow.
    */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a);

        return c;
    }

    /**
    * @dev Divides two numbers and returns the remainder (unsigned integer modulo),
    * reverts when dividing by zero.
    */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0);
        return a % b;
    }
}


/**
 * @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 payable public owner;

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

    /**
     * @dev The Ownable constructor sets the original `owner` of the contract to the sender
     * account.
     */
    constructor () internal {
        owner = msg.sender;
        emit OwnershipTransferred(address(0), owner);
    }


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

    /**
     * @return true if `msg.sender` is the owner of the contract.
     */
    function isOwner() public view returns (bool) {
        return 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 payable newOwner) public onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function _transferOwnership(address payable newOwner) internal {
        require(newOwner != address(0));
        emit OwnershipTransferred(owner, newOwner);
        owner = newOwner;
    }
}


contract x2jpCredit is Ownable {
    using SafeMath for uint256;

    uint public depositAmount;
    uint public minCreditAmount;
    uint public currentPaymentIndex;

    uint public depPercent;
    uint public ownerPercent;
    uint public jpPercent;
    uint public creditPercent;

    uint public lastWinnerPeriod;
    uint public jackpotAmount;

    uint public amountRaised;

    struct Deposit {
        address payable depositor;
        uint amount;
        uint payout;
        uint paymentTime;
        uint payoutTime;
    }

    // list of all deposites
    Deposit[] public deposits;
    // list of user deposits
    mapping (address => uint[]) public depositors;

    struct Credit {
        address payable creditor;
        uint amount;
        uint payout;
        uint paid;
    }

    struct CreditPayout {
        address creditor;
        uint payout;
        uint paymentTime;
    }

    Credit[] public credits;
    CreditPayout[] public creditPayouts;

    mapping (address => uint[]) public creditors;
    uint public currentCreditIndex;

    mapping(address => address payable) public userReferral;

    bool public paused;
    uint public betPeriod;
    uint public lastPayoutTime;
    uint public lastDepId;

    struct Jack {
        address winner;
        uint amount;
        uint time;
    }

    Jack public lastJack;

    event OnDepositReceived(address investorAddress, uint value);
    event OnPaymentSent(address investorAddress, uint value);
    event OnCreditReceived(address investorAddress, uint value);
    event OnCreditPaid(address investorAddress, uint value);
    event OnJackpotAdd(uint value);

    constructor () public {
        depositAmount = 10000000000000000; // 0.01 eth
        minCreditAmount = 10000000000000000;
        depPercent = 130;
        ownerPercent = 10;
        jpPercent = 10;
        creditPercent = 120;
        lastWinnerPeriod = 1800;
        betPeriod = 1800;
    }


    function () external payable {
        if (msg.value > 0) {
            uint betsCount = msg.value.div(depositAmount);
            uint weiAmount =  depositAmount.mul(betsCount);
            uint _diff = msg.value.sub(weiAmount);

            if (_diff > 0) {
                msg.sender.transfer(_diff);
            }

            payoutJackpot(weiAmount);
            if (!paused) {
                makeDeposit(weiAmount, betsCount);
            } else {
                msg.sender.transfer(weiAmount);
            }
        } else {
            payDeposits(0);
            payoutJackpot(0);
        }
    }


    function makeDeposit(uint weiAmount, uint betsCount) internal {
        require(weiAmount >= depositAmount);
        require(!paused);
        //        payout();

        amountRaised = amountRaised.add(weiAmount);
        owner.transfer(weiAmount.mul(ownerPercent).div(100));

        address payable referrer = bytesToAddress(msg.data);
        if (referrer != msg.sender) userReferral[msg.sender] = referrer;

        if (userReferral[msg.sender] != address(0)) {
            userReferral[msg.sender].transfer(weiAmount.mul(5).div(100));
        }

        if (credits.length > 0 && currentCreditIndex < credits.length) {
            uint val = weiAmount.mul(jpPercent).div(100);

            for (uint i = currentCreditIndex; i < credits.length && val > 0; i++) {
                if (credits[i].payout > credits[i].paid) {

                    uint payout;

                    if (credits[i].paid.add(val) <= credits[i].payout) {
                        payout = val;
                        val = 0;
                        credits[i].creditor.send(payout);
                        credits[i].paid = credits[i].paid.add(payout);
                        CreditPayout memory newCreditPayout = CreditPayout(credits[i].creditor, payout, now);
                        creditPayouts.push(newCreditPayout);

