update

app/Integrations/Whmcs/DTOs/InvoiceData.php

@@ -15,6 +15,8 @@ class InvoiceData
         public readonly int $discountAmount,
         public readonly int $tax,
         public readonly int $total,
+        /** Số đã thu; hoá đơn WHMCS Paid coi như thu đủ, còn lại lấy phần credit đã áp. */
+        public readonly int $amountPaid,
         public readonly int $status,
         public readonly ?string $paymentMethod,
         public readonly ?string $dueDate,

app/Integrations/Whmcs/Transformers/InvoiceTransformer.php

@@ -24,6 +24,8 @@ class InvoiceTransformer
         $legacyId = (int) $row['id'];
 
         $dueDate = $this->nullableDate($row['duedate'] ?? null);
+        $status = $this->mapStatus($row['status'], $dueDate);
+        $total = (int) round((float) $row['total']);
         $whmcsOrderId = $this->extractor->orderIdFor($legacyId);
 
         $rawItems = $this->extractor->items($legacyId);
@@ -46,8 +48,11 @@ class InvoiceTransformer
             subTotal: (int) round((float) $row['subtotal']),
             discountAmount: $discountAmount,
             tax: (int) round((float) $row['tax'] + (float) $row['tax2']),
-            total: (int) round((float) $row['total']),
-            status: $this->mapStatus($row['status'], $dueDate),
+            total: $total,
+            // Không có amount_paid thì mọi hoá đơn WHMCS đã thanh toán sẽ hiện "chưa thu"
+            // và outstanding = total trên toàn bộ dữ liệu import.
+            amountPaid: $status === 2 ? $total : (int) round((float) ($row['credit'] ?? 0)),
+            status: $status,
             paymentMethod: $row['paymentmethod'] ?: null,
             dueDate: $dueDate,
             paidAt: $this->nullableDate($row['datepaid'] ?? null),

app/Integrations/Whmcs/Writers/InvoiceWriter.php

@@ -29,6 +29,7 @@ class InvoiceWriter
                     'discount_amount' => $data->discountAmount,
                     'tax' => $data->tax,
                     'total' => $data->total,
+                    'amount_paid' => $data->amountPaid,
                     'status' => $data->status,
                     'payment_method' => $data->paymentMethod,
                     'due_date' => $data->dueDate,