Update codebase
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Hamza-Ayed
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// food_controller.dart — حالة تبويب الطعام (تصفح، سلة، تتبّع الطلب)
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import 'dart:async';
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import 'dart:math';
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import 'package:get/get.dart';
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import '../../constant/box_name.dart';
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import '../../main.dart';
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import '../../views/widgets/error_snakbar.dart';
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import 'food_models.dart';
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import 'food_service.dart';
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class FoodController extends GetxController {
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// ── تصفح ──
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bool isLoadingMerchants = false;
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List<FoodMerchant> merchants = [];
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String city = _defaultCityForCountry();
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// ── تفاصيل مطعم ──
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bool isLoadingMenu = false;
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FoodMerchant? selectedMerchant;
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List<FoodMenuCategory> categories = [];
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// ── السلة (مقيّدة بمطعم واحد فقط) ──
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int? cartMerchantId;
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final Map<String, FoodCartLine> _cart = {};
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List<FoodCartLine> get cartLines => _cart.values.toList();
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int get cartItemsCount => _cart.values.fold(0, (sum, l) => sum + l.quantity);
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int get cartTotal => _cart.values.fold(0, (sum, l) => sum + l.lineTotal);
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// ── عرض السعر الحالي ──
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FoodQuote? currentQuote;
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bool isQuoting = false;
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// ── الطلب النشط (تتبّع) ──
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FoodOrder? activeOrder;
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Timer? _statusPollTimer;
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static String _defaultCityForCountry() {
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final country = box.read(BoxName.countryCode);
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switch (country) {
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case 'SY':
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return 'دمشق';
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case 'EG':
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return 'القاهرة';
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default:
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return 'عمان';
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}
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}
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void setCity(String newCity) {
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if (newCity.trim().isEmpty) return;
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city = newCity.trim();
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fetchMerchants();
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}
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Future<void> fetchMerchants({String? category}) async {
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isLoadingMerchants = true;
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update();
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final res = await FoodService.browseMerchants(city: city, category: category);
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isLoadingMerchants = false;
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if (res.success) {
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merchants = res.data ?? [];
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} else {
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merchants = [];
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mySnackbarWarning(res.message);
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}
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update();
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}
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Future<void> searchMerchants(String query) async {
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if (query.trim().length < 2) return;
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isLoadingMerchants = true;
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update();
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final res = await FoodService.searchMerchants(city: city, query: query.trim());
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isLoadingMerchants = false;
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if (res.success) merchants = res.data ?? [];
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update();
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}
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Future<void> openMerchant(int merchantId) async {
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isLoadingMenu = true;
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selectedMerchant = null;
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categories = [];
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update();
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final res = await FoodService.merchantDetails(merchantId);
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isLoadingMenu = false;
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if (res.success && res.data != null) {
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selectedMerchant = res.data!['merchant'] as FoodMerchant;
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categories = res.data!['categories'] as List<FoodMenuCategory>;
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} else {
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mySnackbarWarning(res.message);
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}
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update();
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}
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// ── إدارة السلة ──
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bool addToCart(FoodMenuItem item, {int quantity = 1, Map<int, List<String>>? options}) {
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final line = FoodCartLine(item: item, quantity: quantity, selectedOptions: options ?? {});
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final existing = _cart[line.lineKey];
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if (existing != null) {
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existing.quantity += quantity;
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} else {
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_cart[line.lineKey] = line;
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}
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currentQuote = null; // أي تعديل بالسلة يُبطل العرض الموقّع القديم
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update();
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return true;
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}
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// يُستدعى من صفحة المطعم مع فحص أن السلة إما فارغة أو لنفس المطعم
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bool addToCartForMerchant(int merchantId, FoodMenuItem item,
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{int quantity = 1, Map<int, List<String>>? options}) {
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if (_cart.isNotEmpty && cartMerchantId != null && cartMerchantId != merchantId) {
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mySnackbarWarning(box.read(BoxName.lang) == 'ar'
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? 'سلتك تحتوي أصنافاً من مطعم آخر. أفرغها أولاً لإضافة من هذا المطعم.'
