// Copyright 2019 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'dart:io';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/scheduler.dart' show timeDilation;
import 'package:flutter_localized_countries/flutter_localized_countries.dart';
import 'package:gallery/constants.dart';
import 'package:gallery/data/gallery_options.dart';
import 'package:gallery/l10n/gallery_localizations.dart';
import 'package:gallery/pages/backdrop.dart';
import 'package:gallery/pages/home.dart';
import 'package:gallery/pages/settings.dart';
import 'package:gallery/pages/splash.dart';
import 'package:gallery/themes/gallery_theme_data.dart';

void setOverrideForDesktop() {
  if (kIsWeb) return;

  if (Platform.isMacOS) {
    debugDefaultTargetPlatformOverride = TargetPlatform.iOS;
  } else if (Platform.isLinux || Platform.isWindows) {
    debugDefaultTargetPlatformOverride = TargetPlatform.android;
  } else if (Platform.isFuchsia) {
    debugDefaultTargetPlatformOverride = TargetPlatform.fuchsia;
  }
}

void main() {
  setOverrideForDesktop();
  runApp(GalleryApp());
}

class GalleryApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ModelBinding(
      initialModel: GalleryOptions(
        themeMode: ThemeMode.system,
        textScaleFactor: systemTextScaleFactorOption,
        customTextDirection: CustomTextDirection.localeBased,
        locale: null,
        timeDilation: timeDilation,
        platform: defaultTargetPlatform,
      ),
      child: Builder(
        builder: (context) {
          return MaterialApp(
            title: 'Gallery',
            debugShowCheckedModeBanner: false,
            themeMode: GalleryOptions.of(context).themeMode,
            theme: GalleryThemeData.lightThemeData.copyWith(
              platform: GalleryOptions.of(context).platform,
            ),
            darkTheme: GalleryThemeData.darkThemeData.copyWith(
              platform: GalleryOptions.of(context).platform,
            ),
            localizationsDelegates: [
              ...GalleryLocalizations.localizationsDelegates,
              LocaleNamesLocalizationsDelegate()
            ],
            supportedLocales: GalleryLocalizations.supportedLocales,
            locale: GalleryOptions.of(context).locale,
            localeResolutionCallback: (locale, supportedLocales) {
              deviceLocale = locale;
              return locale;
            },
            home: ApplyTextOptions(
              child: SplashPage(
                child: Backdrop(
                  frontLayer: SettingsPage(),
                  backLayer: HomePage(),
                ),
              ),
            ),
          );
        },
      ),
    );
  }
}