feat(cart): open header cart from query param

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

@@ -2,9 +2,15 @@ import { describe, it, expect, beforeEach, vi } from 'vitest';
 import { signal } from '@angular/core';
 import { TestBed } from '@angular/core/testing';
 import { By } from '@angular/platform-browser';
-import { provideRouter, Router } from '@angular/router';
+import {
+  ActivatedRoute,
+  convertToParamMap,
+  ParamMap,
+  provideRouter,
+  Router,
+} from '@angular/router';
 
-import { of } from 'rxjs';
+import { BehaviorSubject, of } from 'rxjs';
 
 import { Tenant } from '../../services/tenant.interface';
 import { TenantService } from '../../services/tenant.service';
@@ -140,11 +146,13 @@ describe('StoreLayoutComponent', () => {
   let cartState = signal<Cart | null>(null);
   let authUserState = signal<AuthUser | null>(null);
   let checkoutServiceStub: { startCheckout: ReturnType<typeof vi.fn> };
+  let queryParamMapState: BehaviorSubject<ParamMap>;
 
   beforeEach(async () => {
     tenantState = signal<Tenant | null>(tenant);
     cartState = signal<Cart | null>(null);
     authUserState = signal<AuthUser | null>(null);
+    queryParamMapState = new BehaviorSubject(convertToParamMap({}));
     const isAuthenticatedState = signal(false);
     checkoutServiceStub = {
       startCheckout: vi.fn().mockResolvedValue({ id: 55 }),
@@ -154,6 +162,10 @@ describe('StoreLayoutComponent', () => {
       imports: [StoreLayoutComponent],
       providers: [
         provideRouter([]),
+        {
+          provide: ActivatedRoute,
+          useValue: { queryParamMap: queryParamMapState.asObservable() },
+        },
         {
           provide: TenantService,
           useValue: {
@@ -213,6 +225,19 @@ describe('StoreLayoutComponent', () => {
     expect(compiled.querySelector('app-store-footer .store-layout__footer')).not.toBeNull();
   });
 
+  it('opens the cart when requested through the openCart query parameter', () => {
+    const fixture = TestBed.createComponent(StoreLayoutComponent);
+    fixture.detectChanges();
+
+    expect((fixture.componentInstance as any).isCartOpen()).toBe(false);
+
+    queryParamMapState.next(convertToParamMap({ openCart: 'true' }));
+    fixture.detectChanges();
+
+    expect((fixture.componentInstance as any).isCartOpen()).toBe(true);
+    expect((fixture.nativeElement as HTMLElement).querySelector('app-cart')).not.toBeNull();
+  });
+
   it('hides the configured header elements when the tenant disables them', () => {
     tenantState.set({
       ...tenant,

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

@@ -1,5 +1,6 @@
-import { Component, computed, inject, OnInit, signal } from '@angular/core';
+import { Component, computed, DestroyRef, inject, OnInit, signal } from '@angular/core';
-import { Router, RouterOutlet } from '@angular/router';
+import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
+import { ActivatedRoute, Router, RouterOutlet } from '@angular/router';
 import { TenantService } from '../../services/tenant.service';
 import { CartService } from '../../services/cart/cart.service';
 import { StoreFooterComponent, StoreFooterSection } from './store-footer/store-footer.component';
@@ -32,6 +33,8 @@ export class StoreLayoutComponent implements OnInit {
   private readonly checkoutService = inject(CheckoutService);
   private readonly toastService = inject(ToastService);
   private readonly router = inject(Router);
+  private readonly route = inject(ActivatedRoute);
+  private readonly destroyRef = inject(DestroyRef);
 
   protected readonly isCartOpen = signal(false);
   protected readonly isCreatingPurchase = signal(false);
@@ -146,6 +149,12 @@ export class StoreLayoutComponent implements OnInit {
   });
 
   ngOnInit(): void {
+    this.route.queryParamMap.pipe(takeUntilDestroyed(this.destroyRef)).subscribe((params) => {
+      if (params.get('openCart') === 'true') {
+        this.isCartOpen.set(true);
+      }
+    });
+
     this.cartService.loadCart().subscribe({
       error: (err) => console.error('Error loading cart', err),
     });