<?php
/**
* Server-side rendering of the `core/media-text` block.
*
* @package WordPress
*/

/**
* Renders the `core/media-text` block on server.
*
* @since 6.6.0
*
* @param array $attributes The block attributes.
* @param string $content The block rendered content.
*
* @return string Returns the Media & Text block markup, if useFeaturedImage is true.
*/
function render_block_core_media_text( $attributes, $content ) {
if ( false === $attributes['useFeaturedImage'] ) {
return $content;
}

if ( in_the_loop() ) {
update_post_thumbnail_cache();
}

$current_featured_image = get_the_post_thumbnail_url();
if ( ! $current_featured_image ) {
return $content;
}

$has_media_on_right = isset( $attributes['mediaPosition'] ) && 'right' === $attributes['mediaPosition'];
$image_fill = isset( $attributes['imageFill'] ) && $attributes['imageFill'];
$focal_point = isset( $attributes['focalPoint'] ) ? round( $attributes['focalPoint']['x'] * 100 ) . '% ' . round( $attributes['focalPoint']['y'] * 100 ) . '%' : '50% 50%';
$unique_id = 'wp-block-media-text__media-' . wp_unique_id();

$block_tag_processor = new WP_HTML_Tag_Processor( $content );
$block_query = array(
'tag_name' => 'div',
'class_name' => 'wp-block-media-text',
);

while ( $block_tag_processor->next_tag( $block_query ) ) {
if ( $image_fill ) {
// The markup below does not work with the deprecated `is-image-fill` class.
$block_tag_processor->remove_class( 'is-image-fill' );
$block_tag_processor->add_class( 'is-image-fill-element' );
}
}

$content = $block_tag_processor->get_updated_html();

$media_tag_processor = new WP_HTML_Tag_Processor( $content );
$wrapping_figure_query = array(
'tag_name' => 'figure',
'class_name' => 'wp-block-media-text__media',
);

if ( $has_media_on_right ) {
// Loop through all the figure tags and set a bookmark on the last figure tag.
while ( $media_tag_processor->next_tag( $wrapping_figure_query ) ) {
$media_tag_processor->set_bookmark( 'last_figure' );
}
if ( $media_tag_processor->has_bookmark( 'last_figure' ) ) {
$media_tag_processor->seek( 'last_figure' );
// Insert a unique ID to identify the figure tag.
$media_tag_processor->set_attribute( 'id', $unique_id );
}
} else {
if ( $media_tag_processor->next_tag( $wrapping_figure_query ) ) {
// Insert a unique ID to identify the figure tag.
$media_tag_processor->set_attribute( 'id', $unique_id );
}
}

$content = $media_tag_processor->get_updated_html();

// Add the image tag inside the figure tag, and update the image attributes
// in order to display the featured image.
$media_size_slug = isset( $attributes['mediaSizeSlug'] ) ? $attributes['mediaSizeSlug'] : 'full';
$image_tag = '<img class="wp-block-media-text__featured_image">';
$content = preg_replace(
'/(<figure\s+id="' . preg_quote( $unique_id, '/' ) . '"\s+class="wp-block-media-text__media"\s*>)/',
'$1' . $image_tag,
$content
);

$image_tag_processor = new WP_HTML_Tag_Processor( $content );
if ( $image_tag_processor->next_tag(
array(
'tag_name' => 'figure',
'id' => $unique_id,
)
) ) {
// The ID is only used to ensure that the correct figure tag is selected,
// and can now be removed.
$image_tag_processor->remove_attribute( 'id' );
if ( $image_tag_processor->next_tag(
array(
'tag_name' => 'img',
'class_name' => 'wp-block-media-text__featured_image',
)
) ) {
$image_tag_processor->set_attribute( 'src', esc_url( $current_featured_image ) );
$image_tag_processor->set_attribute( 'class', 'wp-image-' . get_post_thumbnail_id() . ' size-' . $media_size_slug );
$image_tag_processor->set_attribute( 'alt', trim( strip_tags( get_post_meta( get_post_thumbnail_id(), '_wp_attachment_image_alt', true ) ) ) );
if ( $image_fill ) {
$image_tag_processor->set_attribute( 'style', 'object-position:' . $focal_point . ';' );
}

$content = $image_tag_processor->get_updated_html();
}
}

return $content;
}

/**
* Registers the `core/media-text` block renderer on server.
*
* @since 6.6.0
*/
function register_block_core_media_text() {
register_block_type_from_metadata(
__DIR__ . '/media-text',
array(
'render_callback' => 'render_block_core_media_text',
)
);
}
add_action( 'init', 'register_block_core_media_text' );