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';
import 'app_localizations_es.dart';
import 'app_localizations_zh.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 'l10n/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'),
    Locale('es'),
    Locale('zh'),
    Locale('zh', 'TW'),
  ];

  /// No description provided for @appTitle.
  ///
  /// In en, this message translates to:
  /// **'PDF Signature'**
  String get appTitle;

  /// Generic error text with message
  ///
  /// In en, this message translates to:
  /// **'Error: {message}'**
  String errorWithMessage(String message);

  /// No description provided for @settings.
  ///
  /// In en, this message translates to:
  /// **'Settings'**
  String get settings;

  /// No description provided for @theme.
  ///
  /// In en, this message translates to:
  /// **'Theme'**
  String get theme;

  /// No description provided for @themeLight.
  ///
  /// In en, this message translates to:
  /// **'Light'**
  String get themeLight;

  /// No description provided for @themeDark.
  ///
  /// In en, this message translates to:
  /// **'Dark'**
  String get themeDark;

  /// No description provided for @themeSystem.
  ///
  /// In en, this message translates to:
  /// **'System'**
  String get themeSystem;

  /// No description provided for @language.
  ///
  /// In en, this message translates to:
  /// **'Language'**
  String get language;

  /// No description provided for @languageEnglish.
  ///
  /// In en, this message translates to:
  /// **'English'**
  String get languageEnglish;

  /// No description provided for @languageChineseTraditional.
  ///
  /// In en, this message translates to:
  /// **'Traditional Chinese'**
  String get languageChineseTraditional;

  /// No description provided for @languageSpanish.
  ///
  /// In en, this message translates to:
  /// **'Spanish'**
  String get languageSpanish;

  /// No description provided for @resetToDefaults.
  ///
  /// In en, this message translates to:
  /// **'Reset to defaults'**
  String get resetToDefaults;

  /// No description provided for @openPdf.
  ///
  /// In en, this message translates to:
  /// **'Open PDF...'**
  String get openPdf;

  /// No description provided for @prev.
  ///
  /// In en, this message translates to:
  /// **'Prev'**
  String get prev;

  /// No description provided for @next.
  ///
  /// In en, this message translates to:
  /// **'Next'**
  String get next;

  /// Label showing current page and total
  ///
  /// In en, this message translates to:
  /// **'Page {current}/{total}'**
  String pageInfo(int current, int total);

  /// No description provided for @goTo.
  ///
  /// In en, this message translates to:
  /// **'Go to:'**
  String get goTo;

  /// No description provided for @dpi.
  ///
  /// In en, this message translates to:
  /// **'DPI:'**
  String get dpi;

  /// No description provided for @saveSignedPdf.
  ///
  /// In en, this message translates to:
  /// **'Save Signed PDF'**
  String get saveSignedPdf;

  /// No description provided for @loadSignatureFromFile.
  ///
  /// In en, this message translates to:
  /// **'Load Signature from file'**
  String get loadSignatureFromFile;

  /// No description provided for @drawSignature.
  ///
  /// In en, this message translates to:
  /// **'Draw Signature'**
  String get drawSignature;

  /// No description provided for @noPdfLoaded.
  ///
  /// In en, this message translates to:
  /// **'No PDF loaded'**
  String get noPdfLoaded;

  /// No description provided for @signature.
  ///
  /// In en, this message translates to:
  /// **'Signature'**
  String get signature;

  /// No description provided for @lockAspectRatio.
  ///
  /// In en, this message translates to:
  /// **'Lock aspect ratio'**
  String get lockAspectRatio;

  /// No description provided for @backgroundRemoval.
  ///
  /// In en, this message translates to:
  /// **'Background removal'**
  String get backgroundRemoval;

  /// No description provided for @contrast.
  ///
  /// In en, this message translates to:
  /// **'Contrast'**
  String get contrast;

  /// No description provided for @brightness.
  ///
  /// In en, this message translates to:
  /// **'Brightness'**
  String get brightness;

  /// No description provided for @exportingPleaseWait.
  ///
  /// In en, this message translates to:
  /// **'Exporting... Please wait'**
  String get exportingPleaseWait;

  /// No description provided for @nothingToSaveYet.
  ///
  /// In en, this message translates to:
  /// **'Nothing to save yet'**
  String get nothingToSaveYet;

  /// Snackbar text showing where file saved
  ///
  /// In en, this message translates to:
  /// **'Saved: {path}'**
  String savedWithPath(String path);

  /// No description provided for @failedToSavePdf.
  ///
  /// In en, this message translates to:
  /// **'Failed to save PDF'**
  String get failedToSavePdf;

  /// No description provided for @downloadStarted.
  ///
  /// In en, this message translates to:
  /// **'Download started'**
  String get downloadStarted;

  /// No description provided for @failedToGeneratePdf.
  ///
  /// In en, this message translates to:
  /// **'Failed to generate PDF'**
  String get failedToGeneratePdf;

  /// No description provided for @invalidOrUnsupportedFile.
  ///
  /// In en, this message translates to:
  /// **'Invalid or unsupported file'**
  String get invalidOrUnsupportedFile;

  /// No description provided for @confirm.
  ///
  /// In en, this message translates to:
  /// **'Confirm'**
  String get confirm;

  /// No description provided for @undo.
  ///
  /// In en, this message translates to:
  /// **'Undo'**
  String get undo;

  /// No description provided for @clear.
  ///
  /// In en, this message translates to:
  /// **'Clear'**
  String get clear;
}

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', 'es', 'zh'].contains(locale.languageCode);

  @override
  bool shouldReload(_AppLocalizationsDelegate old) => false;
}

AppLocalizations lookupAppLocalizations(Locale locale) {
  // Lookup logic when language+country codes are specified.
  switch (locale.languageCode) {
    case 'zh':
      {
        switch (locale.countryCode) {
          case 'TW':
            return AppLocalizationsZhTw();
        }
        break;
      }
  }

  // Lookup logic when only language code is specified.
  switch (locale.languageCode) {
    case 'en':
      return AppLocalizationsEn();
    case 'es':
      return AppLocalizationsEs();
    case 'zh':
      return AppLocalizationsZh();
  }

  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.',
  );
}