<?php

/**
* Sets a custom slug when creating auto-draft template parts.
*
* This is only needed for auto-drafts created by the regular WP editor.
* If this page is to be removed, this will not be necessary.
*
* @since 5.9.0
*
* @param int $post_id Post ID.
*/
function wp_set_unique_slug_on_create_template_part( $post_id ) {
$post = get_post( $post_id );
if ( 'auto-draft' !== $post->post_status ) {
return;
}

if ( ! $post->post_name ) {
wp_update_post(
array(
'ID' => $post_id,
'post_name' => 'custom_slug_' . uniqid(),
)
);
}

$terms = get_the_terms( $post_id, 'wp_theme' );
if ( ! is_array( $terms ) || ! count( $terms ) ) {
wp_set_post_terms( $post_id, get_stylesheet(), 'wp_theme' );
}
}

/**
* Generates a unique slug for templates.
*
* @access private
* @since 5.8.0
*
* @param string $override_slug The filtered value of the slug (starts as `null` from apply_filter).
* @param string $slug The original/un-filtered slug (post_name).
* @param int $post_id Post ID.
* @param string $post_status No uniqueness checks are made if the post is still draft or pending.
* @param string $post_type Post type.
* @return string The original, desired slug.
*/
function wp_filter_wp_template_unique_post_slug( $override_slug, $slug, $post_id, $post_status, $post_type ) {
if ( 'wp_template' !== $post_type && 'wp_template_part' !== $post_type ) {
return $override_slug;
}

if ( ! $override_slug ) {
$override_slug = $slug;
}

/*
* Template slugs must be unique within the same theme.
* TODO - Figure out how to update this to work for a multi-theme environment.
* Unfortunately using `get_the_terms()` for the 'wp-theme' term does not work
* in the case of new entities since is too early in the process to have been saved
* to the entity. So for now we use the currently activated theme for creation.
*/
$theme = get_stylesheet();
$terms = get_the_terms( $post_id, 'wp_theme' );
if ( $terms && ! is_wp_error( $terms ) ) {
$theme = $terms[0]->name;
}

$check_query_args = array(
'post_name__in' => array( $override_slug ),
'post_type' => $post_type,
'posts_per_page' => 1,
'no_found_rows' => true,
'post__not_in' => array( $post_id ),
'tax_query' => array(
array(
'taxonomy' => 'wp_theme',
'field' => 'name',
'terms' => $theme,
),
),
);
$check_query = new WP_Query( $check_query_args );
$posts = $check_query->posts;

if ( count( $posts ) > 0 ) {
$suffix = 2;
do {
$query_args = $check_query_args;
$alt_post_name = _truncate_post_slug( $override_slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
$query_args['post_name__in'] = array( $alt_post_name );
$query = new WP_Query( $query_args );
++$suffix;
} while ( count( $query->posts ) > 0 );
$override_slug = $alt_post_name;
}

return $override_slug;
}

/**
* Enqueues the skip-link script & styles.
*
* @access private
* @since 6.4.0
*
* @global string $_wp_current_template_content
*/
function wp_enqueue_block_template_skip_link() {
global $_wp_current_template_content;

// Back-compat for plugins that disable functionality by unhooking this action.
if ( ! has_action( 'wp_footer', 'the_block_template_skip_link' ) ) {
return;
}
remove_action( 'wp_footer', 'the_block_template_skip_link' );

// Early exit if not a block theme.
if ( ! current_theme_supports( 'block-templates' ) ) {
return;
}

// Early exit if not a block template.
if ( ! $_wp_current_template_content ) {
return;
}

$skip_link_styles = '
.skip-link.screen-reader-text {
border: 0;
clip-path: inset(50%);
height: 1px;
margin: -1px;
overflow: hidden;
padding: 0;
position: absolute !important;
width: 1px;
word-wrap: normal !important;
}

.skip-link.screen-reader-text:focus {
background-color: #eee;
clip-path: none;
color: #444;
display: block;
font-size: 1em;
height: auto;
left: 5px;
line-height: normal;
padding: 15px 23px 14px;
text-decoration: none;
top: 5px;
width: auto;
z-index: 100000;
}';

$handle = 'wp-block-template-skip-link';

/**
* Print the skip-link styles.
*/
wp_register_style( $handle, false );
wp_add_inline_style( $handle, $skip_link_styles );
wp_enqueue_style( $handle );

/**
* Enqueue the skip-link script.
*/
ob_start();
?>
<script>
( function() {
var skipLinkTarget = document.querySelector( 'main' ),
sibling,
skipLinkTargetID,
skipLink;

// Early exit if a skip-link target can't be located.
if ( ! skipLinkTarget ) {
return;
}

/*
* Get the site wrapper.
* The skip-link will be injected in the beginning of it.
*/
sibling = document.querySelector( '.wp-site-blocks' );

// Early exit if the root element was not found.
if ( ! sibling ) {
return;
}

// Get the skip-link target's ID, and generate one if it doesn't exist.
skipLinkTargetID = skipLinkTarget.id;
if ( ! skipLinkTargetID ) {
skipLinkTargetID = 'wp--skip-link--target';
skipLinkTarget.id = skipLinkTargetID;
}

// Create the skip link.
skipLink = document.createElement( 'a' );
skipLink.classList.add( 'skip-link', 'screen-reader-text' );
skipLink.id = 'wp-skip-link';
skipLink.href = '#' + skipLinkTargetID;
skipLink.innerText = '<?php /* translators: Hidden accessibility text. Do not use HTML entities (&nbsp;, etc.). */ esc_html_e( 'Skip to content' ); ?>';

// Inject the skip link.
sibling.parentElement.insertBefore( skipLink, sibling );
}() );
</script>
<?php
$skip_link_script = wp_remove_surrounding_empty_script_tags( ob_get_clean() );
$script_handle = 'wp-block-template-skip-link';
wp_register_script( $script_handle, false, array(), false, array( 'in_footer' => true ) );
wp_add_inline_script( $script_handle, $skip_link_script );
wp_enqueue_script( $script_handle );
}

/**
* Enables the block templates (editor mode) for themes with theme.json by default.
*
* @access private
* @since 5.8.0
*/
function wp_enable_block_templates() {
if ( wp_is_block_theme() || wp_theme_has_theme_json() ) {
add_theme_support( 'block-templates' );
}
}