feat: add admin page

lib/app/router.dart

@@ -2,11 +2,14 @@ import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
 
+import '../viewmodels/admin_pin_view_model.dart';
 import '../viewmodels/pin_lock_view_model.dart';
+import '../views/admin_screen_view.dart';
 import '../views/bar_screen_view.dart';
 import '../views/dev_menu_view.dart';
 import '../views/error_screen_view.dart';
 import '../views/history_screen_view.dart';
+import '../views/import_names_view.dart';
 import '../views/pin_lock_view.dart';
 import '../views/product_form_view.dart';
 import '../views/product_list_view.dart';
@@ -16,26 +19,45 @@ import '../utils/app_update_util.dart';
 
 final RouteObserver<PageRoute> routeObserver = RouteObserver<PageRoute>();
 
-GoRouter createAppRouter(PinLockViewModel pinLockViewModel) {
+GoRouter createAppRouter(
+  PinLockViewModel pinLockViewModel, {
+  required AdminPinViewModel adminPinViewModel,
+}) {
   return GoRouter(
     initialLocation: '/bar',
     observers: [routeObserver, SentryNavigatorObserver()],
-    refreshListenable: pinLockViewModel,
+    refreshListenable: Listenable.merge([pinLockViewModel, adminPinViewModel]),
     redirect: (context, state) {
-      if (!pinLockViewModel.hasLoaded) return null;
+      if (!pinLockViewModel.hasLoaded || !adminPinViewModel.hasLoaded) {
+        return null;
+      }
 
       final needsPinSetup =
           !pinLockViewModel.isPinSet && pinLockViewModel.pinRequired;
-      final isLocked = pinLockViewModel.isPinSet &&
+      final isLocked =
+          pinLockViewModel.isPinSet &&
           !pinLockViewModel.isUnlocked &&
           pinLockViewModel.pinRequired;
       final mustBeOnLock = needsPinSetup || isLocked;
 
-      final goingToLock = state.matchedLocation == '/lock';
+      final location = state.uri.path;
+      final goingToLock = location == '/lock';
+      final goingToAdminLock = location == '/admin/lock';
+      final isAdminArea =
+          location == '/admin' ||
+          location.startsWith('/admin/') ||
+          location == '/products' ||
+          location.startsWith('/products/');
 
       if (mustBeOnLock && !goingToLock) return '/lock';
       if (!mustBeOnLock && goingToLock) return '/bar';
 
+      if (isAdminArea && !goingToAdminLock && !adminPinViewModel.isUnlocked) {
+        return '/admin/lock';
+      }
+
+      if (goingToAdminLock && adminPinViewModel.isUnlocked) return '/admin';
+
       return null;
     },
     routes: [
@@ -54,6 +76,31 @@ GoRouter createAppRouter(PinLockViewModel pinLockViewModel) {
 
       GoRoute(path: '/bar', builder: (context, state) => const BarScreenView()),
 
+      GoRoute(
+        path: '/admin/lock',
+        builder: (context, state) => PinEntryView(
+          mode: adminPinViewModel.isPinSet
+              ? PinEntryMode.unlock
+              : PinEntryMode.create,
+          isAdmin: true,
+          onVerify: adminPinViewModel.verify,
+          onSet: adminPinViewModel.setPin,
+          errorMessage: () => adminPinViewModel.errorMessage,
+          onSuccess: () => context.go('/admin'),
+        ),
+      ),
+
+      GoRoute(
+        path: '/admin',
+        builder: (context, state) => const AdminScreenView(),
+        routes: [
+          GoRoute(
+            path: 'import',
+            builder: (context, state) => const ImportNamesView(),
+          ),
+        ],
+      ),
+
       GoRoute(
         path: '/products',
         builder: (context, state) => const ProductListView(),
@@ -87,7 +134,8 @@ GoRouter createAppRouter(PinLockViewModel pinLockViewModel) {
         builder: (context, state) {
           final update = state.extra as UpdateInfo;
           final simulate = state.uri.queryParameters['simulate'] == 'true';
-          final simulateError = state.uri.queryParameters['simulateError'] == 'true';
+          final simulateError =
+              state.uri.queryParameters['simulateError'] == 'true';
           return UpdateProgressView(
             update: update,
             simulate: simulate,
@@ -96,10 +144,7 @@ GoRouter createAppRouter(PinLockViewModel pinLockViewModel) {
         },
       ),
 
-      GoRoute(
-        path: '/dev',
-        builder: (context, state) => const DevMenuView(),
-      ),
+      GoRoute(path: '/dev', builder: (context, state) => const DevMenuView()),
       GoRoute(
         path: '/error',
         builder: (context, state) => const ErrorScreenView(),