/*
 *     Copyright 2022 The Dragonfly Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

syntax = "proto3";

package dfdaemon;

import "common.proto";
import "errordetails.proto";
import "google/protobuf/empty.proto";

// InterestedAllPiecesRequest represents interested all pieces request of SyncPiecesRequest.
message InterestedAllPiecesRequest {
}

// InterestedPiecesRequest represents interested pieces request of SyncPiecesRequest.
message InterestedPiecesRequest {
  // Interested piece numbers.
  repeated uint32 piece_numbers = 1;
}

// SyncPiecesRequest represents request of AnnouncePeer.
message SyncPiecesRequest{
  oneof request {
    InterestedAllPiecesRequest interested_all_pieces_request = 1;
    InterestedPiecesRequest interested_pieces_request = 2;
  }
}

// InterestedPiecesResponse represents interested pieces response of SyncPiecesResponse.
message InterestedPiecesResponse {
  // Interested pieces of task.
  repeated common.Piece pieces = 1;
}

// SyncPiecesResponse represents response of SyncPieces.
message SyncPiecesResponse {
  oneof response {
    InterestedPiecesResponse interested_pieces_response = 1;
  }

  oneof errordetails {
    errordetails.SyncPiecesFailed sync_pieces_failed = 3;
  }
}

// DownloadTaskRequest represents request of DownloadTask.
message DownloadTaskRequest {
  // Download information.
  common.Download download = 1;
}

// UploadTaskRequest represents request of UploadTask.
message UploadTaskRequest {
  // Task metadata.
  common.Task task = 1;
}

// StatTaskRequest represents request of StatTask.
message StatTaskRequest {
  // Task id.
  string task_id = 1;
}

// StatTaskResponse represents response of StatTask.
message StatTaskResponse {
  // Task metadata.
  common.Task task = 1;
}

// DeleteTaskRequest represents request of DeleteTask.
message DeleteTaskRequest {
  // Task id.
  string task_id = 1;
}

// Dfdaemon RPC Service.
service Dfdaemon{
  // SyncPieces syncs pieces from the other peers.
  rpc SyncPieces(stream SyncPiecesRequest)returns(stream SyncPiecesResponse);

  // DownloadTask downloads task back-to-source.
  rpc DownloadTask(DownloadTaskRequest) returns(google.protobuf.Empty);

  // UploadTask uploads task to p2p network.
  rpc UploadTask(UploadTaskRequest) returns(google.protobuf.Empty);

  // StatTask stats task information.
  rpc StatTask(StatTaskRequest) returns(common.Task);

  // DeleteTask deletes task from p2p network.
  rpc DeleteTask(DeleteTaskRequest) returns(google.protobuf.Empty);
}