Add Google login to mobile admin PWA

resources/js/admin/mobile/LoginPage.tsx

@@ -68,6 +68,8 @@ export default function MobileLoginPage() {
 
   const searchParams = React.useMemo(() => new URLSearchParams(location.search), [location.search]);
   const rawReturnTo = searchParams.get('return_to');
+  const oauthError = searchParams.get('error');
+  const oauthDescription = searchParams.get('error_description');
 
   const computeDefaultAfterLogin = React.useCallback(
     (abilityList?: string[]) => {
@@ -78,11 +80,31 @@ export default function MobileLoginPage() {
   );
 
   const fallbackTarget = computeDefaultAfterLogin();
-  const { finalTarget } = React.useMemo(
+  const { finalTarget, encodedFinal } = React.useMemo(
     () => resolveReturnTarget(rawReturnTo, fallbackTarget),
     [rawReturnTo, fallbackTarget],
   );
 
+  const oauthMessage = React.useMemo(() => {
+    if (!oauthError) {
+      return null;
+    }
+
+    const fallback = oauthDescription ?? oauthError;
+
+    return t(`login.oauth_errors.${oauthError}`, { defaultValue: fallback });
+  }, [oauthDescription, oauthError, t]);
+
+  const googleHref = React.useMemo(() => {
+    if (!encodedFinal) {
+      return '/event-admin/auth/google';
+    }
+
+    const params = new URLSearchParams({ return_to: encodedFinal });
+
+    return `/event-admin/auth/google?${params.toString()}`;
+  }, [encodedFinal]);
+
   React.useEffect(() => {
     if (status === 'authenticated') {
       navigate(finalTarget, { replace: true });
@@ -92,6 +114,7 @@ export default function MobileLoginPage() {
   const [login, setLogin] = React.useState('');
   const [password, setPassword] = React.useState('');
   const [error, setError] = React.useState<string | null>(null);
+  const [isRedirectingToGoogle, setIsRedirectingToGoogle] = React.useState(false);
   const [installBannerDismissed, setInstallBannerDismissedState] = React.useState(() => getInstallBannerDismissed());
   const installBanner = shouldShowInstallBanner(
     {
@@ -138,6 +161,15 @@ export default function MobileLoginPage() {
     });
   };
 
+  const handleGoogleLogin = React.useCallback(() => {
+    if (typeof window === 'undefined') {
+      return;
+    }
+
+    setIsRedirectingToGoogle(true);
+    window.location.assign(googleHref);
+  }, [googleHref]);
+
   return (
     <YStack
       minHeight="100vh"
@@ -176,6 +208,22 @@ export default function MobileLoginPage() {
         <MobileCard backgroundColor={surface} borderColor={border}>
           <form onSubmit={handleSubmit}>
             <YStack space="$3">
+              {oauthMessage ? (
+                <YStack
+                  borderRadius={12}
+                  padding="$2.5"
+                  borderWidth={1}
+                  borderColor={dangerText}
+                  backgroundColor={dangerBg}
+                >
+                  <Text fontSize="$sm" fontWeight="800" color={dangerText}>
+                    {t('login.oauth_error_title', 'Login aktuell nicht moeglich')}
+                  </Text>
+                  <Text fontSize="$xs" color={dangerText}>
+                    {oauthMessage}
+                  </Text>
+                </YStack>
+              ) : null}
               <MobileField
                 label={t('login.email', 'E-Mail-Adresse')}
                 hint={t('login.email_hint', 'Dein Benutzername ist deine E-Mail-Adresse.')}
@@ -249,6 +297,29 @@ export default function MobileLoginPage() {
                   </Text>
                 </XStack>
               </Button>
+
+              <Button
+                type="button"
+                onPress={handleGoogleLogin}
+                disabled={isRedirectingToGoogle || isSubmitting}
+                height={52}
+                borderRadius={16}
+                backgroundColor={surface}
+                borderColor={border}
+                borderWidth={1}
+                color={text}
+              >
+                <XStack alignItems="center" space="$2">
+                  {isRedirectingToGoogle ? (
+                    <Loader2 size={16} className="animate-spin" />
+                  ) : (
+                    <GoogleIcon size={18} />
+                  )}
+                  <Text fontSize="$sm" color={text} fontWeight="700">
+                    {t('login.google_cta', 'Mit Google anmelden')}
+                  </Text>
+                </XStack>
+              </Button>
             </YStack>
           </form>
         </MobileCard>
@@ -283,3 +354,14 @@ export default function MobileLoginPage() {
     </YStack>
   );
 }
+
+function GoogleIcon({ size = 18 }: { size?: number }) {
+  return (
+    <svg width={size} height={size} viewBox="0 0 24 24" aria-hidden>
+      <path
+        fill="#EA4335"
+        d="M12 11.999v4.8h6.7c-.3 1.7-2 4.9-6.7 4.9-4 0-7.4-3.3-7.4-7.4S8 6 12 6c2.3 0 3.9 1 4.8 1.9l3.3-3.2C18.1 2.6 15.3 1 12 1 5.9 1 1 5.9 1 12s4.9 11 11 11c6.3 0 10.5-4.4 10.5-10.6 0-.7-.1-1.2-.2-1.8H12z"
+      />
+    </svg>
+  );
+}