<?php
require_once dirname(__DIR__, 2) . '/vendor/autoload.php';
require_once dirname(__FILE__) . '/class/VisualLimsApiClient.class.php';
require_once dirname(__FILE__) . '/include/headscript.php';

header('Content-Type: application/json');
ini_set('display_errors', '0');
error_reporting(E_ALL);

try {
    $schemaId = isset($_GET['schema_id']) && is_numeric($_GET['schema_id'])
        ? intval($_GET['schema_id'])
        : 0;

    if ($schemaId <= 0) {
        throw new Exception('Missing or invalid schema_id');
    }

    $api = VisualLimsApiClient::getInstance();

    $endpoint = "SchemaCustomField($schemaId)?\$expand=SchemiCustomFieldsDettagli(\$expand=CustomField)";
    $data = $api->get($endpoint);

    if (empty($data['SchemiCustomFieldsDettagli']) || !is_array($data['SchemiCustomFieldsDettagli'])) {
        throw new Exception('No SchemiCustomFieldsDettagli found');
    }

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

    $updated = 0;
    $notFound = [];

    $stmt = $pdo->prepare("
        UPDATE template_mapping
        SET field_order = ?
        WHERE schema_id = ?
          AND field_id = ?
    ");

    foreach ($data['SchemiCustomFieldsDettagli'] as $detail) {
        $order = intval($detail['Ordine'] ?? 9999);
        $fieldId = intval($detail['CustomField']['IdCustomField'] ?? 0);

        if ($fieldId <= 0) {
            continue;
        }

        $stmt->execute([
            $order,
            $schemaId,
            $fieldId
        ]);

        if ($stmt->rowCount() > 0) {
            $updated++;
        } else {
            $notFound[] = [
                'field_id' => $fieldId,
                'order' => $order,
                'label' => $detail['CustomField']['Titolo'] ?? ''
            ];
        }
    }

    echo json_encode([
        'success' => true,
        'schema_id' => $schemaId,
        'updated' => $updated,
        'not_found' => $notFound
    ]);
} catch (Exception $e) {
    http_response_code(500);

    echo json_encode([
        'success' => false,
        'message' => $e->getMessage()
    ]);
}