jobifygarden/app/Services/SitemapService.php

<?php

namespace App\Services;

use App\Models\Job;
use App\Models\JobCategory;
use Illuminate\Support\Facades\URL;

class SitemapService
{
    /**
     * Generate XML sitemap
     */
    public function generateSitemap(): string
    {
        $xml = new \SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"></urlset>');

        // Add homepage
        $this->addUrl($xml, route('home'), now(), 'daily', '1.0');

        // Add jobs index
        $this->addUrl($xml, route('jobs.index'), now(), 'daily', '0.9');

        // Add remote jobs
        $this->addUrl($xml, route('jobs.remote'), now(), 'daily', '0.9');

        // Add categories
        $categories = JobCategory::all();
        foreach ($categories as $category) {
            $this->addUrl(
                $xml,
                route('jobs.category', $category->slug),
                $category->updated_at,
                'daily',
                '0.8'
            );
        }

        // Add active jobs
        $jobs = Job::where(function ($query) {
                $query->whereNull('expires_at')
                    ->orWhere('expires_at', '>', now());
            })
            ->orderBy('posted_at', 'desc')
            ->limit(10000) // Limit to 10k most recent jobs
            ->get(['id', 'posted_at', 'updated_at']);

        foreach ($jobs as $job) {
            $this->addUrl(
                $xml,
                route('jobs.show', $job->id),
                $job->updated_at ?? $job->posted_at,
                'weekly',
                '0.7'
            );
        }

        return $xml->asXML();
    }

    /**
     * Add URL to sitemap
     */
    private function addUrl(
        \SimpleXMLElement $xml,
        string $url,
        ?\DateTimeInterface $lastmod = null,
        string $changefreq = 'weekly',
        string $priority = '0.5'
    ): void {
        $urlElement = $xml->addChild('url');
        $urlElement->addChild('loc', htmlspecialchars($url));

        if ($lastmod) {
            $urlElement->addChild('lastmod', $lastmod->format('Y-m-d'));
        }

        $urlElement->addChild('changefreq', $changefreq);
        $urlElement->addChild('priority', $priority);
    }

    /**
     * Generate sitemap index for large sites
     */
    public function generateSitemapIndex(): string
    {
        $xml = new \SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"></sitemapindex>');

        // Add main sitemap
        $this->addSitemapToIndex($xml, route('sitemap.main'), now());

        // Add jobs sitemap
        $this->addSitemapToIndex($xml, route('sitemap.jobs'), now());

        return $xml->asXML();
    }

    /**
     * Add sitemap to index
     */
    private function addSitemapToIndex(\SimpleXMLElement $xml, string $url, \DateTimeInterface $lastmod): void
    {
        $sitemapElement = $xml->addChild('sitemap');
        $sitemapElement->addChild('loc', htmlspecialchars($url));
        $sitemapElement->addChild('lastmod', $lastmod->format('Y-m-d'));
    }

    /**
     * Generate main sitemap (static pages and categories)
     */
    public function generateMainSitemap(): string
    {
        $xml = new \SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"></urlset>');

        // Add homepage
        $this->addUrl($xml, route('home'), now(), 'daily', '1.0');

        // Add jobs index
        $this->addUrl($xml, route('jobs.index'), now(), 'daily', '0.9');

        // Add remote jobs
        $this->addUrl($xml, route('jobs.remote'), now(), 'daily', '0.9');

        // Add categories
        $categories = JobCategory::all();
        foreach ($categories as $category) {
            $this->addUrl(
                $xml,
                route('jobs.category', $category->slug),
                $category->updated_at,
                'daily',
                '0.8'
            );
        }

        return $xml->asXML();
    }

    /**
     * Generate jobs sitemap
     */
    public function generateJobsSitemap(): string
    {
        $xml = new \SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"></urlset>');

        // Add active jobs
        $jobs = Job::where(function ($query) {
                $query->whereNull('expires_at')
                    ->orWhere('expires_at', '>', now());
            })
            ->orderBy('posted_at', 'desc')
            ->limit(50000) // Sitemap limit
            ->get(['id', 'posted_at', 'updated_at']);

        foreach ($jobs as $job) {
            $this->addUrl(
                $xml,
                route('jobs.show', $job->id),
                $job->updated_at ?? $job->posted_at,
                'weekly',
                '0.7'
            );
        }

        return $xml->asXML();
    }
}