deleteChatItem method

Implementation

Future<void> deleteChatItem(ChatItem item) async {
  Log.debug('deleteChatItem($item)', '$runtimeType');

  if (item is! ChatMessage && item is! ChatForward) {
    throw UnimplementedError('Deletion of $item is not implemented.');
  }

  Chat? chat = chats[item.chatId]?.chat.value;

  if (item is ChatMessage) {
    if (item.author.id != me) {
      throw const DeleteChatMessageException(
        DeleteChatMessageErrorCode.notAuthor,
      );
    }

    if (me != null && chat?.isRead(item, me!) == true) {
      throw const DeleteChatMessageException(DeleteChatMessageErrorCode.read);
    }

    await _chatRepository.deleteChatMessage(item);
  } else if (item is ChatForward) {
    if (item.author.id != me) {
      throw const DeleteChatForwardException(
        DeleteChatForwardErrorCode.notAuthor,
      );
    }

    if (me != null && chat?.isRead(item, me!) == true) {
      throw const DeleteChatForwardException(DeleteChatForwardErrorCode.read);
    }

    await _chatRepository.deleteChatForward(item);
  }
}