<?php
/**
 * Handle scripts enqueuing and inlining.
 *
 * @package xpertcodes/avada-press-block
 *
 * @since 1.0
 */

namespace AvadaBlock;

/**
 * Scripts handler.
 */
class Scripts {

	/**
	 * Constructor.
	 *
	 * @access public
	 * @since 1.0
	 */
	public function __construct() {
		add_action( 'wp_footer', [ $this, 'avadablock_enqueue_footer_scripts' ] );
		add_action( 'wp_enqueue_scripts', [ $this, 'avadablock_defer_non_critical_scripts' ] );
	}

	/**
	 * Enqueue footer scripts.
	 *
	 * @access public
	 * @since 1.0
	 * @return void
	 */
	public function avadablock_enqueue_footer_scripts() {
		/**
		 * Action hook before footer scripts are output.
		 *
		 * @since 1.0
		 */
		do_action( 'avadablock_before_footer_scripts' );

		// Enqueue prefetch script.
		wp_enqueue_script(
			'avadablock-prefetch',
			get_theme_file_uri( 'scripts/prefetch-on-hover.js' ),
			[],
			wp_get_theme()->get( 'Version' ),
			true
		);
	}

	/**
	 * Defer non-critical scripts for performance.
	 *
	 * @access public
	 * @since 1.0
	 * @return void
	 */
	public function avadablock_defer_non_critical_scripts() {
		/**
		 * Filter scripts to defer.
		 *
		 * @since 1.0
		 * @param array $scripts Array of script handles to defer.
		 */
		$scripts_to_defer = apply_filters( 'avadablock_defer_scripts', [ 'avadablock-prefetch' ] );

		foreach ( $scripts_to_defer as $script_handle ) {
			add_filter(
				'script_loader_tag',
				function( $tag, $handle ) use ( $script_handle ) {
					if ( $script_handle === $handle ) {
						return str_replace( ' src', ' defer src', $tag );
					}
					return $tag;
				},
				10,
				2
			);
		}
	}
}