<?php
header('Content-Type: application/json');

ini_set('display_errors', 1);
error_reporting(E_ALL);

require_once(__DIR__ . '/include/headscript.php'); // così hai Auth + $iduserlogin + DBHandlerSelect

try {
    if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
        throw new Exception('Invalid request method');
    }

    $iddatadb = isset($_POST['iddatadb']) ? (int)$_POST['iddatadb'] : 0;
    $part_description = isset($_POST['part_description']) ? trim($_POST['part_description']) : '';

    if ($iddatadb <= 0) {
        throw new Exception('Missing iddatadb');
    }

    if ($part_description === '') {
        throw new Exception('Part description is empty');
    }

    // (opzionale ma consigliato) limita lunghezza come da DB varchar(255)
    if (mb_strlen($part_description) > 255) {
        $part_description = mb_substr($part_description, 0, 255);
    }

    $db = DBHandlerSelect::getInstance();
    $pdo = $db->getConnection();

    // Insert minimal
    $stmt = $pdo->prepare("
        INSERT INTO identification_parts (iddatadb, part_number, part_description)
        VALUES (?, 1, ?)
    ");
    $ok = $stmt->execute([$iddatadb, $part_description]);

    if (!$ok) {
        throw new Exception('Insert failed');
    }

    echo json_encode([
        'success' => true,
        'message' => 'Part added',
        'id' => $pdo->lastInsertId()
    ]);
} catch (Exception $e) {
    echo json_encode(['success' => false, 'message' => $e->getMessage()]);
}
exit;