<?php
/**
 * Sitemap Generator Script
 * 
 * Reads keywords from list.txt and generates a sitemap.xml file
 * with URLs in the format domain.com/ncvet5/js/keyword/
 */

// Base configuration
$base_url = (empty($_SERVER['HTTPS']) ? 'http' : 'https') . "://{$_SERVER['HTTP_HOST']}/ncvet5/js/";
$file_path = "list.txt"; // Path to the keywords list file
$output_file = "29a.xml"; // Output file name

// Check if the keyword file exists
if (!file_exists($file_path)) {
    die("Error: Keyword file not found at $file_path");
}

// Read keywords from file
$keywords = file($file_path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);

// Start XML output
$xml = '<?xml version="1.0" encoding="UTF-8"?>' . PHP_EOL;
$xml .= '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">' . PHP_EOL;

// Current date for lastmod
$current_date = date('Y-m-d');

// Add entries for each keyword
foreach ($keywords as $keyword) {
    $keyword = trim($keyword);
    if (empty($keyword)) continue;
    
    $url = $base_url . $keyword . '/';
    $xml .= '  <url>' . PHP_EOL;
    $xml .= '    <loc>' . htmlspecialchars($url) . '</loc>' . PHP_EOL;
    $xml .= '    <lastmod>' . $current_date . '</lastmod>' . PHP_EOL;
    $xml .= '    <changefreq>daily</changefreq>' . PHP_EOL;
    $xml .= '    <priority>1.0</priority>' . PHP_EOL;
    $xml .= '  </url>' . PHP_EOL;
}

// Close XML
$xml .= '</urlset>';

// Save to file
if (file_put_contents($output_file, $xml)) {
    echo "Sitemap successfully generated at $output_file" . PHP_EOL;
    echo "Contains " . count($keywords) . " URLs" . PHP_EOL;
} else {
    echo "Error: Could not write sitemap to $output_file" . PHP_EOL;
}