43 lines
1.4 KiB
Dart
43 lines
1.4 KiB
Dart
import 'dart:convert';
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import 'package:shared_preferences/shared_preferences.dart';
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Future<void> addItemToCart(String id) async {
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final prefs = await SharedPreferences.getInstance();
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String cartString = prefs.getString('cart') ?? "[]";
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List<Map<String, dynamic>> cart =
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List<Map<String, dynamic>>.from(jsonDecode(cartString) as List<dynamic>);
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final index = cart.indexWhere((element) => element['id'] == id);
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if (index == -1) {
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cart.add({'id': id, 'count': 1});
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} else {
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cart[index]['count'] = cart[index]['count']! + 1;
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}
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prefs.setString('cart', jsonEncode(cart));
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}
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Future<List<Map<String, dynamic>>> getCart() async {
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final prefs = await SharedPreferences.getInstance();
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String cartString = prefs.getString('cart') ?? "[]";
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List<Map<String, dynamic>> cart =
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List<Map<String, dynamic>>.from(jsonDecode(cartString) as List<dynamic>);
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return cart;
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}
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Future<void> removeItemFromCart(String id) async {
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final prefs = await SharedPreferences.getInstance();
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String cartString = prefs.getString('cart') ?? "[]";
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List<Map<String, dynamic>> cart =
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List<Map<String, dynamic>>.from(jsonDecode(cartString) as List<dynamic>);
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cart.removeWhere((element) => element['id'] == id && element['count'] == 1);
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for (final item in cart) {
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if (item['id'] == id) {
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item['count'] = item['count']! - 1;
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if (item['count'] == 0) {
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cart.remove(item);
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}
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}
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}
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prefs.setString('cart', jsonEncode(cart));
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}
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