From de612bc1c68fd282827cf211612cfe812688691d Mon Sep 17 00:00:00 2001
From: Moe <moe@chocola.dev>
Date: Tue, 26 Apr 2022 10:44:42 +0700
Subject: [PATCH] Add removeFromCart function

---
 lib/data/cart.dart | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/lib/data/cart.dart b/lib/data/cart.dart
index 5892d91..d07916f 100644
--- a/lib/data/cart.dart
+++ b/lib/data/cart.dart
@@ -17,4 +17,25 @@ Future<void> addToCart(productId) async {
     cart.add(filteredCart[0]);
   }
   await prefs.setString('cart', jsonEncode(cart).toString());
+}
+
+Future<void> removeFromCart(productId, bool batch) async {
+  final prefs = await SharedPreferences.getInstance();
+
+  var cart = jsonDecode(prefs.getString('cart') ?? '[]');
+  var filteredCart = cart.where((x) => x["product_id"] == productId).toList();
+  if (filteredCart.length > 0) {
+    if (batch) {
+      cart = cart.where((x) => x["product_id"] != productId).toList();
+    } else {
+      filteredCart[0]["quantity"]--;
+      if (filteredCart[0]["quantity"] == 0) {
+        cart = cart.where((x) => x["product_id"] != productId).toList();
+      } else {
+        cart = cart.where((x) => x["product_id"] != productId).toList();
+        cart.add(filteredCart[0]);
+      }
+    }
+  }
+  await prefs.setString('cart', jsonEncode(cart).toString());
 }
\ No newline at end of file