Update version code.

Allow user to keep favorite and history when delete local comic. Close #420

assets/init.js

@@ -39,6 +39,32 @@ let Convert = {
         });
     },
 
+    /**
+     * @param str {string}
+     * @returns {ArrayBuffer}
+     */
+    encodeGbk: (str) => {
+        return sendMessage({
+            method: "convert",
+            type: "gbk",
+            value: str,
+            isEncode: true
+        });
+    },
+
+    /**
+     * @param value {ArrayBuffer}
+     * @returns {string}
+     */
+    decodeGbk: (value) => {
+        return sendMessage({
+            method: "convert",
+            type: "gbk",
+            value: value,
+            isEncode: false
+        });
+    },
+
     /**
      * @param {ArrayBuffer} value
      * @returns {string}
@@ -176,7 +202,7 @@ let Convert = {
     decryptAesCbc: (value, key, iv) => {
         return sendMessage({
             method: "convert",
-            type: "aes-ecb",
+            type: "aes-cbc",
             value: value,
             key: key,
             iv: iv,
@@ -1296,13 +1322,15 @@ let UI = {
      * Show an input dialog
      * @param title {string}
      * @param validator {(string) => string | null | undefined} - A function that validates the input. If the function returns a string, the dialog will show the error message.
+     * @param image {string?} - Available since 1.4.6. An optional image to show in the dialog. You can use this to show a captcha.
      * @returns {Promise<string | null>} - The input value. If the dialog is canceled, return null.
      */
-    showInputDialog: (title, validator) => {
+    showInputDialog: (title, validator, image) => {
         return sendMessage({
             method: 'UI',
             function: 'showInputDialog',
             title: title,
+            image: image,
             validator: validator
         })
     },

assets/translation.json

@@ -234,8 +234,10 @@
     "Please add some sources": "请添加一些源",
     "Please check your settings": "请检查您的设置",
     "No Category Pages": "没有分类页面",
+    "Group @group": "第 @group 组",
     "Chapter @ep": "第 @ep 章",
     "Page @page": "第 @page 页",
+    "Remove local favorite and history": "删除本地收藏和历史记录",
     "Also remove files on disk": "同时删除磁盘上的文件",
     "Copy to app local path": "将漫画复制到本地存储目录中",
     "Delete all unavailable local favorite items": "删除所有无效的本地收藏",
@@ -388,10 +390,21 @@
     "Suggestions": "建议",
     "Do not report any issues related to sources to App repo.": "请不要向App仓库报告任何与源相关的问题",
     "Show single image on first page": "在首页显示单张图片",
+    "Show system status bar": "显示系统状态栏",
     "Click to select an image": "点击选择一张图片",
-    "Source URL": "源地址",
+    "Repo URL": "仓库地址",
     "The URL should point to a 'index.json' file": "该URL应指向一个'index.json'文件",
-    "Double tap to zoom": "双击缩放"
+    "Double tap to zoom": "双击缩放",
+    "Clear Unfavorited": "清除未收藏",
+    "Reverse": "反转",
+    "Delete Chapters": "删除章节",
+    "Path copied to clipboard": "路径已复制到剪贴板",
+    "Reverse default chapter order": "反转默认章节顺序",
+    "Reload Configs": "重新加载配置文件",
+    "Reload": "重载",
+    "Disable Length Limitation": "禁用长度限制",
+    "Only valid for this run": "仅对本次运行有效",
+    "Logs": "日志"
   },
   "zh_TW": {
     "Home": "首頁",
@@ -628,8 +641,10 @@
     "Please add some sources": "請添加一些源",
     "Please check your settings": "請檢查您的設定",
     "No Category Pages": "沒有分類頁面",
+    "Group @group": "第 @group 組",
     "Chapter @ep": "第 @ep 章",
     "Page @page": "第 @page 頁",
+    "Remove local favorite and history": "刪除本機收藏和歷史記錄",
     "Also remove files on disk": "同時刪除磁碟上的文件",
     "Copy to app local path": "將漫畫複製到本機儲存目錄中",
     "Delete all unavailable local favorite items": "刪除所有無效的本機收藏",
@@ -782,9 +797,20 @@
     "Suggestions": "建議",
     "Do not report any issues related to sources to App repo.": "請不要向App倉庫報告任何與源相關的問題",
     "Show single image on first page": "在首頁顯示單張圖片",
+    "Show system status bar": "顯示系統狀態欄",
     "Click to select an image": "點擊選擇一張圖片",
-    "Source URL": "源地址",
+    "Repo URL": "倉庫地址",
     "The URL should point to a 'index.json' file": "該URL應指向一個'index.json'文件",
-    "Double tap to zoom": "雙擊縮放"
+    "Double tap to zoom": "雙擊縮放",
+    "Clear Unfavorited": "清除未收藏",
+    "Reverse": "反轉",
+    "Delete Chapters": "刪除章節",
+    "Path copied to clipboard": "路徑已複製到剪貼簿",
+    "Reverse default chapter order": "反轉預設章節順序",
+    "Reload Configs": "重新載入設定檔",
+    "Reload": "重載",
+    "Disable Length Limitation": "禁用長度限制",
+    "Only valid for this run": "僅對本次運行有效",
+    "Logs": "日誌"
   }
 }

doc/comic_source.md

@@ -9,13 +9,47 @@ Venera uses [flutter_qjs](https://github.com/wgh136/flutter_qjs) as js engine wh
 
 This document will describe how to write a comic source for Venera.
 
-## Preparation
+## Comic Source List
+
+Venera can display a list of comic sources in the app.
+
+You can use the following repo url:
+```
+https://git.nyne.dev/nyne/venera-configs/raw/branch/main/index.json
+```
+The repo is maintained by the Venera team.
+
+> The link is a mirror of the original repo. To contribute your comic source, please visit the [original repo](https://github.com/venera-app/venera-configs)
+
+You should provide a repository url to let the app load the comic source list.
+The url should point to a JSON file that contains the list of comic sources.
+
+The JSON file should have the following format:
+
+```json
+[
+  {
+    "name": "Source Name",
+    "url": "https://example.com/source.js",
+    "filename": "Relative path to the source file",
+    "version": "1.0.0",
+    "description": "A brief description of the source"
+  }
+]
+```
+
+Only one of `url` and `filename` should be provided.
+The description field is optional.
+
+## Create a Comic Source
+
+### Preparation
 
 - Install Venera. Using flutter to run the project is recommended since it's easier to debug.
 - An editor that supports javascript.
 - Download template and venera javascript api from [here](https://github.com/venera-app/venera-configs).
 
-## Start Writing
+### Start Writing
 
 The template contains detailed comments and examples. You can refer to it when writing your own comic source.
 
@@ -23,7 +57,7 @@ Here is a brief introduction to the template:
 
 > Note: Javascript api document is [here](js_api.md).
 
-### Write basic information
+#### Write basic information
 
 ```javascript
 class NewComicSource extends ComicSource {
@@ -49,7 +83,7 @@ In this part, you need to do the following:
 - Change the class name to your source name.
 - Fill in the name, key, version, minAppVersion, and url fields.
 
-### init function
+#### init function
 
 ```javascript
     /**
@@ -64,7 +98,7 @@ The function will be called when the source is initialized. You can do some init
 
 Remove this function if not used.
 
-### Account
+#### Account
 
 ```javascript
 // [Optional] account related
@@ -140,7 +174,7 @@ In this part, you can implement login, logout, and register functions.
 
 Remove this part if not used.
 
-### Explore page
+#### Explore page
 
 ```javascript
     // explore page list
@@ -185,7 +219,7 @@ There are three types of explore pages:
 - multiPageComicList: An explore page contains multiple comics, the comics are loaded page by page.
 - mixed: An explore page contains multiple parts, each part can be a list of comics or a block of comics which have a title and a view more button.
 
-### Category Page
+#### Category Page
 
 ```javascript
     // categories
@@ -227,7 +261,7 @@ Category page is a static page that contains multiple parts, each part contains
 
 A comic source can only have one category page.
 
-### Category Comics Page
+#### Category Comics Page
 
 ```javascript
     /// category comic loading related
@@ -280,7 +314,7 @@ When user clicks on a category, the category comics page will be displayed.
 
 This part is used to load comics of a category.
 
-### Search
+#### Search
 
 ```javascript
     /// search related
@@ -339,7 +373,7 @@ This part is used to load search results.
 `load` and `loadNext` functions are used to load search results. 
 If `load` function is implemented, `loadNext` function will be ignored.
 
-### Favorites
+#### Favorites
 
 ```javascript
     // favorite related
@@ -411,7 +445,7 @@ This part is used to manage network favorites of the source.
 `load` and `loadNext` functions are used to load search results.
 If `load` function is implemented, `loadNext` function will be ignored.
 
-### Comic Details
+#### Comic Details
 
 ```javascript
     /// single comic related
@@ -576,7 +610,7 @@ If `load` function is implemented, `loadNext` function will be ignored.
 
 This part is used to load comic details.
 
-### Settings
+#### Settings
 
 ```javascript
     /*
@@ -635,7 +669,7 @@ This part is used to load comic details.
 This part is used to provide settings for the source.
 
