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

/**
* Renders the `core/post-title` block on the server.
*
* @since 6.3.0 Omitting the $post argument from the `get_the_title`.
*
* @param array $attributes Block attributes.
* @param string $content Block default content.
* @param WP_Block $block Block instance.
*
* @return string Returns the filtered post title for the current post wrapped inside "h1" tags.
*/
function render_block_core_post_title( $attributes, $content, $block ) {
if ( ! isset( $block->context['postId'] ) ) {
return '';
}

/**
* The `$post` argument is intentionally omitted so that changes are reflected when previewing a post.
* See: https://github.com/WordPress/gutenberg/pull/37622#issuecomment-1000932816.
*/
$title = get_the_title();

if ( ! $title ) {
return '';
}

$tag_name = 'h2';
if ( isset( $attributes['level'] ) ) {
$tag_name = 0 === $attributes['level'] ? 'p' : 'h' . (int) $attributes['level'];
}

if ( isset( $attributes['isLink'] ) && $attributes['isLink'] ) {
$rel = ! empty( $attributes['rel'] ) ? 'rel="' . esc_attr( $attributes['rel'] ) . '"' : '';
$title = sprintf( '<a href="%1$s" target="%2$s" %3$s>%4$s</a>', esc_url( get_the_permalink( $block->context['postId'] ) ), esc_attr( $attributes['linkTarget'] ), $rel, $title );
}

$classes = array();
if ( isset( $attributes['textAlign'] ) ) {
$classes[] = 'has-text-align-' . $attributes['textAlign'];
}
if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {
$classes[] = 'has-link-color';
}
$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) );

return sprintf(
'<%1$s %2$s>%3$s</%1$s>',
$tag_name,
$wrapper_attributes,
$title
);
}

/**
* Registers the `core/post-title` block on the server.
*
* @since 5.8.0
*/
function register_block_core_post_title() {
register_block_type_from_metadata(
__DIR__ . '/post-title',
array(
'render_callback' => 'render_block_core_post_title',
)
);
}
add_action( 'init', 'register_block_core_post_title' );