<?php
/**
 * app/modules/buildings/save.php
 */

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    header('Location: ?module=buildings&action=list');
    exit;
}

$buildingId = (int)($_POST['id'] ?? 0);
$name = trim($_POST['name'] ?? '');
$locationId = (int)($_POST['location_id'] ?? 0);
$comment = trim($_POST['comment'] ?? '');

$errors = [];

if (empty($name)) {
    $errors[] = "Name ist erforderlich";
}

if ($locationId <= 0) {
    $errors[] = "Standort ist erforderlich";
}

if (!empty($errors)) {
    $_SESSION['error'] = implode(', ', $errors);
    $redirectUrl = $buildingId ? "?module=buildings&action=edit&id=$buildingId" : "?module=buildings&action=edit";
    header("Location: $redirectUrl");
    exit;
}

if ($buildingId > 0) {
    $sql->set(
        "UPDATE buildings SET name = ?, location_id = ?, comment = ? WHERE id = ?",
        "sisi",
        [$name, $locationId, $comment, $buildingId]
    );
} else {
    $sql->set(
        "INSERT INTO buildings (name, location_id, comment) VALUES (?, ?, ?)",
        "sis",
        [$name, $locationId, $comment]
    );
}

$_SESSION['success'] = "Gebäude gespeichert";
header('Location: ?module=buildings&action=list');
exit;