 
-### Translations
+#### Translations
 
 ```javascript
     // [Optional] translations for the strings in this config

lib/components/js_ui.dart

@@ -37,9 +37,11 @@ mixin class JsUiApi {
       case 'showInputDialog':
         var title = message['title'];
         var validator = message['validator'];
+        var image = message['image'];
         if (title is! String) return;
         if (validator != null && validator is! JSInvokable) return;
-        return _showInputDialog(title, validator);
+        if (image != null && image is! String) return;
+        return _showInputDialog(title, validator, image);
       case 'showSelectDialog':
         var title = message['title'];
         var options = message['options'];
@@ -124,12 +126,13 @@ mixin class JsUiApi {
     controller?.close();
   }
 
-  Future<String?> _showInputDialog(String title, JSInvokable? validator) async {
+  Future<String?> _showInputDialog(String title, JSInvokable? validator, String? image) async {
     String? result;
     var func = validator == null ? null : JSAutoFreeFunction(validator);
     await showInputDialog(
       context: App.rootContext,
       title: title,
+      image: image,
       onConfirm: (v) {
         if (func != null) {
           var res = func.call([v]);

lib/components/message.dart

@@ -290,28 +290,30 @@ class ContentDialog extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    var content = Column(
-      mainAxisSize: MainAxisSize.min,
-      crossAxisAlignment: CrossAxisAlignment.start,
-      children: [
-        title != null
-            ? Appbar(
-                leading: IconButton(
-                  icon: const Icon(Icons.close),
-                  onPressed: dismissible ? context.pop : null,
-                ),
-                title: Text(title!),
-                backgroundColor: Colors.transparent,
-              )
-            : const SizedBox.shrink(),
-        this.content,
-        const SizedBox(height: 16),
-        Row(
-          mainAxisAlignment: MainAxisAlignment.end,
-          children: actions,
-        ).paddingRight(12),
-        const SizedBox(height: 16),
-      ],
+    var content = SingleChildScrollView(
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          title != null
+              ? Appbar(
+            leading: IconButton(
+              icon: const Icon(Icons.close),
+              onPressed: dismissible ? context.pop : null,
+            ),
+            title: Text(title!),
+            backgroundColor: Colors.transparent,
+          )
+              : const SizedBox.shrink(),
+          this.content,
+          const SizedBox(height: 16),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.end,
+            children: actions,
+          ).paddingRight(12),
+          const SizedBox(height: 16),
+        ],
+      ),
     );
     return Dialog(
       shape: RoundedRectangleBorder(
@@ -357,6 +359,7 @@ Future<void> showInputDialog({
   String confirmText = "Confirm",
   String cancelText = "Cancel",
   RegExp? inputValidator,
+  String? image,
 }) {
   var controller = TextEditingController(text: initialValue);
   bool isLoading = false;
@@ -369,14 +372,23 @@ Future<void> showInputDialog({
         builder: (context, setState) {
           return ContentDialog(
             title: title,
-            content: TextField(
-              controller: controller,
-              decoration: InputDecoration(
-                hintText: hintText,
-                border: const OutlineInputBorder(),
-                errorText: error,
-              ),
-            ).paddingHorizontal(12),
+            content: Column(
+              children: [
+                if (image != null)
+                  SizedBox(
+                    height: 108,
+                    child: Image.network(image, fit: BoxFit.none),
+                  ).paddingBottom(8),
+                TextField(
+                  controller: controller,
+                  decoration: InputDecoration(
+                    hintText: hintText,
+                    border: const OutlineInputBorder(),
+                    errorText: error,
+                  ),
+                ).paddingHorizontal(12),
+              ],
+            ),
             actions: [
               Button.filled(
                 isLoading: isLoading,

lib/foundation/app.dart

@@ -13,7 +13,7 @@ export "widget_utils.dart";
 export "context.dart";
 
 class _App {
-  final version = "1.4.2";
+  final version = "1.4.6";
 
   bool get isAndroid => Platform.isAndroid;
 

lib/foundation/appdata.dart

@@ -3,6 +3,7 @@ import 'dart:convert';
 import 'package:flutter/foundation.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:venera/foundation/app.dart';
+import 'package:venera/foundation/log.dart';
 import 'package:venera/utils/data_sync.dart';
 import 'package:venera/utils/init.dart';
 import 'package:venera/utils/io.dart';
@@ -110,21 +111,31 @@ class Appdata with Init {
     if (!await file.exists()) {
       return;
     }
-    var json = jsonDecode(await file.readAsString());
-    for (var key in (json['settings'] as Map<String, dynamic>).keys) {
-      if (json['settings'][key] != null) {
-        settings[key] = json['settings'][key];
+    try {
+      var json = jsonDecode(await file.readAsString());
+      for (var key in (json['settings'] as Map<String, dynamic>).keys) {
+        if (json['settings'][key] != null) {
+          settings[key] = json['settings'][key];
+        }
       }
+      searchHistory = List.from(json['searchHistory']);
     }
-    searchHistory = List.from(json['searchHistory']);
-    var implicitDataFile = File(FilePath.join(dataPath, 'implicitData.json'));
-    if (await implicitDataFile.exists()) {
-      try {
+    catch(e) {
+      Log.error("Appdata", "Failed to load appdata", e);
+      Log.info("Appdata", "Resetting appdata");
+      file.deleteIgnoreError();
+    }
+    try {
+      var implicitDataFile = File(FilePath.join(dataPath, 'implicitData.json'));
+      if (await implicitDataFile.exists()) {
         implicitData = jsonDecode(await implicitDataFile.readAsString());
       }
-      catch(_) {
-        // ignore
-      }
+    }
+    catch (e) {
+      Log.error("Appdata", "Failed to load implicit data", e);
+      Log.info("Appdata", "Resetting implicit data");
+      var implicitDataFile = File(FilePath.join(dataPath, 'implicitData.json'));
+      implicitDataFile.deleteIgnoreError();
     }
   }
 }
@@ -178,7 +189,7 @@ class Settings with ChangeNotifier {
     'customImageProcessing': defaultCustomImageProcessing,
     'sni': true,
     'autoAddLanguageFilter': 'none', // none, chinese, english, japanese
-    'comicSourceListUrl': defaultComicSourceUrl,
+    'comicSourceListUrl': '',
     'preloadImageCount': 4,
     'followUpdatesFolder': null,
     'initialPage': '0',
@@ -186,6 +197,8 @@ class Settings with ChangeNotifier {
     'showPageNumberInReader': true,
     'showSingleImageOnFirstPage': false,
     'enableDoubleTapToZoom': true,
+    'reverseChapterOrder': false,
+    'showSystemStatusBar': false,
   };
 
   operator [](String key) {
@@ -194,7 +207,9 @@ class Settings with ChangeNotifier {
 
   operator []=(String key, dynamic value) {
     _data[key] = value;
-    notifyListeners();
+    if (key != "dataVersion") {
+      notifyListeners();
+    }
   }
 
   @override
@@ -220,5 +235,3 @@ function processImage(image, cid, eid, page, sourceKey) {
     return futureImage;
 }
 ''';
-
-const defaultComicSourceUrl = "https://cdn.jsdelivr.net/gh/venera-app/venera-configs@latest/index.json";

lib/foundation/cache_manager.dart

@@ -1,5 +1,7 @@
+import 'dart:ffi';
+import 'dart:isolate';
+
 import 'package:crypto/crypto.dart';
-import 'package:flutter/foundation.dart';
 import 'package:sqlite3/sqlite3.dart';
 import 'package:venera/utils/io.dart';
 
@@ -21,6 +23,51 @@ class CacheManager {
 
   int _limitSize = 2 * 1024 * 1024 * 1024;
 
+  static Future<int> _scanDir(Pointer<void> dbP, String dir) async {
+    var res = await Isolate.run(() async {
+      int totalSize = 0;
+      List<String> unmanagedFiles = [];
+      var db = sqlite3.fromPointer(dbP);
+      await for (var file in Directory(dir).list(recursive: true)) {
+        if (file is File) {
+          var size = await file.length();
+          var segments = file.uri.pathSegments;
+          var name = segments.last;
+          var dir = segments.elementAtOrNull(segments.length - 2) ?? "*";
+          var res = db.select('''
+            SELECT * FROM cache
+            WHERE dir = ? AND name = ?
+          ''', [dir, name]);
+          if (res.isEmpty) {
+            unmanagedFiles.add(file.path);
+          } else {
+            totalSize += size;
+          }
+        }
+      }
+      return {
+        'totalSize': totalSize,
+        'unmanagedFiles': unmanagedFiles,
+      };
+    });
+    // delete unmanaged files
+    // Only modify the database in the main isolate to avoid deadlock
+    for (var filePath in res['unmanagedFiles'] as List<String>) {
+      var file = File(filePath);
+      if (await file.exists()) {
+        await file.delete();
+      }
+      var segments = file.uri.pathSegments;
+      var name = segments.last;
+      var dir = segments.elementAtOrNull(segments.length - 2) ?? "*";
+      CacheManager()._db.execute('''
+        DELETE FROM cache
+        WHERE dir = ? AND name = ?
+      ''', [dir, name]);
+    }
+    return res['totalSize'] as int;
+  }
+
   CacheManager._create() {
     Directory(cachePath).createSync(recursive: true);
     _db = sqlite3.open('${App.dataPath}/cache.db');
@@ -33,7 +80,7 @@ class CacheManager {
         type TEXT
       )
     ''');
-    compute((path) => Directory(path).size, cachePath).then((value) {
+    _scanDir(_db.handle, cachePath).then((value) {
       _currentSize = value;
       checkCache();
     });
@@ -50,6 +97,7 @@ class CacheManager {
   /// Write cache to disk.
   Future<void> writeCache(String key, List<int> data,
       [int duration = 7 * 24 * 60 * 60 * 1000]) async {
+    await delete(key);
     this.dir++;
     this.dir %= 100;
     var dir = this.dir;
@@ -146,10 +194,12 @@ class CacheManager {
         await file.delete();
       }
     }
-    _db.execute('''
+    if (res.isNotEmpty) {
+      _db.execute('''
       DELETE FROM cache
       WHERE expires < ?
     ''', [DateTime.now().millisecondsSinceEpoch]);
+    }
 
     while (_currentSize != null && _currentSize! > _limitSize) {
       var res = _db.select('''
@@ -157,6 +207,13 @@ class CacheManager {
         ORDER BY expires ASC
         limit 10
       ''');
+      if (res.isEmpty) {
+        // There are many files unmanaged by the cache manager.
+        // Clear all cache.
+        await Directory(cachePath).delete(recursive: true);
+        Directory(cachePath).createSync(recursive: true);
+        break;
+      }
       for (var row in res) {
         var key = row[0] as String;
         var dir = row[1] as String;

lib/foundation/comic_source/models.dart

@@ -116,6 +116,26 @@ class Comic {
   toString() => "$sourceKey@$id";
 }
 
+class ComicID {
+  final ComicType type;
+
+  final String id;
+
+  const ComicID(this.type, this.id);
+
+  @override
+  bool operator ==(Object other) {
+    if (other is! ComicID) return false;
+    return other.type == type && other.id == id;
+  }
+
+  @override
+  int get hashCode => type.hashCode ^ id.hashCode;
+
+  @override
+  String toString() => "$type@$id";
+}
+
 class ComicDetails with HistoryMixin {
   @override
   final String title;

lib/foundation/favorites.dart

@@ -653,6 +653,102 @@ class LocalFavoritesManager with ChangeNotifier {
     notifyListeners();
   }
 
+  void batchMoveFavorites(
+      String sourceFolder, String targetFolder, List<FavoriteItem> items) {
+    _modifiedAfterLastCache = true;
+
+    if (!existsFolder(sourceFolder)) {
+      throw Exception("Source folder does not exist");
+    }
+    if (!existsFolder(targetFolder)) {
+      throw Exception("Target folder does not exist");
+    }
+
+    _db.execute("BEGIN TRANSACTION");
+    var displayOrder = maxValue(targetFolder) + 1;
+    try {
+      for (var item in items) {
+        _db.execute("""
+          insert or ignore into "$targetFolder" (id, name, author, type, tags, cover_path, time, display_order)
+          select id, name, author, type, tags, cover_path, time, ?
+          from "$sourceFolder"
+          where id == ? and type == ?;
+        """, [displayOrder, item.id, item.type.value]);
