// ste:todo: make a third shared contract project to share the *.proto files between the client and server projects.
// This will allow both projects to reference the same proto files and avoid duplication.
syntax = "proto3";

// define the C# namespcace for the generated classes
option csharp_namespace = "Grpc";

import "google/protobuf/empty.proto";

// Request message
message WeatherRequest {
  double latitude = 1;
  double longitude = 2;
}

// Response message
message WeatherResponse {
  double temperature_2m = 1;  
  int32 weather_code = 2;
  string weather_description = 3;
}

// Speed test: ask for a made-up hourly forecast of `count` points
message ForecastRequest {
  int32 count = 1;
}

// Speed test: one hour of forecast (field names as Open-Meteo's hourly variables)
message ForecastPoint {
  int64 unix_time = 1;
  double temperature_2m = 2;
  double apparent_temperature = 3;
  double relative_humidity_2m = 4;
  double dew_point_2m = 5;
  double precipitation = 6;
  double pressure_msl = 7;
  double cloud_cover = 8;
  double wind_speed_10m = 9;
  double wind_direction_10m = 10;
  double wind_gusts_10m = 11;
  int32 weather_code = 12;
}

// Speed test: the whole forecast in one reply
message ForecastResponse {
  repeated ForecastPoint points = 1;
}

// gRPC service definition
service WeatherService {
  rpc GetWeather (WeatherRequest) returns (WeatherResponse);

// New minimal echo endpoint, for speed test
rpc EchoWeather (google.protobuf.Empty) returns (WeatherResponse);

// Large payload echo endpoint, for speed test (same data as REST /forecast-echo)
rpc EchoForecast (ForecastRequest) returns (ForecastResponse);

// Same forecast sent as a server stream, one point per message, for speed test
rpc StreamForecast (ForecastRequest) returns (stream ForecastPoint);
}