feat: enhance cart functionality with quantity update and removal features, integrating toast notifications for user feedback

src/app/core/layout/store-layout/store-layout.component.spec.ts

@@ -7,6 +7,7 @@ import { of } from 'rxjs';
 import { Tenant } from '../../services/tenant.interface';
 import { TenantService } from '../../services/tenant.service';
 import { CartService } from '../../services/cart/cart.service';
+import { ToastService } from '../../services/toast.service';
 import { StoreLayoutComponent } from './store-layout.component';
 
 const tenant: Tenant = {
@@ -45,7 +46,19 @@ describe('StoreLayoutComponent', () => {
           provide: CartService,
           useValue: {
             cart: signal(null).asReadonly(),
-            loadCart: () => of({ id: 1, items: [], subtotal: '0' })
+            loadCart: () => of({ id: 1, items: [], subtotal: '0' }),
+            updateItemQuantity: vi.fn().mockReturnValue(of({ data: { id: 1, items: [], subtotal: '0' } })),
+            removeItem: vi.fn().mockReturnValue(of({ data: { id: 1, items: [], subtotal: '0' } }))
+          }
+        },
+        {
+          provide: ToastService,
+          useValue: {
+            show: vi.fn(),
+            info: vi.fn(),
+            danger: vi.fn(),
+            success: vi.fn(),
+            dismiss: vi.fn()
           }
         }
       ]

src/app/core/services/cart/cart.service.spec.ts

@@ -91,8 +91,8 @@ describe('CartService', () => {
     const updatedCart = { ...mockCart, subtotal: '30.00' };
     updatedCart.items[0].cantidad = 3;
 
-    service.updateItemQuantity(10, 3).subscribe((cart) => {
+    service.updateItemQuantity(10, 3).subscribe((res) => {
-      expect(cart).toEqual(updatedCart);
+      expect(res.data).toEqual(updatedCart);
       expect(service.cart()).toEqual(updatedCart);
     });
 
@@ -112,8 +112,8 @@ describe('CartService', () => {
       subtotal: '0.00'
     };
 
-    service.removeItem(10).subscribe((cart) => {
+    service.removeItem(10).subscribe((res) => {
-      expect(cart).toEqual(emptyCart);
+      expect(res.data).toEqual(emptyCart);
       expect(service.cart()).toEqual(emptyCart);
     });
 

src/app/core/services/cart/cart.service.ts

@@ -44,7 +44,7 @@ export class CartService {
       );
   }
 
-  updateItemQuantity(productVariantId: number, cantidad: number): Observable<Cart> {
+  updateItemQuantity(productVariantId: number, cantidad: number): Observable<ApiResponse<Cart>> {
     return this.http
       .patch<ApiResponse<Cart>>(
         `${this.tenantApiUrl}/cart/items/${productVariantId}`,
@@ -52,20 +52,18 @@ export class CartService {
         { withCredentials: true }
       )
       .pipe(
-        map((response) => response.data),
+        tap((response) => this.cartState.set(response.data))
-        tap((cart) => this.cartState.set(cart))
       );
   }
 
-  removeItem(productVariantId: number): Observable<Cart> {
+  removeItem(productVariantId: number): Observable<ApiResponse<Cart>> {
     return this.http
       .delete<ApiResponse<Cart>>(
         `${this.tenantApiUrl}/cart/items/${productVariantId}`,
         { withCredentials: true }
       )
       .pipe(
-        map((response) => response.data),
+        tap((response) => this.cartState.set(response.data))
-        tap((cart) => this.cartState.set(cart))
       );
   }
 }

