SEO : add tombi mori plugin

site/plugins/kirby-seo/classes/Sitemap/SitemapUrl.php

@@ -0,0 +1,113 @@
+<?php
+
+namespace tobimori\Seo\Sitemap;
+
+use DOMDocument;
+use DOMNode;
+use Kirby\Exception\Exception;
+
+class SitemapUrl
+{
+	protected string $lastmod;
+	protected string $changefreq;
+	protected string $priority;
+	protected array $alternates = [];
+
+	public function __construct(protected string $loc)
+	{
+	}
+
+	public function loc(string $url = null): SitemapUrl|string
+	{
+		if ($url === null) {
+			return $this->loc;
+		}
+
+		$this->loc = $url;
+		return $this;
+	}
+
+	public function lastmod(string $lastmod = null): SitemapUrl|string
+	{
+		if ($lastmod === null) {
+			return $this->lastmod;
+		}
+
+		$this->lastmod = date('c', $lastmod);
+		return $this;
+	}
+
+	public function changefreq(string $changefreq = null): SitemapUrl|string
+	{
+		if ($changefreq === null) {
+			return $this->changefreq;
+		}
+
+		$this->changefreq = $changefreq;
+		return $this;
+	}
+
+	public function priority(string $priority = null): SitemapUrl|string
+	{
+		if ($priority === null) {
+			return $this->priority;
+		}
+
+		$this->priority = $priority;
+		return $this;
+	}
+
+	public function alternates(array $alternates = []): SitemapUrl|array
+	{
+		if (empty($alternates)) {
+			return $this->alternates;
+		}
+
+		foreach ($alternates as $alternate) {
+			foreach (['href', 'hreflang'] as $key) {
+				if (!array_key_exists($key, $alternate)) {
+					new Exception("[kirby-seo] The alternate link to '{$this->loc()} is missing the '{$key}' attribute");
+				}
+			}
+		}
+
+
+		$this->alternates = $alternates;
+		return $this;
+	}
+
+	public function toDOMNode(DOMDocument $doc = new DOMDocument('1.0', 'UTF-8')): DOMNode
+	{
+		$doc->formatOutput = true;
+
+		$node = $doc->createElement('url');
+
+		foreach (array_diff_key(get_object_vars($this), array_flip(['alternates'])) as $key => $value) {
+			$node->appendChild($doc->createElement($key, $value));
+		}
+
+		if (!empty($this->alternates())) {
+			foreach ($this->alternates() as $alternate) {
+				$alternateNode = $doc->createElement('xhtml:link');
+				foreach ($alternate as $key => $value) {
+					$alternateNode->setAttribute($key, $value);
+				}
+
+				$node->appendChild($alternateNode);
+			}
+		}
+
+		return $node;
+	}
+
+	public function toString(): string
+	{
+		$doc = new DOMDocument('1.0', 'UTF-8');
+		$doc->formatOutput = true;
+
+		$node = $this->toDOMNode();
+		$doc->appendChild($node);
+
+		return $doc->saveXML($node);
+	}
+}