Reference Types

message ChatRef {
  oneof ref {
    UserRef user = 1;
    ChannelRef channel = 2;
    GroupRef group = 3;
    RefSelf self = 4;
  }
}

{
  "chat_ref": {
    "user": {
      "user_id": 123456789012345678
    }
  }
}

message UserRef {
  fixed64 user_id = 1;  // @snowflake<User>
}

{
  "chat_ref": {
    "channel": {
      "community_id": 123456789012345678,
      "channel_id": 987654321098765432
    }
  }
}

message ChannelRef {
  fixed64 community_id = 1; // @snowflake<Community>
  fixed64 channel_id = 2;   // @snowflake<Channel>
}

{
  "chat_ref": {
    "group": {
      "group_id": 123456789012345678
    }
  }
}

message GroupRef {
  fixed64 group_id = 1;  // @snowflake<Chat>
}

{
  "chat_ref": {
    "self": {}
  }
}

message RefSelf {}

message StickerPackRef {
  fixed64 id = 1;  // @snowflake<StickerPack>
  // TODO auth
}