spotube/lib/hooks/usePaginatedFutureProvider.dart

import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
import 'package:spotube/hooks/usePagingController.dart';

PagingController<P, ItemType> usePaginatedFutureProvider<T, P, ItemType>(
  AutoDisposeFutureProvider<T> Function(P pageKey) createSnapshot, {
  required P firstPageKey,
  required WidgetRef ref,
  void Function(
    AsyncData<T>,
    PagingController<P, ItemType> pagingController,
    P pageKey,
  )?
      onData,
  void Function(AsyncError<T>)? onError,
  void Function(AsyncLoading<T>)? onLoading,
}) {
  final currentPageKey = useState(firstPageKey);
  final snapshot = ref.watch(createSnapshot(currentPageKey.value));
  final pagingController =
      usePagingController<P, ItemType>(firstPageKey: firstPageKey);
  useEffect(() {
    listener(pageKey) {
      if (currentPageKey.value != pageKey) {
        currentPageKey.value = pageKey;
      }
    }

    pagingController.addPageRequestListener(listener);
    return () => pagingController.removePageRequestListener(listener);
  }, [snapshot, currentPageKey]);

  useEffect(() {
    snapshot.mapOrNull(
      data: (data) =>
          onData?.call(data, pagingController, currentPageKey.value),
      error: (error) {
        pagingController.error = error;
        return onError?.call(error);
      },
      loading: onLoading,
    );
    return null;
  }, [currentPageKey, snapshot]);

  return pagingController;
}