contract BDERC1155Tradable is ERC1155PresetMinterPauser, Ownable {
    using Strings for string;

    address proxyRegistryAddress;
    uint256 private _currentTokenID = 0;
    mapping(uint256 => address) public creators;
    mapping(uint256 => uint256) public tokenSupply;
    // Contract name
    string public name;
    // Contract symbol
    string public symbol;
    //Metadata URI (for backwards compat with old code, overrides URI functionality from openzeppelin)
    string public baseMetadataURI;

    /**
     * @dev Require msg.sender to be the creator of the token id
     */
    modifier creatorOnly(uint256 _id) {
        require(
            creators[_id] == msg.sender,
            "ERC1155Tradable#creatorOnly: ONLY_CREATOR_ALLOWED"
        );
        _;
    }

    /**
     * @dev Require msg.sender to own more than 0 of the token id
     */
    modifier ownersOnly(uint256 _id) {
        require(
            balanceOf(msg.sender, _id) > 0,
            "ERC1155Tradable#ownersOnly: ONLY_OWNERS_ALLOWED"
        );
        _;
    }

    constructor(
        string memory _name,
        string memory _symbol,
        address _proxyRegistryAddress,
        string memory _metadataURI
    ) ERC1155PresetMinterPauser(_metadataURI) {
        name = _name;
        symbol = _symbol;
        proxyRegistryAddress = _proxyRegistryAddress;
        _setBaseMetadataURI(_metadataURI);
    }

    function uri(uint256 _id) public view override returns (string memory) {
        require(_exists(_id), "ERC721Tradable#uri: NONEXISTENT_TOKEN");
        return string(abi.encodePacked(baseMetadataURI, Strings.toString(_id)));
    }

    /**
     * @dev Returns the total quantity for a token ID
     * @param _id uint256 ID of the token to query
     * @return amount of token in existence
     */
    function totalSupply(uint256 _id) public view returns (uint256) {
        return tokenSupply[_id];
    }

    function _setBaseMetadataURI(string memory _newBaseMetadataURI) internal {
        baseMetadataURI = _newBaseMetadataURI;
    }

    /**
     * @dev Will update the base URL of token's URI
     * @param _newBaseMetadataURI New base URL of token's URI
     */
    function setBaseMetadataURI(string memory _newBaseMetadataURI)
        public
        onlyOwner
    {
        _setBaseMetadataURI(_newBaseMetadataURI);
    }

    /**
     * @dev Creates a new token type and assigns _initialSupply to an address
     * NOTE: remove onlyOwner if you want third parties to create new tokens on your contract (which may change your IDs)
     * @param _initialOwner address of the first owner of the token
     * @param _initialSupply amount to supply the first owner
     * @param _uri Optional URI for this token type
     * @param _data Data to pass if receiver is contract
     * @return The newly created token ID
     */
    function create(
        address _initialOwner,
        uint256 _initialSupply,
        string calldata _uri,
        bytes calldata _data
    ) external onlyOwner returns (uint256) {
        uint256 _id = _getNextTokenID();
        _incrementTokenTypeId();
        creators[_id] = msg.sender;

        if (bytes(_uri).length > 0) {
            emit URI(_uri, _id);
        }

        _mint(_initialOwner, _id, _initialSupply, _data);
        tokenSupply[_id] = _initialSupply;
        return _id;
    }

    /**
     * @dev Mints some amount of tokens to an address
     * @param _to          Address of the future owner of the token
     * @param _id          Token ID to mint
     * @param _quantity    Amount of tokens to mint
     * @param _data        Data to pass if receiver is contract
     */
    function mint(
        address _to,
        uint256 _id,
        uint256 _quantity,
        bytes memory _data
    ) public override creatorOnly(_id) {
        _mint(_to, _id, _quantity, _data);
        tokenSupply[_id] = tokenSupply[_id] + _quantity;
    }

