fix for createRefund

src/services/accounting-service.js

@@ -900,10 +900,7 @@ async function createExpense(data) {
 
 
 /**
- * Erstellt einen QBO Deposit für einen Vendor-Refund (Geld kam zurück aufs Konto).
- *
- * Buchhalterisch: Der Refund wird gegen die ursprüngliche Expense-Kategorie
- * gebucht, wodurch sich der Aufwand in dieser Kategorie reduziert.
+ * Erstellt einen QBO Deposit oder Purchase Credit für einen Vendor-Refund.
  *
  * @param {Object} data
  * @param {string} data.vendorId           - Pflicht (von wem kam der Refund)
@@ -953,8 +950,39 @@ async function createRefund(data) {
     );
     const vendorName = vendorRow.rows[0]?.display_name || data.vendorId;
 
-    // ── QBO Deposit Payload ──
-    const payload = {
+    const { companyId, baseUrl } = getClientInfo();
+    const isCreditCard = depositAcct.account_type === 'Credit Card';
+
+    let url;
+    let payload;
+    let entityTypeLabel;
+
+    // ── Verzweigung: Credit Card Credit (Purchase) vs. Bank (Deposit) ──
+    if (isCreditCard) {
+        entityTypeLabel = 'Purchase';
+        url = withMinorVersion(`${baseUrl}/v3/company/${companyId}/purchase`);
+        payload = {
+            AccountRef: { value: depositAcct.qbo_id, name: depositAcct.name },
+            EntityRef: { value: data.vendorId, type: 'Vendor', name: vendorName },
+            TxnDate: data.txnDate,
+            PaymentType: 'CreditCard',
+            Credit: true, // Zwingend erforderlich für einen CC Refund
+            Line: [{
+                DetailType: 'AccountBasedExpenseLineDetail',
+                Amount: amount,
+                Description: data.memo || `Refund from ${vendorName}`,
+                AccountBasedExpenseLineDetail: {
+                    AccountRef: { value: categoryAcct.qbo_id, name: categoryAcct.name }
+                }
+            }]
+        };
+        if (data.refNo) payload.DocNumber = String(data.refNo).slice(0, 21);
+        if (data.memo)  payload.PrivateNote = String(data.memo);
+
+    } else {
+        entityTypeLabel = 'Deposit';
+        url = withMinorVersion(`${baseUrl}/v3/company/${companyId}/deposit`);
+        payload = {
             DepositToAccountRef: { value: depositAcct.qbo_id, name: depositAcct.name },
             TxnDate: data.txnDate,
             Line: [{
@@ -963,18 +991,19 @@ async function createRefund(data) {
                 Description: data.memo || `Refund from ${vendorName}`,
                 DepositLineDetail: {
                     AccountRef: { value: categoryAcct.qbo_id, name: categoryAcct.name },
-                Entity: { value: data.vendorId, type: 'Vendor' }
+                    // Korrigierte QBO Entity-Struktur
+                    Entity: { 
+                        Type: 'Vendor', 
+                        EntityRef: { value: data.vendorId, name: vendorName } 
+                    }
                 }
             }]
         };
-
         if (data.refNo) payload.Line[0].DepositLineDetail.CheckNum = String(data.refNo).slice(0, 21);
         if (data.memo)  payload.PrivateNote = String(data.memo);
+    }
 
-    const { companyId, baseUrl } = getClientInfo();
-    const url = withMinorVersion(`${baseUrl}/v3/company/${companyId}/deposit`);
-
-    const requestSummary = `REFUND | ${vendorName} → ${depositAcct.name} | ${categoryAcct.name} | ${data.txnDate} | $${amount.toFixed(2)}`;
+    const requestSummary = `REFUND (${entityTypeLabel}) | ${vendorName} → ${depositAcct.name} | ${categoryAcct.name} | ${data.txnDate} | $${amount.toFixed(2)}`;
 
     let qboResponse;
     try {
@@ -988,7 +1017,7 @@ async function createRefund(data) {
     } catch (err) {
         await writeAuditLog({
             action: 'refund.create',
-            entityType: 'Deposit',
+            entityType: entityTypeLabel,
             status: 'error',
             requestExcerpt: requestSummary,
             responseExcerpt: err.message
@@ -1002,34 +1031,35 @@ async function createRefund(data) {
         ).join('; ');
         await writeAuditLog({
             action: 'refund.create',
-            entityType: 'Deposit',
+            entityType: entityTypeLabel,
             status: 'error',
             requestExcerpt: requestSummary,
             responseExcerpt: msg
         });
-        const err = new Error('QBO Deposit (refund) create failed: ' + msg);
+        const err = new Error(`QBO ${entityTypeLabel} (refund) create failed: ${msg}`);
         err.qboFault = qboResponse.Fault;
         throw err;
     }
 
-    const deposit = qboResponse.Deposit;
-    if (!deposit || !deposit.Id) throw new Error('QBO returned no Deposit id');
+    // Dynamisches Extrahieren basierend auf dem Entity-Typ
+    const resultEntity = isCreditCard ? qboResponse.Purchase : qboResponse.Deposit;
+    if (!resultEntity || !resultEntity.Id) throw new Error(`QBO returned no ${entityTypeLabel} id`);
 
     await writeAuditLog({
         action: 'refund.create',
-        entityType: 'Deposit',
-        entityQboId: deposit.Id,
+        entityType: entityTypeLabel,
+        entityQboId: resultEntity.Id,
         status: 'success',
         requestExcerpt: requestSummary,
-        responseExcerpt: `Deposit ${deposit.Id} created, total $${Number(deposit.TotalAmt).toFixed(2)}`
+        responseExcerpt: `${entityTypeLabel} ${resultEntity.Id} created, total $${Number(resultEntity.TotalAmt).toFixed(2)}`
     });
 
-    console.log(`✅ QBO Refund recorded: Deposit ${deposit.Id} — ${requestSummary}`);
+    console.log(`✅ QBO Refund recorded: ${entityTypeLabel} ${resultEntity.Id} — ${requestSummary}`);
 
     return {
-        id: deposit.Id,
-        txnDate: deposit.TxnDate,
-        totalAmt: Number(deposit.TotalAmt),
+        id: resultEntity.Id,
+        txnDate: resultEntity.TxnDate,
+        totalAmt: Number(resultEntity.TotalAmt),
         vendorName,
         depositAccountName: depositAcct.name,
         categoryName: categoryAcct.name