// File: contracts/PBAB/crypto-citizens/GenArt721Minter_CryptoCitizens.sol



pragma solidity ^0.5.0;

import "../../libs/SafeMath.sol";
import "../../libs/Strings.sol";

import "../../interfaces/IGenArt721CoreV2.sol";

interface ERC20 {
    function balanceOf(address _owner) external view returns (uint256 balance);

    function transferFrom(
        address _from,
        address _to,
        uint256 _value
    ) external returns (bool success);

    function allowance(address _owner, address _spender)
        external
        view
        returns (uint256 remaining);
}

interface BonusContract {
    function triggerBonus(address _to) external returns (bool);

    function bonusIsActive() external view returns (bool);
}

contract GenArt721Minter_CryptoCitizens {
    using SafeMath for uint256;

    IGenArt721CoreV2 public genArtCoreContract;

    uint256 constant ONE_MILLION = 1_000_000;

    address payable public ownerAddress;
    uint256 public ownerPercentage;

    mapping(uint256 => bool) public projectIdToBonus;
    mapping(uint256 => address) public projectIdToBonusContractAddress;
    mapping(uint256 => bool) public contractFilterProject;
    mapping(address => mapping(uint256 => uint256)) public projectMintCounter;
    mapping(uint256 => uint256) public projectMintLimit;
    mapping(uint256 => bool) public projectMaxHasBeenInvoked;
    mapping(uint256 => uint256) public projectMaxInvocations;

    constructor(address _genArt721Address) public {
        genArtCoreContract = IGenArt721CoreV2(_genArt721Address);
    }

    function getYourBalanceOfProjectERC20(uint256 _projectId)
        public
        view
        returns (uint256)
    {
        uint256 balance = ERC20(
            genArtCoreContract.projectIdToCurrencyAddress(_projectId)
        ).balanceOf(msg.sender);
        return balance;
    }

    function checkYourAllowanceOfProjectERC20(uint256 _projectId)
        public
        view
        returns (uint256)
    {
        uint256 remaining = ERC20(
            genArtCoreContract.projectIdToCurrencyAddress(_projectId)
        ).allowance(msg.sender, address(this));
        return remaining;
    }

    function setProjectMintLimit(uint256 _projectId, uint8 _limit) public {
        require(
            genArtCoreContract.isWhitelisted(msg.sender),
            "can only be set by admin"
        );
        projectMintLimit[_projectId] = _limit;
    }

    function setProjectMaxInvocations(uint256 _projectId) public {
        require(
            genArtCoreContract.isWhitelisted(msg.sender),
            "can only be set by admin"
        );
        uint256 maxInvocations;
        uint256 invocations;
        (, , invocations, maxInvocations, , , , , ) = genArtCoreContract
            .projectTokenInfo(_projectId);
        projectMaxInvocations[_projectId] = maxInvocations;
        if (invocations < maxInvocations) {
            projectMaxHasBeenInvoked[_projectId] = false;
        }
    }

    function setOwnerAddress(address payable _ownerAddress) public {
        require(
            genArtCoreContract.isWhitelisted(msg.sender),
            "can only be set by admin"
        );
        ownerAddress = _ownerAddress;
    }

    function setOwnerPercentage(uint256 _ownerPercentage) public {
        require(
            genArtCoreContract.isWhitelisted(msg.sender),
            "can only be set by admin"
        );
        ownerPercentage = _ownerPercentage;
    }

    function toggleContractFilter(uint256 _projectId) public {
        require(
            genArtCoreContract.isWhitelisted(msg.sender),
            "can only be set by admin"
        );
        contractFilterProject[_projectId] = !contractFilterProject[_projectId];
    }

    function artistToggleBonus(uint256 _projectId) public {
        require(
            msg.sender ==
                genArtCoreContract.projectIdToArtistAddress(_projectId),
            "can only be set by artist"
        );
        projectIdToBonus[_projectId] = !projectIdToBonus[_projectId];
    }

    function artistSetBonusContractAddress(
        uint256 _projectId,
        address _bonusContractAddress
    ) public {
        require(
            msg.sender ==
                genArtCoreContract.projectIdToArtistAddress(_projectId),
            "can only be set by artist"
        );
        projectIdToBonusContractAddress[_projectId] = _bonusContractAddress;
    }

    function purchase(uint256 _projectId)
        public
        payable
        returns (uint256 _tokenId)
    {
        return purchaseTo(msg.sender, _projectId);
    }

