import 'dart:convert';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:image_picker/image_picker.dart';
import 'package:image_cropper/image_cropper.dart';
import 'package:image/image.dart' as img;
import '../../../constant/box_name.dart';
import 'package:path_provider/path_provider.dart';
// --- Final Submission ---
import 'dart:convert';
import 'dart:io';

import 'package:get/get.dart';
import 'package:http/http.dart' as http;
import 'package:http_parser/http_parser.dart';
import 'package:mime/mime.dart';
import 'package:path/path.dart' as p;
import '../../../constant/colors.dart';
import '../../../constant/info.dart';
import '../../../main.dart';
import '../../functions/crud.dart';
import '../../functions/encrypt_decrypt.dart';

// You can create a simple enum to manage image types
enum ImageType {
  driverLicenseFront,
  driverLicenseBack,
  carLicenseFront,
  carLicenseBack,
}

class RegistrationController extends GetxController {
  // Page Controller for managing steps
  late PageController pageController;
  var currentPage =
      0.obs; // Use .obs for reactive updates on the step indicator

  // Loading state
  var isLoading = false.obs;
  String? colorHex; // سيُملى من الدروب داون
  // Form Keys for validation
  final driverInfoFormKey = GlobalKey<FormState>();
  final carInfoFormKey = GlobalKey<FormState>();

  // STEP 1: Driver Information Controllers
  final firstNameController = TextEditingController();
  final lastNameController = TextEditingController();
  final nationalIdController = TextEditingController();
  final phoneController = TextEditingController(); // You can pre-fill this
  final driverLicenseExpiryController = TextEditingController();
  DateTime? driverLicenseExpiryDate;

  // STEP 2: Car Information Controllers
  final carPlateController = TextEditingController();
  final carMakeController = TextEditingController();
  final carModelController = TextEditingController();
  final carYearController = TextEditingController();
  final carColorController = TextEditingController();
  final carVinController = TextEditingController(); // Chassis number
  final carRegistrationExpiryController = TextEditingController();
  DateTime? carRegistrationExpiryDate;

  // STEP 3: Document Uploads
  File? driverLicenseFrontImage;
  File? driverLicenseBackImage;
  File? carLicenseFrontImage;
  File? carLicenseBackImage;

  @override
  void onInit() {
    super.onInit();
    pageController = PageController();
    // Pre-fill phone number if it exists in storage
    // phoneController.text = box.read(BoxName.phoneDriver) ?? '';
  }

  @override
  void onClose() {
    pageController.dispose();
    // Dispose all other text controllers
    super.onClose();
  }

  // --- Page Navigation ---
  void goToNextStep() {
    bool isValid = false;
    if (currentPage.value == 0) {
      // Validate Step 1
      isValid = driverInfoFormKey.currentState!.validate();
      if (isValid) {
        // Optional: Check if license is expired
        if (driverLicenseExpiryDate != null &&
            driverLicenseExpiryDate!.isBefore(DateTime.now())) {
          Get.snackbar('Expired License', 'Your driver’s license has expired.',
              snackPosition: SnackPosition.BOTTOM,
              backgroundColor: Colors.red,
              colorText: Colors.white);
          return; // Stop progression
        }
      }
    } else if (currentPage.value == 1) {
      // Validate Step 2
      isValid = carInfoFormKey.currentState!.validate();
    }

    if (isValid) {
      pageController.nextPage(
        duration: const Duration(milliseconds: 300),
        curve: Curves.easeIn,
      );
    }
  }

  void goToPreviousStep() {
    pageController.previousPage(
      duration: const Duration(milliseconds: 300),
      curve: Curves.easeIn,
    );
  }

  // --- Image Picking ---
  Future<void> pickImage(ImageType type) async {
    try {
      final picker = ImagePicker();
      final picked = await picker.pickImage(
        source: ImageSource.camera,
        imageQuality: 95, // جودة أولية من الكاميرا
        maxWidth: 3000, // نسمح بصورة كبيرة ثم نصغّر نحن
      );
      if (picked == null) return;

      // قصّ الصورة
      final cropped = await ImageCropper().cropImage(
        sourcePath: picked.path,
        uiSettings: [
          AndroidUiSettings(
            toolbarTitle: 'Cropper'.tr,
            toolbarColor: AppColor.accentColor,
            toolbarWidgetColor: AppColor.redColor,
            initAspectRatio: CropAspectRatioPreset.original,
            lockAspectRatio: false,
          ),
          IOSUiSettings(title: 'Cropper'.tr),
        ],
      );
      if (cropped == null) return; // المستخدم ألغى

