using System;
using System.Threading.Tasks;
using System.Collections.Generic;

namespace Swan.Net.Dns {
  /// <summary>
  /// DnsClient public interfaces.
  /// </summary>
  internal partial class DnsClient {
    public interface IDnsMessage {
      IList<DnsQuestion> Questions {
        get;
      }

      Int32 Size {
        get;
      }
      Byte[] ToArray();
    }

    public interface IDnsMessageEntry {
      DnsDomain Name {
        get;
      }
      DnsRecordType Type {
        get;
      }
      DnsRecordClass Class {
        get;
      }

      Int32 Size {
        get;
      }
      Byte[] ToArray();
    }

    public interface IDnsResourceRecord : IDnsMessageEntry {
      TimeSpan TimeToLive {
        get;
      }
      Int32 DataLength {
        get;
      }
      Byte[] Data {
        get;
      }
    }

    public interface IDnsRequest : IDnsMessage {
      Int32 Id {
        get; set;
      }
      DnsOperationCode OperationCode {
        get; set;
      }
      Boolean RecursionDesired {
        get; set;
      }
    }

    public interface IDnsResponse : IDnsMessage {
      Int32 Id {
        get; set;
      }
      IList<IDnsResourceRecord> AnswerRecords {
        get;
      }
      IList<IDnsResourceRecord> AuthorityRecords {
        get;
      }
      IList<IDnsResourceRecord> AdditionalRecords {
        get;
      }
      Boolean IsRecursionAvailable {
        get; set;
      }
      Boolean IsAuthorativeServer {
        get; set;
      }
      Boolean IsTruncated {
        get; set;
      }
      DnsOperationCode OperationCode {
        get; set;
      }
      DnsResponseCode ResponseCode {
        get; set;
      }
    }

    public interface IDnsRequestResolver {
      Task<DnsClientResponse> Request(DnsClientRequest request);
    }
  }
}