    // Remove `public`` and `payable`` to prevent public use
    // of the `purchaseTo`` function.
    function purchaseTo(address _to, uint256 _projectId)
        public
        payable
        returns (uint256 _tokenId)
    {
        require(
            !projectMaxHasBeenInvoked[_projectId],
            "Maximum number of invocations reached"
        );
        if (
            keccak256(
                abi.encodePacked(
                    genArtCoreContract.projectIdToCurrencySymbol(_projectId)
                )
            ) != keccak256(abi.encodePacked("ETH"))
        ) {
            require(
                msg.value == 0,
                "this project accepts a different currency and cannot accept ETH"
            );
            require(
                ERC20(genArtCoreContract.projectIdToCurrencyAddress(_projectId))
                    .allowance(msg.sender, address(this)) >=
                    genArtCoreContract.projectIdToPricePerTokenInWei(
                        _projectId
                    ),
                "Insufficient Funds Approved for TX"
            );
            require(
                ERC20(genArtCoreContract.projectIdToCurrencyAddress(_projectId))
                    .balanceOf(msg.sender) >=
                    genArtCoreContract.projectIdToPricePerTokenInWei(
                        _projectId
                    ),
                "Insufficient balance."
            );
            _splitFundsERC20(_projectId);
        } else {
            require(
                msg.value >=
                    genArtCoreContract.projectIdToPricePerTokenInWei(
                        _projectId
                    ),
                "Must send minimum value to mint!"
            );
            _splitFundsETH(_projectId);
        }

        // if contract filter is active prevent calls from another contract
        if (contractFilterProject[_projectId])
            require(msg.sender == tx.origin, "No Contract Buys");

        // limit mints per address by project
        if (projectMintLimit[_projectId] > 0) {
            require(
                projectMintCounter[msg.sender][_projectId] <
                    projectMintLimit[_projectId],
                "Reached minting limit"
            );
            projectMintCounter[msg.sender][_projectId]++;
        }

        uint256 tokenId = genArtCoreContract.mint(_to, _projectId, msg.sender);

        // What if this overflows, since default value of uint256 is 0?
        // That is intended, so that by default the minter allows infinite
        // transactions, allowing the `genArtCoreContract` to stop minting
        // `uint256 tokenInvocation = tokenId % ONE_MILLION;`
        if (tokenId % ONE_MILLION == projectMaxInvocations[_projectId] - 1) {
            projectMaxHasBeenInvoked[_projectId] = true;
        }

        if (projectIdToBonus[_projectId]) {
            require(
                BonusContract(projectIdToBonusContractAddress[_projectId])
                    .bonusIsActive(),
                "bonus must be active"
            );
            BonusContract(projectIdToBonusContractAddress[_projectId])
                .triggerBonus(msg.sender);
        }

        return tokenId;
    }

    function _splitFundsETH(uint256 _projectId) internal {
        if (msg.value > 0) {
            uint256 pricePerTokenInWei = genArtCoreContract
                .projectIdToPricePerTokenInWei(_projectId);
            uint256 refund = msg.value.sub(
                genArtCoreContract.projectIdToPricePerTokenInWei(_projectId)
            );
            if (refund > 0) {
                msg.sender.transfer(refund);
            }
            uint256 renderProviderAmount = pricePerTokenInWei.div(100).mul(
                genArtCoreContract.renderProviderPercentage()
            );
            if (renderProviderAmount > 0) {
                genArtCoreContract.renderProviderAddress().transfer(
                    renderProviderAmount
                );
            }

            uint256 remainingFunds = pricePerTokenInWei.sub(
                renderProviderAmount
            );

            uint256 ownerFunds = remainingFunds.div(100).mul(ownerPercentage);
            if (ownerFunds > 0) {
                ownerAddress.transfer(ownerFunds);
            }

            uint256 projectFunds = pricePerTokenInWei
                .sub(renderProviderAmount)
                .sub(ownerFunds);
            uint256 additionalPayeeAmount;
            if (
                genArtCoreContract.projectIdToAdditionalPayeePercentage(
                    _projectId
                ) > 0
            ) {
                additionalPayeeAmount = projectFunds.div(100).mul(
                    genArtCoreContract.projectIdToAdditionalPayeePercentage(
                        _projectId
                    )
                );
                if (additionalPayeeAmount > 0) {
                    genArtCoreContract
                        .projectIdToAdditionalPayee(_projectId)
                        .transfer(additionalPayeeAmount);
                }
            }
            uint256 creatorFunds = projectFunds.sub(additionalPayeeAmount);
            if (creatorFunds > 0) {
                genArtCoreContract
                    .projectIdToArtistAddress(_projectId)
                    .transfer(creatorFunds);
            }
        }
    }

    function _splitFundsERC20(uint256 _projectId) internal {
        uint256 pricePerTokenInWei = genArtCoreContract
            .projectIdToPricePerTokenInWei(_projectId);
        uint256 renderProviderAmount = pricePerTokenInWei.div(100).mul(
            genArtCoreContract.renderProviderPercentage()
        );
        if (renderProviderAmount > 0) {
            ERC20(genArtCoreContract.projectIdToCurrencyAddress(_projectId))
                .transferFrom(
                    msg.sender,
                    genArtCoreContract.renderProviderAddress(),
                    renderProviderAmount
                );
        }
        uint256 remainingFunds = pricePerTokenInWei.sub(renderProviderAmount);

        uint256 ownerFunds = remainingFunds.div(100).mul(ownerPercentage);
        if (ownerFunds > 0) {
            ERC20(genArtCoreContract.projectIdToCurrencyAddress(_projectId))
                .transferFrom(msg.sender, ownerAddress, ownerFunds);
        }

