<?php
/**
 * Supported Images in Sitemap (SEO).
 *
 * @package visual-portfolio/sitemap
 */

/**
 * Visual_Portfolio_Sitemap class
 */
class Visual_Portfolio_Sitemap {
	/**
	 * Visual_Portfolio_Sitemap constructor.
	 */
	public function __construct() {
		add_filter( 'aioseo_sitemap_posts', array( $this, 'add_images_to_aioseo_sitemap' ), 10, 1 );
		add_filter( 'rank_math/sitemap/urlimages', array( $this, 'add_images_to_sitemap' ), 10, 2 );
		add_filter( 'wpseo_sitemap_urlimages', array( $this, 'add_images_to_sitemap' ), 10, 2 );
	}

	/**
	 * Add sitemap entries for All In One SEO.
	 *
	 * @param array $entries - Sitemap entries.
	 *
	 * @return array
	 */
	public function add_images_to_aioseo_sitemap( $entries ) {
		if ( is_array( $entries ) ) {
			foreach ( $entries as &$entry ) {
				$post_permalink = $entry['loc'];
				$post_id        = url_to_postid( $post_permalink );
				$images         = isset( $entry['images'] ) ? $entry['images'] : array();

				if ( 0 === $post_id ) {
					$archive_page = Visual_Portfolio_Settings::get_option( 'portfolio_archive_page', 'vp_general' );

					if ( get_permalink( $archive_page ) === $post_permalink ) {
						$post_id = $archive_page;
					}
				}

				$block_images = $this->parse_images_from_blocks( $post_id );

				if ( ! empty( $block_images ) ) {
					foreach ( $block_images as $image ) {
						$images[] = (object) array(
							'image:loc'     => $image['src'],
							'image:caption' => $image['alt'],
							'image:title'   => $image['title'],
						);
					}
				}

				$entry['images'] = $images;
			}
		}

		return $entries;
	}

	/**
	 * Add sitemap images for Rank Math and Yoast SEO.
	 *
	 * @param array $images - Sitemap Images for current Post.
	 * @param int   $post_id - Post ID.
	 * @return array
	 */
	public function add_images_to_sitemap( $images, $post_id ) {
		$block_images = $this->parse_images_from_blocks( $post_id );
		if ( ! empty( $block_images ) ) {
			$images = array_merge( $images, $block_images );
		}

		return $images;
	}

	/**
	 * Parse block images.
	 *
	 * @param  int $post_id - Post ID.
	 * @return array
	 */
	private function parse_images_from_blocks( $post_id ) {
		$block_images = array();
		if ( $post_id > 0 ) {
			$post         = get_post( $post_id );
			$content_post = $post->post_content;
			$parse_blocks = parse_blocks( $content_post );

			if ( ! empty( $parse_blocks ) && is_array( $parse_blocks ) ) {
				foreach ( $parse_blocks as $block ) {
					if (
						'visual-portfolio/block' === $block['blockName'] ||
						'visual-portfolio/saved' === $block['blockName'] ||
						'nk/visual-portfolio' === $block['blockName']
					) {
						$options = Visual_Portfolio_Get::get_options( $block['attrs'] );
						switch ( $options['content_source'] ) {
							case 'post-based':
								if ( isset( $options['posts_source'] ) ) {
									$query_opts = Visual_Portfolio_Get::get_query_params( $options, false, $options['id'] );

									$portfolio_query = new WP_Query( $query_opts );

									if ( isset( $portfolio_query ) ) {
										while ( $portfolio_query->have_posts() ) {
											$portfolio_query->the_post();

											$image_id = apply_filters( 'vpf_parse_sitemap_image_id_from_blocks', 'attachment' === get_post_type() ? get_the_ID() : get_post_thumbnail_id( get_the_ID() ), get_the_ID() );

											$image_alt = get_post_meta( $image_id, '_wp_attachment_image_alt', true );

											$block_images[] = array(
												'src'   => wp_get_attachment_image_url( $image_id, 'full' ),
												'alt'   => $image_alt,
												'title' => get_the_title( $image_id ),
											);
										}
										$portfolio_query->reset_postdata();

										// Sometimes, when we use WPBakery Page Builder, without this reset output is wrong.
										wp_reset_postdata();
									}
								}
								break;
							case 'images':
								if ( isset( $options['images'] ) ) {
									foreach ( $options['images'] as $image ) {
										$image_id = $image['id'];

										$image_alt = $image['description'] ?? get_post_meta( $image_id, '_wp_attachment_image_alt', true ) ?? '';

										$image_title = $image['title'] ?? get_the_title( $image_id );

										$image_url = $image['imgUrl'] ?? wp_get_attachment_image_url( $image_id, 'full' );

										$block_images[] = array(
											'src'   => $image_url,
											'alt'   => $image_alt,
											'title' => $image_title,
										);
									}
								}
								break;
						}
					}
				}
			}
		}

		return apply_filters( 'vpf_parse_sitemap_images_from_blocks', $block_images, $post_id );
	}
}
new Visual_Portfolio_Sitemap();