syntax = "proto3";

package emotions;

// Emotion classification for a message
message Emotion {
  int64 id = 1;
  int64 message_id = 2;
  string emotion = 3;
  double confidence = 4;
  string model_version = 5;
  int64 created_at = 6;
  int64 updated_at = 7;
}

// Request to get a single emotion by message ID
message GetEmotionRequest {
  int64 message_id = 1;
}

// Request to get multiple emotions with optional filters
message GetEmotionsRequest {
  repeated int64 message_ids = 1;
  optional string emotion_filter = 2;
  optional double min_confidence = 3;
  optional int32 limit = 4;
  optional int32 offset = 5;
}

// Response containing multiple emotions
message EmotionsResponse {
  repeated Emotion emotions = 1;
  int32 total_count = 2;
}

// Request to update an emotion (for corrections/fine-tuning)
message UpdateEmotionRequest {
  int64 message_id = 1;
  string emotion = 2;
  double confidence = 3;
  optional string notes = 4;
}

// Request to delete an emotion
message DeleteEmotionRequest {
  int64 id = 1;
}

// Generic response for mutations
message EmotionResponse {
  bool success = 1;
  string message = 2;
  optional Emotion emotion = 3;
}

// Empty message for list all
message Empty {}

// The emotion service with full CRUD operations
service EmotionService {
  // Read operations
  rpc GetEmotion(GetEmotionRequest) returns (Emotion);
  rpc GetEmotions(GetEmotionsRequest) returns (EmotionsResponse);
  rpc ListAllEmotions(Empty) returns (EmotionsResponse);

  // Update operations (for classification corrections and fine-tuning)
  rpc UpdateEmotion(UpdateEmotionRequest) returns (EmotionResponse);
  rpc BatchUpdateEmotions(stream UpdateEmotionRequest) returns (EmotionResponse);

  // Delete operation
  rpc DeleteEmotion(DeleteEmotionRequest) returns (EmotionResponse);
}