+
+        _db.execute("""
+          delete from "$sourceFolder"
+          where id == ? and type == ?;
+        """, [item.id, item.type.value]);
+
+        displayOrder++;
+      }
+      notifyListeners();
+    } catch (e) {
+      Log.error("Batch Move Favorites", e.toString());
+      _db.execute("ROLLBACK");
+      return;
+    }
+    _db.execute("COMMIT");
+
+    // Update counts
+    if (counts[targetFolder] == null) {
+      counts[targetFolder] = count(targetFolder);
+    } else {
+      counts[targetFolder] = counts[targetFolder]! + items.length;
+    }
+
+    if (counts[sourceFolder] != null) {
+      counts[sourceFolder] = counts[sourceFolder]! - items.length;
+    } else {
+      counts[sourceFolder] = count(sourceFolder);
+    }
+
+    notifyListeners();
+  }
+
+  void batchCopyFavorites(
+      String sourceFolder, String targetFolder, List<FavoriteItem> items) {
+    _modifiedAfterLastCache = true;
+
+    if (!existsFolder(sourceFolder)) {
+      throw Exception("Source folder does not exist");
+    }
+    if (!existsFolder(targetFolder)) {
+      throw Exception("Target folder does not exist");
+    }
+
+    _db.execute("BEGIN TRANSACTION");
+    var displayOrder = maxValue(targetFolder) + 1;
+    try {
+      for (var item in items) {
+        _db.execute("""
+          insert or ignore into "$targetFolder" (id, name, author, type, tags, cover_path, time, display_order)
+          select id, name, author, type, tags, cover_path, time, ?
+          from "$sourceFolder"
+          where id == ? and type == ?;
+        """, [displayOrder, item.id, item.type.value]);
+
+        displayOrder++;
+      }
+      notifyListeners();
+    } catch (e) {
+      Log.error("Batch Copy Favorites", e.toString());
+      _db.execute("ROLLBACK");
+      return;
+    }
+
+    _db.execute("COMMIT");
+
+    // Update counts
+    if (counts[targetFolder] == null) {
+      counts[targetFolder] = count(targetFolder);
+    } else {
+      counts[targetFolder] = counts[targetFolder]! + items.length;
+    }
+
+    notifyListeners();
+  }
+
   /// delete a folder
   void deleteFolder(String name) {
     _modifiedAfterLastCache = true;
@@ -667,11 +763,6 @@ class LocalFavoritesManager with ChangeNotifier {
     notifyListeners();
   }
 
-  void deleteComic(String folder, FavoriteItem comic) {
-    _modifiedAfterLastCache = true;
-    deleteComicWithId(folder, comic.id, comic.type);
-  }
-
   void deleteComicWithId(String folder, String id, ComicType type) {
     _modifiedAfterLastCache = true;
     LocalFavoriteImageProvider.delete(id, type.value);
@@ -687,6 +778,55 @@ class LocalFavoritesManager with ChangeNotifier {
     notifyListeners();
   }
 
+  void batchDeleteComics(String folder, List<FavoriteItem> comics) {
+    _modifiedAfterLastCache = true;
+    _db.execute("BEGIN TRANSACTION");
+    try {
+      for (var comic in comics) {
+        LocalFavoriteImageProvider.delete(comic.id, comic.type.value);
+        _db.execute("""
+          delete from "$folder"
+          where id == ? and type == ?;
+        """, [comic.id, comic.type.value]);
+      }
+      if (counts[folder] != null) {
+        counts[folder] = counts[folder]! - comics.length;
+      } else {
+        counts[folder] = count(folder);
+      }
+    } catch (e) {
+      Log.error("Batch Delete Comics", e.toString());
+      _db.execute("ROLLBACK");
+      return;
+    }
+    _db.execute("COMMIT");
+    notifyListeners();
+  }
+
+  void batchDeleteComicsInAllFolders(List<ComicID> comics) {
+    _modifiedAfterLastCache = true;
+    _db.execute("BEGIN TRANSACTION");
+    var folderNames = _getFolderNamesWithDB();
+    try {
+      for (var comic in comics) {
+        LocalFavoriteImageProvider.delete(comic.id, comic.type.value);
+        for (var folder in folderNames) {
+          _db.execute("""
+            delete from "$folder"
+            where id == ? and type == ?;
+          """, [comic.id, comic.type.value]);
+        }
+      }
+    } catch (e) {
+      Log.error("Batch Delete Comics in All Folders", e.toString());
+      _db.execute("ROLLBACK");
+      return;
+    }
+    initCounts();
+    _db.execute("COMMIT");
+    notifyListeners();
+  }
+
   Future<int> removeInvalid() async {
     int count = 0;
     await Future.microtask(() {
@@ -714,11 +854,26 @@ class LocalFavoritesManager with ChangeNotifier {
     if (!existsFolder(folder)) {
       throw Exception("Failed to reorder: folder not found");
     }
-    deleteFolder(folder);
-    createFolder(folder);
-    for (int i = 0; i < newFolder.length; i++) {
-      addComic(folder, newFolder[i], i);
+    _db.execute("BEGIN TRANSACTION");
+    try {
+      for (int i = 0; i < newFolder.length; i++) {
+        _db.execute("""
+          update "$folder"
+          set display_order = ?
+          where id == ? and type == ?;
+        """, [
+          i,
+          newFolder[i].id,
+          newFolder[i].type.value
+        ]);
+      }
     }
+    catch (e) {
+      Log.error("Reorder", e.toString());
+      _db.execute("ROLLBACK");
+      return;
+    }
+    _db.execute("COMMIT");
     notifyListeners();
   }
 
@@ -743,6 +898,8 @@ class LocalFavoritesManager with ChangeNotifier {
       set folder_name = ?
       where folder_name == ?;
     """, [after, before]);
+    counts[after] = counts[before] ?? 0;
+    counts.remove(before);
     notifyListeners();
   }
 

lib/foundation/history.dart

@@ -10,6 +10,7 @@ import 'package:flutter/widgets.dart' show ChangeNotifier;
 import 'package:sqlite3/sqlite3.dart';
 import 'package:venera/foundation/comic_source/comic_source.dart';
 import 'package:venera/foundation/comic_type.dart';
+import 'package:venera/foundation/favorites.dart';
 import 'package:venera/foundation/image_provider/image_favorites_provider.dart';
 import 'package:venera/foundation/log.dart';
 import 'package:venera/utils/ext.dart';
@@ -132,6 +133,11 @@ class History implements Comic {
   @override
   String get description {
     var res = "";
+    if (group != null){
+      res += "${"Group @group".tlParams({
+        "group": group!,
+      })} - ";
+    }
     if (ep >= 1) {
       res += "Chapter @ep".tlParams({
         "ep": ep,
@@ -305,6 +311,31 @@ class HistoryManager with ChangeNotifier {
     notifyListeners();
   }
 
+void clearUnfavoritedHistory() {
+  _db.execute('BEGIN TRANSACTION;');
+  try {
+    final idAndTypes = _db.select("""
+      select id, type from history;
+    """);
+    for (var element in idAndTypes) {
+      final id = element["id"] as String;
+      final type = ComicType(element["type"] as int);
+      if (!LocalFavoritesManager().isExist(id, type)) {
+        _db.execute("""
+          delete from history
+          where id == ? and type == ?;
+        """, [id, type.value]);
+      }
+    }
+    _db.execute('COMMIT;');
+  } catch (e) {
+    _db.execute('ROLLBACK;');
+    rethrow;
+  }
+  updateCache();
+  notifyListeners();
+}
+
   void remove(String id, ComicType type) async {
     _db.execute("""
       delete from history
@@ -380,4 +411,23 @@ class HistoryManager with ChangeNotifier {
     isInitialized = false;
     _db.dispose();
   }
+
+  void batchDeleteHistories(List<ComicID> histories) {
+    if (histories.isEmpty) return;
+    _db.execute('BEGIN TRANSACTION;');
+    try {
+      for (var history in histories) {
+        _db.execute("""
+          delete from history
+          where id == ? and type == ?;
+        """, [history.id, history.type.value]);
+      }
+      _db.execute('COMMIT;');
+    } catch (e) {
+      _db.execute('ROLLBACK;');
+      rethrow;
+    }
+    updateCache();
+    notifyListeners();
+  }
 }

lib/foundation/js_engine.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 import 'dart:math' as math;
 import 'package:crypto/crypto.dart';
 import 'package:dio/io.dart';
+import 'package:enough_convert/enough_convert.dart';
 import 'package:flutter/foundation.dart' show protected;
 import 'package:flutter/services.dart';
 import 'package:html/parser.dart' as html;
@@ -372,6 +373,11 @@ mixin class _JSEngineApi {
       switch (type) {
         case "utf8":
           return isEncode ? utf8.encode(value) : utf8.decode(value);
+        case "gbk":
+          final codec = const GbkCodec();
+          return isEncode
+              ? Uint8List.fromList(codec.encode(value))
+              : codec.decode(value);
         case "base64":
           return isEncode ? base64Encode(value) : base64Decode(value);
         case "md5":

lib/foundation/local.dart

@@ -1,6 +1,8 @@
 import 'dart:convert';
+import 'dart:isolate';
 
 import 'package:flutter/widgets.dart' show ChangeNotifier;
+import 'package:flutter_saf/flutter_saf.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:sqlite3/sqlite3.dart';
 import 'package:venera/foundation/comic_source/comic_source.dart';
@@ -107,15 +109,42 @@ class LocalComic with HistoryMixin implements Comic {
 
   void read() {
     var history = HistoryManager().find(id, comicType);
+    int? firstDownloadedChapter;
+    int? firstDownloadedChapterGroup;
+    if (downloadedChapters.isNotEmpty && chapters != null) {
+      final chapters = this.chapters!;
+      if (chapters.isGrouped) {
+        for (int i=0; i<chapters.groupCount; i++) {
+          var group = chapters.getGroupByIndex(i);
+          var keys = group.keys.toList();
+          for (int j=0; j<keys.length; j++) {
+            var chapterId = keys[j];
+            if (downloadedChapters.contains(chapterId)) {
+              firstDownloadedChapter = j + 1;
+              firstDownloadedChapterGroup = i + 1;
+              break;
+            }
+          }
+        }
+      } else {
+        var keys = chapters.allChapters.keys;
+        for (int i = 0; i < keys.length; i++) {
+          if (downloadedChapters.contains(keys.elementAt(i))) {
+            firstDownloadedChapter = i + 1;
+            break;
+          }
+        }
+      }
+    }
     App.rootContext.to(
       () => Reader(
         type: comicType,
         cid: id,
         name: title,
         chapters: chapters,
-        initialChapter: history?.ep,
+        initialChapter: history?.ep ?? firstDownloadedChapter,
         initialPage: history?.page,
-        initialChapterGroup: history?.group,
+        initialChapterGroup: history?.group ?? firstDownloadedChapterGroup,
         history: history ??
             History.fromModel(
               model: this,
@@ -461,7 +490,7 @@ class LocalManager with ChangeNotifier {
     if (comic != null) {
       return Directory(FilePath.join(path, comic.directory));
     }
-    const comicDirectoryMaxLength = 128;
+    const comicDirectoryMaxLength = 80;
     if (name.length > comicDirectoryMaxLength) {
       name = name.substring(0, comicDirectoryMaxLength);
     }
@@ -546,6 +575,99 @@ class LocalManager with ChangeNotifier {
     remove(c.id, c.comicType);
     notifyListeners();
   }
+
+  void deleteComicChapters(LocalComic c, List<String> chapters) {
+    if (chapters.isEmpty) {
+      return;
+    }
+    var newDownloadedChapters = c.downloadedChapters
+        .where((e) => !chapters.contains(e))
+        .toList();
+    if (newDownloadedChapters.isNotEmpty) {
+      _db.execute(
+        'UPDATE comics SET downloadedChapters = ? WHERE id = ? AND comic_type = ?;',
+        [
+          jsonEncode(newDownloadedChapters),
+          c.id,
+          c.comicType.value,
+        ],
+      );
+    } else {
+      _db.execute(
+        'DELETE FROM comics WHERE id = ? AND comic_type = ?;',
+        [c.id, c.comicType.value],
+      );
+    }
+    var shouldRemovedDirs = <Directory>[];
+    for (var chapter in chapters) {
+      var dir = Directory(FilePath.join(c.baseDir, chapter));
+      if (dir.existsSync()) {
+        shouldRemovedDirs.add(dir);
+      }
+    }
+    if (shouldRemovedDirs.isNotEmpty) {
+      _deleteDirectories(shouldRemovedDirs);
+    }
+    notifyListeners();
+  }
+
+  void batchDeleteComics(List<LocalComic> comics, [bool removeFileOnDisk = true, bool removeFavoriteAndHistory = true]) {
+    if (comics.isEmpty) {
+      return;
+    }
+
+    var shouldRemovedDirs = <Directory>[];
+    _db.execute('BEGIN TRANSACTION;');
+    try {
+      for (var c in comics) {
+        if (removeFileOnDisk) {
+          var dir = Directory(FilePath.join(path, c.directory));
+          if (dir.existsSync()) {
+            shouldRemovedDirs.add(dir);
+          }
+        }
+        _db.execute(
+          'DELETE FROM comics WHERE id = ? AND comic_type = ?;',
