import 'dart:async';

import 'package:desktop_window/desktop_window.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter_displaymode/flutter_displaymode.dart';
import 'package:wonders/common_libs.dart';
import 'package:wonders/logic/common/platform_info.dart';
import 'package:wonders/ui/common/utils/page_routes.dart';

class AppLogic {
  /// Indicates to the rest of the app that bootstrap has not completed.
  /// The router will use this to prevent redirects while bootstrapping.
  bool isBootstrapComplete = false;

  bool get isDesktopOrTablet => PlatformInfo.isDesktopOrWeb || deviceSize.shortestSide > 480;

  /// Support portrait and landscape on desktop, web and tablets. Stick to portrait for phones.
  /// A return value of null indicated both orientations are supported.
  Axis? get supportedOrientations => isDesktopOrTablet ? null : Axis.vertical;

  Size get deviceSize {
    final w = WidgetsBinding.instance.platformDispatcher.views.first;
    return w.physicalSize / w.devicePixelRatio;
  }

  /// Initialize the app and all main actors.
  /// Loads settings, sets up services etc.
  Future<void> bootstrap() async {
    debugPrint('bootstrap app, deviceSize: $deviceSize, isTablet: $isDesktopOrTablet');

    // Set min-sizes for desktop apps
    if (PlatformInfo.isDesktop) {
      await DesktopWindow.setMinWindowSize($styles.sizes.minAppSize);
    }

    // Load any bitmaps the views might need
    await AppBitmaps.init();

    // Set the initial supported orientations
    setDeviceOrientation(supportedOrientations);

    // Set preferred refresh rate to the max possible (the OS may ignore this)
    if (PlatformInfo.isAndroid) {
      await FlutterDisplayMode.setHighRefreshRate();
    }

    // Settings
    await settingsLogic.load();

    // Localizations
    await localeLogic.load();

    // Wonders Data
    wondersLogic.init();

    // Events
    timelineLogic.init();

    // Collectibles
    await collectiblesLogic.load();

    // Flag bootStrap as complete
    isBootstrapComplete = true;

    // Load initial view (replace empty initial view which is covered by a native splash screen)
    bool showIntro = settingsLogic.hasCompletedOnboarding.value == false;
    if (showIntro) {
      appRouter.go(ScreenPaths.intro);
    } else {
      appRouter.go(ScreenPaths.home);
    }
  }

  void setDeviceOrientation(Axis? axis) {
    final orientations = <DeviceOrientation>[];
    if (axis == null || axis == Axis.vertical) {
      orientations.addAll([
        DeviceOrientation.portraitUp,
        DeviceOrientation.portraitDown,
      ]);
    }
    if (axis == null || axis == Axis.horizontal) {
      orientations.addAll([
        DeviceOrientation.landscapeLeft,
        DeviceOrientation.landscapeRight,
      ]);
    }
    SystemChrome.setPreferredOrientations(orientations);
  }

  Future<T?> showFullscreenDialogRoute<T>(BuildContext context, Widget child) async {
    return await Navigator.of(context).push<T>(
      PageRoutes.dialog<T>(child, $styles.times.pageTransition),
    );
  }
}