                    } else {
                        payout = credits[i].payout.sub(credits[i].paid);
                        val = val.sub(payout);
                        credits[i].creditor.send(payout);
                        credits[i].paid = credits[i].paid.add(payout);
                        CreditPayout memory newCreditPayout = CreditPayout(credits[i].creditor, payout, now);
                        creditPayouts.push(newCreditPayout);
                    }

                    if (credits[i].paid == credits[i].payout) {
                        currentCreditIndex += 1;
                    }

                    emit OnCreditPaid(credits[i].creditor, payout);
                }

            }

            if (val > 0) {
                jackpotAmount = jackpotAmount.add(val);
                emit OnJackpotAdd(val);
            }

        } else {
            uint jpVal = weiAmount.mul(jpPercent).div(100);
            jackpotAmount = jackpotAmount.add(jpVal);
            emit OnJackpotAdd(jpVal);
        }



        for (uint i = 0; i < betsCount; i++) {
            uint paymentTime = now + i * betPeriod;
            Deposit memory newDeposit = Deposit(msg.sender, depositAmount, depositAmount.mul(depPercent).div(100), paymentTime, 0);
            deposits.push(newDeposit);
            depositors[msg.sender].push(deposits.length - 1);
            emit OnDepositReceived(msg.sender, depositAmount);

            if (paymentTime > lastPayoutTime) {
                lastPayoutTime = paymentTime;
                lastDepId = deposits.length - 1;
            }
        }

        payDeposits(0);
    }


    function payDeposits(uint _iterations) public{
        _iterations = _iterations == 0 ? deposits.length: _iterations;

        bool changePaymentIndex = true;

        for (uint i = currentPaymentIndex;
            i < _iterations && address(this).balance.sub(jackpotAmount) >= deposits[i].payout;
            i++)
        {
            if (deposits[i].paymentTime <= now && deposits[i].payoutTime == 0) {
                deposits[i].payoutTime = now;
                deposits[i].depositor.send(deposits[i].payout);
                emit OnPaymentSent(deposits[i].depositor, deposits[i].payout);
            } else {
                changePaymentIndex = false;
            }

            if (changePaymentIndex) currentPaymentIndex += 1;
        }
    }


    function payoutJackpot(uint weiAmount) internal {
        if (deposits.length > 0 && lastPayoutTime + lastWinnerPeriod < now && jackpotAmount > 0) {
            uint val = jackpotAmount;
            jackpotAmount = 0;

            deposits[lastDepId].payoutTime = now;
            deposits[lastDepId].payout = val;
            deposits[lastDepId].depositor.send(val);
            emit OnPaymentSent(deposits[lastDepId].depositor, val);
            currentPaymentIndex = deposits.length; //if need pay jp + dep set to deposits.length -1
            owner.transfer(address(this).balance - weiAmount);

            lastJack.winner =  deposits[lastDepId].depositor;
            lastJack.amount = val;
            lastJack.time = now;
            lastDepId = 0;
            paused = true;
        }
    }


    function getDepositsCount() public view returns (uint) {
        return deposits.length;
    }

    function lastDepositId() public view returns (uint) {
        return deposits.length - 1;
    }

    function getDeposit(uint _id) public view returns (address, uint, uint, uint, uint){
        return (deposits[_id].depositor, deposits[_id].amount, deposits[_id].payout,
        deposits[_id].paymentTime, deposits[_id].payoutTime);
    }

    function getUserDepositsCount(address depositor) public view returns (uint) {
        return depositors[depositor].length;
    }

    function getUserDeposit(address depositor, uint depositNumber) public view returns(uint, uint, uint, uint, bool) {
        bool nulled;
        if (deposits[depositors[depositor][depositNumber]].payoutTime == 0
        && depositors[depositor][depositNumber] < currentPaymentIndex) nulled = true;

        return (deposits[depositors[depositor][depositNumber]].amount,
        deposits[depositors[depositor][depositNumber]].payout,
        deposits[depositors[depositor][depositNumber]].paymentTime,
        deposits[depositors[depositor][depositNumber]].payoutTime,
        nulled);
    }


    function getUserCreditsCount(address creditor) public view returns (uint) {
        return creditors[creditor].length;
    }

    function getUserCredit(address creditor, uint creditNumber) public view returns(uint, uint, uint) {
        return (credits[creditors[creditor][creditNumber]].amount,
        credits[creditors[creditor][creditNumber]].payout,
        credits[creditors[creditor][creditNumber]].paid);
    }

