✨ Shuffle mode swiper

lib/controllers/post_list_controller.dart

@@ -2,10 +2,9 @@ import 'package:get/get.dart';
 import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
 import 'package:solian/models/pagination.dart';
 import 'package:solian/models/post.dart';
+import 'package:solian/providers/content/posts.dart';
 
-import '../providers/content/posts.dart';
+class PostListController extends GetxController {
-
-class PostListController {
   /// The polling source modifier.
   /// - `0`: default recommendations
   /// - `1`: shuffle mode
@@ -46,14 +45,25 @@ class PostListController {
   }
 
   RxBool isBusy = false.obs;
+  RxBool isPreparing = false.obs;
 
+  RxInt focusCursor = 0.obs;
+  Post get focusPost => postList[focusCursor.value];
+
+  RxInt postTotal = 0.obs;
   RxList<Post> postList = RxList.empty(growable: true);
+
   RxInt nextPageKey = 0.obs;
   RxBool hasMore = true.obs;
 
   Future<void> reloadAllOver() async {
+    isPreparing.value = true;
+
+    focusCursor.value = 0;
     nextPageKey.value = 0;
+    postList.clear();
     hasMore.value = true;
+
     _resetPagingController();
     final result = await loadMore();
     if (result != null && hasMore.value) {
@@ -62,19 +72,26 @@ class PostListController {
       pagingController.appendLastPage(result);
     }
     _initPagingController();
+
+    isPreparing.value = false;
   }
 
   Future<List<Post>?> loadMore() async {
     final result = await _loadPosts(nextPageKey.value);
 
     if (result != null && result.length >= 10) {
-      nextPageKey.value = nextPageKey.value + result.length;
+      postList.addAll(result);
+      nextPageKey.value += result.length;
       hasMore.value = true;
     } else if (result != null) {
-      nextPageKey.value = nextPageKey.value + result.length;
+      postList.addAll(result);
+      nextPageKey.value += result.length;
       hasMore.value = false;
     }
 
+    final idx = <dynamic>{};
+    postList.retainWhere((x) => idx.add(x.id));
+
     return result;
   }
 
@@ -98,12 +115,14 @@ class PostListController {
     final PaginationResult result = PaginationResult.fromJson(resp.body);
     final out = result.data?.map((e) => Post.fromJson(e)).toList();
 
-    if (out != null) postList.addAll(out.cast<Post>());
+    postTotal.value = result.count;
 
     return out;
   }
 
+  @override
   void dispose() {
     pagingController.dispose();
+    super.dispose();
   }
 }

lib/screens/home.dart

@@ -9,6 +9,7 @@ import 'package:solian/widgets/app_bar_title.dart';
 import 'package:solian/widgets/current_state_action.dart';
 import 'package:solian/widgets/app_bar_leading.dart';
 import 'package:solian/widgets/feed/feed_list.dart';
+import 'package:solian/widgets/posts/post_shuffle_swiper.dart';
 
 class HomeScreen extends StatefulWidget {
   const HomeScreen({super.key});
@@ -19,19 +20,20 @@ class HomeScreen extends StatefulWidget {
 
 class _HomeScreenState extends State<HomeScreen>
     with SingleTickerProviderStateMixin {
-  final PostListController _postController = PostListController();
+  late final PostListController _postController;
-
   late final TabController _tabController;
 
