fix(documents): restrict advance invoice creation to projects

frontend/pages/createDocument/edit/[[id]].vue

@@ -104,10 +104,36 @@ const bankaccounts = ref([])
 const texttemplates = ref([])
 const units = ref([])
 const tenantUsers = ref([])
-const documentTypeItems = computed(() => Object.keys(dataStore.documentTypesForCreation).map((key) => ({
-  label: dataStore.documentTypesForCreation[key].labelSingle,
-  type: key
-})))
+const originalDocumentType = ref(null)
+const canUseAdvanceInvoice = computed(() => originalDocumentType.value === 'advanceInvoices' || (
+    route.query.type === 'advanceInvoices'
+    && route.query.loadMode === 'advanceInvoice'
+    && Number.isSafeInteger(Number(route.query.project))
+    && Number(route.query.project) > 0
+    && !route.params.id
+    && !route.query.createddocument
+    && !route.query.optionsToImport
+    && !route.query.linkedDocuments
+    && !route.query.templateId
+    && !isTemplateMode.value
+))
+const documentTypeItems = computed(() => Object.keys(dataStore.documentTypesForCreation)
+    .filter(key => key !== 'advanceInvoices' || canUseAdvanceInvoice.value)
+    .map((key) => ({
+      label: dataStore.documentTypesForCreation[key].labelSingle,
+      type: key
+    })))
+const validateAdvanceInvoiceCreation = () => {
+  if (itemInfo.value.type !== 'advanceInvoices' || isTemplateMode.value) return true
+  if (canUseAdvanceInvoice.value && (route.params.id || normalizeEntityId(itemInfo.value.project))) return true
+
+  toast.add({
+    title: 'Abschlagsrechnung nur im Projekt erstellen',
+    description: 'Bitte den Button „Abschlagsrechnung“ innerhalb eines Projekts verwenden.',
+    color: 'error'
+  })
+  return false
+}
 const taxTypeItems = [
   { key: 'Standard', label: 'Standard' },
   { key: '13b UStG', label: '13b UStG' },
@@ -391,6 +417,7 @@ const setupPage = async () => {
     if (route.params.id) {
       console.log(route.params)
       itemInfo.value = await useEntities("createddocuments").selectSingle(route.params.id,'',false)
+      originalDocumentType.value = itemInfo.value.type
       itemInfo.value.rows = normalizeCreatedDocumentRows(itemInfo.value.rows)
       itemInfo.value.taxType = normalizeTaxTypeValue(itemInfo.value.taxType)
       await setContactPersonData()
@@ -699,6 +726,10 @@ const setupPage = async () => {
 
 
   itemInfo.value.rows = normalizeCreatedDocumentRows(itemInfo.value.rows)
+  if (!validateAdvanceInvoiceCreation()) {
+    await router.replace('/createDocument')
+    return
+  }
   loaded.value = true
 
 }
@@ -1817,6 +1848,7 @@ const saveDocumentTemplate = async () => {
 }
 
 const saveDocument = async (state, resetup = false) => {
+  if (!validateAdvanceInvoiceCreation()) return
 
   itemInfo.value.state = state
   normalizeCustomSurchargePercentage()