first commit

client/src/pages/LoginPage.tsx

@@ -0,0 +1,69 @@
+import { useState, FormEvent } from 'react';
+import { Link, Navigate } from 'react-router-dom';
+import { useAuth } from '@/hooks/useAuth';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+
+export default function LoginPage() {
+  const { user, login } = useAuth();
+  const [username, setUsername] = useState('');
+  const [password, setPassword] = useState('');
+  const [error, setError] = useState('');
+  const [loading, setLoading] = useState(false);
+
+  if (user) return <Navigate to="/feed" replace />;
+
+  const handleSubmit = async (e: FormEvent) => {
+    e.preventDefault();
+    setError('');
+    setLoading(true);
+    try {
+      await login(username, password);
+    } catch (err: any) {
+      setError(err.response?.data?.error || 'Login failed');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <div className="flex min-h-screen items-center justify-center p-4">
+      <div className="w-full max-w-sm animate-fade-in">
+        <div className="text-center mb-8">
+          <h1 className="text-2xl font-semibold tracking-tight">Catstagram</h1>
+          <p className="text-sm text-muted-foreground mt-1">Sign in to your account</p>
+        </div>
+
+        <form onSubmit={handleSubmit} className="space-y-3">
+          <Input
+            value={username}
+            onChange={(e) => setUsername(e.target.value)}
+            placeholder="Username"
+            required
+            autoFocus
+            className="h-10 text-sm"
+          />
+          <Input
+            type="password"
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+            placeholder="Password"
+            required
+            className="h-10 text-sm"
+          />
+          {error && <p className="text-sm text-destructive">{error}</p>}
+          <Button type="submit" className="w-full h-10" disabled={loading}>
+            {loading ? 'Signing in...' : 'Sign in'}
+          </Button>
+        </form>
+
+        <p className="mt-6 text-center text-sm text-muted-foreground">
+          No account?{' '}
+          <Link to="/register" className="font-medium underline-offset-4 hover:underline">
+            Register
+          </Link>
+        </p>
+      </div>
+    </div>
+  );
+}