import 'dart:io';

import 'package:flutter/services.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:halkyon_app/halkyon_app.dart';
import 'package:halkyon_learn_flutter/src/app/app_icon_license.dart';
import 'package:halkyon_learn_flutter/src/app/learn_frame.dart';
import 'package:halkyon_learn_flutter/src/app/learn_sessions.dart';
import 'package:halkyon_learn_flutter/src/core/bloc/app_bloc_observer.dart';
import 'package:halkyon_learn_flutter/src/core/dependencies/dependencies.dart';
import 'package:halkyon_learn_flutter/src/core/device_settings/widget/device_settings_scope.dart';
import 'package:halkyon_learn_flutter/src/core/theme/cjk_fonts.dart';
import 'package:halkyon_learn_flutter/src/feature/dictionary/data/mecab_license.dart';
import 'package:halkyon_learn_flutter/src/feature/geo_map/data/cldr_license.dart';
import 'package:halkyon_learn_flutter/src/feature/kanji/data/kanjivg_license.dart';
import 'package:halkyon_ui/halkyon_ui.dart';
import 'package:material_ui/material_ui.dart';
import 'package:path/path.dart' as p;
import 'package:serverpod_flutter/serverpod_flutter.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  Bloc.observer = const AppBlocObserver();
  registerFontLicenses();
  registerCjkFontLicenses();
  registerKanjiVgLicense();
  // The flags' notice and Unicode CLDR's for the subdivisions' names.
  registerHalkyonAppLicenses();
  // Unicode CLDR's for the world map's country names, as that copy gives it.
  registerWorldMapCldrLicense();
  registerMecabLicenses();
  registerAppIconLicense();
  // The instance the build names (`--dart-define=SERVER_URL=…`, or
  // `assets/config.json`): the first offered, and the one installs from
  // before the choice go on with.
  final builtIn = Instance.parse(await getServerUrl())!;
  final device = await DeviceParts.create(builtIn: builtIn);
  final instances = InstanceChoice(
    FileInstanceStore(File(p.join(device.support, 'instances.json'))),
    builtIn: builtIn,
    forget: device.storage.forget,
    sharesStorage: device.storage.sharesWith,
  );
  await instances.load(usedBefore: device.storage.usedBefore());
  runApp(
    WhatsNewScope(
      whatsNew: WhatsNew(
        AssetWhatsNewSource(rootBundle),
        FileWhatsNewStore(File(p.join(device.support, 'whats_new.json'))),
        version: device.appVersion.version,
      ),
      // An instance chosen before: the app ran on this device already.
      usedBefore: instances.current != null,
      child: InstanceGate(
        frame: learnFrame,
        choice: instances,
        // Only an instance of Halkyon Learn: one of another Halkyon app's
        // answers too, but holds nothing of this app's.
        checker: ServerpodInstanceChecker(app: 'learn'),
        open: (instance) => Dependencies.create(instance, device),
        readLook: () async => (await device.deviceSettingsStore.read()).look,
        app: const LearnSessions(),
      ),
    ),
  );
}