+          [c.id, c.comicType.value],
+        );
+      }
+    }
+    catch(e, s) {
+      Log.error("LocalManager", "Failed to batch delete comics: $e", s);
+      _db.execute('ROLLBACK;');
+      return;
+    }
+    _db.execute('COMMIT;');
+
+    var comicIDs = comics.map((e) => ComicID(e.comicType, e.id)).toList();
+
+    if (removeFavoriteAndHistory) {
+      LocalFavoritesManager().batchDeleteComicsInAllFolders(comicIDs);
+      HistoryManager().batchDeleteHistories(comicIDs);
+    }
+
+    notifyListeners();
+
+    if (removeFileOnDisk) {
+      _deleteDirectories(shouldRemovedDirs);
+    }
+  }
+
+  /// Deletes the directories in a separate isolate to avoid blocking the UI thread.
+  static void _deleteDirectories(List<Directory> directories) {
+    Isolate.run(() async {
+      await SAFTaskWorker().init();
+      for (var dir in directories) {
+        try {
+          if (dir.existsSync()) {
+            await dir.delete(recursive: true);
+          }
+        } catch (e) {
+          continue;
+        }
+      }
+    });
+  }
 }
 
 enum LocalSortType {

lib/init.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 
+import 'package:display_mode/display_mode.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_saf/flutter_saf.dart';
@@ -15,6 +16,7 @@ import 'package:venera/pages/follow_updates_page.dart';
 import 'package:venera/pages/settings/settings_page.dart';
 import 'package:venera/utils/app_links.dart';
 import 'package:venera/utils/handle_text_share.dart';
+import 'package:venera/utils/opencc.dart';
 import 'package:venera/utils/tags_translation.dart';
 import 'package:venera/utils/translations.dart';
 import 'foundation/appdata.dart';
@@ -43,6 +45,7 @@ Future<void> init() async {
     TagsTranslation.readData().wait(),
     JsEngine().init().wait(),
     ComicSourceManager().init().wait(),
+    OpenCC.init(),
   ];
   await Future.wait(futures);
   CacheManager().setLimitSize(appdata.settings['cacheSize']);
@@ -50,6 +53,11 @@ Future<void> init() async {
   if (App.isAndroid) {
     handleLinks();
     handleTextShare();
+    try {
+      await FlutterDisplayMode.setHighRefreshRate();
+    } catch(e) {
+      Log.error("Display Mode", "Failed to set high refresh rate: $e");
+    }
   }
   FlutterError.onError = (details) {
     Log.error("Unhandled Exception", "${details.exception}\n${details.stack}");
@@ -95,8 +103,7 @@ Future<void> _checkAppUpdates() async {
   appdata.writeImplicitData();
   ComicSourcePage.checkComicSourceUpdate();
   if (appdata.settings['checkUpdateOnStart']) {
-    await Future.delayed(const Duration(milliseconds: 300));
-    await checkUpdateUi(false);
+    await checkUpdateUi(false, true);
   }
 }
 

lib/network/download.dart

@@ -552,7 +552,7 @@ class _ImageDownloadWrapper {
   void start() async {
     int lastBytes = 0;
     try {
-      await for (var p in ImageDownloader.loadComicImage(
+      await for (var p in ImageDownloader.loadComicImageUnwrapped(
           image, task.source.key, task.comicId, chapter)) {
         if (isCancelled) {
           return;

lib/network/images.dart

@@ -111,6 +111,11 @@ abstract class ImageDownloader {
     return stream.stream;
   }
 
+  static Stream<ImageDownloadProgress> loadComicImageUnwrapped(
+      String imageKey, String? sourceKey, String cid, String eid) {
+    return _loadComicImage(imageKey, sourceKey, cid, eid);
+  }
+
   static Stream<ImageDownloadProgress> _loadComicImage(
       String imageKey, String? sourceKey, String cid, String eid) async* {
     final cacheKey = "$imageKey@$sourceKey@$cid@$eid";
@@ -234,19 +239,30 @@ class _StreamWrapper<T> {
   }
 
   void _listen() async {
-    await for (var data in _stream) {
-      if (isClosed) {
-        break;
-      }
-      for (var controller in controllers) {
-        if (!controller.isClosed) {
-          controller.add(data);
+    try {
+      await for (var data in _stream) {
+        if (isClosed) {
+          break;
+        }
+        for (var controller in controllers) {
+          if (!controller.isClosed) {
+            controller.add(data);
+          }
         }
       }
     }
-    for (var controller in controllers) {
-      if (!controller.isClosed) {
-        controller.close();
+    catch (e) {
+      for (var controller in controllers) {
+        if (!controller.isClosed) {
+          controller.addError(e);
+        }
+      }
+    }
+    finally {
+      for (var controller in controllers) {
+        if (!controller.isClosed) {
+          controller.close();
+        }
       }
     }
     controllers.clear();

lib/pages/comic_details_page/chapters.dart

@@ -27,7 +27,7 @@ class _NormalComicChapters extends StatefulWidget {
 class _NormalComicChaptersState extends State<_NormalComicChapters> {
   late _ComicPageState state;
 
-  bool reverse = false;
+  late bool reverse;
 
   bool showAll = false;
 
@@ -38,6 +38,7 @@ class _NormalComicChaptersState extends State<_NormalComicChapters> {
   @override
   void initState() {
     super.initState();
+    reverse = appdata.settings["reverseChapterOrder"] ?? false;
     history = widget.history;
   }
 
@@ -176,7 +177,7 @@ class _GroupedComicChaptersState extends State<_GroupedComicChapters>
     with SingleTickerProviderStateMixin {
   late _ComicPageState state;
 
-  bool reverse = false;
+  late bool reverse;
 
   bool showAll = false;
 
@@ -191,6 +192,7 @@ class _GroupedComicChaptersState extends State<_GroupedComicChapters>
   @override
   void initState() {
     super.initState();
+    reverse = appdata.settings["reverseChapterOrder"] ?? false;
     history = widget.history;
     if (history?.group != null) {
       index = history!.group! - 1;

lib/pages/comic_details_page/comic_page.dart

@@ -410,20 +410,26 @@ class _ComicPageState extends LoadingState<ComicPage, ComicDetails>
                       String text;
                       if (haveChapter) {
                         var epName = "E$ep";
+                        String? groupName;
                         try {
-                          epName = group == null
-                              ? comic.chapters!.titles.elementAt(
-                            math.min(ep - 1, comic.chapters!.length - 1),
-                          )
-                              : comic.chapters!
-                              .getGroupByIndex(group - 1)
-                              .values
-                              .elementAt(ep - 1);
+                          if (group == null){
+                            epName = comic.chapters!.titles.elementAt(
+                              math.min(ep - 1, comic.chapters!.length - 1),
+                            );
+                          } else {
+                            groupName = comic.chapters!.groups.elementAt(group - 1);
+                            epName = comic.chapters!
+                                .getGroupByIndex(group - 1)
+                                .values
+                                .elementAt(ep - 1);
+                          }
                         }
                         catch(e) {
                           // ignore
                         }
-                        text = "${"Last Reading".tl}: $epName P$page";
+                        text = groupName == null
+                            ? "${"Last Reading".tl}: $epName P$page"
+                            : "${"Last Reading".tl}: $groupName $epName P$page";
                       } else {
                         text = "${"Last Reading".tl}: P$page";
                       }

lib/pages/comic_source_page.dart

@@ -51,9 +51,7 @@ class ComicSourcePage extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
-      body: const _Body(),
-    );
+    return Scaffold(body: const _Body());
   }
 }
 
@@ -87,10 +85,7 @@ class _BodyState extends State<_Body> {
   Widget build(BuildContext context) {
     return SmoothCustomScrollView(
       slivers: [
-        SliverAppbar(
-          title: Text('Comic Source'.tl),
-          style: AppbarStyle.shadow,
-        ),
+        SliverAppbar(title: Text('Comic Source'.tl), style: AppbarStyle.shadow),
         buildCard(context),
         for (var source in ComicSource.all())
           _SliverComicSource(
@@ -109,9 +104,7 @@ class _BodyState extends State<_Body> {
     showConfirmDialog(
       context: App.rootContext,
       title: "Delete".tl,
-      content: "Delete comic source '@n' ?".tlParams({
-        "n": source.name,
-      }),
+      content: "Delete comic source '@n' ?".tlParams({"n": source.name}),
       btnColor: context.colorScheme.error,
       onConfirm: () {
         var file = File(source.filePath);
@@ -133,14 +126,16 @@ class _BodyState extends State<_Body> {
             title: const Text("Reload Configs"),
             actions: [
               TextButton(
-                  onPressed: () => Navigator.pop(context),
-                  child: const Text("cancel")),
+                onPressed: () => Navigator.pop(context),
+                child: const Text("cancel"),
+              ),
               TextButton(
-                  onPressed: () async {
-                    await ComicSourceManager().reload();
-                    App.forceRebuild();
-                  },
-                  child: const Text("continue")),
+                onPressed: () async {
+                  await ComicSourceManager().reload();
+                  App.forceRebuild();
+                },
+                child: const Text("continue"),
+              ),
             ],
           ),
         );
@@ -157,8 +152,10 @@ class _BodyState extends State<_Body> {
     );
   }
 
-  static Future<void> update(ComicSource source,
-      [bool showLoading = true]) async {
+  static Future<void> update(
+    ComicSource source, [
+    bool showLoading = true,
+  ]) async {
     if (!source.url.isURL) {
       App.rootContext.showMessage(message: "Invalid url config");
       return;
@@ -174,8 +171,10 @@ class _BodyState extends State<_Body> {
       );
     }
     try {
-      var res = await AppDio().get<String>(source.url,
-          options: Options(responseType: ResponseType.plain));
+      var res = await AppDio().get<String>(
+        source.url,
+        options: Options(responseType: ResponseType.plain),
+      );
       if (cancel) return;
       controller?.close();
       await ComicSourceParser().parse(res.data!, source.filePath);
@@ -192,12 +191,11 @@ class _BodyState extends State<_Body> {
   }
 
   Widget buildCard(BuildContext context) {
-    Widget buildButton(
-        {required Widget child, required VoidCallback onPressed}) {
-      return Button.normal(
-        onPressed: onPressed,
-        child: child,
-      ).fixHeight(32);
+    Widget buildButton({
+      required Widget child,
+      required VoidCallback onPressed,
+    }) {
+      return Button.normal(onPressed: onPressed, child: child).fixHeight(32);
     }
 
     return SliverToBoxAdapter(
@@ -213,12 +211,14 @@ class _BodyState extends State<_Body> {
             ),
             TextField(
               decoration: InputDecoration(
-                  hintText: "URL",
-                  border: const UnderlineInputBorder(),
-                  contentPadding: const EdgeInsets.symmetric(horizontal: 12),
-                  suffix: IconButton(
-                      onPressed: () => handleAddSource(url),
-                      icon: const Icon(Icons.check))),
+                hintText: "URL",
+                border: const UnderlineInputBorder(),
+                contentPadding: const EdgeInsets.symmetric(horizontal: 12),
+                suffix: IconButton(
+                  onPressed: () => handleAddSource(url),
+                  icon: const Icon(Icons.check),
+                ),
+              ),
               onChanged: (value) {
                 url = value;
               },
@@ -245,10 +245,7 @@ class _BodyState extends State<_Body> {
             ),
             ListTile(
               title: Text("Help".tl),
-              trailing: buildButton(
-                onPressed: help,
-                child: Text("Open".tl),
-              ),
+              trailing: buildButton(onPressed: help, child: Text("Open".tl)),
             ),
             ListTile(
               title: Text("Check updates".tl),
@@ -277,7 +274,8 @@ class _BodyState extends State<_Body> {
 
   void help() {
     launchUrlString(
-        "https://github.com/venera-app/venera/blob/master/doc/comic_source.md");
