split routes

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

@@ -0,0 +1,73 @@
+part of 'routes.dart';
+
+@TypedGoRoute<BangCategoriesRoute>(
+  name: 'BangRoute',
+  path: 'bangs',
+  routes: [
+    TypedGoRoute<BangSearchRoute>(
+      name: 'BangSearchRoute',
+      path: 'search/:searchText',
+    ),
+    TypedGoRoute<BangCategoryRoute>(
+      name: 'BangCategoryRoute',
+      path: 'category/:category',
+      routes: [
+        TypedGoRoute<BangSubCategoryRoute>(
+          name: 'BangSubCategoryRoute',
+          path: ':subCategory',
+        ),
+      ],
+    ),
+  ],
+)
+class BangCategoriesRoute extends GoRouteData {
+  @override
+  Widget build(BuildContext context, GoRouterState state) {
+    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);
+  }
+}
+
+class BangSearchRoute extends GoRouteData {
+  static const String emptySearchText = ' ';
+
+  //This should be nullable but isnt allowed by go_router
+  final String searchText;
+
+  const BangSearchRoute({this.searchText = BangSearchRoute.emptySearchText});
+
+  @override
+  Widget build(BuildContext context, GoRouterState state) {
+    return BangSearchScreen(
+      initialSearchText:
+          (searchText.isEmpty || searchText == emptySearchText)
+              ? null
+              : searchText,
+    );
+  }
+}