   @override
   void initState() {
+    Get.lazyPut(() => PostListController());
     super.initState();
+    _postController = Get.find();
     _tabController = TabController(length: 2, vsync: this);
     _tabController.addListener(() {
       switch (_tabController.index) {
         case 0:
         case 1:
-          if (_postController.mode.value == _tabController.index) break;
+          if (_postController.mode.value == _tabController.index) return;
           _postController.mode.value = _tabController.index;
           _postController.reloadAllOver();
       }
@@ -42,6 +44,8 @@ class _HomeScreenState extends State<HomeScreen>
   Widget build(BuildContext context) {
     return Material(
       color: Theme.of(context).colorScheme.surface,
+      child: SafeArea(
+        bottom: false,
         child: Scaffold(
           floatingActionButton: FloatingActionButton(
             child: const Icon(Icons.add),
@@ -55,7 +59,8 @@ class _HomeScreenState extends State<HomeScreen>
             },
           ),
           body: NestedScrollView(
-          headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
+            headerSliverBuilder:
+                (BuildContext context, bool innerBoxIsScrolled) {
               return [
                 SliverAppBar(
                   title: AppBarTitle('home'.tr),
@@ -80,19 +85,28 @@ class _HomeScreenState extends State<HomeScreen>
                 )
               ];
             },
-          body: TabBarView(
+            body: Obx(() {
+              if (_postController.isPreparing.isTrue) {
+                return const Center(
+                  child: CircularProgressIndicator(),
+                );
+              }
+
+              return TabBarView(
+                physics: const NeverScrollableScrollPhysics(),
                 controller: _tabController,
                 children: [
                   RefreshIndicator(
                     onRefresh: () => _postController.reloadAllOver(),
                     child: CustomScrollView(slivers: [
-                  FeedListWidget(controller: _postController.pagingController),
+                      FeedListWidget(
+                          controller: _postController.pagingController),
                     ]),
                   ),
-              CustomScrollView(slivers: [
+                  PostShuffleSwiper(controller: _postController),
-                FeedListWidget(controller: _postController.pagingController),
-              ]),
                 ],
+              );
+            }),
           ),
         ),
       ),

lib/widgets/posts/post_item.dart

@@ -182,7 +182,10 @@ class _PostItemState extends State<PostItem> {
 
   @override
   Widget build(BuildContext context) {
-    final hasAttachment = item.body['attachments']?.isNotEmpty ?? false;
+    final List<int> attachments = item.body['attachments'] is List
+        ? item.body['attachments']?.cast<int>()
+        : List.empty();
+    final hasAttachment = attachments.isNotEmpty;
 
     if (widget.isCompact) {
       return Column(
@@ -199,7 +202,7 @@ class _PostItemState extends State<PostItem> {
             bottom: hasAttachment ? 4 : 0,
           ),
           buildFooter().paddingOnly(left: 16),
-          if (item.body['attachments']?.isNotEmpty ?? false)
+          if (attachments.isNotEmpty)
             Row(
               children: [
                 Icon(
@@ -209,7 +212,7 @@ class _PostItemState extends State<PostItem> {
                 ).paddingOnly(right: 6),
                 Text(
                   'postAttachmentTip'.trParams(
-                    {'count': item.body['attachments']!.length.toString()},
+                    {'count': attachments.length.toString()},
                   ),
                   style: TextStyle(color: _unFocusColor),
                 )
@@ -293,8 +296,7 @@ class _PostItemState extends State<PostItem> {
           ),
           child: AttachmentList(
             parentId: widget.item.id.toString(),
-            attachmentsId:
+            attachmentsId: attachments,
-                item.body['attachments']?.cast<int>() ?? List.empty(),
             divided: true,
           ),
         ),

