<?php
/**
 * app/modules/connections/swap.php
 *
 * Vertauscht Endpunkt A und Endpunkt B einer Verbindung.
 */

$connectionId = (int)($_GET['id'] ?? 0);

if ($connectionId <= 0) {
    $_SESSION['error'] = 'Ungueltige Verbindungs-ID';
    header('Location: ?module=connections&action=list');
    exit;
}

$connection = $sql->single(
    "SELECT id, port_a_type, port_a_id, port_b_type, port_b_id
     FROM connections
     WHERE id = ?",
    "i",
    [$connectionId]
);

if (!$connection) {
    $_SESSION['error'] = 'Verbindung nicht gefunden';
    header('Location: ?module=connections&action=list');
    exit;
}

$sql->set(
    "UPDATE connections
     SET port_a_type = ?, port_a_id = ?, port_b_type = ?, port_b_id = ?
     WHERE id = ?",
    "sisii",
    [
        (string)$connection['port_b_type'],
        (int)$connection['port_b_id'],
        (string)$connection['port_a_type'],
        (int)$connection['port_a_id'],
        $connectionId
    ]
);

$_SESSION['success'] = 'Endpunkte wurden vertauscht';
header('Location: ?module=connections&action=list');
exit;