feat(commerce-backend): habilitar login con Google via Medusa auth module

Agrega el modulo @medusajs/medusa/auth con providers emailpass (explicito,
para no perder el default al customizar el modulo) y google, leyendo
GOOGLE_CLIENT_ID/GOOGLE_CLIENT_SECRET/GOOGLE_CALLBACK_URL desde
commerce-secrets con required().

workloads/commerce-backend/medusa-config.ts

@@ -157,6 +157,30 @@ module.exports = defineConfig({
         ],
       },
     },
+    {
+      resolve: "@medusajs/medusa/auth",
+      options: {
+        providers: [
+          // emailpass se declara explicito junto con google -- una vez
+          // que el modulo auth se customiza, la doc no deja claro si el
+          // provider default (emailpass) se sigue registrando solo.
+          {
+            resolve: "@medusajs/medusa/auth-emailpass",
+            id: "emailpass",
+            options: {},
+          },
+          {
+            resolve: "@medusajs/medusa/auth-google",
+            id: "google",
+            options: {
+              clientId: required("GOOGLE_CLIENT_ID"),
+              clientSecret: required("GOOGLE_CLIENT_SECRET"),
+              callbackUrl: required("GOOGLE_CALLBACK_URL"),
+            },
+          },
+        ],
+      },
+    },
   ],
 
   // ADR 0006 Etapa 2. Sin required(): a diferencia de S3/DB, Meilisearch

workloads/ecommerce/app/api/customer/login/route.ts

@@ -0,0 +1,14 @@
+import { loginCustomer } from "@/lib/headless/providers/medusa-customer";
+
+export async function POST(request: Request) {
+  const { email, password } = await request.json();
+  if (!email || !password) {
+    return Response.json({ error: "Correo y contraseña son obligatorios" }, { status: 400 });
+  }
+  try {
+    const customer = await loginCustomer(email, password);
+    return Response.json(customer);
+  } catch (error) {
+    return Response.json({ error: (error as Error).message }, { status: 400 });
+  }
+}

workloads/ecommerce/app/api/customer/me/route.ts

@@ -0,0 +1,14 @@
+import { getCurrentCustomer } from "@/lib/headless/providers/medusa-customer";
+
+export async function GET(request: Request) {
+  const token = new URL(request.url).searchParams.get("token");
+  if (!token) {
+    return Response.json({ error: "token es obligatorio" }, { status: 400 });
+  }
+  try {
+    const customer = await getCurrentCustomer(token);
+    return Response.json(customer);
+  } catch (error) {
+    return Response.json({ error: (error as Error).message }, { status: 401 });
+  }
+}

workloads/ecommerce/app/api/customer/register/route.ts

@@ -0,0 +1,14 @@
+import { registerCustomer } from "@/lib/headless/providers/medusa-customer";
+
+export async function POST(request: Request) {
+  const { email, password, firstName, lastName } = await request.json();
+  if (!email || !password || !firstName || !lastName) {
+    return Response.json({ error: "Faltan campos obligatorios" }, { status: 400 });
+  }
+  try {
+    const customer = await registerCustomer(email, password, firstName, lastName);
+    return Response.json(customer);
+  } catch (error) {
+    return Response.json({ error: (error as Error).message }, { status: 400 });
+  }
+}

