feat(#13): Show form elements depending on other form element values

legalconsenthub/app/components/FormEngine.vue

@@ -1,5 +1,5 @@
 <template>
-  <template v-for="(formElement, index) in props.modelValue" :key="formElement.id">
+  <template v-for="(formElement, index) in visibleFormElements" :key="formElement.id">
     <div class="group flex py-3 lg:py-4">
       <div class="flex-auto">
         <p v-if="formElement.title" class="font-semibold">{{ formElement.title }}</p>
@@ -8,7 +8,7 @@
           :is="getResolvedComponent(formElement)"
           :form-options="formElement.options"
           :disabled="props.disabled"
-          @update:form-options="updateFormOptions($event, index)"
+          @update:form-options="updateFormOptions($event, formElement.id)"
         />
         <TheComment
           v-if="applicationFormId && activeFormElement === formElement.id"
@@ -32,7 +32,7 @@
         </UDropdownMenu>
       </div>
     </div>
-    <USeparator v-if="index < props.modelValue.length - 1" />
+    <USeparator v-if="index < visibleFormElements.length - 1" />
   </template>
 </template>
 
@@ -45,6 +45,7 @@ import { useCommentStore } from '~~/stores/useCommentStore'
 
 const props = defineProps<{
   modelValue: FormElementDto[]
+  visibilityMap: Map<string, boolean>
   applicationFormId?: string
   disabled?: boolean
 }>()
@@ -68,6 +69,10 @@ const route = useRoute()
 const activeFormElement = ref('')
 const openDropdownId = ref<string | null>(null)
 
+const visibleFormElements = computed(() => {
+  return props.modelValue.filter((element) => props.visibilityMap.get(element.id) !== false)
+})
+
 function handleDropdownToggle(formElementId: string, isOpen: boolean) {
   openDropdownId.value = isOpen ? formElementId : null
 }
@@ -112,14 +117,15 @@ function getDropdownItems(formElementId: string, formElementPosition: number): D
   return [items]
 }
 
-function updateFormOptions(formOptions: FormOptionDto[], formElementIndex: number) {
-  console.log('Updating form options for element index:', formElementIndex, formOptions)
-  const updatedModelValue = [...props.modelValue]
-  const currentElement = updatedModelValue[formElementIndex]
-  if (currentElement) {
-    updatedModelValue[formElementIndex] = { ...currentElement, options: formOptions }
-    emit('update:modelValue', updatedModelValue)
-  }
+function updateFormOptions(formOptions: FormOptionDto[], formElementId: string) {
+  console.log('Updating form options for element ID:', formElementId, formOptions)
+  const updatedModelValue = props.modelValue.map((element) => {
+    if (element.id === formElementId) {
+      return { ...element, options: formOptions }
+    }
+    return element
+  })
+  emit('update:modelValue', updatedModelValue)
 }
 
 function toggleComments(formElementId: string) {

legalconsenthub/app/components/FormStepperWithNavigation.vue

@@ -8,25 +8,31 @@
       {{ currentFormElementSection.title }}
     </h1>
 
-    <template v-if="currentFormElementSection?.formElementSubSections">
-      <UCard
-        v-for="subsection in currentFormElementSection.formElementSubSections"
-        :key="subsection.id"
-        variant="subtle"
-        class="mb-6"
-      >
-        <div class="mb-4">
-          <h2 class="text-lg font-semibold text-highlighted">{{ subsection.title }}</h2>
-          <p v-if="subsection.subtitle" class="text-sm text-dimmed">{{ subsection.subtitle }}</p>
-        </div>
+    <UCard
+      v-for="subsection in visibleSubsections"
+      :key="subsection.id"
+      variant="subtle"
+      class="mb-6"
+    >
+      <div class="mb-4">
+        <h2 class="text-lg font-semibold text-highlighted">{{ subsection.title }}</h2>
+        <p v-if="subsection.subtitle" class="text-sm text-dimmed">{{ subsection.subtitle }}</p>
+      </div>
         <FormEngine
           v-model="subsection.formElements"
+          :visibility-map="visibilityMap"
           :application-form-id="applicationFormId"
           :disabled="disabled"
           @add:input-form="(position) => handleAddInputForm(position, subsection.id)"
         />
-      </UCard>
-    </template>
+    </UCard>
+
+    <UCard v-if="visibleSubsections.length === 0" variant="subtle" class="mb-6">
+      <div class="text-center py-8 text-dimmed">
+        <UIcon name="i-lucide-eye-off" class="w-12 h-12 mx-auto mb-3 opacity-50" />
+        <p>{{ $t('applicationForms.noVisibleElements') }}</p>
+      </div>
+    </UCard>
 
