chat_management_cubit3.dart

Future<void> createNewChannel({
    required bool isCreateNewChatPageForCreatingGroup,
  }) async {
    if (state.isInProgress) {
      return;
    }

    String channelImageUrl = "";
    String channelName = state.channelName;
    final listOfMemberIDs = {...state.listOfSelectedUserIDs};

    final currentUserId = _authCubit.state.authUser.id;
    listOfMemberIDs.add(currentUserId);

    if (isCreateNewChatPageForCreatingGroup) {
      // If page opened for creating group case:
      // We can directly enter the group name and upload the image.
      channelName = state.channelName;
      channelImageUrl = randomGroupProfilePhoto;
    } else if (!isCreateNewChatPageForCreatingGroup) {
      // If page opened for creating [1-1 chat] case:
      // Channel name will be selected user's name, and the image of the channel
      // will be image of the selected user.

      if (listOfMemberIDs.length == 2) {
        final String selectedUserId =
            listOfMemberIDs.where((memberIDs) => memberIDs != currentUserId).toList().first;

        final selectedUserFromFirestore =
            await _firebaseFirestore.userDocument(userId: selectedUserId);

        final getSelectedUserDataFromFirestore = await selectedUserFromFirestore.get();

        final selectedUserData = getSelectedUserDataFromFirestore.data() as Map<String, dynamic>?;

        channelName = selectedUserData?["displayName"];

        channelImageUrl = selectedUserData?["photoUrl"];
      }
    }

    final isChannelNameValid =
        !isCreateNewChatPageForCreatingGroup ? true : state.isChannelNameValid;

    if (listOfMemberIDs.length >= 2 && isChannelNameValid) {
      emit(state.copyWith(isInProgress: true, isChannelCreated: false));

      await _chatService.createNewChannel(
        listOfMemberIDs: listOfMemberIDs.toList(),
        channelName: channelName,
        channelImageUrl: channelImageUrl,
      );

      emit(state.copyWith(isInProgress: false, isChannelCreated: true));
    }
  }