feat: Implement standalone admin at /admin with custom login page and auth system

admin-spa/src/routes/Login.tsx

@@ -0,0 +1,153 @@
+import React, { useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import { Alert, AlertDescription } from '@/components/ui/alert';
+import { Loader2, ArrowLeft } from 'lucide-react';
+import { __ } from '@/lib/i18n';
+
+export function Login() {
+  const [username, setUsername] = useState('');
+  const [password, setPassword] = useState('');
+  const [isLoading, setIsLoading] = useState(false);
+  const [error, setError] = useState('');
+  const navigate = useNavigate();
+
+  const handleLogin = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setIsLoading(true);
+    setError('');
+
+    try {
+      const response = await fetch(window.WNW_CONFIG.restUrl + '/auth/login', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        credentials: 'include',
+        body: JSON.stringify({ username, password }),
+      });
+
+      const data = await response.json();
+
+      if (response.ok && data.success) {
+        // Update global config
+        window.WNW_CONFIG.isAuthenticated = true;
+        window.WNW_CONFIG.currentUser = data.user;
+        window.WNW_CONFIG.nonce = data.nonce;
+        
+        // Redirect to dashboard
+        navigate('/dashboard');
+        
+        // Reload to ensure all auth state is fresh
+        window.location.reload();
+      } else {
+        setError(data.message || __('Invalid username or password'));
+      }
+    } catch (err) {
+      console.error('Login error:', err);
+      setError(__('Login failed. Please try again.'));
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  return (
+    <div className="min-h-screen flex items-center justify-center bg-gradient-to-br from-blue-50 to-indigo-100 dark:from-gray-900 dark:to-gray-800 p-4">
+      <div className="w-full max-w-md">
+        <div className="bg-white dark:bg-gray-800 rounded-lg shadow-xl p-8">
+          {/* Logo */}
+          <div className="text-center mb-8">
+            <h1 className="text-3xl font-bold text-gray-900 dark:text-white">
+              WooNooW
+            </h1>
+            <p className="text-gray-600 dark:text-gray-400 mt-2">
+              {__('Sign in to your admin dashboard')}
+            </p>
+          </div>
+
+          {/* Error Alert */}
+          {error && (
+            <Alert variant="destructive" className="mb-6">
+              <AlertDescription>{error}</AlertDescription>
+            </Alert>
+          )}
+
+          {/* Login Form */}
+          <form onSubmit={handleLogin} className="space-y-6">
+            <div>
+              <Label htmlFor="username">{__('Username or Email')}</Label>
+              <Input
+                id="username"
+                type="text"
+                value={username}
+                onChange={(e) => setUsername(e.target.value)}
+                placeholder={__('Enter your username')}
+                required
+                disabled={isLoading}
+                className="mt-1"
+                autoComplete="username"
+              />
+            </div>
+
+            <div>
+              <Label htmlFor="password">{__('Password')}</Label>
+              <Input
+                id="password"
+                type="password"
+                value={password}
+                onChange={(e) => setPassword(e.target.value)}
+                placeholder={__('Enter your password')}
+                required
+                disabled={isLoading}
+                className="mt-1"
+                autoComplete="current-password"
+              />
+            </div>
+
+            <Button
+              type="submit"
+              className="w-full"
+              disabled={isLoading}
+            >
+              {isLoading ? (
+                <>
+                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+                  {__('Signing in...')}
+                </>
+              ) : (
+                __('Sign In')
+              )}
+            </Button>
+          </form>
+
+          {/* Footer Links */}
+          <div className="mt-6 space-y-3">
+            <a
+              href={window.WNW_CONFIG.wpAdminUrl}
+              className="flex items-center justify-center gap-2 text-sm text-blue-600 hover:text-blue-700 dark:text-blue-400 transition-colors"
+            >
+              <ArrowLeft className="w-4 h-4" />
+              {__('Back to WordPress Admin')}
+            </a>
+            
+            <div className="text-center">
+              <a
+                href={window.WNW_CONFIG.siteUrl + '/wp-login.php?action=lostpassword'}
+                className="text-sm text-gray-600 hover:text-gray-700 dark:text-gray-400 transition-colors"
+              >
+                {__('Forgot password?')}
+              </a>
+            </div>
+          </div>
+        </div>
+
+        {/* Site Info */}
+        <div className="text-center mt-6 text-sm text-gray-600 dark:text-gray-400">
+          {window.WNW_CONFIG.siteName}
+        </div>
+      </div>
+    </div>
+  );
+}