     <div class="flex gap-2 justify-between">
       <UButton leading-icon="i-lucide-arrow-left" :disabled="!stepper?.hasPrev" @click="handleNavigate('backward')">
@@ -76,6 +82,30 @@ const { stepper, activeStepperItemIndex, stepperItems, currentFormElementSection
   computed(() => props.formElementSections)
 )
 
+const allFormElements = computed(() => {
+  return props.formElementSections.flatMap(section =>
+    section.formElementSubSections?.flatMap(subsection =>
+      subsection.formElements
+    ) ?? []
+  )
+})
+
+const { evaluateVisibility } = useFormElementVisibility()
+
+const visibilityMap = computed(() => {
+  return evaluateVisibility(allFormElements.value)
+})
+
+const visibleSubsections = computed(() => {
+  if (!currentFormElementSection.value?.formElementSubSections) {
+    return []
+  }
+  
+  return currentFormElementSection.value.formElementSubSections.filter(subsection => {
+    return subsection.formElements.some(element => visibilityMap.value.get(element.id) !== false)
+  })
+})
+
 onMounted(() => {
   if (props.initialSectionIndex !== undefined) {
     activeStepperItemIndex.value = props.initialSectionIndex

legalconsenthub/app/composables/useApplicationFormValidator.ts

@@ -13,10 +13,17 @@ export function useApplicationFormValidator() {
     return Object.values(ComplianceStatus)[highestComplianceNumber] ?? ComplianceStatus.NonCritical
   }
 
-  function validateFormElements(formElements: FormElementDto[]): Map<FormElementId, ComplianceStatus> {
+  function validateFormElements(
+    formElements: FormElementDto[],
+    visibilityMap?: Map<string, boolean>
+  ): Map<FormElementId, ComplianceStatus> {
     formElementComplianceMap.value.clear()
 
     formElements.forEach((formElement) => {
+      if (visibilityMap && visibilityMap.get(formElement.id) === false) {
+        return
+      }
+
       if (!complianceCheckableElementTypes.includes(formElement.type)) return
 
       // Reset any previously set compliance status when all options are false

legalconsenthub/app/composables/useFormElementVisibility.ts

@@ -0,0 +1,83 @@
+import type { FormElementDto, VisibilityConditionOperator } from '~~/.api-client'
+import { VisibilityConditionOperator as VCOperator, VisibilityConditionType as VCType } from '~~/.api-client'
+
+export function useFormElementVisibility() {
+  function evaluateVisibility(allFormElements: FormElementDto[]): Map<string, boolean> {
+    const formElementsByRef = buildFormElementsMap(allFormElements)
+    const visibilityMap = new Map<string, boolean>()
+
+    allFormElements.forEach((element) => {
+      const isVisible = isElementVisible(element, formElementsByRef, visibilityMap)
+      visibilityMap.set(element.id, isVisible)
+    })
+
+    return visibilityMap
+  }
+
+  function buildFormElementsMap(formElements: FormElementDto[]): Map<string, FormElementDto> {
+    const map = new Map<string, FormElementDto>()
+    formElements.forEach((element) => {
+      if (element.reference) {
+        map.set(element.reference, element)
+      }
+    })
+    return map
+  }
+
+  function isElementVisible(
+    element: FormElementDto,
+    formElementsByRef: Map<string, FormElementDto>,
+    _visibilityMap: Map<string, boolean>
+  ): boolean {
+    if (!element.visibilityCondition) {
+      return true
+    }
+
+    const condition = element.visibilityCondition
+
+    const sourceElement = formElementsByRef.get(condition.sourceFormElementReference)
+    if (!sourceElement) {
+      return false
+    }
+
+    const sourceValue = getFormElementValue(sourceElement)
+
+    const operator = condition.operator || VCOperator.Equals
+    const conditionMet = evaluateCondition(sourceValue, condition.expectedValue, operator)
+
+    return condition.conditionType === VCType.Show ? conditionMet : !conditionMet
+  }
+
+  function getFormElementValue(element: FormElementDto): string {
+    const selectedOption = element.options.find((option) => option.value === 'true')
+    return selectedOption?.label || ''
+  }
+
+  function evaluateCondition(
+    actualValue: string,
+    expectedValue: string,
+    operator: VisibilityConditionOperator
+  ): boolean {
+    let result: boolean
+    switch (operator) {
+      case VCOperator.Equals:
+        result = actualValue.toLowerCase() === expectedValue.toLowerCase()
+        return result
+      case VCOperator.NotEquals:
+        result = actualValue.toLowerCase() !== expectedValue.toLowerCase()
+        return result
+      case VCOperator.IsEmpty:
+        result = actualValue === ''
+        return result
+      case VCOperator.IsNotEmpty:
+        result = actualValue !== ''
+        return result
+      default:
+        return false
+    }
+  }
+
+  return {
+    evaluateVisibility
+  }
+}

