<?php
/**
 * Frontend.
 *
 * @package AdvancedAds\StickyAds
 * @author  Advanced Ads <info@wpadvancedads.com>
 * @since   1.9.0
 */

namespace AdvancedAds\StickyAds;

use AdvancedAds\Abstracts\Ad;
use AdvancedAds\Utilities\Conditional;
use AdvancedAds\Framework\Interfaces\Integration_Interface;

defined( 'ABSPATH' ) || exit;

/**
 * Frontend.
 */
class Frontend implements Integration_Interface {

	/**
	 * Collect the ids of placements.
	 *
	 * @var array
	 */
	private $placements_ids = null;

	/**
	 * Hook into WordPress.
	 *
	 * @return void
	 */
	public function hooks(): void {
		add_action( 'wp_footer', [ $this, 'footer_injection' ], 10 );
		add_action( 'wp_enqueue_scripts', [ $this, 'enqueue_scripts' ] );
	}

	/**
	 * Append js file in footer
	 *
	 * @return void
	 */
	public function enqueue_scripts(): void {
		if ( Conditional::is_amp() ) {
			return;
		}

		$options = wp_advads_get_sticky_options();

		wp_enqueue_script( 'advanced-ads-sticky-footer-js', AA_STICKY_ADS_BASE_URL . 'assets/dist/sticky.js', [], AA_STICKY_ADS_VERSION, true );
		wp_localize_script(
			'advanced-ads-sticky-footer-js',
			'advanced_ads_sticky_settings',
			[
				'check_position_fixed' => $options['check-position-fixed'],
				'sticky_class'         => wp_advads_get_sticky_class(),
				'placements'           => $this->get_sticky_placements_ids(),
			]
		);
	}

	/**
	 * Injects the ads into the footer.
	 *
	 * @since 1.2.3
	 *
	 * @return void
	 */
	public function footer_injection(): void {
		foreach ( $this->get_sticky_placements_ids() as $placement_id ) {
			the_ad_placement( $placement_id );
		}
	}

	/**
	 * Retrieves an array of sticky placements.
	 *
	 * @return array The array of sticky placements.
	 */
	private function get_sticky_placements_ids(): array {
		if ( null === $this->placements_ids ) {
			$sticky_placements = [
				'sticky_left_sidebar',
				'sticky_right_sidebar',
				'sticky_header',
				'sticky_footer',
				'sticky_left_window',
				'sticky_right_window',
			];

			$this->placements_ids = [];
			$this->placements_ids = wp_advads_get_placements_by_types( $sticky_placements, 'ids' );
		}

		return $this->placements_ids;
	}
}