contract LeftGallery is ERC721Full, Ownable {
    using Roles for Roles.Role;
    Roles.Role private _admins;
    uint8 admins;

    address public metadata;
    address public controller;

    modifier onlyAdminOrController() {
        require(
            (_admins.has(msg.sender) || msg.sender == controller),
            "DOES_NOT_HAVE_ADMIN_OR_CONTROLLER_ROLE"
        );
        _;
    }

    constructor(
        string memory name,
        string memory symbol,
        address _metadata
    ) public ERC721Full(name, symbol) {
        metadata = _metadata;
        _admins.add(msg.sender);
        admins += 1;
    }

    function mint(address recepient, uint256 tokenId)
        public
        onlyAdminOrController
    {
        _mint(recepient, tokenId);
    }

    function burn(uint256 tokenId) public onlyAdminOrController {
        _burn(ownerOf(tokenId), tokenId);
    }

    function updateMetadata(address _metadata) public onlyAdminOrController {
        metadata = _metadata;
    }

    function updateController(address _controller)
        public
        onlyAdminOrController
    {
        controller = _controller;
    }

    function addAdmin(address _admin) public onlyOwner {
        _admins.add(_admin);
        admins += 1;
    }

    function removeAdmin(address _admin) public onlyOwner {
        require(admins > 1, "CANT_REMOVE_LAST_ADMIN");
        _admins.remove(_admin);
        admins -= 1;
    }

    function tokenURI(uint256 _tokenId)
        external
        view
        returns (string memory _infoUrl)
    {
        return Metadata(metadata).tokenURI(_tokenId);
    }

    /**
     * @dev Moves Token to a certain address.
     * @param _to The address to receive the Token.
     * @param _amount The amount of Token to be transferred.
     * @param _token The address of the Token to be transferred.
     */
    function moveToken(
        address _to,
        uint256 _amount,
        address _token
    ) public onlyAdminOrController returns (bool) {
        require(_amount <= IERC20(_token).balanceOf(address(this)));
        return IERC20(_token).transfer(_to, _amount);
    }
}
/**
 * The Token contract does this and that...
 */
function moveToken(
    address _to,
    uint256 _amount,
    address _token
) public onlyAdminOrController returns (bool) {
    require(_amount <= IERC20(_token).balanceOf(address(this)));
    return IERC20(_token).transfer(_to, _amount);
}

/**
 * @dev Moves Token to a certain address.
 * @param _to The address to receive the Token.
 * @param _amount The amount of Token to be transferred.
 * @param _token The address of the Token to be transferred.
 */