    // lastIndex from the end of payments lest (0 - last payment), returns: address of depositor, payment time, payment amount
    function getPayment(uint lastIndex) public view returns (address, uint, uint, uint, uint) {
        uint depositIndex = currentPaymentIndex.sub(lastIndex + 1);

        return (deposits[depositIndex].depositor,
        deposits[depositIndex].amount,
        deposits[depositIndex].payout,
        deposits[depositIndex].paymentTime,
        deposits[depositIndex].payoutTime);
    }


    function getLastTenPayments() public view returns (
        address[] memory dprs, uint[] memory paymentTime, uint[] memory payouts, uint )
    {

        dprs = new address[](10);
        paymentTime = new uint[](10);
        payouts = new uint[](10);

        uint counter;
        for (uint i = 0; counter < 10 && currentPaymentIndex - i > 0; i++) {
            uint depositIndex = currentPaymentIndex.sub(i + 1);
            if (deposits[depositIndex].payoutTime != 0) {
                dprs[i] = deposits[depositIndex].depositor;
                paymentTime[i] = deposits[depositIndex].paymentTime;
                payouts[i] = deposits[depositIndex].payout;
                counter++;
            }
        }

        return (dprs, paymentTime, payouts, currentPaymentIndex);
    }

    function getNextTenPayouts() public view returns (address[] memory dprs, uint[] memory payouts, uint[] memory payoutsTime, uint) {
        dprs = new address[](300);
        payouts = new uint[](300);
        payoutsTime = new uint[](300);
        for (uint i = 0; i < 300 && currentPaymentIndex + i < deposits.length; i++) {
            dprs[i] = deposits[currentPaymentIndex + i].depositor;
            payouts[i] = deposits[currentPaymentIndex + i].payout;
            payoutsTime[i] = deposits[currentPaymentIndex + i].paymentTime;
        }

        return (dprs, payouts, payoutsTime, currentPaymentIndex);
    }

    function getLastTenCreditPayments() public view returns (
        address[] memory crds, uint[] memory paymentTime, uint[] memory payouts, uint )
    {

        crds = new address[](10);
        paymentTime = new uint[](10);
        payouts = new uint[](10);


        for (uint i = 0; i < 10 && creditPayouts.length - i > 0 ; i++) {
            uint payoutIndex = creditPayouts.length - (i + 1);
            crds[i] = creditPayouts[payoutIndex].creditor;
            paymentTime[i] = creditPayouts[payoutIndex].paymentTime;
            payouts[i] = creditPayouts[payoutIndex].payout;
        }

        return (crds, paymentTime, payouts, creditPayouts.length);
    }

    function getNextTenCreditPayouts() public view returns (address[] memory crds, uint[] memory crdsAmounts, uint[] memory paid, uint[] memory payouts, uint) {
        crds = new address[](10);
        crdsAmounts = new uint[](10);
        paid = new uint[](10);
        payouts = new uint[](10);
        for (uint i = 0; i < 10 && currentCreditIndex + i < credits.length; i++) {
            crds[i] = credits[currentCreditIndex + i].creditor;
            crdsAmounts[i] = credits[currentCreditIndex + i].amount;
            paid[i] = credits[currentCreditIndex + i].paid;
            payouts[i] = credits[currentCreditIndex + i].payout;
        }

        return (crds, crdsAmounts, paid, payouts, currentCreditIndex);
    }


    function getLastJack() public view returns (address, uint, uint) {
        return (lastJack.winner, lastJack.amount, lastJack.time);
    }

    //_interval in seconds
    function setLastWinnerPeriod(uint _interval) onlyOwner public {
        require(_interval > 0);
        lastWinnerPeriod = _interval;
    }


    function addJP(address payable _creditor) public payable returns (bool) {
        require(msg.value >= minCreditAmount);
        uint op = msg.value.mul(ownerPercent).div(100);
        owner.transfer(op);

        jackpotAmount = jackpotAmount.add(msg.value.sub(op));
        Credit memory newCredit = Credit(_creditor, msg.value, msg.value.mul(creditPercent).div(100), 0);
        credits.push(newCredit);

        creditors[_creditor].push(credits.length - 1);
        emit OnCreditReceived(_creditor, msg.value);

        return true;
    }



    function bytesToAddress(bytes memory bys) private pure returns (address payable addr) {
        assembly {
            addr := mload(add(bys, 20))
        }
    }

    function start() onlyOwner public {
        paused = false;
    }
}


contract addJp {
    x2jpCredit public gameContract;

    constructor(address payable _gameContract) public {
        gameContract = x2jpCredit(_gameContract);
    }

    function() external payable {
        if (msg.value > 0) {
            require(gameContract.addJP.value(msg.value)(msg.sender));
        }
    }
}