update routes; small polishments

app/lib/core/routing/routes.dart

@@ -1,6 +1,7 @@
 import 'package:bang_navigator/core/routing/dialog_page.dart';
 import 'package:bang_navigator/features/about/presentation/screens/about.dart';
-import 'package:bang_navigator/features/bangs/presentation/screens/bang.dart';
+import 'package:bang_navigator/features/bangs/presentation/screens/categories.dart';
+import 'package:bang_navigator/features/bangs/presentation/screens/list.dart';
 import 'package:bang_navigator/features/bangs/presentation/screens/search.dart';
 import 'package:bang_navigator/features/chat_archive/presentation/screens/detail.dart';
 import 'package:bang_navigator/features/chat_archive/presentation/screens/list.dart';
@@ -19,16 +20,26 @@ part 'routes.g.dart';
       name: 'AboutRoute',
       path: 'about',
     ),
-    TypedGoRoute<BangRoute>(
+    TypedGoRoute<BangCategoriesRoute>(
       name: 'BangRoute',
       path: 'bangs',
       routes: [
-        TypedGoRoute<BangSearchRoute>(
-          name: 'BangSearchRoute',
-          path: 'search',
+        TypedGoRoute<BangCategoryRoute>(
+          name: 'BangCategoryRoute',
+          path: ':category',
+          routes: [
+            TypedGoRoute<BangSubCategoryRoute>(
+              name: 'BangSubCategoryRoute',
+              path: ':subCategory',
+            ),
+          ],
         ),
       ],
     ),
+    TypedGoRoute<BangSearchRoute>(
+      name: 'BangSearchRoute',
+      path: 'bang_search',
+    ),
   ],
 )
 class KagiRoute extends GoRouteData {
@@ -45,10 +56,36 @@ class AboutRoute extends GoRouteData {
   }
 }
 
-class BangRoute extends GoRouteData {
+class BangCategoriesRoute extends GoRouteData {
   @override
   Widget build(BuildContext context, GoRouterState state) {
-    return const BangScreen();
+    return const BangCategoriesScreen();
+  }
+}
+
+class BangCategoryRoute extends GoRouteData {
+  final String category;
+
+  const BangCategoryRoute({required this.category});
+
+  @override
+  Widget build(BuildContext context, GoRouterState state) {
+    return BangListScreen(category: category);
+  }
+}
+
+class BangSubCategoryRoute extends GoRouteData {
+  final String category;
+  final String subCategory;
+
+  const BangSubCategoryRoute({
+    required this.category,
+    required this.subCategory,
+  });
+
+  @override
+  Widget build(BuildContext context, GoRouterState state) {
+    return BangListScreen(category: category, subCategory: subCategory);
   }
 }
 

app/lib/core/routing/routes.g.dart

@@ -25,15 +25,27 @@ RouteBase get $kagiRoute => GoRouteData.$route(
         GoRouteData.$route(
           path: 'bangs',
           name: 'BangRoute',
-          factory: $BangRouteExtension._fromState,
+          factory: $BangCategoriesRouteExtension._fromState,
           routes: [
             GoRouteData.$route(
-              path: 'search',
-              name: 'BangSearchRoute',
-              factory: $BangSearchRouteExtension._fromState,
+              path: ':category',
+              name: 'BangCategoryRoute',
+              factory: $BangCategoryRouteExtension._fromState,
+              routes: [
+                GoRouteData.$route(
+                  path: ':subCategory',
+                  name: 'BangSubCategoryRoute',
+                  factory: $BangSubCategoryRouteExtension._fromState,
+                ),
+              ],
             ),
           ],
         ),
+        GoRouteData.$route(
+          path: 'bang_search',
+          name: 'BangSearchRoute',
+          factory: $BangSearchRouteExtension._fromState,
+        ),
       ],
     );
 
@@ -71,8 +83,9 @@ extension $AboutRouteExtension on AboutRoute {
   void replace(BuildContext context) => context.replace(location);
 }
 
-extension $BangRouteExtension on BangRoute {
-  static BangRoute _fromState(GoRouterState state) => BangRoute();
+extension $BangCategoriesRouteExtension on BangCategoriesRoute {
+  static BangCategoriesRoute _fromState(GoRouterState state) =>
+      BangCategoriesRoute();
 
   String get location => GoRouteData.$location(
         '/bangs',
@@ -88,11 +101,51 @@ extension $BangRouteExtension on BangRoute {
   void replace(BuildContext context) => context.replace(location);
 }
 
+extension $BangCategoryRouteExtension on BangCategoryRoute {
+  static BangCategoryRoute _fromState(GoRouterState state) => BangCategoryRoute(
+        category: state.pathParameters['category']!,
+      );
+
+  String get location => GoRouteData.$location(
+        '/bangs/${Uri.encodeComponent(category)}',
+      );
+
+  void go(BuildContext context) => context.go(location);
+
+  Future<T?> push<T>(BuildContext context) => context.push<T>(location);
+
+  void pushReplacement(BuildContext context) =>
+      context.pushReplacement(location);
+
+  void replace(BuildContext context) => context.replace(location);
+}
+
+extension $BangSubCategoryRouteExtension on BangSubCategoryRoute {
+  static BangSubCategoryRoute _fromState(GoRouterState state) =>
+      BangSubCategoryRoute(
+        category: state.pathParameters['category']!,
+        subCategory: state.pathParameters['subCategory']!,
+      );
+
+  String get location => GoRouteData.$location(
+        '/bangs/${Uri.encodeComponent(category)}/${Uri.encodeComponent(subCategory)}',
+      );
+
+  void go(BuildContext context) => context.go(location);
+
+  Future<T?> push<T>(BuildContext context) => context.push<T>(location);
+
+  void pushReplacement(BuildContext context) =>
+      context.pushReplacement(location);
+
+  void replace(BuildContext context) => context.replace(location);
+}
+
 extension $BangSearchRouteExtension on BangSearchRoute {
   static BangSearchRoute _fromState(GoRouterState state) => BangSearchRoute();
 
   String get location => GoRouteData.$location(
-        '/bangs/search',
+        '/bang_search',
       );
 
   void go(BuildContext context) => context.go(location);