syntax = "proto3";

package protobuf;

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

  enum MessageType {
    ONE_TO_ONE = 0;
    PUBLIC_GROUP = 1;
    PRIVATE_GROUP = 2;
    // Only local
    SYSTEM_MESSAGE_PRIVATE_GROUP = 3;
    }
  enum ContentType {
    TEXT_PLAIN = 0;
    STICKER = 1;
    STATUS = 2;
    EMOJI = 3;
    COMMAND = 4;
    COMMAND_REQUEST = 5;
  }
}

message ApplicationMetadataMessage {
  // Signature of the payload field
  bytes signature = 1;
  // This is the encoded protobuf of the application level message, i.e ChatMessage
  bytes payload = 2;

  // The type of protobuf message sent
  MessageType message_type = 3;

  enum MessageType {
    TEXT_MESSAGE = 0;
    CONTACT_REQUEST = 1;
    MEMBERSHIP_UPDATE = 2;
    PAIR_INSTALLATION = 3;
    SYNC_INSTALLATION = 4;
  }
}