      // قراءة bytes + التصحيح حسب EXIF ثم التصغير
      final rawBytes = await File(cropped.path).readAsBytes();
      final decoded = img.decodeImage(rawBytes);
      if (decoded == null) throw Exception('Decode image failed');

      // تصحيح اتجاه الصورة (EXIF)
      final fixed = img.bakeOrientation(decoded);

      // تصغير لعرض 800px (عدّل عند الحاجة)
      final resized = img.copyResize(fixed, width: 800);

      // حفظ مؤقت بصيغة JPG
      final tmpDir = await getTemporaryDirectory();
      final outPath =
          '${tmpDir.path}/doc_${DateTime.now().millisecondsSinceEpoch}.jpg';
      final outFile = File(outPath);
      await outFile.writeAsBytes(img.encodeJpg(resized, quality: 85));

      // عيّن الملف في المتغير الصحيح حسب النوع
      if (outFile != null) {
        switch (type) {
          case ImageType.driverLicenseFront:
            driverLicenseFrontImage = File(outFile.path);
            break;
          case ImageType.driverLicenseBack:
            driverLicenseBackImage = File(outFile.path);
            break;
          case ImageType.carLicenseFront:
            carLicenseFrontImage = File(outFile.path);
            break;
          case ImageType.carLicenseBack:
            carLicenseBackImage = File(outFile.path);
            break;
        }
        update(); // Use update() to refresh the GetBuilder UI
      }

      update(); // لتحديث الـ UI

      // // الإرسال للذكاء الاصطناعي
      // await sendToAI(type, imageFile: outFile);
    } catch (e) {
      Get.snackbar('Error'.tr, '${'An unexpected error occurred:'.tr} $e');
    }
  }

// ثابت: 20 لون سيارة شائع
  static const List<Map<String, String>> kCarColorOptions = [
    {'key': 'color.white', 'hex': '#FFFFFF'},
    {'key': 'color.black', 'hex': '#000000'},
    {'key': 'color.silver', 'hex': '#C0C0C0'},
    {'key': 'color.gray', 'hex': '#808080'},
    {'key': 'color.gunmetal', 'hex': '#2A3439'},
    {'key': 'color.red', 'hex': '#C62828'},
    {'key': 'color.blue', 'hex': '#1565C0'},
    {'key': 'color.navy', 'hex': '#0D47A1'},
    {'key': 'color.green', 'hex': '#2E7D32'},
    {'key': 'color.darkGreen', 'hex': '#1B5E20'},
    {'key': 'color.beige', 'hex': '#D7CCC8'},
    {'key': 'color.brown', 'hex': '#5D4037'},
    {'key': 'color.maroon', 'hex': '#800000'},
    {'key': 'color.burgundy', 'hex': '#800020'},
    {'key': 'color.yellow', 'hex': '#F9A825'},
    {'key': 'color.orange', 'hex': '#EF6C00'},
    {'key': 'color.gold', 'hex': '#D4AF37'},
    {'key': 'color.bronze', 'hex': '#CD7F32'},
    {'key': 'color.champagne', 'hex': '#EFE1C6'},
    {'key': 'color.purple', 'hex': '#6A1B9A'},
  ];

  Color hexToColor(String hex) {
    var v = hex.replaceAll('#', '');
    if (v.length == 6) v = 'FF$v';
    return Color(int.parse(v, radix: 16));
  }

  Future<void> submitRegistration() async {
    // 1) تحقق من الصور
    if (driverLicenseFrontImage == null ||
        driverLicenseBackImage == null ||
        carLicenseFrontImage == null ||
        carLicenseBackImage == null) {
      Get.snackbar(
          'Missing Documents'.tr, 'Please upload all 4 required documents.'.tr,
          snackPosition: SnackPosition.BOTTOM,
          backgroundColor: Colors.orange,
          colorText: Colors.white);
      return;
    }

    isLoading.value = true;

    final uri = Uri.parse(
      'https://intaleq.xyz/intaleq/auth/syria/driver/register_driver_and_car.php',
    );

    final client = http.Client();
    try {
      final req = http.MultipartRequest('POST', uri);

      // مهم: لا تضع Content-Type يدويًا، الـ MultipartRequest يتكفّل فيه ببناء boundary.
      final headers = {
        'Authorization':
            'Bearer ${r(box.read(BoxName.jwt)).split(AppInformation.addd)[0]}',
        'X-HMAC-Auth': '${box.read(BoxName.hmac)}',
      };
      // 2) الحقول النصية
      final fields = <String, String>{};

