maintaince module

public/userarea/manutenzioni/ajax/delete_category.php

@@ -0,0 +1,31 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $id = (int)($_POST['id'] ?? 0);
+
+    if ($id <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    // The FK is ON DELETE SET NULL, so a delete would silently orphan items:
+    // refuse while the category is still in use.
+    $stmt = $pdo->prepare("SELECT COUNT(*) FROM inv_equipment WHERE category_id = ?");
+    $stmt->execute([$id]);
+    $inUse = (int)$stmt->fetchColumn();
+
+    if ($inUse > 0) {
+        mnt_json_fail('Impossibile eliminare: la categoria è usata da ' . $inUse . ' attrezzature.');
+    }
+
+    $pdo->prepare("DELETE FROM inv_categories WHERE id = ?")->execute([$id]);
+
+    mnt_json_ok();
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}