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

if (session_status() !== PHP_SESSION_ACTIVE) session_start();

if (empty($_SESSION['access_granted_wk_leitung']) || $_SESSION['access_granted_wk_leitung'] !== true || empty($_SESSION['passcodewk_leitung_id']) || intval($_SESSION['passcodewk_leitung_id']) < 1 ) {
    http_response_code(403);
    exit;
}

if (!isset($baseDir)) {
    $baseDir = $_SERVER['DOCUMENT_ROOT'];
}

require $baseDir . '/../scripts/db/db-functions.php';
require $baseDir . '/../scripts/db/db-tables.php';
require $baseDir . '/../scripts/csrf_functions.php';


$type = 'wkl';

$dbconnection = require $baseDir . '/../scripts/db/db-verbindung-script.php';

if ($dbconnection['success'] !== true){
    echo 'Critical DB Error.';
    exit;
}

$id = intval($_POST['user_id'] ?? 0);
if ($id <= 0) {
    echo json_encode(['success' => false, 'message' => 'No valid ID']);
    exit;
}

// Delete old OTL links for this user (recommended)
db_delete($mysqli, $tableOTL, ['user_id' => $id]);

// Insert the row — url + timestamp are auto-generated by MySQL

$stmt = $mysqli->prepare("INSERT INTO {$tableOTL} (user_id) VALUES (?)");
$stmt->bind_param("i", $id);


if (!$stmt->execute()) {
    echo json_encode(['success' => false, 'message' => 'Failed to create OTL record']);
    exit;
}

$row_id = $stmt->insert_id;

$stmt->close();

// Now fetch the auto-generated URL
$url = db_get_var($mysqli, "SELECT url FROM $tableOTL WHERE id = ? LIMIT 1", [$row_id]);

if (!$url) {
    echo json_encode(['success' => false, 'message' => 'Could not fetch generated URL']);
    exit;
}

echo json_encode(['success' => true, 'url' => $url]);