      // --- Driver Data ---
      _addField(fields, 'id', box.read(BoxName.driverID)?.toString());
      _addField(fields, 'first_name', firstNameController.text);
      _addField(fields, 'last_name', lastNameController.text);
      _addField(fields, 'phone', box.read(BoxName.phoneDriver) ?? '');
      _addField(fields, 'national_number', nationalIdController.text);
      _addField(fields, 'expiry_date', driverLicenseExpiryController.text);
      _addField(
          fields, 'password', 'generate_your_password_here'); // عدّل حسب منطقك
      _addField(fields, 'status', 'yet');
      _addField(fields, 'email',
          'Not specified'); // سكربت السيرفر سيحوّلها null ويبني ايميل افتراضي
      _addField(fields, 'gender', 'Male');

      // --- Car Data (مطابقة لما يتوقّعه السكربت) ---
      _addField(fields, 'vin', 'carVinController.text);');
      _addField(fields, 'car_plate', carPlateController.text);
      _addField(fields, 'make', carMakeController.text);
      _addField(fields, 'model', carModelController.text);
      _addField(fields, 'year', carYearController.text);
      _addField(fields, 'expiration_date', 'carRegistrationExpiryController');
      _addField(fields, 'color', carColorController.text);
      _addField(fields, 'fuel', 'Gasoline'); // أو حسب اختيارك
      _addField(fields, 'color_hex', colorHex); // مهم
      // لو عندك حقول إضافية مطلوبة بالسكربت (مالك المركبة / الكود اللوني / الوقود) مرّرها:
      _addField(fields, 'owner',
          firstNameController.text + ' ' + lastNameController.text);
      // if (colorHex != null)       _addField(fields, 'color_hex', colorHex);
      // if (fuelType != null)       _addField(fields, 'fuel', fuelType);
      req.headers.addAll(headers);
      req.fields.addAll(fields);

      // 3) الملفات (4 صور) — مفاتيحها مطابقة للسكربت
      Future<void> addFile(String field, File file) async {
        final mime = lookupMimeType(file.path) ?? 'image/jpeg';
        final parts = mime.split('/');
        final mediaType = MediaType(parts.first, parts.last);
        req.files.add(
          await http.MultipartFile.fromPath(
            field,
            file.path,
            filename: p.basename(file.path),
            contentType: mediaType,
          ),
        );
      }

      await addFile('driver_license_front', driverLicenseFrontImage!);
      await addFile('driver_license_back', driverLicenseBackImage!);
      await addFile('car_license_front', carLicenseFrontImage!);
      await addFile('car_license_back', carLicenseBackImage!);

      // (اختياري) هيدر للقبول بـ JSON

      // 4) الإرسال
      final streamed =
          await client.send(req).timeout(const Duration(seconds: 60));
      final resp = await http.Response.fromStream(streamed);

      // 5) فحص النتيجة
      Map<String, dynamic>? json;
      try {
        json = jsonDecode(resp.body) as Map<String, dynamic>;
      } catch (_) {}

      if (resp.statusCode == 200 &&
          json != null &&
          json['status'] == 'success') {
        // ممكن يرجّع driverID, carRegID, documents
        final driverID =
            (json['data']?['driverID'] ?? json['driverID'])?.toString();
        if (driverID != null && driverID.isNotEmpty) {
          box.write(BoxName.driverID, driverID);
        }

        Get.snackbar('Success'.tr, 'Registration completed successfully!'.tr,
            snackPosition: SnackPosition.BOTTOM,
            backgroundColor: Colors.green,
            colorText: Colors.white);

        // TODO: انتقل للصفحة التالية أو حدّث الحالة…
      } else {
        final msg =
            (json?['message'] ?? 'Registration failed. Please try again.')
                .toString();
        Get.snackbar('Error'.tr, msg,
            snackPosition: SnackPosition.BOTTOM,
            backgroundColor: Colors.red,
            colorText: Colors.white);
      }
    } catch (e) {
      Get.snackbar('Error'.tr, '${'An unexpected error occurred:'.tr} $e',
          snackPosition: SnackPosition.BOTTOM,
          backgroundColor: Colors.red,
          colorText: Colors.white);
    } finally {
      client.close();
      isLoading.value = false;
    }
  }

// Helpers
  void _addField(Map<String, String> fields, String key, String? value) {
    if (value != null && value.toString().trim().isNotEmpty) {
      fields[key] = value.toString().trim();
    }
  }
}