contract PublicResolver is AddrResolver, TextResolver {
  ENS ens;

  /**
    * A mapping of operators. An address that is authorised for an address
    * may make any changes to the name that the owner could, but may not update
    * the set of authorisations.
    * (owner, operator) => approved
    */
  mapping(address => mapping(address => bool)) private _operatorApprovals;

  // Logged when an operator is added or removed.
  event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

  constructor(ENS _ens){
    ens = _ens;
  }

  /**
    * @dev See {IERC1155-setApprovalForAll}.
    */
  function setApprovalForAll(address operator, bool approved) external{
    require(
      msg.sender != operator,
      "ERC1155: setting approval status for self"
    );

    _operatorApprovals[msg.sender][operator] = approved;
    emit ApprovalForAll(msg.sender, operator, approved);
  }

  function isAuthorised(bytes32 node) internal override view returns(bool) {
    address owner = ens.owner(node);
    return owner == msg.sender || isApprovedForAll(owner, msg.sender);
  }

  /**
    * @dev See {IERC1155-isApprovedForAll}.
    */
  function isApprovedForAll(address account, address operator) public view returns (bool){
    return _operatorApprovals[account][operator];
  }
}
/**
 * A simple resolver anyone can use; only allows the owner of a node to set its
 * address.
 */
function isApprovedForAll(address account, address operator) public view returns (bool){
  return _operatorApprovals[account][operator];
}

/**
 * @dev See {IERC1155-isApprovedForAll}.
 */