workloads/ecommerce/components/account/account-dialog.tsx

@@ -0,0 +1,80 @@
+"use client";
+
+import Link from "next/link";
+import { LogOut, MessageCircle, PackageCheck } from "lucide-react";
+import { type FormEvent, useState } from "react";
+import { Button } from "@/components/ui/button";
+import { Dialog, DialogContent } from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
+import { useCustomerStore } from "@/store/customer-store";
+
+type Mode = "login" | "register";
+
+export function AccountDialog({ open, onOpenChange }: { open: boolean; onOpenChange: (open: boolean) => void }) {
+  const { customer, hasHydrated, loading, error, login, register, logout } = useCustomerStore();
+  const [mode, setMode] = useState<Mode>("login");
+  const [form, setForm] = useState({ email: "", password: "", firstName: "", lastName: "" });
+
+  async function submit(event: FormEvent) {
+    event.preventDefault();
+    const ok = mode === "login"
+      ? await login(form.email, form.password)
+      : await register(form.email, form.password, form.firstName, form.lastName);
+    if (ok) setForm({ email: "", password: "", firstName: "", lastName: "" });
+  }
+
+  const isLoggedIn = hasHydrated && customer !== null;
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-lg p-7">
+        <div className="pr-10">
+          {isLoggedIn ? (
+            <>
+              <span className="text-xs font-black uppercase tracking-[.16em] text-ari-coral">Tu cuenta</span>
+              <h2 className="mt-3 text-3xl font-black">Hola, {customer.firstName ?? customer.email}</h2>
+              <p className="mt-3 text-sm leading-6 text-slate-600">{customer.email}</p>
+              <div className="mt-6 grid gap-3">
+                <Button asChild variant="outline"><Link href="/catalog" onClick={() => onOpenChange(false)}><PackageCheck />Ver mis opciones de compra</Link></Button>
+                <Button variant="ghost" onClick={logout}><LogOut className="size-4" />Cerrar sesión</Button>
+              </div>
+            </>
+          ) : (
+            <>
+              <span className="text-xs font-black uppercase tracking-[.16em] text-ari-coral">Atención personalizada</span>
+              <h2 className="mt-3 text-3xl font-black">{mode === "login" ? "Inicia sesión" : "Crea tu cuenta"}</h2>
+              <form onSubmit={submit} className="mt-5 space-y-3">
+                {mode === "register" && (
+                  <div className="grid gap-3 sm:grid-cols-2">
+                    <Input placeholder="Nombre" required value={form.firstName} onChange={(event) => setForm({ ...form, firstName: event.target.value })} />
+                    <Input placeholder="Apellido" required value={form.lastName} onChange={(event) => setForm({ ...form, lastName: event.target.value })} />
+                  </div>
+                )}
+                <Input type="email" placeholder="Correo" required value={form.email} onChange={(event) => setForm({ ...form, email: event.target.value })} />
+                <Input type="password" placeholder="Contraseña" required minLength={8} value={form.password} onChange={(event) => setForm({ ...form, password: event.target.value })} />
+                {error && <p className="text-sm font-bold text-rose-600">{error}</p>}
+                <Button type="submit" variant="primary" size="lg" className="w-full" disabled={loading}>
+                  {loading ? "Un momento…" : mode === "login" ? "Iniciar sesión" : "Crear cuenta"}
+                </Button>
+              </form>
+              <button
+                type="button"
+                className="mt-3 text-sm font-bold text-ari-marino hover:underline"
+                onClick={() => setMode(mode === "login" ? "register" : "login")}
+              >
+                {mode === "login" ? "¿No tienes cuenta? Regístrate" : "¿Ya tienes cuenta? Inicia sesión"}
+              </button>
+              <div className="mt-6 border-t border-slate-100 pt-5">
+                <Button asChild variant="outline" className="w-full">
+                  <a href={process.env.NEXT_PUBLIC_WHATSAPP_URL ?? "https://wa.link/rvcqqc"} target="_blank" rel="noopener noreferrer">
+                    <MessageCircle />Hablar con ARI
+                  </a>
+                </Button>
+              </div>
+            </>
+          )}
+        </div>
+      </DialogContent>
+    </Dialog>
+  );
+}

workloads/ecommerce/components/layout/navbar.tsx

@@ -2,14 +2,15 @@
 
 import Link from "next/link";
 import { usePathname, useSearchParams } from "next/navigation";
-import { ChevronDown, Heart, LayoutGrid, Menu, MessageCircle, PackageCheck, ShoppingCart, UserRound } from "lucide-react";
+import { ChevronDown, Heart, LayoutGrid, Menu, ShoppingCart, UserRound } from "lucide-react";
 import { Suspense, useEffect, useMemo, useRef, useState } from "react";
+import { AccountDialog } from "@/components/account/account-dialog";
 import { PredictiveSearch } from "@/components/search/predictive-search";
 import { Button } from "@/components/ui/button";
-import { Dialog, DialogContent } from "@/components/ui/dialog";
 import { Sheet, SheetContent, SheetDescription, SheetHeader, SheetTitle } from "@/components/ui/sheet";
 import type { Category, Product } from "@/lib/headless/types";
 import { useCartStore } from "@/store/cart-store";
+import { useCustomerStore } from "@/store/customer-store";
 import { useWishlistStore } from "@/store/wishlist-store";
 
