import 'dart:async';

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:package_info_plus/package_info_plus.dart';
import 'package:sefer_driver/controller/auth/captin/login_captin_controller.dart';
import 'package:sefer_driver/views/auth/captin/login_captin.dart';
import 'package:sefer_driver/views/home/on_boarding_page.dart';

import '../../constant/box_name.dart';
import '../../main.dart';
import '../../onbording_page.dart';
import '../../print.dart';
import '../functions/encrypt_decrypt.dart';
import '../functions/secure_storage.dart';

// Assuming you have a home page to navigate to after successful login.
// If not, you might need to adjust the navigation target.
// import 'package:sefer_driver/views/home/home_page.dart';

class SplashScreenController extends GetxController
    with GetTickerProviderStateMixin {
  late AnimationController _animationController;
  late Animation<double> animation;
  final progress = 0.0.obs;
  Timer? _progressTimer;

  String packageInfo = '';

  @override
  void onInit() {
    super.onInit();
    _setupAnimations();
    _initializeAndNavigate();
  }

  void _setupAnimations() {
    _animationController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 1500),
    );
    animation =
        CurvedAnimation(parent: _animationController, curve: Curves.easeInOut);
    _animationController.forward();
  }

  /// This is the core function that initializes the app.
  /// It runs two tasks simultaneously and navigates only when necessary.
  Future<void> _initializeAndNavigate() async {
    // Start getting package info, no need to wait for it.
    _getPackageInfo();

    const minSplashDurationMs = 4000;
    _animateProgressBar(minSplashDurationMs);

    // Define the two concurrent tasks
    final minDuration =
        Future.delayed(const Duration(milliseconds: minSplashDurationMs));
    final navigationTargetFuture = _getNavigationTarget();

    // Wait for both tasks to complete
    await Future.wait([minDuration, navigationTargetFuture]);

    // The future now returns a nullable Widget (Widget?)
    final Widget? targetPage = await navigationTargetFuture;

    // *** FIX: Only navigate if the targetPage is not null. ***
    // This prevents navigating again if the login function already handled it.
    if (targetPage != null) {
      Get.off(() => targetPage,
          transition: Transition.fadeIn,
          duration: const Duration(milliseconds: 500));
    } else {
      Log.print(
          "Navigation was handled internally by the login process. Splash screen will not navigate.");
    }
  }

  /// Animates the progress bar over a given duration.
  void _animateProgressBar(int totalMilliseconds) {
    const interval = 50;
    int elapsed = 0;
    _progressTimer?.cancel();
    _progressTimer =
        Timer.periodic(const Duration(milliseconds: interval), (timer) {
      elapsed += interval;
      progress.value = (elapsed / totalMilliseconds).clamp(0.0, 1.0);
      if (elapsed >= totalMilliseconds) {
        timer.cancel();
      }
    });
  }

  /// Determines the correct page to navigate to, or returns null if navigation
  /// is expected to be handled by an internal process (like login).
  Future<Widget?> _getNavigationTarget() async {
    try {
      // 1) Onboarding
      final doneOnboarding = box.read(BoxName.onBoarding) == 'yes';
      if (!doneOnboarding) {
        // الأفضل: رجّع الواجهة بدل Get.off داخل الدالة
        return OnBoardingPage();
      }

      // 2) Login
      final isDriverDataAvailable = box.read(BoxName.phoneDriver) != null;
      if (!isDriverDataAvailable) {
        return LoginCaptin();
      }

      final loginController = Get.put(LoginDriverController());

      final AppInitializer initializer = AppInitializer();
      await initializer.initializeApp();
      await EncryptionHelper.initialize();

      await loginController.loginWithGoogleCredential(
        box.read(BoxName.driverID).toString(),
        box.read(BoxName.emailDriver).toString(),
      );

      return null; // لأن loginWithGoogleCredential يوجّه
    } catch (e) {
      Log.print("Error during navigation logic: $e");
      return LoginCaptin();
    }
  }

  Future<void> _getPackageInfo() async {
    try {
      final info = await PackageInfo.fromPlatform();
      packageInfo = info.version;
      await box.write(BoxName.packagInfo, packageInfo);
      update(); // To update any UI element that might be listening
    } catch (e) {
      Log.print("Could not get package info: $e");
      packageInfo = '1.0.0'; // Default value
      await box.write(BoxName.packagInfo, packageInfo);
    }
  }

  @override
  void onClose() {
    _progressTimer?.cancel();
    _animationController.dispose();
    super.onClose();
  }
}