import 'package:flutter/foundation.dart';
import 'package:flutter_saf/flutter_saf.dart';
import 'package:rhttp/rhttp.dart';
import 'package:venera/foundation/app.dart';
import 'package:venera/foundation/cache_manager.dart';
import 'package:venera/foundation/comic_source/comic_source.dart';
import 'package:venera/foundation/js_engine.dart';
import 'package:venera/foundation/log.dart';
import 'package:venera/network/cookie_jar.dart';
import 'package:venera/pages/comic_source_page.dart';
import 'package:venera/pages/follow_updates_page.dart';
import 'package:venera/pages/settings/settings_page.dart';
import 'package:venera/utils/app_links.dart';
import 'package:venera/utils/tags_translation.dart';
import 'package:venera/utils/translations.dart';
import 'foundation/appdata.dart';

extension _FutureInit<T> on Future<T> {
  /// Prevent unhandled exception
  ///
  /// A unhandled exception occurred in init() will cause the app to crash.
  Future<void> wait() async {
    try {
      await this;
    } catch (e, s) {
      Log.error("init", "$e\n$s");
    }
  }
}

Future<void> init() async {
  await App.init().wait();
  SingleInstanceCookieJar("${App.dataPath}/cookie.db");
  var futures = [
    Rhttp.init(),
    SAFTaskWorker().init().wait(),
    AppTranslation.init().wait(),
    TagsTranslation.readData().wait(),
    JsEngine().init().then((_) => ComicSource.init()).wait(),
  ];
  await Future.wait(futures);
  CacheManager().setLimitSize(appdata.settings['cacheSize']);
  _checkOldConfigs();
  if (App.isAndroid) {
    handleLinks();
  }
  FlutterError.onError = (details) {
    Log.error("Unhandled Exception", "${details.exception}\n${details.stack}");
  };
}

void _checkOldConfigs() {
  if (appdata.settings['searchSources'] == null) {
    appdata.settings['searchSources'] = ComicSource.all()
        .where((e) => e.searchPageData != null)
        .map((e) => e.key)
        .toList();
  }
}

Future<void> _checkAppUpdates() async {
  var lastCheck = appdata.implicitData['lastCheckUpdate'] ?? 0;
  var now = DateTime.now().millisecondsSinceEpoch;
  if (now - lastCheck < 24 * 60 * 60 * 1000) {
    return;
  }
  appdata.implicitData['lastCheckUpdate'] = now;
  appdata.writeImplicitData();
  ComicSourcePage.checkComicSourceUpdate();
  if (appdata.settings['checkUpdateOnStart']) {
    await Future.delayed(const Duration(milliseconds: 300));
    await checkUpdateUi(false);
  }
}

void checkUpdates() {
  _checkAppUpdates();
  FollowUpdatesService.initChecker();
}