 type CategoryNode = Category & { children: Category[] };
@@ -34,6 +35,9 @@ export function Navbar({ products, categories }: { products: Product[]; categori
   const openWishlist = useWishlistStore((state) => state.openWishlist);
   const count = cartHydrated ? items.reduce((sum, item) => sum + item.quantity, 0) : 0;
   const wishlistCount = wishlistHydrated ? wishlistProducts.length : 0;
+  const customer = useCustomerStore((state) => state.customer);
+  const customerHydrated = useCustomerStore((state) => state.hasHydrated);
+  const isLoggedIn = customerHydrated && customer !== null;
 
   const tree = useMemo(() => buildCategoryTree(categories), [categories]);
   // Derivado de los productos reales (no de un endpoint de colecciones):
@@ -62,7 +66,15 @@ export function Navbar({ products, categories }: { products: Product[]; categori
           </Link>
           <PredictiveSearch />
           <div className="flex items-center gap-2">
-            <Button variant="outline" size="icon" aria-label="Mi cuenta" className="hidden border-slate-300 bg-white text-slate-900 hover:border-ari-coral hover:bg-ari-coral/10 sm:inline-flex" onClick={() => setAccountOpen(true)}><UserRound /></Button>
+            {/* Antes escondido en mobile (solo alcanzable desde el menu
+                hamburguesa) -- pedido explicito del usuario: visible
+                siempre en el header, con un punto verde cuando hay sesion
+                iniciada (mismo patron que el badge de cantidad del
+                carrito/favoritos, pero de presencia, no de conteo). */}
+            <Button variant="outline" size="icon" aria-label={isLoggedIn ? "Mi cuenta (sesión iniciada)" : "Mi cuenta"} className="relative inline-flex border-slate-300 bg-white text-slate-900 hover:border-ari-coral hover:bg-ari-coral/10" onClick={() => setAccountOpen(true)}>
+              <UserRound />
+              {isLoggedIn && <span className="absolute -right-1 -top-1 size-3 rounded-full border-2 border-white bg-emerald-500" />}
+            </Button>
             <Button variant="outline" size="icon" aria-label={`Favoritos: ${wishlistCount}`} className="relative hidden border-slate-300 bg-white text-slate-900 hover:border-ari-coral hover:bg-ari-coral/10 sm:inline-flex" onClick={openWishlist}>
               <Heart />
               {wishlistCount > 0 && <span className="absolute -right-1.5 -top-1.5 grid size-5 place-items-center rounded-full bg-ari-marino text-[10px] font-black text-white">{wishlistCount}</span>}
@@ -108,19 +120,7 @@ export function Navbar({ products, categories }: { products: Product[]; categori
         </SheetContent>
       </Sheet>
 
-      <Dialog open={accountOpen} onOpenChange={setAccountOpen}>
+      <AccountDialog open={accountOpen} onOpenChange={setAccountOpen} />
-        <DialogContent className="max-w-lg p-7">
-          <div className="pr-10">
-            <span className="text-xs font-black uppercase tracking-[.16em] text-ari-coral">Atención personalizada</span>
-            <h2 className="mt-3 text-3xl font-black">Tu cuenta ARI</h2>
-            <p className="mt-3 text-sm leading-6 text-slate-600">El inicio de sesión quedará conectado al backend headless. Mientras tanto, puedes gestionar pedidos y disponibilidad directamente por WhatsApp.</p>
-            <div className="mt-6 grid gap-3">
-              <Button asChild variant="primary" size="lg"><a href={process.env.NEXT_PUBLIC_WHATSAPP_URL ?? "https://wa.link/rvcqqc"} target="_blank" rel="noopener noreferrer"><MessageCircle />Hablar con ARI</a></Button>
-              <Button asChild variant="outline"><Link href="/catalog" onClick={() => setAccountOpen(false)}><PackageCheck />Ver mis opciones de compra</Link></Button>
-            </div>
-          </div>
-        </DialogContent>
-      </Dialog>
     </header>
   );
 }

