cron low stock - overdue invoice

app/cron/alert_overdue_invoices.php

@@ -0,0 +1,25 @@
+<?php
+/**
+ * alert_overdue_invoices.php — Called by Node.js scheduler daily at 9am.
+ * Returns companies that have one or more issued sales invoices past their due date.
+ * status = 1 means issued but not fully settled. status = 2 means fully settled.
+ * Response: { success: 1, alerts: [{ company_id, count }] }
+ */
+require __DIR__ . '/../assets/utils/cron_auth.php';
+
+$sth = $pdo1->query(
+    "SELECT company_id, COUNT(*) AS count
+     FROM td_invoice
+     WHERE company_id > 0
+       AND doc_type   = 'invoice'
+       AND status     = 1
+       AND due_date IS NOT NULL
+       AND due_date   < CURDATE()
+     GROUP BY company_id
+     HAVING count > 0"
+);
+
+$answer['success'] = 1;
+$answer['alerts']  = $sth->fetchAll(PDO::FETCH_ASSOC);
+
+exit(json_encode($answer));