<?php
require_once __DIR__ . '/../pixel/config.php';

// No-cache headers
header('Expires: ' . gmdate('D, d M Y H:i:s') . ' GMT');
header('Pragma: no-cache');

$fromlink     = $_GET['fromlink'] ?? '0';
$utm_source   = $_GET['utm_source'] ?? 'BWW2022';
$utm_medium   = $_GET['utm_medium'] ?? 'referral';
$utm_campaign = $_GET['utm_campaign'] ?? 'article';
$utm_content  = $_GET['utm_content'] ?? '';
$articlelink  = $_GET['articlelink'] ?? '';
$regid        = $_GET['regid'] ?? '0';
$userAgent    = $_SERVER['HTTP_USER_AGENT'] ?? '';

if ($fromlink === '') {
    $fromlink = '0';
}

if (
    stripos($userAgent, 'bot') === false
    && isset($_GET['articlelink'])
) {
    if (!is_numeric($regid)) {
        $regid = 0;
    }

    // Validation
    if (
        strpos((string)$regid, ',') !== false
        || strpos($articlelink, ',') !== false
        || !is_numeric($fromlink)
        || !is_numeric($regid)
        || strlen($articlelink) > 200
    ) {
        exit;
    }

    $db = getWriteDB();
    $stmt = $db->prepare(
        "INSERT INTO regionalstoryclick
         (datetime, regionid, articlelink, ipaddress, browser, fromlink, typer)
         VALUES (NOW(), :regid, :articlelink, :ip, :browser, :fromlink, 'Store')"
    );
    $stmt->execute([
        ':regid'       => (int)$regid,
        ':articlelink' => $articlelink,
        ':ip'          => getClientIp(),
        ':browser'     => substr($userAgent, 0, 250),
        ':fromlink'    => (int)$fromlink,
    ]);

    $linkme = $articlelink . '?utm_source=' . urlencode($utm_source)
            . '&utm_medium=' . urlencode($utm_medium)
            . '&utm_campaign=' . urlencode($utm_campaign)
            . '&utm_content=' . urlencode($utm_content);

    header('Location: ' . $linkme);
    exit;
}