    /**
     * @dev Mint tokens for each id in _ids
     * @param _to          The address to mint tokens to
     * @param _ids         Array of ids to mint
     * @param _quantities  Array of amounts of tokens to mint per id
     * @param _data        Data to pass if receiver is contract
     */
    function batchMint(
        address _to,
        uint256[] memory _ids,
        uint256[] memory _quantities,
        bytes memory _data
    ) public {
        for (uint256 i = 0; i < _ids.length; i++) {
            uint256 _id = _ids[i];
            require(
                creators[_id] == msg.sender,
                "ERC1155Tradable#batchMint: ONLY_CREATOR_ALLOWED"
            );
            uint256 quantity = _quantities[i];
            tokenSupply[_id] = tokenSupply[_id] + quantity;
        }
        _mintBatch(_to, _ids, _quantities, _data);
    }

    /**
     * @dev Change the creator address for given tokens
     * @param _to   Address of the new creator
     * @param _ids  Array of Token IDs to change creator
     */
    function setCreator(address _to, uint256[] memory _ids) public {
        require(
            _to != address(0),
            "ERC1155Tradable#setCreator: INVALID_ADDRESS."
        );
        require(
            _ids.length>0,
            "ERC1155Tradeable#setCreator: EMPTY_ARRAY"
        );
        for (uint256 i = 0; i < _ids.length; i++) {
            uint256 id = _ids[i];
            _setCreator(_to, id);
        }
    }

    /**
     * Override isApprovedForAll to whitelist user's OpenSea proxy accounts to enable gas-free listings.
     */
    function isApprovedForAll(address _owner, address _operator)
        public
        view
        override
        returns (bool isOperator)
    {
        //TODO: FAILING HERE ON REGION SALE
        //Failing from inside the transferFAME function (inside safeTransferFrom in the FAME contract itself)
        //When being called by the Region contract as the operator
        //With the user being the owner.
        //WHY!?!?!?

        //Ideas:
        //  Look into the proxy contract, this code is throwing a revert and the debugger seems non-specific
        //  Pour over this again with debugger a couple times

        // Whitelist OpenSea proxy contract for easy trading.
        ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress);
        if (address(proxyRegistry.proxies(_owner)) == _operator) {
            return true;
        }

        return ERC1155.isApprovedForAll(_owner, _operator);
    }

    /**
     * @dev Change the creator address for given token
     * @param _to   Address of the new creator
     * @param _id  Token IDs to change creator of
     */
    function _setCreator(address _to, uint256 _id) internal creatorOnly(_id) {
        creators[_id] = _to;
    }

    /**
     * @dev Returns whether the specified token exists by checking to see if it has a creator
     * @param _id uint256 ID of the token to query the existence of
     * @return bool whether the token exists
     */
    function _exists(uint256 _id) internal view returns (bool) {
        return creators[_id] != address(0);
    }

    /**
     * @dev calculates the next token ID based on value of _currentTokenID
     * @return uint256 for the next token ID
     */
    function _getNextTokenID() internal view returns (uint256) {
        return _currentTokenID + 1;
    }

    /**
     * @dev increments the value of _currentTokenID
     */
    function _incrementTokenTypeId() internal {
        _currentTokenID++;
    }

    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual override {}

    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override
        returns (bool)
    {
        return super.supportsInterface(interfaceId);
    }
}
/**
 * @title BDERC1155Tradable
 * BDERC1155Tradable - BattleDrome ERC1155 contract that whitelists an operator address, has create and mint functionality, and supports useful standards from OpenZeppelin,
 like _exists(), name(), symbol(), and totalSupply()
 */
function isApprovedForAll(address _owner, address _operator)
        public
        view
        override
        returns (bool isOperator)
    {
        //TODO: FAILING HERE ON REGION SALE
        //Failing from inside the transferFAME function (inside safeTransferFrom in the FAME contract itself)
        //When being called by the Region contract as the operator
        //With the user being the owner.
        //WHY!?!?!?

        //Ideas:
        //  Look into the proxy contract, this code is throwing a revert and the debugger seems non-specific
        //  Pour over this again with debugger a couple times

        // Whitelist OpenSea proxy contract for easy trading.
        ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress);
        if (address(proxyRegistry.proxies(_owner)) == _operator) {
            return true;
        }

        return ERC1155.isApprovedForAll(_owner, _operator);
    }
/**
 * Override isApprovedForAll to whitelist user's OpenSea proxy accounts to enable gas-free listings.
 */