Stage 1: project setup, Exercise Library, both Mode designs and the Mode switch

- Flutter Android app on CookIT's stack (provider, shared_preferences, gen-l10n) - tools/exercise-import turns free-exercise-db into 876 bundled Exercises with 1,746 WebP images (20 MB); stretching -> Stretching, rest -> Workout - ZenStyle tokens per Mode: calm rounded sage/teal with breath ripples vs. dark ember-to-red with floor-tape slashes; the theme morphs at each Mode's own pace - Remembered global Mode switch, Plans / Library / History tabs Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-28 23:18:03 +01:00
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+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+import 'package:intl/intl.dart' as intl;
+
+import 'app_localizations_en.dart';
+
+// ignore_for_file: type=lint
+
+/// Callers can lookup localized strings with an instance of AppLocalizations
+/// returned by `AppLocalizations.of(context)`.
+///
+/// Applications need to include `AppLocalizations.delegate()` in their app's
+/// `localizationDelegates` list, and the locales they support in the app's
+/// `supportedLocales` list. For example:
+///
+/// ```dart
+/// import 'localization/app_localizations.dart';
+///
+/// return MaterialApp(
+///   localizationsDelegates: AppLocalizations.localizationsDelegates,
+///   supportedLocales: AppLocalizations.supportedLocales,
+///   home: MyApplicationHome(),
+/// );
+/// ```
+///
+/// ## Update pubspec.yaml
+///
+/// Please make sure to update your pubspec.yaml to include the following
+/// packages:
+///
+/// ```yaml
+/// dependencies:
+///   # Internationalization support.
+///   flutter_localizations:
+///     sdk: flutter
+///   intl: any # Use the pinned version from flutter_localizations
+///
+///   # Rest of dependencies
+/// ```
+///
+/// ## iOS Applications
+///
+/// iOS applications define key application metadata, including supported
+/// locales, in an Info.plist file that is built into the application bundle.
+/// To configure the locales supported by your app, you’ll need to edit this
+/// file.
+///
+/// First, open your project’s ios/Runner.xcworkspace Xcode workspace file.
+/// Then, in the Project Navigator, open the Info.plist file under the Runner
+/// project’s Runner folder.
+///
+/// Next, select the Information Property List item, select Add Item from the
+/// Editor menu, then select Localizations from the pop-up menu.
+///
+/// Select and expand the newly-created Localizations item then, for each
+/// locale your application supports, add a new item and select the locale
+/// you wish to add from the pop-up menu in the Value field. This list should
+/// be consistent with the languages listed in the AppLocalizations.supportedLocales
+/// property.
+abstract class AppLocalizations {
+  AppLocalizations(String locale)
+    : localeName = intl.Intl.canonicalizedLocale(locale.toString());
+
+  final String localeName;
+
+  static AppLocalizations of(BuildContext context) {
+    return Localizations.of<AppLocalizations>(context, AppLocalizations)!;
+  }
+
+  static const LocalizationsDelegate<AppLocalizations> delegate =
+      _AppLocalizationsDelegate();
+
+  /// A list of this localizations delegate along with the default localizations
+  /// delegates.
+  ///
+  /// Returns a list of localizations delegates containing this delegate along with
+  /// GlobalMaterialLocalizations.delegate, GlobalCupertinoLocalizations.delegate,
+  /// and GlobalWidgetsLocalizations.delegate.
+  ///
+  /// Additional delegates can be added by appending to this list in
+  /// MaterialApp. This list does not have to be used at all if a custom list
+  /// of delegates is preferred or required.
+  static const List<LocalizationsDelegate<dynamic>> localizationsDelegates =
+      <LocalizationsDelegate<dynamic>>[
+        delegate,
+        GlobalMaterialLocalizations.delegate,
+        GlobalCupertinoLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+      ];
+
+  /// A list of this localizations delegate's supported locales.
