webupdatev1

website/public/assets/js/state-manager.js

@@ -61,7 +61,7 @@
 
     // Cart methods
     addToCart(product, quantity = 1) {
-      const existing = this.state.cart.find((item) => item.id === product.id);
+      const existing = this._findById(this.state.cart, product.id);
 
       if (existing) {
         existing.quantity += quantity;
@@ -73,27 +73,26 @@
         });
       }
 
-      this.saveToStorage();
-      this.emit("cartUpdated", this.state.cart);
+      this._updateState("cart");
       return this.state.cart;
     }
 
     removeFromCart(productId) {
-      this.state.cart = this.state.cart.filter((item) => item.id !== productId);
-      this.saveToStorage();
-      this.emit("cartUpdated", this.state.cart);
+      this.state.cart = this.state.cart.filter(
+        (item) => String(item.id) !== String(productId)
+      );
+      this._updateState("cart");
       return this.state.cart;
     }
 
     updateCartQuantity(productId, quantity) {
-      const item = this.state.cart.find((item) => item.id === productId);
+      const item = this._findById(this.state.cart, productId);
       if (item) {
         item.quantity = Math.max(0, quantity);
         if (item.quantity === 0) {
           return this.removeFromCart(productId);
         }
-        this.saveToStorage();
-        this.emit("cartUpdated", this.state.cart);
+        this._updateState("cart");
       }
       return this.state.cart;
     }
@@ -103,20 +102,16 @@
     }
 
     getCartTotal() {
-      return this.state.cart.reduce(
-        (sum, item) => sum + item.price * item.quantity,
-        0
-      );
+      return this._calculateTotal(this.state.cart);
     }
 
     getCartCount() {
-      return this.state.cart.reduce((sum, item) => sum + item.quantity, 0);
+      return this._calculateCount(this.state.cart);
     }
 
     clearCart() {
       this.state.cart = [];
-      this.saveToStorage();
-      this.emit("cartUpdated", this.state.cart);
+      this._updateState("cart");
     }
 
     // Wishlist methods
@@ -179,6 +174,31 @@
         });
       }
     }
+
+    // Helper methods
+    _findById(collection, id) {
+      return collection.find((item) => String(item.id) === String(id));
+    }
+
+    _updateState(type) {
+      this.saveToStorage();
+      this.emit(`${type}Updated`, this.state[type]);
+    }
+
+    _calculateTotal(items) {
+      return items.reduce((sum, item) => {
+        const price = parseFloat(item.price) || 0;
+        const quantity = parseInt(item.quantity) || 0;
+        return sum + price * quantity;
+      }, 0);
+    }
+
+    _calculateCount(items) {
+      return items.reduce((sum, item) => {
+        const quantity = parseInt(item.quantity) || 0;
+        return sum + quantity;
+      }, 0);
+    }
   }
 
   // Create global instance