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: 'Your cart has items from another restaurant. Clear it first.');
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return false;
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}
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cartMerchantId = merchantId;
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return addToCart(item, quantity: quantity, options: options);
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}
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void removeFromCart(String lineKey) {
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_cart.remove(lineKey);
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if (_cart.isEmpty) cartMerchantId = null;
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currentQuote = null;
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update();
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}
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void updateQuantity(String lineKey, int quantity) {
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final line = _cart[lineKey];
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if (line == null) return;
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if (quantity <= 0) {
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removeFromCart(lineKey);
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return;
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}
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line.quantity = quantity;
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currentQuote = null;
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update();
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}
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void clearCart() {
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_cart.clear();
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cartMerchantId = null;
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currentQuote = null;
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update();
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}
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Future<bool> refreshQuote() async {
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if (cartMerchantId == null || cartLines.isEmpty) return false;
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isQuoting = true;
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update();
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final res = await FoodService.getQuote(merchantId: cartMerchantId!, lines: cartLines);
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isQuoting = false;
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if (res.success && res.data != null) {
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currentQuote = res.data;
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update();
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return true;
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}
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currentQuote = null;
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mySnackbarWarning(res.message);
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update();
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return false;
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}
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bool _placingOrder = false;
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bool get isPlacingOrder => _placingOrder;
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Future<int?> placeOrder({
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required String deliveryAddress,
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required double deliveryLat,
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required double deliveryLng,
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required String paymentMethod,
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String? customerNote,
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}) async {
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if (currentQuote == null) {
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final ok = await refreshQuote();
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if (!ok || currentQuote == null) return null;
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}
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_placingOrder = true;
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update();
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final res = await FoodService.createOrder(
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quoteToken: currentQuote!.quoteToken,
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clientOrderUuid: _generateUuidV4(),
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deliveryAddress: deliveryAddress,
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deliveryLat: deliveryLat,
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deliveryLng: deliveryLng,
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paymentMethod: paymentMethod,
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customerNote: customerNote,
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);
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_placingOrder = false;
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update();
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if (res.success && res.data != null) {
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clearCart();
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startTrackingOrder(res.data!);
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return res.data;
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}
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mySnackbarWarning(res.message);
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return null;
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}
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// ── تتبّع الطلب (polling — السوكيت ليس مصدر الحقيقة، انظر ملاحظة backend) ──
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void startTrackingOrder(int orderId) {
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_statusPollTimer?.cancel();
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_pollOrderStatus(orderId);
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_statusPollTimer = Timer.periodic(const Duration(seconds: 5), (_) => _pollOrderStatus(orderId));
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}
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Future<void> _pollOrderStatus(int orderId) async {
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final res = await FoodService.getOrderStatus(orderId);
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if (res.success && res.data != null) {
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activeOrder = res.data;
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update();
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if (activeOrder!.status == 'delivered' || foodOrderIsCancelled(activeOrder!.status)) {
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_statusPollTimer?.cancel();
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}
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}
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}
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void stopTracking() {
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_statusPollTimer?.cancel();
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activeOrder = null;
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}
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Future<bool> rateActiveOrder(int rating, {String? comment}) async {
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if (activeOrder == null) return false;
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final res = await FoodService.rateOrder(activeOrder!.id, rating, comment: comment);
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if (res.success) {
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await _pollOrderStatus(activeOrder!.id);
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return true;
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}
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mySnackbarWarning(res.message);
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return false;
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}
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Future<bool> cancelActiveOrder({String? reason}) async {
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if (activeOrder == null) return false;
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final res = await FoodService.cancelOrder(activeOrder!.id, reason: reason);
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if (res.success) {
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await _pollOrderStatus(activeOrder!.id);
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return true;
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}
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mySnackbarWarning(res.message);
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return false;
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}
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static String _generateUuidV4() {
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final rnd = Random.secure();
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final bytes = List<int>.generate(16, (_) => rnd.nextInt(256));
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bytes[6] = (bytes[6] & 0x0f) | 0x40; // version 4
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bytes[8] = (bytes[8] & 0x3f) | 0x80; // variant
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String hex(int start, int end) =>
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bytes.sublist(start, end).map((b) => b.toRadixString(16).padLeft(2, '0')).join();
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return '${hex(0, 4)}-${hex(4, 6)}-${hex(6, 8)}-${hex(8, 10)}-${hex(10, 16)}';
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}
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@override
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void onClose() {
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_statusPollTimer?.cancel();
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super.onClose();
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}
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}
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