src/app/shared/components/cart/cart.component.html

@@ -10,7 +10,7 @@
   </header>
 
   <div class="d-grid gap-2 flex-grow-1 overflow-y-auto cart-items-container">
-    @for (item of items(); track item.product + item.discountedPrice) {
+    @for (item of items(); track item.product + item.discountedPrice + resetKey(); let idx = $index) {
       <app-cart-item
         [imageUrl]="item.imageUrl"
         [product]="item.product"
@@ -19,6 +19,8 @@
         [discountPercentage]="item.discountPercentage"
         [attributes]="item.attributes"
         [quantity]="item.quantity"
+        (quantityChange)="onItemQuantityChange(idx, $event)"
+        (remove)="onItemRemove(idx)"
       />
     }
   </div>

src/app/shared/components/cart/cart.component.ts

@@ -1,5 +1,11 @@
-import { ChangeDetectionStrategy, Component, computed, input, output } from '@angular/core';
+import { ChangeDetectionStrategy, Component, computed, inject, input, output, signal } from '@angular/core';
+import { HttpErrorResponse } from '@angular/common/http';
+import { Subject, EMPTY } from 'rxjs';
+import { catchError, debounceTime, groupBy, mergeMap, switchMap, tap } from 'rxjs';
+import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
 import { CartItemAttribute, CartItemComponent } from '../cart-item/cart-item.component';
+import { CartService } from '../../../core/services/cart/cart.service';
+import { ToastService } from '../../../core/services/toast.service';
 
 export interface CartItemMock {
   imageUrl: string | null;
@@ -20,6 +26,10 @@ export interface CartItemMock {
   changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class CartComponent {
+  private readonly cartService = inject(CartService);
+  private readonly toastService = inject(ToastService);
+  private readonly quantityUpdates$ = new Subject<{ productVariantId: number; quantity: number }>();
+
   readonly title = input<string>('CARRITO');
   readonly showClose = input<boolean>(false);
   readonly items = input<CartItemMock[]>([]);
@@ -30,6 +40,60 @@ export class CartComponent {
 
   readonly closed = output<void>();
 
+  protected readonly resetKey = signal(0);
+
+  constructor() {
+    this.quantityUpdates$.pipe(
+      groupBy(update => update.productVariantId),
+      mergeMap(group$ => group$.pipe(
+        debounceTime(1000),
+        switchMap(update => this.cartService.updateItemQuantity(update.productVariantId, update.quantity).pipe(
+          tap({
+            next: (res) => {
+              const msg = res.message || 'Cantidad de producto actualizada.';
+              this.toastService.success(msg);
+            },
+            error: (err: HttpErrorResponse) => {
+              console.error('Error updating cart quantity', err);
+              const msg = err.error?.message || 'Error al actualizar la cantidad del producto.';
+              this.toastService.danger(msg);
+              this.resetKey.update(k => k + 1);
+            }
+          }),
+          catchError(() => EMPTY)
+        ))
+      )),
+      takeUntilDestroyed()
+    ).subscribe();
+  }
+
+  protected onItemQuantityChange(index: number, newQuantity: number): void {
+    const item = this.cartService.cart()?.items[index];
+    if (item) {
+      this.quantityUpdates$.next({
+        productVariantId: item.product_variant_id,
+        quantity: newQuantity
+      });
+    }
+  }
+
+  protected onItemRemove(index: number): void {
+    const item = this.cartService.cart()?.items[index];
+    if (item) {
+      this.cartService.removeItem(item.product_variant_id).subscribe({
+        next: (res) => {
+          const msg = res.message || 'Producto eliminado del carrito.';
+          this.toastService.success(msg);
+        },
+        error: (err: HttpErrorResponse) => {
+          console.error('Error removing item from cart', err);
+          const msg = err.error?.message || 'Error al eliminar el producto del carrito.';
+          this.toastService.danger(msg);
+        }
+      });
+    }
+  }
+
   protected readonly formattedSubtotal = computed(() => this.formatCurrency(this.subtotal()));
   protected readonly formattedDiscount = computed(() => this.formatCurrency(this.discount()));
   protected readonly formattedTotal = computed(() => this.formatCurrency(this.total()));
@@ -41,3 +105,4 @@ export class CartComponent {
     return `$ ${parts.join(',')}`;
   }
 }
+