workloads/ecommerce/frontend/patches/deployment.yaml

@@ -25,7 +25,7 @@ spec:
         runAsUser: 1001
       containers:
         - name: app
-          image: gitea.cruzcloud.net/devops/ecommerce-frontend:v1.0.210
+          image: gitea.cruzcloud.net/devops/ecommerce-frontend:v1.0.212
           env:
             - name: HEADLESS_PROVIDER
               value: medusa

workloads/ecommerce/lib/headless/providers/medusa-customer.ts

@@ -0,0 +1,117 @@
+// Cuentas de cliente reales conectadas a Medusa (Store API), mismo patron
+// que medusa-cart.ts -- server-side, nunca cacheado (auth es estado
+// mutable por sesion, no catalogo).
+//
+// Flujo verificado en vivo (2026-08-29) antes de escribir este archivo,
+// no asumido contra documentacion: registro (auth/customer/emailpass/
+// register) da un token de registro; ese token crea el customer real
+// (POST /store/customers); pero ese token de registro NO sirve como
+// sesion del customer -- hay que loguear de nuevo para obtener el token
+// de sesion real. Mensajes de error exactos confirmados: registro con
+// correo repetido -> 401 "Identity with email already exists"; login con
+// credenciales invalidas -> 401 "Invalid email or password".
+
+export interface CustomerSummary {
+  token: string;
+  id: string;
+  email: string;
+  firstName: string | null;
+  lastName: string | null;
+}
+
+function backendUrl(): string {
+  const value = process.env.MEDUSA_BACKEND_URL;
+  if (!value) {
+    throw new Error("MEDUSA_BACKEND_URL no está configurado.");
+  }
+  return value.replace(/\/$/, "");
+}
+
+async function medusaAuthFetch(
+  path: string,
+  init?: { method?: string; body?: unknown; token?: string },
+): Promise<Record<string, unknown>> {
+  const publishableKey = process.env.MEDUSA_PUBLISHABLE_KEY;
+
+  const response = await fetch(`${backendUrl()}${path}`, {
+    method: init?.method ?? "GET",
+    headers: {
+      "Content-Type": "application/json",
+      ...(publishableKey ? { "x-publishable-api-key": publishableKey } : {}),
+      ...(init?.token ? { Authorization: `Bearer ${init.token}` } : {}),
+    },
+    body: init?.body ? JSON.stringify(init.body) : undefined,
+    cache: "no-store",
+  });
+
+  const data = await response.json().catch(() => ({}));
+  if (!response.ok) {
+    const message = typeof data.message === "string" ? data.message : `Error ${response.status}`;
+    throw new Error(message);
+  }
+  return data;
+}
+
+type MedusaCustomer = {
+  id: string;
+  email: string;
+  first_name?: string | null;
+  last_name?: string | null;
+};
+
+export async function getCurrentCustomer(token: string): Promise<CustomerSummary> {
+  const data = await medusaAuthFetch("/store/customers/me", { token });
+  const customer = data.customer as MedusaCustomer;
+  return {
+    token,
+    id: customer.id,
+    email: customer.email,
+    firstName: customer.first_name ?? null,
+    lastName: customer.last_name ?? null,
+  };
+}
+
+export async function loginCustomer(email: string, password: string): Promise<CustomerSummary> {
+  let data: Record<string, unknown>;
+  try {
+    data = await medusaAuthFetch("/auth/customer/emailpass", {
+      method: "POST",
+      body: { email, password },
+    });
+  } catch (error) {
+    if ((error as Error).message === "Invalid email or password") {
+      throw new Error("Correo o contraseña incorrectos.");
+    }
+    throw error;
+  }
+  return getCurrentCustomer(data.token as string);
+}
+
+export async function registerCustomer(
+  email: string,
+  password: string,
+  firstName: string,
+  lastName: string,
+): Promise<CustomerSummary> {
+  let data: Record<string, unknown>;
+  try {
+    data = await medusaAuthFetch("/auth/customer/emailpass/register", {
+      method: "POST",
+      body: { email, password },
+    });
+  } catch (error) {
+    if ((error as Error).message === "Identity with email already exists") {
+      throw new Error("Ese correo ya está registrado — inicia sesión en vez de crear una cuenta nueva.");
+    }
+    throw error;
+  }
+  await medusaAuthFetch("/store/customers", {
+    method: "POST",
+    token: data.token as string,
+    body: { email, first_name: firstName, last_name: lastName },
+  });
+  // El token de registro crea el customer pero no queda como sesion real
+  // -- se loguea de nuevo para obtener el token de sesion (confirmado en
+  // vivo, no documentado explicitamente).
+  return loginCustomer(email, password);
+}

