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♻️ Rebuilt fetching state machine

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This commit is contained in:
LittleSheep
2026-01-01 11:40:28 +08:00
parent eea56a742e
commit 38dffa414f
34 changed files with 665 additions and 430 deletions
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32
lib/pods/drive/file_list.dart
View File

@@ -18,7 +18,8 @@ final indexedCloudFileListProvider = AsyncNotifierProvider.autoDispose(
IndexedCloudFileListNotifier.new,
);
class IndexedCloudFileListNotifier extends AsyncNotifier<List<FileListItem>>
class IndexedCloudFileListNotifier
extends AsyncNotifier<PaginationState<FileListItem>>
with AsyncPaginationController<FileListItem> {
String _currentPath = '/';
String? _poolId;
@@ -51,6 +52,19 @@ class IndexedCloudFileListNotifier extends AsyncNotifier<List<FileListItem>>
ref.invalidateSelf();
}
@override
FutureOr<PaginationState<FileListItem>> build() async {
final items = await fetch();
return PaginationState(
items: items,
isLoading: false,
isReloading: false,
totalCount: null,
hasMore: false,
cursor: null,
);
}
@override
Future<List<FileListItem>> fetch() async {
final client = ref.read(apiClientProvider);
@@ -96,7 +110,8 @@ final unindexedFileListProvider = AsyncNotifierProvider.autoDispose(
UnindexedFileListNotifier.new,
);
class UnindexedFileListNotifier extends AsyncNotifier<List<FileListItem>>
class UnindexedFileListNotifier
extends AsyncNotifier<PaginationState<FileListItem>>
with AsyncPaginationController<FileListItem> {
String? _poolId;
bool _recycled = false;
@@ -131,6 +146,19 @@ class UnindexedFileListNotifier extends AsyncNotifier<List<FileListItem>>
static const int pageSize = 20;
@override
FutureOr<PaginationState<FileListItem>> build() async {
final items = await fetch();
return PaginationState(
items: items,
isLoading: false,
isReloading: false,
totalCount: totalCount,
hasMore: hasMore,
cursor: cursor,
);
}
@override
Future<List<FileListItem>> fetch() async {
final client = ref.read(apiClientProvider);

164
lib/pods/paging.dart
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@@ -2,6 +2,42 @@ import 'dart:async';
import 'package:hooks_riverpod/hooks_riverpod.dart';
class PaginationState<T> {
final List<T> items;
final bool isLoading;
final bool isReloading;
final int? totalCount;
final bool hasMore;
final String? cursor;
const PaginationState({
required this.items,
required this.isLoading,
required this.isReloading,
required this.totalCount,
required this.hasMore,
required this.cursor,
});
PaginationState<T> copyWith({
List<T>? items,
bool? isLoading,
bool? isReloading,
int? totalCount,
bool? hasMore,
String? cursor,
}) {
return PaginationState<T>(
items: items ?? this.items,
isLoading: isLoading ?? this.isLoading,
isReloading: isReloading ?? this.isReloading,
totalCount: totalCount ?? this.totalCount,
hasMore: hasMore ?? this.hasMore,
cursor: cursor ?? this.cursor,
);
}
}
abstract class PaginationController<T> {
int? get totalCount;
int get fetchedCount;
@@ -27,51 +63,84 @@ abstract class PaginationFiltered<F> {
Future<void> applyFilter(F filter);
}
mixin AsyncPaginationController<T> on AsyncNotifier<List<T>>
mixin AsyncPaginationController<T> on AsyncNotifier<PaginationState<T>>
implements PaginationController<T> {
@override
int? totalCount;
@override
int get fetchedCount => isReloading ? 0 : state.value?.length ?? 0;
int get fetchedCount =>
state.value?.isReloading == true ? 0 : state.value?.items.length ?? 0;
@override
bool get fetchedAll =>
!hasMore || (totalCount != null && fetchedCount >= totalCount!);
!(state.value?.hasMore ?? true) ||
((state.value?.totalCount != null &&
fetchedCount >= state.value!.totalCount!));
@override
bool isLoading = false;
bool get isLoading => state.value?.isLoading ?? false;
@override
bool isReloading = false;
bool get isReloading => state.value?.isReloading ?? false;
@override
bool hasMore = true;
bool get hasMore => state.value?.hasMore ?? true;
@override
String? cursor;
String? get cursor => state.value?.cursor;
@override
FutureOr<List<T>> build() async {
cursor = null;
return fetch();
set hasMore(bool value) {
if (state is AsyncData) {
state = AsyncData((state as AsyncData).value.copyWith(hasMore: value));
}
}
@override
set cursor(String? value) {
if (state is AsyncData) {
state = AsyncData((state as AsyncData).value.copyWith(cursor: value));
}
}
@override
FutureOr<PaginationState<T>> build() async {
final items = await fetch();
return PaginationState(
items: items,
isLoading: false,
isReloading: false,
totalCount: totalCount,
hasMore: hasMore,
cursor: cursor,
);
}
@override
Future<void> refresh() async {
isLoading = true;
isReloading = true;
totalCount = null;
hasMore = true;
cursor = null;
state = AsyncLoading<List<T>>();
state = AsyncData(
state.value!.copyWith(
isLoading: true,
isReloading: true,
totalCount: null,
hasMore: true,
cursor: null,
),
);
final newState = await AsyncValue.guard<List<T>>(() async {
return await fetch();
});
isReloading = false;
isLoading = false;
state = newState;
final newItems = await fetch();
state = AsyncData(
state.value!.copyWith(
items: newItems,
isLoading: false,
isReloading: false,
totalCount: totalCount,
hasMore: hasMore,
cursor: cursor,
),
);
}
@override
@@ -79,16 +148,16 @@ mixin AsyncPaginationController<T> on AsyncNotifier<List<T>>
if (fetchedAll) return;
if (isLoading) return;
isLoading = true;
state = AsyncLoading<List<T>>();
state = AsyncData(state.value!.copyWith(isLoading: true));
final newState = await AsyncValue.guard<List<T>>(() async {
final elements = await fetch();
return [...?state.value, ...elements];
});
final newItems = await fetch();
isLoading = false;
state = newState;
state = AsyncData(
state.value!.copyWith(
items: [...state.value!.items, ...newItems],
isLoading: false,
),
);
}
}
@@ -97,20 +166,29 @@ mixin AsyncPaginationFilter<F, T> on AsyncPaginationController<T>
@override
Future<void> applyFilter(F filter) async {
if (currentFilter == filter) return;
// Reset the data
isReloading = true;
isLoading = true;
totalCount = null;
hasMore = true;
cursor = null;
state = AsyncLoading<List<T>>();
state = AsyncData(
state.value!.copyWith(
isReloading: true,
isLoading: true,
totalCount: null,
hasMore: true,
cursor: null,
),
);
currentFilter = filter;
final newState = await AsyncValue.guard<List<T>>(() async {
return await fetch();
});
isLoading = false;
isReloading = false;
state = newState;
final newItems = await fetch();
state = AsyncData(
state.value!.copyWith(
items: newItems,
isLoading: false,
isReloading: false,
totalCount: totalCount,
hasMore: hasMore,
cursor: cursor,
),
);
}
}

