Refactor: Extract mapLandingSettings to reduce duplication

Co-authored-by: danielswiatek <9080990+danielswiatek@users.noreply.github.com>

Author: Copilot

apps/frontend/src/components/forms/unterveranstaltung/FormUnterveranstaltungLandingSettings.vue

@@ -47,6 +47,25 @@ const props = defineProps<{
   onUpdate?: () => void
 }>()
 
+// Helper function to map landing settings from prop
+function mapLandingSettings(settings: any) {
+  return {
+    heroTitle: settings?.heroTitle ?? '',
+    heroSubtitle: settings?.heroSubtitle ?? '',
+    eventDetailsTitle: settings?.eventDetailsTitle ?? '',
+    eventDetailsContent: settings?.eventDetailsContent ?? '',
+    miscellaneousVisible: settings?.miscellaneousVisible ?? false,
+    miscellaneousTitle: settings?.miscellaneousTitle ?? '',
+    miscellaneousSubtitle: settings?.miscellaneousSubtitle ?? '',
+    faqVisible: settings?.faqVisible ?? false,
+    faqEmail: settings?.faqEmail ?? '',
+    instagramVisible: settings?.instagramVisible ?? false,
+    instagramUrl: settings?.instagramUrl ?? '',
+    facebookVisible: settings?.facebookVisible ?? false,
+    facebookUrl: settings?.facebookUrl ?? '',
+  }
+}
+
 const heroImages = ref<IHeroImages[]>(props.unterveranstaltung?.landingSettings?.heroImages ?? [])
 
 const unterveranstaltungId = props.unterveranstaltung?.id
@@ -60,42 +79,14 @@ const miscellaneousItems = ref<IMiscellaneousItem[]>(
 
 const showNotification = ref(false)
 
-const landingSettings = ref({
-  heroTitle: props.unterveranstaltung?.landingSettings?.heroTitle ?? '',
-  heroSubtitle: props.unterveranstaltung?.landingSettings?.heroSubtitle ?? '',
-  eventDetailsTitle: props.unterveranstaltung?.landingSettings?.eventDetailsTitle ?? '',
-  eventDetailsContent: props.unterveranstaltung?.landingSettings?.eventDetailsContent ?? '',
-  miscellaneousVisible: props.unterveranstaltung?.landingSettings?.miscellaneousVisible ?? false,
-  miscellaneousTitle: props.unterveranstaltung?.landingSettings?.miscellaneousTitle ?? '',
-  miscellaneousSubtitle: props.unterveranstaltung?.landingSettings?.miscellaneousSubtitle ?? '',
-  faqVisible: props.unterveranstaltung?.landingSettings?.faqVisible ?? false,
-  faqEmail: props.unterveranstaltung?.landingSettings?.faqEmail ?? '',
-  instagramVisible: props.unterveranstaltung?.landingSettings?.instagramVisible ?? false,
-  instagramUrl: props.unterveranstaltung?.landingSettings?.instagramUrl ?? '',
-  facebookVisible: props.unterveranstaltung?.landingSettings?.facebookVisible ?? false,
-  facebookUrl: props.unterveranstaltung?.landingSettings?.facebookUrl ?? '',
-})
+const landingSettings = ref(mapLandingSettings(props.unterveranstaltung?.landingSettings))
 
 // Watch for prop changes and update local state
 watch(
   () => props.unterveranstaltung?.landingSettings,
   (newSettings) => {
     if (newSettings) {
-      landingSettings.value = {
-        heroTitle: newSettings.heroTitle ?? '',
-        heroSubtitle: newSettings.heroSubtitle ?? '',
-        eventDetailsTitle: newSettings.eventDetailsTitle ?? '',
-        eventDetailsContent: newSettings.eventDetailsContent ?? '',
-        miscellaneousVisible: newSettings.miscellaneousVisible ?? false,
-        miscellaneousTitle: newSettings.miscellaneousTitle ?? '',
-        miscellaneousSubtitle: newSettings.miscellaneousSubtitle ?? '',
-        faqVisible: newSettings.faqVisible ?? false,
-        faqEmail: newSettings.faqEmail ?? '',
-        instagramVisible: newSettings.instagramVisible ?? false,
-        instagramUrl: newSettings.instagramUrl ?? '',
-        facebookVisible: newSettings.facebookVisible ?? false,
-        facebookUrl: newSettings.facebookUrl ?? '',
-      }
+      landingSettings.value = mapLandingSettings(newSettings)
       heroImages.value = newSettings.heroImages ?? []
       miscellaneousItems.value = newSettings.miscellaneousItems ?? []
       deletedHeroImagesIds.value = []