import 'dart:async';

import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:timezone/data/latest.dart' as tzdata;

import 'app/app_controller.dart';
import 'app/app_version.dart';
import 'services/diagnostic_log.dart';
import 'app/hepan_app.dart';
import 'app/tp_startup.dart';
import 'data/file_snapshot_store.dart';
import 'services/local_notification_service.dart';
import 'services/android_calendar_service.dart';
import 'features/school/school_session.dart';
import 'features/school/school_auth_page.dart';
import 'features/school/undergraduate/session.dart';
import 'features/school/undergraduate/auth_page.dart';

Widget buildApplication(
  AppController controller, {
  ValueNotifier<String?>? notificationSelection,
  SchoolSession? school,
  UndergraduateSession? undergraduate,
}) => HepanApp(
  controller: controller,
  notificationSelection: notificationSelection,
  school: school,
  undergraduate: undergraduate,
  undergraduateBuilder: undergraduate == null
      ? null
      : () => UndergraduateAuthPage(
          session: undergraduate,
          controller: controller,
        ),
  schoolBuilder: school == null
      ? null
      : () => SchoolAuthPage(session: school, controller: controller),
);
Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  DiagnosticLog.instance.add('app_started', fields: {'version': appVersion});
  AppController? controller;
  await launchApplication(
    bootstrap: () async {
      tzdata.initializeTimeZones();
      final selection = ValueNotifier<String?>(null);
      final gateway = PluginReminderGateway(
        onTap: (key) => selection.value = key,
      );
      final directory = await getApplicationSupportDirectory();
      unawaited(DiagnosticLog.instance.attach(directory));
      final value = AppController(
        FileSnapshotStore(directory),
        LocalNotificationService(gateway),
        AndroidCalendarService(MethodCalendarGateway()),
        DateTime.now,
      );
      await value.initialize(reconcileServices: false);
      controller = value;
      return buildApplication(
        value,
        notificationSelection: selection,
        school: SchoolSession(),
        undergraduate: UndergraduateSession(),
      );
    },
    onHomeReady: () {
      final value = controller;
      if (value != null) unawaited(value.refreshServices());
    },
  );
}