48 lines
No EOL
1.5 KiB
Dart
48 lines
No EOL
1.5 KiB
Dart
import 'dart:convert';
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import 'package:shared_preferences/shared_preferences.dart';
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Future<void> addToCart(productId) async {
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final prefs = await SharedPreferences.getInstance();
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var cart = jsonDecode(prefs.getString('cart') ?? '[]');
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var filteredCart = cart.where((x) => x["product_id"] == productId).toList();
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if (filteredCart.length == 0) {
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cart.add({
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"product_id": productId,
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"quantity": 1
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});
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} else {
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filteredCart[0]["quantity"]++;
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cart = cart.where((x) => x["product_id"] != productId).toList();
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cart.add(filteredCart[0]);
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}
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await prefs.setString('cart', jsonEncode(cart).toString());
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}
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Future<void> removeFromCart(productId, bool batch) async {
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final prefs = await SharedPreferences.getInstance();
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var cart = jsonDecode(prefs.getString('cart') ?? '[]');
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var filteredCart = cart.where((x) => x["product_id"] == productId).toList();
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if (filteredCart.length > 0) {
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if (batch) {
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cart = cart.where((x) => x["product_id"] != productId).toList();
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} else {
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filteredCart[0]["quantity"]--;
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if (filteredCart[0]["quantity"] == 0) {
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cart = cart.where((x) => x["product_id"] != productId).toList();
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} else {
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cart = cart.where((x) => x["product_id"] != productId).toList();
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cart.add(filteredCart[0]);
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}
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}
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}
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await prefs.setString('cart', jsonEncode(cart).toString());
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}
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Future<dynamic> viewCart() async {
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final prefs = await SharedPreferences.getInstance();
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var cart = jsonDecode(prefs.getString('cart') ?? '[]');
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return cart;
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} |