update

wp-content/plugins/xml-sitemap-generator-for-google/includes/ImageSitemap.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace GRIM_SG;
+
+class ImageSitemap extends MediaSitemap {
+	public static $template = 'image-sitemap';
+
+	private $image_mime_types = array(
+		'image/jpeg',
+		'image/png',
+		'image/bmp',
+		'image/gif',
+		'image/webp',
+		'image/avif',
+	);
+
+	/**
+	 * Adding Google News Sitemap Headers
+	 */
+	public function extraSitemapHeader() {
+		return array( 'xmlns:image' => 'http://www.google.com/schemas/sitemap-image/1.1' );
+	}
+
+	public function get_post_media( int $post_id, string $post_type ): array {
+		return apply_filters( 'sgg_image_sitemap_urls', array(), $post_id, $post_type );
+	}
+
+	public function add_urls( string $url, array $media ): void {
+		// Remove old URL if it exists
+		$this->urls = array_filter(
+			$this->urls,
+			function( $item ) use ( $url ) {
+				return $item[0] !== $url;
+			}
+		);
+
+		$this->urls[] = array(
+			$url, // URL
+			$media, // Images
+		);
+	}
+
+	public function filter_value( string $value ): bool {
+		$value    = strtok( $value, '?' );
+		$filetype = wp_check_filetype( $value );
+		$filtered = in_array( $filetype['type'], $this->image_mime_types, true );
+
+		return apply_filters( 'sgg_filter_image_url', $filtered, $value );
+	}
+}