+  static const List<Locale> supportedLocales = <Locale>[Locale('en')];
+
+  /// No description provided for @appTitle.
+  ///
+  /// In en, this message translates to:
+  /// **'ZenXercise'**
+  String get appTitle;
+
+  /// No description provided for @modeStretching.
+  ///
+  /// In en, this message translates to:
+  /// **'Stretching'**
+  String get modeStretching;
+
+  /// No description provided for @modeWorkout.
+  ///
+  /// In en, this message translates to:
+  /// **'Workout'**
+  String get modeWorkout;
+
+  /// No description provided for @modeSwitchLabel.
+  ///
+  /// In en, this message translates to:
+  /// **'Mode'**
+  String get modeSwitchLabel;
+
+  /// No description provided for @navPlans.
+  ///
+  /// In en, this message translates to:
+  /// **'Plans'**
+  String get navPlans;
+
+  /// No description provided for @navLibrary.
+  ///
+  /// In en, this message translates to:
+  /// **'Library'**
+  String get navLibrary;
+
+  /// No description provided for @navHistory.
+  ///
+  /// In en, this message translates to:
+  /// **'History'**
+  String get navHistory;
+
+  /// No description provided for @plansTitle.
+  ///
+  /// In en, this message translates to:
+  /// **'Your plans'**
+  String get plansTitle;
+
+  /// No description provided for @plansEmptyTitle.
+  ///
+  /// In en, this message translates to:
+  /// **'No plans yet'**
+  String get plansEmptyTitle;
+
+  /// No description provided for @plansEmptyBody.
+  ///
+  /// In en, this message translates to:
+  /// **'{mode, select, stretching{Put together a stretch routine from the library and it will wait for you here.} other{Put together a workout from the library and it will wait for you here.}}'**
+  String plansEmptyBody(String mode);
+
+  /// No description provided for @libraryTitle.
+  ///
+  /// In en, this message translates to:
+  /// **'Library'**
+  String get libraryTitle;
+
+  /// No description provided for @librarySubtitle.
+  ///
+  /// In en, this message translates to:
+  /// **'{mode, select, stretching{{count, plural, =1{1 stretch} other{{count} stretches}}} other{{count, plural, =1{1 exercise} other{{count} exercises}}}}'**
+  String librarySubtitle(String mode, int count);
+
+  /// No description provided for @historyTitle.
+  ///
+  /// In en, this message translates to:
+  /// **'History'**
+  String get historyTitle;
+
+  /// No description provided for @historyEmptyTitle.
+  ///
+  /// In en, this message translates to:
+  /// **'Nothing logged yet'**
+  String get historyEmptyTitle;
+
+  /// No description provided for @historyEmptyBody.
+  ///
+  /// In en, this message translates to:
+  /// **'Finished sessions show up here with their date and duration.'**
+  String get historyEmptyBody;
+}
+
+class _AppLocalizationsDelegate
+    extends LocalizationsDelegate<AppLocalizations> {
+  const _AppLocalizationsDelegate();
+
+  @override
+  Future<AppLocalizations> load(Locale locale) {
+    return SynchronousFuture<AppLocalizations>(lookupAppLocalizations(locale));
+  }
+
+  @override
+  bool isSupported(Locale locale) =>
+      <String>['en'].contains(locale.languageCode);
+
+  @override
+  bool shouldReload(_AppLocalizationsDelegate old) => false;
+}
+
+AppLocalizations lookupAppLocalizations(Locale locale) {
+  // Lookup logic when only language code is specified.
+  switch (locale.languageCode) {
+    case 'en':
+      return AppLocalizationsEn();
+  }
+
+  throw FlutterError(
+    'AppLocalizations.delegate failed to load unsupported locale "$locale". This is likely '
+    'an issue with the localizations generation tool. Please file an issue '
+    'on GitHub with a reproducible sample app and the gen-l10n configuration '
+    'that was used.',
+  );
+}