// Copyright 2020 The gRPC 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 grpc.testing;

message CallInfo {
  string session_id = 1;
  string media = 2;
}

message CallState {
  enum State {
    // The default state.
    UNDEFINED = 0;
    // The call is newly created.
    NEW = 1;
    // The call is connected.
    ACTIVE = 6;
    // The call is finished.
    ENDED = 7;
  }
  State state = 2;
}

message StreamCallRequest {
  string phone_number = 1;
}

message StreamCallResponse {
  oneof stream_call_response {
    CallInfo call_info = 1;
    CallState call_state = 2;
  } 
}

service Phone {
  // Makes a phone call and communicate states via a stream.
  rpc StreamCall(stream StreamCallRequest) returns (stream StreamCallResponse);
}