lib/widgets/posts/post_shuffle_swiper.dart

@@ -0,0 +1,62 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_card_swiper/flutter_card_swiper.dart';
+import 'package:get/get.dart';
+import 'package:solian/controllers/post_list_controller.dart';
+import 'package:solian/widgets/posts/post_single_display.dart';
+
+class PostShuffleSwiper extends StatefulWidget {
+  final PostListController controller;
+
+  const PostShuffleSwiper({super.key, required this.controller});
+
+  @override
+  State<PostShuffleSwiper> createState() => _PostShuffleSwiperState();
+}
+
+class _PostShuffleSwiperState extends State<PostShuffleSwiper> {
+  final CardSwiperController _swiperController = CardSwiperController();
+
+  @override
+  Widget build(BuildContext context) {
+    return Obx(
+      () => CardSwiper(
+        initialIndex: 0,
+        isLoop: false,
+        controller: _swiperController,
+        cardsCount: widget.controller.postTotal.value,
+        numberOfCardsDisplayed: 2,
+        allowedSwipeDirection: const AllowedSwipeDirection.symmetric(
+          horizontal: true,
+        ),
+        cardBuilder: (context, index, percentThresholdX, percentThresholdY) {
+          if (widget.controller.postList.length <= index) {
+            return Card(
+              child: const Center(
+                child: CircularProgressIndicator(),
+              ).paddingAll(24),
+            );
+          }
+          final element = widget.controller.postList[index];
+          return PostSingleDisplay(
+            key: Key('p${element.id}'),
+            item: element,
+          );
+        },
+        padding: const EdgeInsets.all(24),
+        onSwipe: (prevIndex, currIndex, dir) {
+          if (prevIndex + 2 >= widget.controller.postList.length) {
+            // Automatically load more
+            widget.controller.loadMore();
+          }
+          return true;
+        },
+      ).paddingOnly(bottom: MediaQuery.of(context).padding.bottom),
+    );
+  }
+
+  @override
+  void dispose() {
+    _swiperController.dispose();
+    super.dispose();
+  }
+}

lib/widgets/posts/post_single_display.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import 'package:solian/models/post.dart';
+import 'package:solian/widgets/posts/post_item.dart';
+
+class PostSingleDisplay extends StatelessWidget {
+  final Post item;
+
+  const PostSingleDisplay({super.key, required this.item});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      alignment: Alignment.center,
+      child: Card(
+        child: SingleChildScrollView(
+          child: PostItem(
+            item: item,
+          ).paddingSymmetric(horizontal: 10, vertical: 16),
+        ),
+      ),
+    );
+  }
+}