+      "https://github.com/venera-app/venera/blob/master/doc/comic_source.md",
+    );
   }
 
   Future<void> handleAddSource(String url) async {
@@ -288,11 +286,16 @@ class _BodyState extends State<_Body> {
     splits.removeWhere((element) => element == "");
     var fileName = splits.last;
     bool cancel = false;
-    var controller = showLoadingDialog(App.rootContext,
-        onCancel: () => cancel = true, barrierDismissible: false);
+    var controller = showLoadingDialog(
+      App.rootContext,
+      onCancel: () => cancel = true,
+      barrierDismissible: false,
+    );
     try {
-      var res = await AppDio()
-          .get<String>(url, options: Options(responseType: ResponseType.plain));
+      var res = await AppDio().get<String>(
+        url,
+        options: Options(responseType: ResponseType.plain),
+      );
       if (cancel) return;
       controller.close();
       await addSource(res.data!, fileName);
@@ -332,6 +335,12 @@ class _ComicSourceListState extends State<_ComicSourceList> {
         json = null;
       });
     }
+    if (controller.text.isEmpty) {
+      setState(() {
+        json = [];
+      });
+      return;
+    }
     var dio = AppDio();
     try {
       var res = await dio.get<String>(controller.text);
@@ -343,8 +352,7 @@ class _ComicSourceListState extends State<_ComicSourceList> {
           json = jsonDecode(res.data!);
         });
       }
-    }
-    catch(e) {
+    } catch (e) {
       context.showMessage(message: "Network error".tl);
       if (mounted) {
         setState(() {
@@ -372,10 +380,7 @@ class _ComicSourceListState extends State<_ComicSourceList> {
 
   @override
   Widget build(BuildContext context) {
-    return PopUpWidgetScaffold(
-      title: "Comic Source".tl,
-      body: buildBody(),
-    );
+    return PopUpWidgetScaffold(title: "Comic Source".tl, body: buildBody());
   }
 
   Widget buildBody() {
@@ -399,32 +404,36 @@ class _ComicSourceListState extends State<_ComicSourceList> {
               children: [
                 ListTile(
                   leading: Icon(Icons.source_outlined),
-                  title: Text("Source URL".tl),
+                  title: Text("Repo URL".tl),
                 ),
                 TextField(
                   controller: controller,
                   decoration: InputDecoration(
                     hintText: "URL",
                     border: const UnderlineInputBorder(),
-                    contentPadding:
-                    const EdgeInsets.symmetric(horizontal: 12),
+                    contentPadding: const EdgeInsets.symmetric(horizontal: 12),
                   ),
                   onChanged: (value) {
                     changed = true;
                   },
                 ).paddingHorizontal(16).paddingBottom(8),
-                Text("The URL should point to a 'index.json' file".tl).paddingLeft(16),
-                Text("Do not report any issues related to sources to App repo.".tl).paddingLeft(16),
+                Text(
+                  "The URL should point to a 'index.json' file".tl,
+                ).paddingLeft(16),
+                Text(
+                  "Do not report any issues related to sources to App repo.".tl,
+                ).paddingLeft(16),
                 const SizedBox(height: 8),
                 Row(
                   mainAxisAlignment: MainAxisAlignment.end,
                   children: [
                     TextButton(
                       onPressed: () {
-                        controller.text = defaultComicSourceUrl;
-                        changed = true;
+                        launchUrlString(
+                          "https://github.com/venera-app/venera/blob/master/doc/comic_source.md",
+                        );
                       },
-                      child: Text("Reset".tl),
+                      child: Text("Help".tl),
                     ),
                     FilledButton.tonal(
                       onPressed: load,
@@ -440,7 +449,11 @@ class _ComicSourceListState extends State<_ComicSourceList> {
         }
 
         if (index == 1 && json == null) {
-          return Center(child: CircularProgressIndicator());
+          return Center(
+            child: CircularProgressIndicator(
+              strokeWidth: 2,
+            ).fixWidth(24).fixHeight(24),
+          );
         }
 
         index--;
@@ -449,28 +462,28 @@ class _ComicSourceListState extends State<_ComicSourceList> {
         var action = currentKey.contains(key)
             ? const Icon(Icons.check, size: 20).paddingRight(8)
             : Button.filled(
-          child: Text("Add".tl),
-          onPressed: () async {
-            var fileName = json![index]["fileName"];
-            var url = json![index]["url"];
-            if (url == null || !(url.toString()).isURL) {
-              var listUrl =
-              appdata.settings['comicSourceListUrl'] as String;
-              if (listUrl
-                  .replaceFirst("https://", "")
-                  .replaceFirst("http://", "")
-                  .contains("/")) {
-                url =
-                    listUrl.substring(0, listUrl.lastIndexOf("/") + 1) +
-                        fileName;
-              } else {
-                url = '$listUrl/$fileName';
-              }
-            }
-            await widget.onAdd(url);
-            setState(() {});
-          },
-        ).fixHeight(32);
+                child: Text("Add".tl),
+                onPressed: () async {
+                  var fileName = json![index]["fileName"];
+                  var url = json![index]["url"];
+                  if (url == null || !(url.toString()).isURL) {
+                    var listUrl =
+                        appdata.settings['comicSourceListUrl'] as String;
+                    if (listUrl
+                        .replaceFirst("https://", "")
+                        .replaceFirst("http://", "")
+                        .contains("/")) {
+                      url =
+                          listUrl.substring(0, listUrl.lastIndexOf("/") + 1) +
+                          fileName;
+                    } else {
+                      url = '$listUrl/$fileName';
+                    }
+                  }
+                  await widget.onAdd(url);
+                  setState(() {});
+                },
+              ).fixHeight(32);
 
         var description = json![index]["version"];
         if (json![index]["description"] != null) {
@@ -551,8 +564,7 @@ void _addAllPagesWithComicSource(ComicSource source) {
       !networkFavorites.contains(source.favoriteData!.key)) {
     networkFavorites.add(source.favoriteData!.key);
   }
-  if (source.searchPageData != null &&
-      !searchPages.contains(source.key)) {
+  if (source.searchPageData != null && !searchPages.contains(source.key)) {
     searchPages.add(source.key);
   }
 
@@ -594,15 +606,10 @@ class __EditFilePageState extends State<_EditFilePage> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: Appbar(
-        title: Text("Edit".tl),
-      ),
+      appBar: Appbar(title: Text("Edit".tl)),
       body: Column(
         children: [
-          Container(
-            height: 0.6,
-            color: context.colorScheme.outlineVariant,
-          ),
+          Container(height: 0.6, color: context.colorScheme.outlineVariant),
           Expanded(
             child: CodeEditor(
               initialValue: current,
@@ -643,9 +650,11 @@ class _CheckUpdatesButtonState extends State<_CheckUpdatesButton> {
   }
 
   void showUpdateDialog() async {
-    var text = ComicSourceManager().availableUpdates.entries.map((e) {
-      return "${ComicSource.find(e.key)!.name}: ${e.value}";
-    }).join("\n");
+    var text = ComicSourceManager().availableUpdates.entries
+        .map((e) {
+          return "${ComicSource.find(e.key)!.name}: ${e.value}";
+        })
+        .join("\n");
     bool doUpdate = false;
     await showDialog(
       context: App.rootContext,
@@ -783,10 +792,7 @@ class _SliverComicSourceState extends State<_SliverComicSource> {
           child: ListTile(
             title: Row(
               children: [
-                Text(
-                  source.name,
-                  style: ts.s18,
-                ),
+                Text(source.name, style: ts.s18),
                 const SizedBox(width: 6),
                 Container(
                   padding: const EdgeInsets.symmetric(
@@ -819,7 +825,7 @@ class _SliverComicSourceState extends State<_SliverComicSource> {
                         style: const TextStyle(fontSize: 13),
                       ),
                     ),
-                  ).paddingLeft(4)
+                  ).paddingLeft(4),
               ],
             ),
             trailing: Row(
@@ -864,15 +870,9 @@ class _SliverComicSourceState extends State<_SliverComicSource> {
           ),
         ),
         SliverToBoxAdapter(
-          child: Column(
-            children: buildSourceSettings().toList(),
-          ),
-        ),
-        SliverToBoxAdapter(
-          child: Column(
-            children: _buildAccount().toList(),
-          ),
+          child: Column(children: buildSourceSettings().toList()),
         ),
+        SliverToBoxAdapter(child: Column(children: _buildAccount().toList())),
       ],
     );
   }
@@ -898,8 +898,10 @@ class _SliverComicSourceState extends State<_SliverComicSource> {
               }
             }
           } else {
-            current = item.value['options']
-                    .firstWhere((e) => e['value'] == current)['text'] ??
+            current =
+                item.value['options'].firstWhere(
+                  (e) => e['value'] == current,
+                )['text'] ??
                 current;
           }
           yield ListTile(
@@ -907,8 +909,9 @@ class _SliverComicSourceState extends State<_SliverComicSource> {
             trailing: Select(
               current: (current as String).ts(source.key),
               values: (item.value['options'] as List)
-                  .map<String>((e) =>
-                      ((e['text'] ?? e['value']) as String).ts(source.key))
+                  .map<String>(
+                    (e) => ((e['text'] ?? e['value']) as String).ts(source.key),
+                  )
                   .toList(),
               onTap: (i) {
                 source.data['settings'][key] =
@@ -936,8 +939,11 @@ class _SliverComicSourceState extends State<_SliverComicSource> {
               source.data['settings'][key] ?? item.value['default'] ?? '';
           yield ListTile(
             title: Text((item.value['title'] as String).ts(source.key)),
-            subtitle:
-                Text(current, maxLines: 1, overflow: TextOverflow.ellipsis),
+            subtitle: Text(
+              current,
+              maxLines: 1,
+              overflow: TextOverflow.ellipsis,
+            ),
             trailing: IconButton(
               icon: const Icon(Icons.edit),
               onPressed: () {
@@ -978,10 +984,7 @@ class _SliverComicSourceState extends State<_SliverComicSource> {
         trailing: const Icon(Icons.arrow_right),
         onTap: () async {
           await context.to(
-            () => _LoginPage(
-              config: source.account!,
-              source: source,
-            ),
+            () => _LoginPage(config: source.account!, source: source),
           );
           source.saveData();
           setState(() {});
@@ -1027,9 +1030,7 @@ class _SliverComicSourceState extends State<_SliverComicSource> {
           trailing: loading
               ? const SizedBox.square(
                   dimension: 24,
-                  child: CircularProgressIndicator(
-                    strokeWidth: 2,
-                  ),
+                  child: CircularProgressIndicator(strokeWidth: 2),
                 )
               : const Icon(Icons.refresh),
         );
@@ -1070,9 +1071,7 @@ class _LoginPageState extends State<_LoginPage> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: const Appbar(
-        title: Text(''),
-      ),
+      appBar: const Appbar(title: Text('')),
       body: Center(
         child: Container(
           padding: const EdgeInsets.all(16),
@@ -1200,8 +1199,9 @@ class _LoginPageState extends State<_LoginPage> {
       setState(() {
         loading = true;
       });
-      var cookies =
-          widget.config.cookieFields!.map((e) => _cookies[e] ?? '').toList();
+      var cookies = widget.config.cookieFields!
+          .map((e) => _cookies[e] ?? '')
+          .toList();
       widget.config.validateCookies!(cookies).then((value) {
         if (value) {
           widget.source.data['account'] = 'ok';

lib/pages/favorites/favorites_page.dart

@@ -20,6 +20,7 @@ import 'package:venera/pages/reader/reader.dart';
 import 'package:venera/pages/settings/settings_page.dart';
 import 'package:venera/utils/ext.dart';
 import 'package:venera/utils/io.dart';
+import 'package:venera/utils/opencc.dart';
 import 'package:venera/utils/tags_translation.dart';
 import 'package:venera/utils/translations.dart';
 
@@ -66,6 +67,11 @@ class _FavoritesPageState extends State<FavoritesPage> {
       folder = data['name'];
       isNetwork = data['isNetwork'] ?? false;
     }
+    if (folder != null
+        && !isNetwork
+        && !LocalFavoritesManager().existsFolder(folder!)) {
+      folder = null;
+    }
     super.initState();
   }
 

lib/pages/favorites/local_favorites_page.dart

@@ -52,7 +52,9 @@ class _LocalFavoritesPageState extends State<_LocalFavoritesPage> {
       } else {
         searchResults = [];
         for (var comic in comics) {
-          if (matchKeyword(keyword, comic)) {
+          if (matchKeyword(keyword, comic) ||
+              matchKeywordT(keyword, comic) ||
+              matchKeywordS(keyword, comic)) {
             searchResults.add(comic);
           }
         }
@@ -130,6 +132,24 @@ class _LocalFavoritesPageState extends State<_LocalFavoritesPage> {
     return true;
   }
 
+  // Convert keyword to traditional Chinese to match comics
+  bool matchKeywordT(String keyword, FavoriteItem comic) {
+    if (!OpenCC.hasChineseSimplified(keyword)) {
+      return false;
+    }
+    keyword = OpenCC.simplifiedToTraditional(keyword);
+    return matchKeyword(keyword, comic);
+  }
+
+  // Convert keyword to simplified Chinese to match comics
+  bool matchKeywordS(String keyword, FavoriteItem comic) {
+    if (!OpenCC.hasChineseTraditional(keyword)) {
+      return false;
+    }
+    keyword = OpenCC.traditionalToSimplified(keyword);
+    return matchKeyword(keyword, comic);
+  }
+
   @override
   void initState() {
     favPage = context.findAncestorStateOfType<_FavoritesPageState>()!;
@@ -155,16 +175,33 @@ class _LocalFavoritesPageState extends State<_LocalFavoritesPage> {
 
   void selectAll() {
     setState(() {
-      selectedComics = comics.asMap().map((k, v) => MapEntry(v, true));
+      if (searchMode) {
+        selectedComics = searchResults.asMap().map((k, v) => MapEntry(v, true));
+      } else {
+        selectedComics = comics.asMap().map((k, v) => MapEntry(v, true));
+      }
     });
   }
 
   void invertSelection() {
     setState(() {
-      comics.asMap().forEach((k, v) {
-        selectedComics[v] = !selectedComics.putIfAbsent(v, () => false);
-      });
-      selectedComics.removeWhere((k, v) => !v);
+      if (searchMode) {
+        for (var c in searchResults) {
+          if (selectedComics.containsKey(c)) {
+            selectedComics.remove(c);
+          } else {
+            selectedComics[c] = true;
+          }
+        }
+      } else {
+        for (var c in comics) {
+          if (selectedComics.containsKey(c)) {
+            selectedComics.remove(c);
+          } else {
+            selectedComics[c] = true;
+          }
+        }
+      }
     });
   }
 
@@ -416,10 +453,12 @@ class _LocalFavoritesPageState extends State<_LocalFavoritesPage> {
                 "Selected @c comics".tlParams({"c": selectedComics.length})),
             actions: [
               MenuButton(entries: [
+                if (!isAllFolder)
                 MenuEntry(
                     icon: Icons.drive_file_move,
                     text: "Move to folder".tl,
                     onClick: () => favoriteOption('move')),
+                if (!isAllFolder)
                 MenuEntry(
                     icon: Icons.copy,
                     text: "Copy to folder".tl,
@@ -756,32 +795,26 @@ class _LocalFavoritesPageState extends State<_LocalFavoritesPage> {
                             return;
                           }
                           if (option == 'move') {
-                            for (var c in selectedComics.keys) {
-                              for (var s in selectedLocalFolders) {
-                                LocalFavoritesManager().moveFavorite(
-                                    favPage.folder as String,
-                                    s,
-                                    c.id,
-                                    (c as FavoriteItem).type);
-                              }
+                            var comics = selectedComics.keys
+                                .map((e) => e as FavoriteItem)
+                                .toList();
+                            for (var f in selectedLocalFolders) {
+                              LocalFavoritesManager().batchMoveFavorites(
+                                favPage.folder as String,
+                                f,
+                                comics,
+                              );
                             }
                           } else {
-                            for (var c in selectedComics.keys) {
-                              for (var s in selectedLocalFolders) {
-                                LocalFavoritesManager().addComic(
-                                  s,
-                                  FavoriteItem(
-                                    id: c.id,
-                                    name: c.title,
-                                    coverPath: c.cover,
-                                    author: c.subtitle ?? '',
-                                    type: ComicType((c.sourceKey == 'local'
-                                        ? 0
-                                        : c.sourceKey.hashCode)),
-                                    tags: c.tags ?? [],
-                                  ),
-                                );
-                              }
+                            var comics = selectedComics.keys
+                                .map((e) => e as FavoriteItem)
+                                .toList();
+                            for (var f in selectedLocalFolders) {
+                              LocalFavoritesManager().batchCopyFavorites(
+                                favPage.folder as String,
+                                f,
+                                comics,
+                              );
                             }
                           }
                           App.rootContext.pop();
@@ -817,13 +850,8 @@ class _LocalFavoritesPageState extends State<_LocalFavoritesPage> {
   }
 
   void _deleteComicWithId() {
-    for (var c in selectedComics.keys) {
-      LocalFavoritesManager().deleteComicWithId(
-        widget.folder,
-        c.id,
-        (c as FavoriteItem).type,
-      );
-    }
+    var toBeDeleted = selectedComics.keys.map((e) => e as FavoriteItem).toList();
+    LocalFavoritesManager().batchDeleteComics(widget.folder, toBeDeleted);
     _cancel();
   }
 }
@@ -864,7 +892,10 @@ class _ReorderComicsPageState extends State<_ReorderComicsPage> {
   @override
   void dispose() {
     if (changed) {
-      LocalFavoritesManager().reorder(comics, widget.name);
+      // Delay to ensure navigation is completed
+      Future.delayed(const Duration(milliseconds: 200), () {
+        LocalFavoritesManager().reorder(comics, widget.name);
+      });
     }
     super.dispose();
   }
@@ -899,27 +930,31 @@ class _ReorderComicsPageState extends State<_ReorderComicsPage> {
       appBar: Appbar(
         title: Text("Reorder".tl),
         actions: [
-          IconButton(
-            icon: const Icon(Icons.info_outline),
-            onPressed: () {
-              showInfoDialog(
-                context: context,
-                title: "Reorder".tl,
-                content: "Long press and drag to reorder.".tl,
-              );
-            },
-          ),
-          IconButton(
-            icon: const Icon(Icons.swap_vert),
-            onPressed: () {
-              setState(() {
-                comics = comics.reversed.toList();
-                changed = true;
-                showToast(
-                    message: "Reversed successfully".tl, context: context);
-              });
-            },
+          Tooltip(
+            message: "Information".tl,
+            child: IconButton(
+              icon: const Icon(Icons.info_outline),
+              onPressed: () {
+                showInfoDialog(
+                  context: context,
+                  title: "Reorder".tl,
+                  content: "Long press and drag to reorder.".tl,
+                );
+              },
+            ),
           ),
+          Tooltip(
+            message: "Reverse".tl,
+            child: IconButton(
+              icon: const Icon(Icons.swap_vert),
+              onPressed: () {
+                setState(() {
+                  comics = comics.reversed.toList();
+                  changed = true;
+                });
+              },
+            ),
+          )
         ],
       ),
       body: ReorderableBuilder<FavoriteItem>(

lib/pages/favorites/side_bar.dart

@@ -42,6 +42,7 @@ class _LeftBarState extends State<_LeftBar> implements FolderList {
     folders = LocalFavoritesManager().folderNames;
     findNetworkFolders();
     appdata.settings.addListener(updateFolders);
+    LocalFavoritesManager().addListener(updateFolders);
     super.initState();
   }
 
@@ -49,6 +50,7 @@ class _LeftBarState extends State<_LeftBar> implements FolderList {
   void dispose() {
     super.dispose();
     appdata.settings.removeListener(updateFolders);
+    LocalFavoritesManager().removeListener(updateFolders);
   }
 
   @override

lib/pages/history_page.dart

@@ -140,6 +140,14 @@ class _HistoryPageState extends State<HistoryPage> {
               title: 'Clear History'.tl,
               content: Text('Are you sure you want to clear your history?'.tl),
               actions: [
+                Button.outlined(
+                  onPressed: () {
+                    HistoryManager().clearUnfavoritedHistory();
+                    context.pop();
+                  },
+                  child: Text('Clear Unfavorited'.tl),
+                ),
+                const SizedBox(width: 4),
                 Button.filled(
                   color: context.colorScheme.error,
                   onPressed: () {

lib/pages/local_comics_page.dart

@@ -361,28 +361,49 @@ class _LocalComicsPageState extends State<LocalComicsPage> {
       context: App.rootContext,
       builder: (context) {
         bool removeComicFile = true;
+        bool removeFavoriteAndHistory = true;
         return StatefulBuilder(builder: (context, state) {
           return ContentDialog(
             title: "Delete".tl,
-            content: CheckboxListTile(
-              title: Text("Also remove files on disk".tl),
-              value: removeComicFile,
-              onChanged: (v) {
-                state(() {
-                  removeComicFile = !removeComicFile;
-                });
-              },
+            content: Column(
+              children: [
+                CheckboxListTile(
+                  title: Text("Remove local favorite and history".tl),
+                  value: removeFavoriteAndHistory,
+                  onChanged: (v) {
+                    state(() {
+                      removeFavoriteAndHistory = !removeFavoriteAndHistory;
+                    });
+                  },
+                ),
+                CheckboxListTile(
+                  title: Text("Also remove files on disk".tl),
+                  value: removeComicFile,
+                  onChanged: (v) {
+                    state(() {
+                      removeComicFile = !removeComicFile;
+                    });
+                  },
+                )
+              ],
             ),
             actions: [
+              if (comics.length == 1 && comics.first.hasChapters)
+                TextButton(
+                  child: Text("Delete Chapters".tl),
+                  onPressed: () {
+                    context.pop();
+                    showDeleteChaptersPopWindow(context, comics.first);
+                  },
+                ),
               FilledButton(
                 onPressed: () {
                   context.pop();
-                  for (var comic in comics) {
