Add clear unfavorited history functionality. Close #372

assets/translation.json

@@ -391,7 +391,8 @@
     "Click to select an image": "点击选择一张图片",
     "Source URL": "源地址",
     "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"
   },
   "zh_TW": {
     "Home": "首頁",
@@ -785,6 +786,7 @@
     "Click to select an image": "點擊選擇一張圖片",
     "Source URL": "源地址",
     "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"
   }
 }

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';
@@ -305,6 +306,22 @@ class HistoryManager with ChangeNotifier {
     notifyListeners();
   }
 
+  void clearUnfavoritedHistory() {
+    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]);
+      }
+    }
+  }
+
   void remove(String id, ComicType type) async {
     _db.execute("""
       delete from history

lib/pages/history_page.dart

@@ -140,6 +140,13 @@ 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),
+                ),
                 Button.filled(
                   color: context.colorScheme.error,
                   onPressed: () {