pubspec.lock

@@ -301,10 +301,10 @@ packages:
     dependency: transitive
     description:
       name: dev_build
-      sha256: cd2d110dc7ca372cc45d4eba79e4be9eb54ceda673687305b82be367aad8c652
+      sha256: "5600100e28f7424ed53728e8e7aa6bc0e0506ec04bb49a82616f62112c1822c3"
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.0+7"
+    version: "1.0.0+8"
   device_info_plus:
     dependency: "direct main"
     description:
@@ -389,10 +389,10 @@ packages:
     dependency: transitive
     description:
       name: file_selector_windows
-      sha256: d3547240c20cabf205c7c7f01a50ecdbc413755814d6677f3cb366f04abcead0
+      sha256: "2ad726953f6e8affbc4df8dc78b77c3b4a060967a291e528ef72ae846c60fb69"
       url: "https://pub.dev"
     source: hosted
-    version: "0.9.3+1"
+    version: "0.9.3+2"
   firebase_core:
     dependency: "direct main"
     description:
@@ -506,10 +506,18 @@ packages:
     dependency: transitive
     description:
       name: flutter_cache_manager
-      sha256: "395d6b7831f21f3b989ebedbb785545932adb9afe2622c1ffacf7f4b53a7e544"
+      sha256: ceff65d74d907b1b772e22cf04daad60fb472461638977d9fae8b00a63e01e3d
       url: "https://pub.dev"
     source: hosted
-    version: "3.3.2"
+    version: "3.3.3"
+  flutter_card_swiper:
+    dependency: "direct main"
+    description:
+      name: flutter_card_swiper
+      sha256: "880ad669017154d6d1f8c3abd861db08af97b3b7b0f7d7d5cbde690a9253811d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
   flutter_launcher_icons:
     dependency: "direct dev"
     description:
@@ -620,10 +628,10 @@ packages:
     dependency: "direct main"
     description:
       name: flutter_webrtc
-      sha256: "3f115def06fb80df7c2e9f97b7d73c1b43a973211fc56df69638a663529f56c6"
+      sha256: d305793e6737c59a81c45b18484e1f985710827704eeb9092573387efcbae272
       url: "https://pub.dev"
     source: hosted
-    version: "0.11.4"
+    version: "0.11.5"
   font_awesome_flutter:
     dependency: "direct main"
     description:
@@ -716,10 +724,10 @@ packages:
     dependency: transitive
     description:
       name: image_picker_android
-      sha256: cea2bd5b9fcff039a4901d3b13c67fe747f940be9ba76bde1bcd218d168eeb7f
+      sha256: a26dc9a03fe042440c1e4be554fb0fceae2bf6d887d7467fc48c688fa4a81889
       url: "https://pub.dev"
     source: hosted
-    version: "0.8.12+6"
+    version: "0.8.12+7"
   image_picker_for_web:
     dependency: transitive
     description:
@@ -852,10 +860,10 @@ packages:
     dependency: "direct main"
     description:
       name: livekit_client
-      sha256: "0c369b25e56910650184049cc713bb38a920cbe2e0d10db83fac400a3c393e2b"
+      sha256: e6b1e8a3cdcae95f7e62c0371590648444bac245fce3a1bcfb4ec05889ad82f3
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.1"
+    version: "2.2.2"
   logging:
     dependency: transitive
     description:
@@ -1188,10 +1196,10 @@ packages:
     dependency: transitive
     description:
       name: process_run
-      sha256: "6052115540ad88715d6bcee60656970f70c68c85846d1948b92e435f0382899e"
+      sha256: "6dc6f83198b876431c9823a1f93a4c147470e7f239403c37caca702cf35e146f"
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.0+1"
+    version: "1.0.0+3"
   protobuf:
     dependency: transitive
     description:
@@ -1268,10 +1276,10 @@ packages:
     dependency: transitive
     description:
       name: rxdart
-      sha256: "0c7c0cedd93788d996e33041ffecda924cc54389199cde4e6a34b440f50044cb"
+      sha256: "5c3004a4a8dbb94bd4bf5412a4def4acdaa12e12f269737a5751369e12d1a962"
       url: "https://pub.dev"
     source: hosted
-    version: "0.27.7"
+    version: "0.28.0"
   safe_local_storage:
     dependency: transitive
     description:
@@ -1340,18 +1348,18 @@ packages:
     dependency: transitive
     description:
       name: sentry
-      sha256: cbc29cbdd8a047aab3df42f826daf07e58dfb2e1d550895d1021a6d4e618b00d
+      sha256: "60756499f09c3ed944640d7993ac527a89f7c3033f13ec12ae145706b269b5c8"
       url: "https://pub.dev"
     source: hosted
-    version: "8.4.0"
+    version: "8.5.0"
   sentry_flutter:
     dependency: "direct main"
     description:
       name: sentry_flutter
-      sha256: "96ce085e1be6c9963d93d42d6ba5c67484c076c59d25c94a7ba906549dc6c635"
+      sha256: "26cfe89cb08a60d9bc0c4e748a0508e223ae378265aec8ed2a2b48f0d2c936b9"
       url: "https://pub.dev"
     source: hosted
-    version: "8.4.0"
+    version: "8.5.0"
   shelf:
     dependency: transitive
     description:
@@ -1633,10 +1641,10 @@ packages:
     dependency: transitive
     description:
       name: url_launcher_windows
-      sha256: ecf9725510600aa2bb6d7ddabe16357691b6d2805f66216a97d1b881e21beff7
+      sha256: "49c10f879746271804767cb45551ec5592cdab00ee105c06dddde1a98f73b185"
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.1"
+    version: "3.1.2"
   uuid:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -54,6 +54,7 @@ dependencies:
   pasteboard: ^0.2.0
   desktop_drop: ^0.4.4
   badges: ^3.1.2
+  flutter_card_swiper: ^7.0.1
 
 dev_dependencies:
   flutter_test: