fix local comic display

lib/foundation/comic_type.dart

@@ -11,6 +11,14 @@ class ComicType {
   @override
   int get hashCode => value.hashCode;
 
+  String get sourceKey {
+    if(this == local) {
+      return "local";
+    } else {
+      return comicSource!.key;
+    }
+  }
+
   ComicSource? get comicSource {
     if(this == local) {
       return null;

lib/foundation/context.dart

@@ -19,6 +19,11 @@ extension Navigation on BuildContext {
         .push<T>(AppPageRoute(builder: (context) => builder()));
   }
 
+  Future<void> toReplacement<T>(Widget Function() builder) {
+    return Navigator.of(this)
+        .pushReplacement(AppPageRoute(builder: (context) => builder()));
+  }
+
   double get width => MediaQuery.of(this).size.width;
 
   double get height => MediaQuery.of(this).size.height;

lib/foundation/favorites.dart

@@ -55,7 +55,7 @@ class FavoriteItem implements Comic {
   @override
   String toString() {
     var s = "FavoriteItem: $name $author $coverPath $hashCode $tags";
-    if(s.length > 100) {
+    if (s.length > 100) {
       return s.substring(0, 100);
     }
     return s;
@@ -65,7 +65,9 @@ class FavoriteItem implements Comic {
   String get cover => coverPath;
 
   @override
-  String get description => "$time | ${type.comicSource?.name ?? "Unknown"}";
+  String get description {
+    return "$time | ${type == ComicType.local ? 'local' : type.comicSource?.name ?? "Unknown"}";
+  }
 
   @override
   String? get favoriteId => null;
@@ -77,7 +79,7 @@ class FavoriteItem implements Comic {
   int? get maxPage => null;
 
   @override
-  String get sourceKey => type.comicSource?.key ?? "Unknown:${type.value}";
+  String get sourceKey => type == ComicType.local ? 'local' : type.comicSource?.key ?? "Unknown:${type.value}";
 
   @override
   double? get stars => null;
@@ -514,6 +516,13 @@ class LocalFavoritesManager {
       update "$folder"
       set name = ?, author = ?, cover_path = ?, tags = ?
       where id == ? and type == ?;
-    """, [comic.name, comic.author, comic.coverPath, comic.tags.join(","), comic.id, comic.type.value]);
+    """, [
+      comic.name,
+      comic.author,
+      comic.coverPath,
+      comic.tags.join(","),
+      comic.id,
+      comic.type.value
+    ]);
   }
 }

lib/foundation/local.dart

@@ -79,7 +79,7 @@ class LocalComic with HistoryMixin implements Comic {
   String get description => "";
 
   @override
-  String get sourceKey => comicType.comicSource?.key ?? '_local_';
+  String get sourceKey => comicType == ComicType.local ? "local" : "";
 
   @override
   Map<String, dynamic> toJson() {
@@ -214,7 +214,7 @@ class LocalManager with ChangeNotifier {
       SELECT id FROM comics WHERE comic_type = ? 
       ORDER BY CAST(id AS INTEGER) DESC
       LIMIT 1;
-      '''[type.value],
+      ''', [type.value],
     );
     if (res.isEmpty) {
       return '1';
@@ -341,7 +341,7 @@ class LocalManager with ChangeNotifier {
     if (comic == null) return false;
     if (comic.chapters == null) return true;
     return comic.downloadedChapters
-        .contains(comic.chapters!.keys.elementAt(ep));
+        .contains(comic.chapters!.keys.elementAt(ep-1));
   }
 
   List<DownloadTask> downloadingTasks = [];