// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IDNSRecordResolver {
    // DNSRecordChanged is emitted whenever a given node/name/resource's RRSET is updated.
    event DNSRecordChanged(
        bytes32 indexed node,
        bytes name,
        uint16 resource,
        bytes record
    );
    // DNSRecordDeleted is emitted whenever a given node/name/resource's RRSET is deleted.
    event DNSRecordDeleted(bytes32 indexed node, bytes name, uint16 resource);

    /// Obtain a DNS record.
    /// @param node the namehash of the node for which to fetch the record
    /// @param name the keccak-256 hash of the fully-qualified name for which to fetch the record
    /// @param resource the ID of the resource as per https://en.wikipedia.org/wiki/List_of_DNS_record_types
    /// @return the DNS record in wire format if present, otherwise empty
    function dnsRecord(
        bytes32 node,
        bytes32 name,
        uint16 resource
    ) external view returns (bytes memory);
}