<?php
define('NOTOKENRENEWAL', 1);
require '../../../main.inc.php';
require_once __DIR__.'/../class/DocumentTypeHelper.class.php';

$facture_id = GETPOST('facture_id', 'int');
$title = GETPOST('title', 'alpha');
$docType = GETPOST('document_type', 'alpha'); // NEU!

if (!$facture_id || !$title || !$docType) {
    echo json_encode(['success' => false, 'error' => 'Missing parameters']);
    exit;
}

// Hole die richtigen Tabellennamen für diesen Dokumenttyp
$tables = DocumentTypeHelper::getTableNames($docType);
if (!$tables) {
    echo json_encode(['success' => false, 'error' => 'Invalid document type']);
    exit;
}

// Hole nächste line_order
$sql = "SELECT MAX(line_order) as max_order";
$sql .= " FROM ".MAIN_DB_PREFIX."facture_lines_manager";
$sql .= " WHERE ".$tables['fk_parent']." = ".(int)$facture_id;
$sql .= " AND document_type = '".$db->escape($docType)."'";
$resql = $db->query($sql);
$obj = $db->fetch_object($resql);
$next_order = ($obj && $obj->max_order ? $obj->max_order + 1 : 1);

// Erstelle Section - setze alle FK-Felder explizit (NULL für nicht genutzte)
$fk_facture = ($docType === 'invoice') ? (int)$facture_id : 'NULL';
$fk_propal = ($docType === 'propal') ? (int)$facture_id : 'NULL';
$fk_commande = ($docType === 'order') ? (int)$facture_id : 'NULL';

$sql = "INSERT INTO ".MAIN_DB_PREFIX."facture_lines_manager";
$sql .= " (fk_facture, fk_propal, fk_commande, document_type, line_type, title, line_order, date_creation)";
$sql .= " VALUES (".$fk_facture.", ".$fk_propal.", ".$fk_commande.", '".$db->escape($docType)."', 'section', '".$db->escape($title)."', ".$next_order.", NOW())";

if ($db->query($sql)) {
    $section_id = $db->last_insert_id(MAIN_DB_PREFIX."facture_lines_manager");

    // KEIN automatisches Subtotal mehr - wird nur erstellt wenn Checkbox aktiviert wird
    // Das Subtotal wird über toggle_subtotal.php erstellt/gelöscht

    echo json_encode(['success' => true, 'section_id' => $section_id]);
} else {
    echo json_encode(['success' => false, 'error' => $db->lasterror()]);
}