        uint256 projectFunds = pricePerTokenInWei.sub(renderProviderAmount).sub(
            ownerFunds
        );
        uint256 additionalPayeeAmount;
        if (
            genArtCoreContract.projectIdToAdditionalPayeePercentage(
                _projectId
            ) > 0
        ) {
            additionalPayeeAmount = projectFunds.div(100).mul(
                genArtCoreContract.projectIdToAdditionalPayeePercentage(
                    _projectId
                )
            );
            if (additionalPayeeAmount > 0) {
                ERC20(genArtCoreContract.projectIdToCurrencyAddress(_projectId))
                    .transferFrom(
                        msg.sender,
                        genArtCoreContract.projectIdToAdditionalPayee(
                            _projectId
                        ),
                        additionalPayeeAmount
                    );
            }
        }
        uint256 creatorFunds = projectFunds.sub(additionalPayeeAmount);
        if (creatorFunds > 0) {
            ERC20(genArtCoreContract.projectIdToCurrencyAddress(_projectId))
                .transferFrom(
                    msg.sender,
                    genArtCoreContract.projectIdToArtistAddress(_projectId),
                    creatorFunds
                );
        }
    }
}

// File: contracts/libs/SafeMath.sol



// File: openzeppelin-solidity/contracts/math/SafeMath.sol

pragma solidity ^0.5.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

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

        return c;
    }

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

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, "SafeMath: division by zero");
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }
}

// File: contracts/libs/Strings.sol



// File: contracts/Strings.sol

pragma solidity ^0.5.0;

//https://github.com/oraclize/ethereum-api/blob/master/oraclizeAPI_0.5.sol
library Strings {
    function strConcat(string memory _a, string memory _b)
        internal
        pure
        returns (string memory _concatenatedString)
    {
        return strConcat(_a, _b, "", "", "");
    }

    function strConcat(
        string memory _a,
        string memory _b,
        string memory _c
    ) internal pure returns (string memory _concatenatedString) {
        return strConcat(_a, _b, _c, "", "");
    }

    function strConcat(
        string memory _a,
        string memory _b,
        string memory _c,
        string memory _d
    ) internal pure returns (string memory _concatenatedString) {
        return strConcat(_a, _b, _c, _d, "");
    }

    function strConcat(
        string memory _a,
        string memory _b,
        string memory _c,
        string memory _d,
        string memory _e
    ) internal pure returns (string memory _concatenatedString) {
        bytes memory _ba = bytes(_a);
        bytes memory _bb = bytes(_b);
        bytes memory _bc = bytes(_c);
        bytes memory _bd = bytes(_d);
        bytes memory _be = bytes(_e);
        string memory abcde = new string(
            _ba.length + _bb.length + _bc.length + _bd.length + _be.length
        );
        bytes memory babcde = bytes(abcde);
        uint256 k = 0;
        uint256 i = 0;
        for (i = 0; i < _ba.length; i++) {
            babcde[k++] = _ba[i];
        }
        for (i = 0; i < _bb.length; i++) {
            babcde[k++] = _bb[i];
        }
        for (i = 0; i < _bc.length; i++) {
            babcde[k++] = _bc[i];
        }
        for (i = 0; i < _bd.length; i++) {
            babcde[k++] = _bd[i];
        }
        for (i = 0; i < _be.length; i++) {
            babcde[k++] = _be[i];
        }
        return string(babcde);
    }

    function uint2str(uint256 _i)
        internal
        pure
        returns (string memory _uintAsString)
    {
        if (_i == 0) {
            return "0";
        }
        uint256 j = _i;
        uint256 len;
        while (j != 0) {
            len++;
            j /= 10;
        }
        bytes memory bstr = new bytes(len);
        uint256 k = len - 1;
        while (_i != 0) {
            bstr[k--] = bytes1(uint8(48 + (_i % 10)));
            _i /= 10;
        }
        return string(bstr);
    }
}

// File: contracts/interfaces/IGenArt721CoreV2.sol



pragma solidity ^0.5.0;

interface IGenArt721CoreV2 {
    function isWhitelisted(address sender) external view returns (bool);

    function projectIdToCurrencySymbol(uint256 _projectId)
        external
        view
        returns (string memory);

    function projectIdToCurrencyAddress(uint256 _projectId)
        external
        view
        returns (address);

    function projectIdToArtistAddress(uint256 _projectId)
        external
        view
        returns (address payable);

    function projectIdToPricePerTokenInWei(uint256 _projectId)
        external
        view
        returns (uint256);

    function projectIdToAdditionalPayee(uint256 _projectId)
        external
        view
        returns (address payable);

    function projectIdToAdditionalPayeePercentage(uint256 _projectId)
        external
        view
        returns (uint256);

    function projectTokenInfo(uint256 _projectId)
        external
        view
        returns (
            address,
            uint256,
            uint256,
            uint256,
            bool,
            address,
            uint256,
            string memory,
            address
        );

    function renderProviderAddress() external view returns (address payable);

    function renderProviderPercentage() external view returns (uint256);

    function mint(
        address _to,
        uint256 _projectId,
        address _by
    ) external returns (uint256 tokenId);
}