document number sequence

app/assets/utils/classes/PurchaseOrderManager.php

@@ -1,4 +1,5 @@
 <?php
+require_once __DIR__ . '/DocumentNumberManager.php';
 require_once __DIR__ . '/../classes_ac/PostingWindowGuard.php';
 
 /**
@@ -59,26 +60,10 @@ class PurchaseOrderManager {
     /**
      * Generate next sequential PO number in PO-YYYYMMDD-XXXX format.
      */
-    private function generatePoNumber(): string
+    private function generatePoNumber(array $data = []): string
     {
-        $prefix = 'PO-' . date('Ymd') . '-';
-
-        $sth = $this->pdo->prepare(
-            "SELECT po_number FROM td_purchase_order
-             WHERE company_id   = :company_id
-               AND po_number LIKE :prefix
-             ORDER BY po_number DESC
-             LIMIT 1"
-        );
-        $sth->execute([
-            ':company_id' => $this->company_id,
-            ':prefix'     => $prefix . '%',
-        ]);
-
-        $last = $sth->fetchColumn();
-        $seq  = $last ? ((int)substr($last, -4) + 1) : 1;
-
-        return $prefix . str_pad($seq, 4, '0', STR_PAD_LEFT);
+        return (new DocumentNumberManager($this->pdo, $this->company_id))
+            ->resolveNumber($data, 'purchase_order', 'td_purchase_order', 'po_number');
     }
 
     /**
@@ -433,7 +418,7 @@ class PurchaseOrderManager {
                 ':uuid'          => bin2hex(random_bytes(16)),
                 ':source_id'     => $source_id,
                 ':source'        => $source,
-                ':po_number'     => $this->generatePoNumber(),
+                ':po_number'     => $this->generatePoNumber($data),
                 ':contact_id'    => (int)($data['contact_id']    ?? 0),
                 ':department_id' => (int)($data['department_id'] ?? 0),
                 ':po_date'       => $data['po_date']             ?? date('Y-m-d'),