42
lib/pods/post/post_categories.dart
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@@ -1,4 +1,6 @@
// Post Categories Notifier
import 'dart:async';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:island/models/post_category.dart';
import 'package:island/models/post_tag.dart';
@@ -8,11 +10,25 @@ import 'package:island/pods/paging.dart';
final postCategoriesProvider =
AsyncNotifierProvider.autoDispose<
PostCategoriesNotifier,
List<SnPostCategory>
PaginationState<SnPostCategory>
>(PostCategoriesNotifier.new);
class PostCategoriesNotifier extends AsyncNotifier<List<SnPostCategory>>
class PostCategoriesNotifier
extends AsyncNotifier<PaginationState<SnPostCategory>>
with AsyncPaginationController<SnPostCategory> {
@override
FutureOr<PaginationState<SnPostCategory>> build() async {
final items = await fetch();
return PaginationState(
items: items,
isLoading: false,
isReloading: false,
totalCount: totalCount,
hasMore: hasMore,
cursor: cursor,
);
}
@override
Future<List<SnPostCategory>> fetch() async {
final client = ref.read(apiClientProvider);
@@ -30,12 +46,26 @@ class PostCategoriesNotifier extends AsyncNotifier<List<SnPostCategory>>
// Post Tags Notifier
final postTagsProvider =
AsyncNotifierProvider.autoDispose<PostTagsNotifier, List<SnPostTag>>(
PostTagsNotifier.new,
);
AsyncNotifierProvider.autoDispose<
PostTagsNotifier,
PaginationState<SnPostTag>
>(PostTagsNotifier.new);
class PostTagsNotifier extends AsyncNotifier<List<SnPostTag>>
class PostTagsNotifier extends AsyncNotifier<PaginationState<SnPostTag>>
with AsyncPaginationController<SnPostTag> {
@override
FutureOr<PaginationState<SnPostTag>> build() async {
final items = await fetch();
return PaginationState(
items: items,
isLoading: false,
isReloading: false,
totalCount: totalCount,
hasMore: hasMore,
cursor: cursor,
);
}
@override
Future<List<SnPostTag>> fetch() async {
final client = ref.read(apiClientProvider);

16
lib/pods/post/post_list.dart
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@@ -1,3 +1,5 @@
import 'dart:async';
import 'package:freezed_annotation/freezed_annotation.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:island/models/post.dart';
@@ -39,7 +41,7 @@ final postListProvider = AsyncNotifierProvider.autoDispose.family(
PostListNotifier.new,
);
class PostListNotifier extends AsyncNotifier<List<SnPost>>
class PostListNotifier extends AsyncNotifier<PaginationState<SnPost>>
with
AsyncPaginationController<SnPost>,
AsyncPaginationFilter<PostListQuery, SnPost> {
@@ -53,9 +55,17 @@ class PostListNotifier extends AsyncNotifier<List<SnPost>>
late PostListQuery currentFilter;
@override
Future<List<SnPost>> build() async {
FutureOr<PaginationState<SnPost>> build() async {
currentFilter = config.initialFilter;
return fetch();
final items = await fetch();
return PaginationState(
items: items,
isLoading: false,
isReloading: false,
totalCount: totalCount,
hasMore: hasMore,
cursor: cursor,
);
}
@override

22
lib/pods/timeline.dart
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@@ -1,3 +1,5 @@
import 'dart:async';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:island/models/activity.dart';
import 'package:island/pods/network.dart';
@@ -7,12 +9,26 @@ final activityListProvider = AsyncNotifierProvider.autoDispose(
ActivityListNotifier.new,
);
class ActivityListNotifier extends AsyncNotifier<List<SnTimelineEvent>>
class ActivityListNotifier
extends AsyncNotifier<PaginationState<SnTimelineEvent>>
with
AsyncPaginationController<SnTimelineEvent>,
AsyncPaginationFilter<String?, SnTimelineEvent> {
static const int pageSize = 20;
@override
FutureOr<PaginationState<SnTimelineEvent>> build() async {
final items = await fetch();
return PaginationState(
items: items,
isLoading: false,
isReloading: false,
totalCount: totalCount,
hasMore: hasMore,
cursor: cursor,
);
}
@override
String? currentFilter;
@@ -54,9 +70,9 @@ class ActivityListNotifier extends AsyncNotifier<List<SnTimelineEvent>>
final currentState = state.value;
if (currentState == null) return;
final updatedItems = [...currentState];
final updatedItems = [...currentState.items];
updatedItems[index] = activity;
state = AsyncData(updatedItems);
state = AsyncData(currentState.copyWith(items: updatedItems));
}
}