feat: add secure login page with jwt authentication and button animation

src/App.tsx

@@ -1,16 +1,27 @@
-import { Routes, Route, Navigate } from 'react-router-dom';
+import { Routes, Route, Navigate, useLocation } from 'react-router-dom';
 import Layout from './components/Layout';
 import Dashboard from './pages/Dashboard';
 import Products from './pages/Products';
 import ProductDetails from './pages/ProductDetails';
 import Clients from './pages/Clients';
 import ClientDetails from './pages/ClientDetails';
+import Login from './pages/Login';
+import { isAuthenticated } from './dataService';
+
+function PrivateRoute({ children }: { children: JSX.Element }) {
+  const location = useLocation();
+  if (!isAuthenticated()) {
+    return <Navigate to="/login" state={{ from: location }} replace />;
+  }
+  return children;
+}
 
 function App() {
   return (
     <Routes>
+      <Route path="/login" element={<Login />} />
       <Route path="/" element={<Navigate to="/graph" replace />} />
-      <Route path="/" element={<Layout />}>
+      <Route path="/" element={<PrivateRoute><Layout /></PrivateRoute>}>
         <Route path="graph" element={<Dashboard />} />
         <Route path="products" element={<Products />} />
         <Route path="products/:id" element={<ProductDetails />} />

src/components/Layout.tsx

@@ -1,8 +1,8 @@
 import { useState, useEffect } from 'react';
 import { Outlet, Link, useLocation } from 'react-router-dom';
-import { LayoutDashboard, Users, BarChart3, ChevronLeft, ChevronRight, Package, Loader2 } from 'lucide-react';
+import { LayoutDashboard, Users, BarChart3, ChevronLeft, ChevronRight, Package, Loader2, LogOut } from 'lucide-react';
 import type { DateRange, OrderData } from '../types';
-import { fetchData } from '../dataService';
+import { fetchData, logout } from '../dataService';
 
 const Layout = () => {
   const location = useLocation();
@@ -102,6 +102,16 @@ const Layout = () => {
             );
           })}
         </nav>
+
+        <div className="p-4 border-t border-dark-border">
+          <button
+            onClick={logout}
+            className={`w-full flex items-center text-red-500 hover:bg-red-500/10 px-4 py-3 rounded-xl transition-all ${isSidebarCollapsed ? 'justify-center' : 'space-x-3'}`}
+          >
+            <LogOut className="w-5 h-5 shrink-0" />
+            {!isSidebarCollapsed && <span className="font-medium">Sair</span>}
+          </button>
+        </div>
       </aside>
 
       {/* Main Content */}

src/dataService.ts

@@ -2,9 +2,49 @@ import type { OrderData } from './types';
 
 const API_URL = import.meta.env.VITE_API_URL || '/api';
 
+export const login = async (email: string, password: string): Promise<boolean> => {
+  try {
+    const response = await fetch(`${API_URL}/login`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({ email, password }),
+    });
+
+    if (response.ok) {
+      const data = await response.json();
+      localStorage.setItem('auth_token', data.token);
+      return true;
+    }
+    return false;
+  } catch (error) {
+    console.error('Login failed', error);
+    return false;
+  }
+};
+
+export const logout = () => {
+  localStorage.removeItem('auth_token');
+  window.location.href = '/#/login';
+};
+
+export const isAuthenticated = (): boolean => {
+  return !!localStorage.getItem('auth_token');
+};
+
 export const fetchData = async (): Promise<OrderData[]> => {
     try {
-        const response = await fetch(`${API_URL}/data`);
+        const token = localStorage.getItem('auth_token');
+        const response = await fetch(`${API_URL}/data`, {
+            headers: {
+                'Authorization': `Bearer ${token}`
+            }
+        });
+        if (response.status === 401 || response.status === 403) {
+            logout();
+            return [];
+        }
         if (!response.ok) return [];
         return await response.json();
     } catch (error) {

src/pages/Login.tsx

@@ -0,0 +1,82 @@
+import { useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { Lock } from 'lucide-react';
+import { login } from '../dataService';
+
+const Login = () => {
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [error, setError] = useState('');
+  const [isLoading, setIsLoading] = useState(false);
+  const navigate = useNavigate();
+
+  const handleLogin = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setIsLoading(true);
+    setError('');
+
+    try {
+      const success = await login(email, password);
+      if (success) {
+        navigate('/graph');
+      } else {
+        setError('E-mail ou senha incorretos.');
+      }
+    } catch (err) {
+      setError('Erro ao conectar ao servidor.');
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  return (
+    <div className="min-h-screen bg-dark-bg flex items-center justify-center p-4">
+      <div className="w-full max-w-md bg-dark-card border border-dark-border rounded-3xl p-8 shadow-xl">
+        <div className="flex flex-col items-center mb-8">
+          <div className="w-16 h-16 bg-brand-primary/10 rounded-2xl flex items-center justify-center text-brand-primary mb-4">
+            <Lock size={32} />
+          </div>
+          <h1 className="text-2xl font-bold text-dark-text">Acesso Restrito</h1>
+          <p className="text-dark-muted mt-2 text-sm text-center">Insira suas credenciais para acessar o painel administrativo.</p>
+        </div>
+
+        <form onSubmit={handleLogin} className="space-y-4">
+          <div>
+            <label className="block text-xs font-bold text-dark-muted uppercase tracking-widest mb-2">E-mail</label>
+            <input
+              type="email"
+              value={email}
+              onChange={(e) => setEmail(e.target.value)}
+              className="w-full bg-dark-input border border-dark-border text-dark-text rounded-xl px-4 py-3 focus:outline-none focus:border-brand-primary focus:ring-1 focus:ring-brand-primary transition-all"
+              placeholder="admin@admin.com"
+              required
+            />
+          </div>
+          <div>
+            <label className="block text-xs font-bold text-dark-muted uppercase tracking-widest mb-2">Senha</label>
+            <input
+              type="password"
+              value={password}
+              onChange={(e) => setPassword(e.target.value)}
+              className="w-full bg-dark-input border border-dark-border text-dark-text rounded-xl px-4 py-3 focus:outline-none focus:border-brand-primary focus:ring-1 focus:ring-brand-primary transition-all"
+              placeholder="••••••••"
+              required
+            />
+          </div>
+
+          {error && <p className="text-red-500 text-sm font-medium">{error}</p>}
+
+          <button
+            type="submit"
+            disabled={isLoading}
+            className="w-full bg-brand-primary hover:bg-opacity-90 hover:scale-[1.02] active:scale-[0.98] text-zinc-900 font-bold py-3 rounded-xl transition-all duration-200 disabled:opacity-50 disabled:hover:scale-100 disabled:active:scale-100 mt-4 cursor-pointer"
+          >
+            {isLoading ? 'Entrando...' : 'Entrar'}
+          </button>
+        </form>
+      </div>
+    </div>
+  );
+};
+
+export default Login;