Refactor authentication logic in Auth service; implement async login with error handling and add token management

.env

@@ -0,0 +1,2 @@
+# API Configuration
+VITE_API_BASE_URL=http://localhost:5269

src/pages/DashboardPage.js

@@ -5,7 +5,7 @@ export function renderDashboard() {
   const container = document.createElement('div');
   container.className = 'dashboard';
 
-  container.innerHTML = `
+  container.innerHTML = /*html*/`
     <div class="dashboard-header">
       <h1>Bienvenido, ${user?.email || 'Usuario'}</h1>
       <button id="logout-button" class="logout-button">Cerrar Sesión</button>

src/services/auth.js

@@ -4,27 +4,49 @@ export class Auth {
     this.isAuthenticated = false;
   }
 
-  login(email, password) {
-    if (email && password) {
-      this.currentUser = { email };
+  async login(email, password) {
+    if (!email || !password) return false;
+
+    try {
+      const response = await fetch(`${import.meta.env.VITE_API_BASE_URL}/api/Auth/login`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ email, password })
+      });
+
+      if (!response.ok) return false;
+
+      const { token, user } = await response.json();
+      if (!token) return false;
+
+      this.currentUser = user || { email };
       this.isAuthenticated = true;
       localStorage.setItem('user', JSON.stringify(this.currentUser));
+      localStorage.setItem('token', token);
       return true;
-    }
+    } catch (error) {
+      console.error('Login failed', error);
       return false;
     }
+  }
 
   logout() {
     this.currentUser = null;
     this.isAuthenticated = false;
     localStorage.removeItem('user');
+    localStorage.removeItem('token');
   }
 
   checkAuth() {
     const user = localStorage.getItem('user');
-    if (user) {
+    const token = localStorage.getItem('token');
+
+    if (user && token) {
       this.currentUser = JSON.parse(user);
       this.isAuthenticated = true;
+    } else {
+      this.isAuthenticated = false;
+      this.currentUser = null;
     }
     return this.isAuthenticated;
   }
@@ -32,6 +54,10 @@ export class Auth {
   getUser() {
     return this.currentUser;
   }
+
+  getToken() {
+    return localStorage.getItem('token');
+  }
 }
 
 export const auth = new Auth();