<?php

function gtm_do_template( $slug, $theme = null, $template_type = 'wp_template' ) {
	// Reference: https://github.com/WordPress/gutenberg/blob/d0fa111d992660d05cc7ced418de1a7ca7c693ff/packages/block-library/src/template-part/index.php

	if ( ! $theme ) {
		$theme = get_template();
	}

	static $seen_ids = [];

	$content          = null;
	$template_part_id = null;
	$template         = get_block_template( sprintf( '%s//%s', $theme, $slug ), $template_type );

	if ( $template ) {
		$content          = $template->content;
		$template_part_id = $template->id;
	}

	if ( isset( $seen_ids[$template_part_id] ) ) { // Prevent infinite nested block
		return $is_debug ?
		// translators: Visible only in the front end, this warning takes the place of a faulty block.
		esc_html__( '[block rendering halted]', 'gutenmate' ) :
		'';
	}

	// Run through the actions that are typically taken on the_content.
	$seen_ids[$template_part_id] = true;
	$content                     = do_blocks( $content );
	unset( $seen_ids[$template_part_id] );
	$content = wptexturize( $content );
	$content = convert_smilies( $content );
	$content = shortcode_unautop( $content );
	$content = wp_filter_content_tags( $content );
	$content = do_shortcode( $content );

	// Handle embeds for block template parts.
	global $wp_embed;
	$content = $wp_embed->autoembed( $content );

	return $content;
}

function gtm_do_template_part( $slug, $theme = null ) {
	return gtm_do_template( $slug, $theme, 'wp_template_part' );
}