-                    LocalManager().deleteComic(
-                      comic,
-                      removeComicFile,
-                    );
-                  }
+                  LocalManager().batchDeleteComics(
+                    comics,
+                    removeComicFile,
+                    removeFavoriteAndHistory,
+                  );
                   isDeleted = true;
                 },
                 child: Text("Confirm".tl),
@@ -497,3 +518,59 @@ class _LocalComicsPageState extends State<LocalComicsPage> {
 
 typedef ExportComicFunc = Future<File> Function(
     LocalComic comic, String outFilePath);
+
+void showDeleteChaptersPopWindow(BuildContext context, LocalComic comic) {
+  var chapters = <String>[];
+
+  showPopUpWidget(
+    context,
+    PopUpWidgetScaffold(
+      title: "Delete Chapters".tl,
+      body: StatefulBuilder(builder: (context, setState) {
+        return Column(
+          children: [
+            Expanded(
+              child: ListView.builder(
+                itemCount: comic.downloadedChapters.length,
+                itemBuilder: (context, index) {
+                  var id = comic.downloadedChapters[index];
+                  var chapter = comic.chapters![id] ?? "Unknown Chapter";
+                  return CheckboxListTile(
+                    title: Text(chapter),
+                    value: chapters.contains(id),
+                    onChanged: (v) {
+                      setState(() {
+                        if (v == true) {
+                          chapters.add(id);
+                        } else {
+                          chapters.remove(id);
+                        }
+                      });
+                    },
+                  );
+                },
+              ),
+            ),
+            Padding(
+              padding: const EdgeInsets.all(8.0),
+              child: Row(
+                mainAxisAlignment: MainAxisAlignment.end,
+                children: [
+                  FilledButton(
+                    onPressed: () {
+                      Future.delayed(const Duration(milliseconds: 200), () {
+                        LocalManager().deleteComicChapters(comic, chapters);
+                      });
+                      App.rootContext.pop();
+                    },
+                    child: Text("Submit".tl),
+                  )
+                ],
+              ),
+            )
+          ],
+        );
+      }),
+    ),
+  );
+}

lib/pages/reader/images.dart

@@ -40,6 +40,9 @@ class _ReaderImagesState extends State<_ReaderImages> {
           reader.images = images;
           reader.isLoading = false;
           inProgress = false;
+          Future.microtask(() {
+            reader.updateHistory();
+          });
         });
       } catch (e) {
         setState(() {
@@ -65,6 +68,9 @@ class _ReaderImagesState extends State<_ReaderImages> {
           reader.images = res.data;
           reader.isLoading = false;
           inProgress = false;
+          Future.microtask(() {
+            reader.updateHistory();
+          });
         });
       }
     }
@@ -79,14 +85,21 @@ class _ReaderImagesState extends State<_ReaderImages> {
         child: CircularProgressIndicator(),
       );
     } else if (error != null) {
-      return NetworkError(
-        message: error!,
-        retry: () {
-          setState(() {
-            reader.isLoading = true;
-            error = null;
-          });
+      return GestureDetector(
+        onTap: () {
+          context.readerScaffold.openOrClose();
         },
+        child: SizedBox.expand(
+          child: NetworkError(
+            message: error!,
+            retry: () {
+              setState(() {
+                reader.isLoading = true;
+                error = null;
+              });
+            },
+          ),
+        ),
       );
     } else {
       if (reader.mode.isGallery) {
@@ -233,7 +246,7 @@ class _GalleryModeState extends State<_GalleryMode>
 
             photoViewControllers[index] ??= PhotoViewController();
 
-            if (reader.imagesPerPage == 1) {
+            if (reader.imagesPerPage == 1 || pageImages.length == 1) {
               return PhotoViewGalleryPageOptions(
                 filterQuality: FilterQuality.medium,
                 controller: photoViewControllers[index],

lib/pages/reader/reader.dart

@@ -164,10 +164,9 @@ class _ReaderState extends State<Reader>
     }
     mode = ReaderMode.fromKey(appdata.settings['readerMode']);
     history = widget.history;
-    Future.microtask(() {
-      updateHistory();
-    });
-    SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersive);
+    if (!appdata.settings['showSystemStatusBar']) {
+      SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersive);
+    }
     if (appdata.settings['enableTurnPageByVolumeKey']) {
       handleVolumeEvent();
     }
@@ -178,10 +177,18 @@ class _ReaderState extends State<Reader>
     super.initState();
   }
 
+  bool _isInitialized = false;
+
   @override
   void didChangeDependencies() {
     super.didChangeDependencies();
-    initImagesPerPage(widget.initialPage ?? 1);
+    if (!_isInitialized) {
+      initImagesPerPage(widget.initialPage ?? 1);
+      _isInitialized = true;
+    } else {
+      // For orientation changed
+      _checkImagesPerPageChange();
+    }
     initReaderWindow();
   }
 
@@ -267,7 +274,15 @@ class _ReaderState extends State<Reader>
         history!.page = images?.length ?? 1;
       } else {
         /// Record the first image of the page
-        history!.page = (page - 1) * imagesPerPage + 1;
+        if (!showSingleImageOnFirstPage || imagesPerPage == 1) {
+          history!.page = (page - 1) * imagesPerPage + 1;
+        } else {
+          if (page == 1) {
+            history!.page = 1;
+          } else {
+            history!.page = (page - 2) * imagesPerPage + 2;
+          }
+        }
       }
       history!.maxPage = images?.length ?? 1;
       if (widget.chapters?.isGrouped ?? false) {
@@ -338,6 +353,8 @@ class _ReaderState extends State<Reader>
 abstract mixin class _ImagePerPageHandler {
   late int _lastImagesPerPage;
 
+  late bool _lastOrientation;
+
   bool get isPortrait;
 
   int get page;
@@ -348,8 +365,13 @@ abstract mixin class _ImagePerPageHandler {
 
   void initImagesPerPage(int initialPage) {
     _lastImagesPerPage = imagesPerPage;
+    _lastOrientation = isPortrait;
     if (imagesPerPage != 1) {
-      page = (initialPage / imagesPerPage).ceil();
+      if (showSingleImageOnFirstPage) {
+        page = ((initialPage - 1) / imagesPerPage).ceil() + 1;
+      } else {
+        page = (initialPage / imagesPerPage).ceil();
+      }
     }
   }
 
@@ -369,19 +391,42 @@ abstract mixin class _ImagePerPageHandler {
   /// Check if the number of images per page has changed
   void _checkImagesPerPageChange() {
     int currentImagesPerPage = imagesPerPage;
-    if (_lastImagesPerPage != currentImagesPerPage) {
+    bool currentOrientation = isPortrait;
+
+    if (_lastImagesPerPage != currentImagesPerPage || _lastOrientation != currentOrientation) {
       _adjustPageForImagesPerPageChange(
           _lastImagesPerPage, currentImagesPerPage);
       _lastImagesPerPage = currentImagesPerPage;
+      _lastOrientation = currentOrientation;
     }
   }
 
   /// Adjust the page number when the number of images per page changes
   void _adjustPageForImagesPerPageChange(
       int oldImagesPerPage, int newImagesPerPage) {
-    int previousImageIndex = (page - 1) * oldImagesPerPage;
-    int newPage = (previousImageIndex ~/ newImagesPerPage) + 1;
-    page = newPage;
+    int previousImageIndex = 1;
+    if (!showSingleImageOnFirstPage || oldImagesPerPage == 1) {
+      previousImageIndex = (page - 1) * oldImagesPerPage + 1;
+    } else {
+      if (page == 1) {
+        previousImageIndex = 1;
+      } else {
+        previousImageIndex = (page - 2) * oldImagesPerPage + 2;
+      }
+    }
+
+    int newPage;
+    if (newImagesPerPage != 1) {
+      if (showSingleImageOnFirstPage) {
+        newPage = ((previousImageIndex - 1) / newImagesPerPage).ceil() + 1;
+      } else {
+        newPage = (previousImageIndex / newImagesPerPage).ceil();
+      }
+    } else {
+      newPage = previousImageIndex;
+    }
+
+    page = newPage>0 ? newPage : 1;
   }
 }
 

lib/pages/reader/scaffold.dart

@@ -107,7 +107,11 @@ class _ReaderScaffoldState extends State<_ReaderScaffold> {
     if (!_isOpen) {
       SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge);
     } else {
-      SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersive);
+      if (!appdata.settings['showSystemStatusBar']) {
+        SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersive);
+      } else {
+        SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge);
+      }
     }
     setState(() {
       _isOpen = !_isOpen;

lib/pages/settings/about.dart

@@ -96,10 +96,13 @@ Future<bool> checkUpdate() async {
   return false;
 }
 
-Future<void> checkUpdateUi([bool showMessageIfNoUpdate = true]) async {
+Future<void> checkUpdateUi([bool showMessageIfNoUpdate = true, bool delay = false]) async {
   try {
     var value = await checkUpdate();
     if (value) {
+      if (delay) {
+        await Future.delayed(const Duration(seconds: 2));
+      }
       showDialog(
           context: App.rootContext,
           builder: (context) {

lib/pages/settings/app.dart

@@ -193,12 +193,46 @@ class LogsPage extends StatefulWidget {
 }
 
 class _LogsPageState extends State<LogsPage> {
+  String logLevelToShow = "all";
+
   @override
   Widget build(BuildContext context) {
+    var logToShow = logLevelToShow == "all"
+        ? Log.logs
+        : Log.logs.where((log) => log.level.name == logLevelToShow).toList();
     return Scaffold(
       appBar: Appbar(
-        title: const Text("Logs"),
+        title: Text("Logs".tl),
         actions: [
+          IconButton(
+              onPressed: () => setState(() {
+                    final RelativeRect position = RelativeRect.fromLTRB(
+                      MediaQuery.of(context).size.width,
+                      MediaQuery.of(context).padding.top + kToolbarHeight,
+                      0.0,
+                      0.0,
+                    );
+                    showMenu(context: context, position: position, items: [
+                      PopupMenuItem(
+                          child: Text("all"),
+                          onTap: () => setState(() => logLevelToShow = "all")
+                      ),
+                      PopupMenuItem(
+                          child: Text("info"),
+                          onTap: () => setState(() => logLevelToShow = "info")
+                      ),
+                      PopupMenuItem(
+                          child: Text("warning"),
+                          onTap: () => setState(() => logLevelToShow = "warning")
+                      ),
+                      PopupMenuItem(
+                          child: Text("error"),
+                          onTap: () => setState(() => logLevelToShow = "error")
+                      ),
+                    ]);
+              }),
+              icon: const Icon(Icons.filter_list_outlined)
+          ),
           IconButton(
               onPressed: () => setState(() {
                     final RelativeRect position = RelativeRect.fromLTRB(
@@ -217,7 +251,7 @@ class _LogsPageState extends State<LogsPage> {
                         onTap: () {
                           Log.ignoreLimitation = true;
                           context.showMessage(
-                              message: "Only valid for this run");
+                              message: "Only valid for this run".tl);
                         },
                       ),
                       PopupMenuItem(
@@ -232,9 +266,9 @@ class _LogsPageState extends State<LogsPage> {
       body: ListView.builder(
         reverse: true,
         controller: ScrollController(),
-        itemCount: Log.logs.length,
+        itemCount: logToShow.length,
         itemBuilder: (context, index) {
-          index = Log.logs.length - index - 1;
+          index = logToShow.length - index - 1;
           return Padding(
             padding: const EdgeInsets.fromLTRB(16, 0, 16, 8),
             child: SelectionArea(
@@ -253,7 +287,7 @@ class _LogsPageState extends State<LogsPage> {
                         ),
                         child: Padding(
