pragma solidity >=0.4.24;

interface IENS {
  // Logged when the owner of a node assigns a new owner to a subnode.
  event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);

  // Logged when the owner of a node transfers ownership to a new account.
  event Transfer(bytes32 indexed node, address owner);

  // Logged when the resolver for a node changes.
  event NewResolver(bytes32 indexed node, address resolver);

  // Logged when the TTL of a node changes
  event NewTTL(bytes32 indexed node, uint64 ttl);

  // 设置子域名属主
  function setSubnodeOwner(
    bytes32 node,
    bytes32 label,
    address owner
  ) external;

  // 设置域名解析器
  function setResolver(bytes32 node, address resolver) external;

  // 设置域名属主
  function setOwner(bytes32 node, address owner) external;

  // 设置域名TTL Time To Live
  function setTTL(bytes32 node, uint64 ttl) external;

  // 获取相应域名的属主
  function owner(bytes32 node) external view returns (address);

  // 获取相应域名的解析器
  function resolver(bytes32 node) external view returns (address);

  // 获取相应域名的TTL
  function ttl(bytes32 node) external view returns (uint64);
}