legalconsenthub/app/pages/application-forms/[id]/[sectionIndex].vue

@@ -75,6 +75,7 @@ const {
 
 const { updateApplicationForm: updateForm, submitApplicationForm } = useApplicationForm()
 const { validateFormElements, getHighestComplianceStatus } = useApplicationFormValidator()
+const { evaluateVisibility } = useFormElementVisibility()
 const { canWriteApplicationForms } = usePermissions()
 const userStore = useUserStore()
 const { user } = storeToRefs(userStore)
@@ -100,10 +101,14 @@ const allFormElements = computed(() => {
   )
 })
 
+const visibilityMap = computed(() => {
+  return evaluateVisibility(allFormElements.value)
+})
+
 watch(
   () => allFormElements.value,
   (updatedFormElements: FormElementDto[]) => {
-    validationMap.value = validateFormElements(updatedFormElements)
+    validationMap.value = validateFormElements(updatedFormElements, visibilityMap.value)
     validationStatus.value = getHighestComplianceStatus()
   },
   { deep: true }

legalconsenthub/app/pages/create.vue

@@ -53,6 +53,7 @@ import { useUserStore } from '~~/stores/useUserStore'
 const { getAllApplicationFormTemplates } = await useApplicationFormTemplate()
 const { createApplicationForm, submitApplicationForm } = useApplicationForm()
 const { validateFormElements, getHighestComplianceStatus } = useApplicationFormValidator()
+const { evaluateVisibility } = useFormElementVisibility()
 const { canWriteApplicationForms } = usePermissions()
 const userStore = useUserStore()
 const { selectedOrganization } = storeToRefs(userStore)
@@ -87,10 +88,14 @@ const allFormElements = computed(() => {
   )
 })
 
+const visibilityMap = computed(() => {
+  return evaluateVisibility(allFormElements.value)
+})
+
 watch(
   () => allFormElements.value,
   (updatedFormElements: FormElementDto[]) => {
-    validationMap.value = validateFormElements(updatedFormElements)
+    validationMap.value = validateFormElements(updatedFormElements, visibilityMap.value)
     validationStatus.value = getHighestComplianceStatus()
   },
   { deep: true }

legalconsenthub/i18n/locales/de.json

@@ -6,6 +6,7 @@
     "noPermission": "Keine Berechtigung",
     "noPermissionDescription": "Sie haben keine Berechtigung zum Erstellen von Anträgen.",
     "backToOverview": "Zurück zur Übersicht",
+    "noVisibleElements": "Alle Formularelemente in diesem Abschnitt sind ausgeblendet",
     "deleteConfirm": "Möchten Sie wirklich den Mitbestimmungsantrag \"{name}\" löschen?",
     "deleteTitle": "Mitbestimmungsantrag löschen",
     "lastEditedBy": "Zuletzt bearbeitet von",

legalconsenthub/i18n/locales/en.json

@@ -6,6 +6,7 @@
     "noPermission": "No Permission",
     "noPermissionDescription": "You do not have permission to create applications.",
     "backToOverview": "Back to Overview",
+    "noVisibleElements": "All form elements in this section are hidden",
     "deleteConfirm": "Do you really want to delete the co-determination application \"{name}\"?",
     "deleteTitle": "Delete Co-determination Application",
     "lastEditedBy": "Last edited by",