                           padding: const EdgeInsets.fromLTRB(5, 0, 5, 1),
-                          child: Text(Log.logs[index].title),
+                          child: Text(logToShow[index].title),
                         ),
                       ),
                       const SizedBox(
@@ -265,16 +299,16 @@ class _LogsPageState extends State<LogsPage> {
                             Theme.of(context).colorScheme.error,
                             Theme.of(context).colorScheme.errorContainer,
                             Theme.of(context).colorScheme.primaryContainer
-                          ][Log.logs[index].level.index],
+                          ][logToShow[index].level.index],
                           borderRadius:
                               const BorderRadius.all(Radius.circular(16)),
                         ),
                         child: Padding(
                           padding: const EdgeInsets.fromLTRB(5, 0, 5, 1),
                           child: Text(
-                            Log.logs[index].level.name,
+                            logToShow[index].level.name,
                             style: TextStyle(
-                                color: Log.logs[index].level.index == 0
+                                color: logToShow[index].level.index == 0
                                     ? Colors.white
                                     : Colors.black),
                           ),
@@ -282,14 +316,14 @@ class _LogsPageState extends State<LogsPage> {
                       ),
                     ],
                   ),
-                  Text(Log.logs[index].content),
-                  Text(Log.logs[index].time
+                  Text(logToShow[index].content),
+                  Text(logToShow[index].time
                       .toString()
                       .replaceAll(RegExp(r"\.\w+"), "")),
                   TextButton(
                     onPressed: () {
                       Clipboard.setData(
-                          ClipboardData(text: Log.logs[index].content));
+                          ClipboardData(text: logToShow[index].content));
                     },
                     child: Text("Copy".tl),
                   ),

lib/pages/settings/debug.dart

@@ -18,8 +18,8 @@ class DebugPageState extends State<DebugPage> {
       slivers: [
         SliverAppbar(title: Text("Debug".tl)),
         _CallbackSetting(
-          title: "Reload Configs",
-          actionTitle: "Reload",
+          title: "Reload Configs".tl,
+          actionTitle: "Reload".tl,
           callback: () {
             ComicSourceManager().reload();
           },

lib/pages/settings/explore_settings.dart

@@ -52,6 +52,10 @@ class _ExploreSettingsState extends State<ExploreSettings> {
           title: "Show history on comic tile".tl,
           settingKey: "showHistoryStatusOnTile",
         ).toSliver(),
+        _SwitchSetting(
+          title: "Reverse default chapter order".tl,
+          settingKey: "reverseChapterOrder",
+        ).toSliver(),
         _PopupWindowSetting(
           title: "Keyword blocking".tl,
           builder: () => const _ManageBlockingWordView(),

lib/pages/settings/reader.dart

@@ -163,6 +163,13 @@ class _ReaderSettingsState extends State<ReaderSettings> {
             widget.onChanged?.call("enableClockAndBatteryInfoInReader");
           },
         ).toSliver(),
+        _SwitchSetting(
+          title: "Show system status bar".tl,
+          settingKey: "showSystemStatusBar",
+          onChanged: () {
+            widget.onChanged?.call("showSystemStatusBar");
+          },
+        ).toSliver(),
         SelectSetting(
           title: "Quick collect image".tl,
           settingKey: "quickCollectImage",

lib/utils/data_sync.dart

@@ -22,10 +22,12 @@ class DataSync with ChangeNotifier {
     }
     LocalFavoritesManager().addListener(onDataChanged);
     ComicSourceManager().addListener(onDataChanged);
-    Future.delayed(const Duration(seconds: 1), () {
-      var controller = WindowFrame.of(App.rootContext);
-      controller.addCloseListener(_handleWindowClose);
-    });
+    if (App.isDesktop) {
+      Future.delayed(const Duration(seconds: 1), () {
+        var controller = WindowFrame.of(App.rootContext);
+        controller.addCloseListener(_handleWindowClose);
+      });
+    }
   }
 
   void onDataChanged() {

lib/utils/opencc.dart

@@ -0,0 +1,67 @@
+import 'dart:convert';
+
+import 'package:flutter/services.dart';
+
+abstract class OpenCC {
+  static late final Map<int, int> _s2t;
+  static late final Map<int, int> _t2s;
+
+  static Future<void> init() async {
+    var data = await rootBundle.load("assets/opencc.txt");
+    var txt = utf8.decode(data.buffer.asUint8List());
+    _s2t = <int, int>{};
+    _t2s = <int, int>{};
+    for (var line in txt.split('\n')) {
+      if (line.isEmpty || line.startsWith('#') || line.length != 2) continue;
+      var s = line.runes.elementAt(0);
+      var t = line.runes.elementAt(1);
+      _s2t[s] = t;
+      _t2s[t] = s;
+    }
+  }
+
+  static bool hasChineseSimplified(String text) {
+    if (text != "监禁") {
+      return false;
+    }
+    for (var rune in text.runes) {
+      if (_s2t.containsKey(rune)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  static bool hasChineseTraditional(String text) {
+    for (var rune in text.runes) {
+      if (_t2s.containsKey(rune)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  static String simplifiedToTraditional(String text) {
+    var sb = StringBuffer();
+    for (var rune in text.runes) {
+      if (_s2t.containsKey(rune)) {
+        sb.write(String.fromCharCodes([_s2t[rune]!]));
+      } else {
+        sb.write(String.fromCharCodes([rune]));
+      }
+    }
+    return sb.toString();
+  }
+
+  static String traditionalToSimplified(String text) {
+    var sb = StringBuffer();
+    for (var rune in text.runes) {
+      if (_t2s.containsKey(rune)) {
+        sb.write(String.fromCharCodes([_t2s[rune]!]));
+      } else {
+        sb.write(String.fromCharCodes([rune]));
+      }
+    }
+    return sb.toString();
+  }
+}

lib/utils/pdf.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:convert';
 import 'dart:isolate';
+import 'package:flutter_saf/flutter_saf.dart';
 import 'package:venera/foundation/app.dart';
 import 'package:venera/foundation/local.dart';
 import 'package:venera/utils/image.dart';
@@ -74,6 +75,9 @@ Future<Isolate> _runIsolate(
   return Isolate.spawn<SendPort>(
     (sendPort) => overrideIO(
       () async {
+        if (App.isAndroid) {
+          await SAFTaskWorker().init();
+        }
         var receivePort = ReceivePort();
         sendPort.send(receivePort.sendPort);
 

lib/utils/tags_translation.dart

@@ -35,8 +35,10 @@ extension TagsTranslation on String{
   /// 对tag进行处理后进行翻译: 代表'或'的分割符'|', namespace.
   static String _translateTags(String tag){
     if (tag.contains('|')) {
-      var splits = tag.split(' | ');
-      return enTagsTranslations[splits[0]]??enTagsTranslations[splits[1]]??tag;
+      var splits = tag.split('|');
+      return enTagsTranslations[splits[0].trim()]
+          ?? enTagsTranslations[splits[1].trim()]
+          ?? tag;
     } else if(tag.contains(':')) {
       var splits = tag.split(':');
       if(_haveNamespace(splits[0])) {

pubspec.lock

@@ -45,10 +45,10 @@ packages:
     dependency: transitive
     description:
       name: async
-      sha256: d2872f9c19731c2e5f10444b14686eb7cc85c76274bd6c16e1816bff9a3bab63
+      sha256: "758e6d74e971c3e5aceb4110bfd6698efc7f501675bcfe0c775459a8140750eb"
       url: "https://pub.dev"
     source: hosted
-    version: "2.12.0"
+    version: "2.13.0"
   battery_plus:
     dependency: "direct main"
     description:
@@ -170,6 +170,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.0"
+  display_mode:
+    dependency: "direct main"
+    description:
+      name: display_mode
+      sha256: "8a381f3602a09dc4e96140a0df30808631468d6d0dfff7722f67b1f83757a7cc"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.2"
   dynamic_color:
     dependency: "direct main"
     description:
@@ -178,14 +186,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.7.0"
+  enough_convert:
+    dependency: "direct main"
+    description:
+      name: enough_convert
+      sha256: c67d85ca21aaa0648f155907362430701db41f7ec8e6501a58ad9cd9d8569d01
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.6.0"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      sha256: "6a95e56b2449df2273fd8c45a662d6947ce1ebb7aafe80e550a3f68297f3cacc"
+      sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.2"
+    version: "1.3.3"
   ffi:
     dependency: transitive
     description:
@@ -425,10 +441,10 @@ packages:
     dependency: transitive
     description:
       name: flutter_rust_bridge
-      sha256: "5a5c7a5deeef2cc2ffe6076a33b0429f4a20ceac22a397297aed2b1eb067e611"
+      sha256: b416ff56002789e636244fb4cc449f587656eff995e5a7169457eb0593fcaddb
       url: "https://pub.dev"
     source: hosted
-    version: "2.9.0"
+    version: "2.10.0"
   flutter_saf:
     dependency: "direct main"
     description:
@@ -516,10 +532,10 @@ packages:
     dependency: "direct main"
     description:
       name: intl
-      sha256: d6f56758b7d3014a48af9701c085700aac781a92a87a62b1333b46d8879661cf
+      sha256: "3df61194eb431efc39c4ceba583b95633a403f46c9fd341e550ce0bfa50e9aa5"
       url: "https://pub.dev"
     source: hosted
-    version: "0.19.0"
+    version: "0.20.2"
   io:
     dependency: transitive
     description:
@@ -540,10 +556,10 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: c35baad643ba394b40aac41080300150a4f08fd0fd6a10378f8f7c6bc161acec
+      sha256: "6bb818ecbdffe216e81182c2f0714a2e62b593f4a4f13098713ff1685dfb6ab0"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.8"
+    version: "10.0.9"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
@@ -758,11 +774,11 @@ packages:
     dependency: "direct main"
     description:
       path: rhttp
-      ref: e7dca15ca543b5df49f3ada06016e874b79bce36
-      resolved-ref: e7dca15ca543b5df49f3ada06016e874b79bce36
+      ref: "1f0ff50336062c5f809c256726dc55cd30b9ce59"
+      resolved-ref: "1f0ff50336062c5f809c256726dc55cd30b9ce59"
       url: "https://github.com/wgh136/rhttp"
     source: git
-    version: "0.11.0"
+    version: "0.12.0"
   screen_retriever:
     dependency: transitive
     description:
@@ -1029,10 +1045,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: "0968250880a6c5fe7edc067ed0a13d4bae1577fe2771dcf3010d52c4a9d3ca14"
+      sha256: ddfa8d30d89985b96407efce8acbdd124701f96741f2d981ca860662f1c0dc02
       url: "https://pub.dev"
     source: hosted
-    version: "14.3.1"
+    version: "15.0.0"
   web:
     dependency: transitive
     description:
@@ -1099,5 +1115,5 @@ packages:
     source: hosted
     version: "0.0.12"
 sdks:
-  dart: ">=3.7.0 <4.0.0"
-  flutter: ">=3.29.3"
+  dart: ">=3.8.0 <4.0.0"
+  flutter: ">=3.32.6"

pubspec.yaml

@@ -2,11 +2,11 @@ name: venera
 description: "A comic app."
 publish_to: 'none'
 
-version: 1.4.2+142
+version: 1.4.6+146
 
 environment:
-  sdk: '>=3.6.0 <4.0.0'
-  flutter: 3.29.3
+  sdk: '>=3.8.0 <4.0.0'
+  flutter: 3.32.6
 
 dependencies:
   flutter:
@@ -61,7 +61,7 @@ dependencies:
   rhttp:
     git:
       url: https://github.com/wgh136/rhttp
-      ref: e7dca15ca543b5df49f3ada06016e874b79bce36
+      ref: 1f0ff50336062c5f809c256726dc55cd30b9ce59
       path: rhttp
   webdav_client:
     git:
@@ -85,6 +85,8 @@ dependencies:
   flutter_localizations:
     sdk: flutter
   yaml: ^3.1.3
+  enough_convert: ^1.6.0
+  display_mode: ^0.0.2
 
 dev_dependencies:
   flutter_test:
@@ -101,6 +103,7 @@ flutter:
     - assets/app_icon.png
     - assets/tags.json
     - assets/tags_tw.json
+    - assets/opencc.txt
 
 flutter_to_arch:
   name: Venera

windows/runner/flutter_window.cpp

@@ -98,14 +98,20 @@ bool FlutterWindow::OnCreate() {
         else
           result->Success(flutter::EncodableValue("No Proxy"));
         delete(res);
+        return;
       }
+#ifdef NDEBUG
       else if (call.method_name() == "heartBeat") {
+
           if (monitorThread == nullptr) {
               monitorThread = new std::thread{ monitorUIThread };
           }
           lastHeartbeat = std::chrono::steady_clock::now();
           result->Success();
+          return;
       }
+#endif
+      result->Success(); // Default response for unhandled method calls
   });
 
   flutter::EventChannel<> channel2(