feat: add email verification resend functionality to login page and backend route

app/login/page.tsx

@@ -13,7 +13,10 @@ const LoginPage = () => {
     const [email, setEmail] = useState('');
     const [password, setPassword] = useState('');
     const [error, setError] = useState('');
+    const [isUnverified, setIsUnverified] = useState(false);
     const [loading, setLoading] = useState(false);
+    const [resendLoading, setResendLoading] = useState(false);
+    const [resendMessage, setResendMessage] = useState('');
     const router = useRouter();
     const searchParams = useSearchParams();
     
@@ -24,6 +27,8 @@ const LoginPage = () => {
         e.preventDefault();
         setLoading(true);
         setError('');
+        setIsUnverified(false);
+        setResendMessage('');
 
         try {
             const res = await fetch('/api/auth/login', {
@@ -35,6 +40,9 @@ const LoginPage = () => {
             const data = await res.json();
 
             if (!res.ok) {
+                if (res.status === 403 && data.error?.includes('vérifier')) {
+                    setIsUnverified(true);
+                }
                 throw new Error(data.error || 'Erreur lors de la connexion');
             }
 
@@ -48,6 +56,33 @@ const LoginPage = () => {
         }
     };
 
+    const handleResendVerification = async () => {
+        setResendLoading(true);
+        setError('');
+        setResendMessage('');
+
+        try {
+            const res = await fetch('/api/auth/resend-verification', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ email }),
+            });
+
+            const data = await res.json();
+
+            if (!res.ok) {
+                throw new Error(data.error || "Erreur lors de l'envoi");
+            }
+
+            setResendMessage(data.message);
+            setIsUnverified(false); // Hide the resend link after successful send
+        } catch (err: any) {
+            setError(err.message);
+        } finally {
+            setResendLoading(false);
+        }
+    };
+
     return (
         <div className="min-h-[80vh] flex items-center justify-center bg-gray-50 py-12 px-4 sm:px-6 lg:px-8">
             <div className="max-w-md w-full space-y-8">
@@ -69,10 +104,29 @@ const LoginPage = () => {
                         </div>
                     )}
 
+                    {resendMessage && (
+                        <div className="bg-blue-50 border-l-4 border-blue-500 p-4 rounded flex items-center gap-3 text-blue-700 text-sm">
+                            <CheckCircle2 className="w-5 h-5 text-blue-500 flex-shrink-0" />
+                            <p>{resendMessage}</p>
+                        </div>
+                    )}
+
                     {(error || queryError) && (
-                        <div className="bg-red-50 border-l-4 border-red-500 p-4 rounded flex items-center gap-3 text-red-700 text-sm">
-                            <AlertCircle className="w-5 h-5 text-red-500 flex-shrink-0" />
-                            <p>{error || queryError}</p>
+                        <div className="bg-red-50 border-l-4 border-red-500 p-4 rounded flex flex-col gap-2 text-red-700 text-sm">
+                            <div className="flex items-center gap-3">
+                                <AlertCircle className="w-5 h-5 text-red-500 flex-shrink-0" />
+                                <p>{error || queryError}</p>
+                            </div>
+                            {isUnverified && (
+                                <button
+                                    type="button"
+                                    onClick={handleResendVerification}
+                                    disabled={resendLoading}
+                                    className="ml-8 text-left font-bold underline hover:text-red-800 disabled:opacity-50"
+                                >
+                                    {resendLoading ? 'Envoi en cours...' : "Renvoyer l'email de vérification"}
+                                </button>
+                            )}
                         </div>
                     )}