// File: contracts/MoPAr_NFC2022.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;

import "@openzeppelin/contracts/access/Ownable.sol";
import "./Base64.sol";

interface IMoPArMetadata {
    function tokenURI(uint256 tokenId) external view returns (string memory);
    function beforeTokenTransfer(address from, address to, uint256 tokenId) external;
}

interface IMoPAr {
    function getCollectionId(uint256 tokenId) external view returns (uint256);
    function ownerOf(uint256 tokenId) external view returns (address);
}

contract MoPAr_NFC2022 is Ownable, IMoPArMetadata {
    IMoPAr private mopar;

    string private _uriPrefix;             // uri prefix
    string private _baseURI;
    uint256 private constant SEPARATOR = 10**4;
    uint16 public collectionId;
    address public mintingWallet;
    //hardcode the starting token id
    //on tokenURI, do an of owner check for all three
    //if all three are owned show, json with single NFT AND triptych NFT
    //else show json with single NFT


    constructor(string memory initURIPrefix_, string memory initBaseURI_, address moparAddress_, address mintingWallet_)
    Ownable() 
    {
        _uriPrefix = initURIPrefix_;
        _baseURI = initBaseURI_;
        mintingWallet = mintingWallet_;
        mopar = IMoPAr(moparAddress_);
    }

    function tokenURI(uint256 tokenId) override external view returns (string memory) {
        //check if all three are owned
        //if all three are owned show, json with single NFT AND triptych NFT
        //else show json with single NFT
        if (mopar.ownerOf(SEPARATOR * collectionId) != mintingWallet && mopar.ownerOf(SEPARATOR * collectionId + 1) != mintingWallet && mopar.ownerOf(SEPARATOR * collectionId + 2) != mintingWallet) {
            return string(abi.encodePacked(_baseURI, _toString(tokenId), "-state1.json"));
        } else {
            return string(abi.encodePacked(_baseURI, _toString(tokenId), "-state0.json"));
        }
    }

    function setMintingWallet(address mintingWallet_) external onlyOwner {
        mintingWallet = mintingWallet_;
    }
    function setURIPrefix(string calldata newURIPrefix) external onlyOwner {
        _uriPrefix = newURIPrefix;
    }

    function setBaseURI(string calldata newBaseURI) external onlyOwner {
        _baseURI = newBaseURI;
    }

    function setCollectionId(uint16 newCollectionId_) external onlyOwner {
        collectionId = newCollectionId_;
    }
    function beforeTokenTransfer(address, address, uint256 tokenId) override external {
    }
    function _toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    } 
}

// File: @openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

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

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

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

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: contracts/Base64.sol



/// SPDX-License-Identifier: MIT
/// @title Base64
/// @notice Provides a function for encoding some bytes in base64
/// @author Brecht Devos <brecht@loopring.org>

pragma solidity ^0.8.0;

library Base64 {
    bytes internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    /// @notice Encodes some bytes to the base64 representation
    function encode(bytes memory data) internal pure returns (string memory) {
        uint256 len = data.length;
        if (len == 0) return "";

        // multiply by 4/3 rounded up
        uint256 encodedLen = 4 * ((len + 2) / 3);

        // Add some extra buffer at the end
        bytes memory result = new bytes(encodedLen + 32);

        bytes memory table = TABLE;

        assembly {
            let tablePtr := add(table, 1)
            let resultPtr := add(result, 32)

            for {
                let i := 0
            } lt(i, len) {

            } {
                i := add(i, 3)
                let input := and(mload(add(data, i)), 0xffffff)

                let out := mload(add(tablePtr, and(shr(18, input), 0x3F)))
                out := shl(8, out)
                out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF))
                out := shl(8, out)
                out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF))
                out := shl(8, out)
                out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF))
                out := shl(224, out)

                mstore(resultPtr, out)

                resultPtr := add(resultPtr, 4)
            }

            switch mod(len, 3)
            case 1 {
                mstore(sub(resultPtr, 2), shl(240, 0x3d3d))
            }
            case 2 {
                mstore(sub(resultPtr, 1), shl(248, 0x3d))
            }

            mstore(result, encodedLen)
        }

        return string(result);
    }
}
// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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