sendChatMessage method

Future<void> sendChatMessage(
  1. ChatId chatId, {
  2. ChatMessageText? text,
  3. List<Attachment>? attachments,
  4. List<ChatItem> repliesTo = const [],
})

Posts a new ChatMessage to the specified Chat by the authenticated MyUser.

For the posted ChatMessage to be meaningful, at least one of text or attachments arguments must be specified and non-empty.

Specify repliesTo argument if the posted ChatMessage is going to be a reply to some other ChatItem.

Implementation

Future<void> sendChatMessage(
  ChatId chatId, {
  ChatMessageText? text,
  List<Attachment>? attachments,
  List<ChatItem> repliesTo = const [],
}) {
  Log.debug(
    'sendChatMessage($chatId, $text, $attachments, $repliesTo)',
    '$runtimeType',
  );

  if (text?.val.isNotEmpty != true &&
      attachments?.isNotEmpty != true &&
      repliesTo.isNotEmpty) {
    text ??= const ChatMessageText(' ');
  } else if (text != null) {
    text = ChatMessageText(text.val.trim());

    if (text.val.length > ChatMessageText.maxLength) {
      final List<ChatMessageText> chunks = text.split();
      int i = 0;

      return Future.forEach<ChatMessageText>(
        chunks,
        (text) => _chatRepository.sendChatMessage(
          chatId,
          text: text,
          attachments: i++ != chunks.length - 1 ? null : attachments,
          repliesTo: repliesTo,
        ),
      );
    }
  }

  return _chatRepository.sendChatMessage(
    chatId,
    text: text?.val.isEmpty == true ? null : text,
    attachments: attachments,
    repliesTo: repliesTo,
  );
}