/*
 *     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/duration.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;
}

// StatMetadata represents stat metadata request of SyncPiecesRequest.
message StatMetadataRequest {
}

// SyncPiecesRequest represents request of AnnouncePeer.
message SyncPiecesRequest{
  oneof request {
    InterestedAllPiecesRequest interested_all_pieces_request = 1;
    InterestedPiecesRequest interested_pieces_request = 2;
    StatMetadataRequest stat_metadata_request = 3;
  }
}

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

// StatMetadata represents stat metadata request of SyncPiecesResponse.
message StatMetadataResponse {
  // Task metadata.
  common.Metadata metadata = 1;
}

// SyncPiecesResponse represents response of SyncPieces.
message SyncPiecesResponse {
  oneof response {
    InterestedPiecesResponse interested_pieces_response = 1;
    StatMetadataResponse stat_metadata_response = 2;
  }

  oneof errordetails {
    errordetails.SyncPiecesFailed sync_pieces_failed = 3;
    errordetails.StatMetadataFailed stat_metadata_failed = 4;
  }
}

// TriggerTaskRequest represents request of TriggerTask.
message TriggerTaskRequest {
  // Task id.
  string task_id = 1;
  // Task metadata.
  common.Metadata metadata = 2;
}

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

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

// ImportTaskRequest represents request of ImportTask.
message ImportTaskRequest {
  // Task metadata.
  common.Metadata metadata = 1;
  // File path to be imported.
  string path = 2;
}

// ExportTaskRequest represents request of ExportTask.
message ExportTaskRequest {
  // Task metadata.
  common.Metadata metadata = 1;
  // File path to be exported.
  string path = 2;
  // Download timeout.
  google.protobuf.Duration timeout = 3;
  // Download rate limit in bytes per second.
  double download_rate_limit = 4;
  // User id.
  uint64 uid = 5;
  // Group id.
  uint64 gid = 6;
}

// 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);

  // TriggerTask triggers task back-to-source download.
  rpc TriggerTask(TriggerTaskRequest) returns(google.protobuf.Empty);

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

  // ImportTask imports task to p2p network.
  rpc ImportTask(ImportTaskRequest) returns(google.protobuf.Empty);

  // ExportTask exports task from p2p network.
  rpc ExportTask(ExportTaskRequest) returns(google.protobuf.Empty);

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