workloads/ecommerce/store/customer-store.ts

@@ -0,0 +1,111 @@
+"use client";
+
+import { create } from "zustand";
+import { createJSONStorage, persist } from "zustand/middleware";
+
+// Cuenta de cliente real conectada a Medusa (Store API, via
+// /api/customer/*), mismo patron que cart-store.ts: token + datos basicos
+// persistidos en localStorage, resincronizados contra el servidor al
+// rehidratar (el token puede llevar dias, o haber sido revocado).
+export interface Customer {
+  id: string;
+  email: string;
+  firstName: string | null;
+  lastName: string | null;
+}
+
+interface CustomerState {
+  token: string | null;
+  customer: Customer | null;
+  hasHydrated: boolean;
+  loading: boolean;
+  error: string | null;
+  setHasHydrated: (value: boolean) => void;
+  register: (email: string, password: string, firstName: string, lastName: string) => Promise<boolean>;
+  login: (email: string, password: string) => Promise<boolean>;
+  logout: () => void;
+  syncCustomer: () => Promise<void>;
+}
+
+async function postJson(url: string, body: unknown) {
+  const response = await fetch(url, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(body),
+  });
+  return response.json();
+}
+
+function toCustomer(data: Record<string, unknown>): Customer {
+  return {
+    id: data.id as string,
+    email: data.email as string,
+    firstName: (data.firstName as string | null) ?? null,
+    lastName: (data.lastName as string | null) ?? null,
+  };
+}
+
+export const useCustomerStore = create<CustomerState>()(
+  persist(
+    (set, get) => ({
+      token: null,
+      customer: null,
+      hasHydrated: false,
+      loading: false,
+      error: null,
+      setHasHydrated: (value) => set({ hasHydrated: value }),
+
+      register: async (email, password, firstName, lastName) => {
+        set({ loading: true, error: null });
+        const result = await postJson("/api/customer/register", { email, password, firstName, lastName });
+        if (result.error) {
+          set({ loading: false, error: result.error });
+          return false;
+        }
+        set({ loading: false, token: result.token, customer: toCustomer(result) });
+        return true;
+      },
+
+      login: async (email, password) => {
+        set({ loading: true, error: null });
+        const result = await postJson("/api/customer/login", { email, password });
+        if (result.error) {
+          set({ loading: false, error: result.error });
+          return false;
+        }
+        set({ loading: false, token: result.token, customer: toCustomer(result) });
+        return true;
+      },
+
+      logout: () => set({ token: null, customer: null, error: null }),
+
+      // El token guardado en localStorage puede llevar dias o haber sido
+      // revocado -- se refresca contra el servidor en vez de confiar en el
+      // ultimo snapshot local.
+      syncCustomer: async () => {
+        const token = get().token;
+        if (!token) return;
+        try {
+          const response = await fetch(`/api/customer/me?token=${encodeURIComponent(token)}`);
+          if (!response.ok) {
+            set({ token: null, customer: null });
+            return;
+          }
+          const result = await response.json();
+          if (result.id) set({ customer: toCustomer(result) });
+        } catch {
+          // Sin red: se queda con el ultimo estado local conocido.
+        }
+      },
+    }),
+    {
+      name: "ari-shopping-customer-v1",
+      storage: createJSONStorage(() => localStorage),
+      partialize: (state) => ({ token: state.token, customer: state.customer }),
+      onRehydrateStorage: () => (state) => {
+        state?.setHasHydrated(true);
+        void state?.syncCustomer();
+      },
+    },
+  ),
+);