feat(checkout): implement authentication guard for checkout route and add bank account service

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

@@ -0,0 +1,23 @@
+import { inject, Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { firstValueFrom } from 'rxjs';
+
+import { environment } from '../../../environments/environment';
+import { BankAccount } from './tenant.interface';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class CheckoutService {
+  private readonly http = inject(HttpClient);
+
+  async getSelectedBankAccount(tenantCode: string): Promise<BankAccount> {
+    const response = await firstValueFrom(
+      this.http.get<{ data: BankAccount }>(`${environment.url}tenants/${tenantCode}/bank-accounts/selected`)
+    );
+    if (!response?.data) {
+      throw new Error('No se encontraron los datos de la cuenta bancaria seleccionada.');
+    }
+    return response.data;
+  }
+}

src/app/core/services/tenant.interface.ts

@@ -1,5 +1,14 @@
 import { ApiResponse } from './api-response.interface';
 
+export interface BankAccount {
+  id: number;
+  tenant_code: string;
+  titular: string;
+  entidad: string;
+  alias: string;
+  cvu: string;
+}
+
 export interface Tenant {
   id: number;
   codigo: string;
@@ -13,6 +22,8 @@ export interface Tenant {
   footer_bg_color: string;
   header_logo: string;
   footer_logo: string;
+  selected_bank_account_id?: number | null;
+  selected_bank_account?: BankAccount | null;
 }
 
 export type TenantBootstrapResponse = ApiResponse<Tenant>;