101 lines
2.2 KiB
PHP
101 lines
2.2 KiB
PHP
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<?php
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namespace tobimori\Seo\Sitemap;
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use DOMDocument;
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use Kirby\Cms\App;
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use Kirby\Cms\Page;
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use Kirby\Toolkit\Collection;
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class SitemapIndex extends Collection
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{
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protected static $instance = null;
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public static function instance(...$args): static
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{
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if (static::$instance === null) {
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static::$instance = new static(...$args);
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}
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return static::$instance;
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}
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public function create(string $key = 'pages'): Sitemap
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{
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$sitemap = $this->make($key);
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$this->append($sitemap);
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return $sitemap;
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}
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public static function make(string $key = 'pages'): Sitemap
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{
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return new Sitemap($key);
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}
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public static function makeUrl(string $url): SitemapUrl
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{
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return new SitemapUrl($url);
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}
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public function toString(): string
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{
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$doc = new DOMDocument('1.0', 'UTF-8');
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$doc->formatOutput = true;
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$doc->appendChild($doc->createProcessingInstruction('xml-stylesheet', 'type="text/xsl" href="sitemap.xsl"'));
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$root = $doc->createElementNS('http://www.sitemaps.org/schemas/sitemap/0.9', 'sitemapindex');
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$root->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:xhtml', 'http://www.w3.org/1999/xhtml');
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$root->setAttribute('seo-version', App::plugin('tobimori/seo')->version());
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$doc->appendChild($root);
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foreach ($this as $sitemap) {
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$root->appendChild($sitemap->toDOMNode($doc));
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}
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return $doc->saveXML();
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}
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public function isValidIndex(string $key = null): bool
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{
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if ($key === null) {
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return $this->count() > 1;
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}
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return !!$this->findBy('key', $key) && $this->count() > 1;
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}
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public function generate(): void
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{
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$generator = option('tobimori.seo.sitemap.generator');
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if (is_callable($generator)) {
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$generator($this);
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}
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}
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public function render(Page $page): string|null
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{
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// There always has to be at least one index,
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// otherwise the sitemap will fail to render
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if ($this->count() === 0) {
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$this->generate();
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}
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if ($this->count() === 0) {
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$this->create();
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}
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if (($index = $page->content()->get('index'))->isEmpty()) {
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// If there is only one index, we do not need to render the index page
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return $this->count() > 1 ? $this->toString() : $this->first()->toString();
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}
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$sitemap = $this->findBy('key', $index->value());
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if ($sitemap) {
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return $sitemap->toString();
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}
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return null;
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}
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}
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