syntax = "proto3";

package protobuf;

import "enums.proto";

message StickerMessage {
  string hash = 1;
  int32 pack = 2;
}

message ImageMessage {
  bytes payload = 1;
  ImageType type = 2;
  enum ImageType {
    UNKNOWN_IMAGE_TYPE = 0;
    PNG = 1;
    JPEG = 2;
    WEBP = 3;
    GIF = 4;
  }
}

message AudioMessage {
  bytes payload = 1;
  AudioType type = 2;
  uint64 duration_ms = 3;
  enum AudioType {
    UNKNOWN_AUDIO_TYPE = 0;
    AAC = 1;
    AMR = 2;
  }
}

message ChatMessage {
  // Lamport timestamp of the chat message
  uint64 clock = 1;
  // Unix timestamps in milliseconds, currently not used as we use whisper as more reliable, but here
  // so that we don't rely on it
  uint64 timestamp = 2;
  // Text of the message
  string text = 3;
  // Id of the message that we are replying to
  string response_to = 4;
  // Ens name of the sender
  string ens_name = 5;
  // Chat id, this field is symmetric for public-chats and private group chats,
  // but asymmetric in case of one-to-ones, as the sender will use the chat-id
  // of the received, while the receiver will use the chat-id of the sender.
  // Probably should be the concatenation of sender-pk & receiver-pk in alphabetical order
  string chat_id = 6;

  // The type of message (public/one-to-one/private-group-chat)
  MessageType message_type = 7;
  // The type of the content of the message
  ContentType content_type = 8;

  oneof payload {
    StickerMessage sticker = 9;
    ImageMessage image = 10;
    AudioMessage audio = 11;
  }

  enum ContentType {
    UNKNOWN_CONTENT_TYPE = 0;
    TEXT_PLAIN = 1;
    STICKER = 2;
    STATUS = 3;
    EMOJI = 4;
    TRANSACTION_COMMAND = 5;
    // Only local
    SYSTEM_MESSAGE_CONTENT_PRIVATE_GROUP = 6;
    IMAGE = 7;
    AUDIO = 8;
  }
}