Ablaufdatum-Berechnung

v2_adminpanel/templates/batch_form.html

@@ -66,14 +66,28 @@
                 </select>
             </div>
             
-            <div class="col-md-3">
+            <div class="col-md-2">
                 <label for="validFrom" class="form-label">Gültig ab</label>
                 <input type="date" class="form-control" id="validFrom" name="valid_from" required>
             </div>
             
-            <div class="col-md-3">
+            <div class="col-md-1">
+                <label for="duration" class="form-label">Laufzeit</label>
+                <input type="number" class="form-control" id="duration" name="duration" value="1" min="1" required>
+            </div>
+            
+            <div class="col-md-2">
+                <label for="durationType" class="form-label">Einheit</label>
+                <select class="form-select" id="durationType" name="duration_type" required>
+                    <option value="days">Tage</option>
+                    <option value="months">Monate</option>
+                    <option value="years" selected>Jahre</option>
+                </select>
+            </div>
+            
+            <div class="col-md-2">
                 <label for="validUntil" class="form-label">Gültig bis</label>
-                <input type="date" class="form-control" id="validUntil" name="valid_until" required>
+                <input type="date" class="form-control" id="validUntil" name="valid_until" readonly style="background-color: #e9ecef;">
             </div>
         </div>
 
@@ -111,15 +125,47 @@
 </div>
 
 <script>
+// Funktion zur Berechnung des Ablaufdatums
+function calculateValidUntil() {
+    const validFrom = document.getElementById('validFrom').value;
+    const duration = parseInt(document.getElementById('duration').value) || 1;
+    const durationType = document.getElementById('durationType').value;
+    
+    if (!validFrom) return;
+    
+    const startDate = new Date(validFrom);
+    let endDate = new Date(startDate);
+    
+    switch(durationType) {
+        case 'days':
+            endDate.setDate(endDate.getDate() + duration);
+            break;
+        case 'months':
+            endDate.setMonth(endDate.getMonth() + duration);
+            break;
+        case 'years':
+            endDate.setFullYear(endDate.getFullYear() + duration);
+            break;
+    }
+    
+    // Ein Tag abziehen, da der Starttag mitgezählt wird
+    endDate.setDate(endDate.getDate() - 1);
+    
+    document.getElementById('validUntil').value = endDate.toISOString().split('T')[0];
+}
+
+// Event Listener für Änderungen
+document.getElementById('validFrom').addEventListener('change', calculateValidUntil);
+document.getElementById('duration').addEventListener('input', calculateValidUntil);
+document.getElementById('durationType').addEventListener('change', calculateValidUntil);
+
 // Setze heutiges Datum als Standard
 document.addEventListener('DOMContentLoaded', function() {
     const today = new Date().toISOString().split('T')[0];
     document.getElementById('validFrom').value = today;
     
-    // Setze valid_until auf 1 Jahr später
-    const oneYearLater = new Date();
-    oneYearLater.setFullYear(oneYearLater.getFullYear() + 1);
-    document.getElementById('validUntil').value = oneYearLater.toISOString().split('T')[0];
+    // Berechne initiales Ablaufdatum
+    calculateValidUntil();
     
     // Initialisiere Select2 für Kundenauswahl
     $('#customerSelect').select2({