<?php
/**
 * Admin assets – settings page (color picker, admin.css).
 *
 * @package AHA_Hero_Slider
 * @since   1.0.0
 */

if ( ! defined( 'WPINC' ) ) {
	die;
}

/**
 * Class AHA_Hero_Slider_Admin_Assets
 */
class AHA_Hero_Slider_Admin_Assets {

	/** @var AHA_Hero_Slider_Admin_Assets|null */
	private static $instance = null;

	/** @return AHA_Hero_Slider_Admin_Assets */
	public static function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	public function __construct() {
		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_cpt_styles' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_settings_scripts' ) );
	}

	/**
	 * Enqueue scripts and styles on the plugin settings screen only.
	 *
	 * @param string $hook Current admin page hook.
	 * @return void
	 */
	public function enqueue( $hook ) {
		if ( 'toplevel_page_' . AHA_HERO_SLIDER_ADMIN_SLUG !== $hook ) {
			return;
		}

		wp_enqueue_style( 'wp-color-picker' );

		wp_enqueue_style(
			'aha-hero-slider-admin',
			AHA_HERO_SLIDER_URL . 'assets/css/admin.css',
			array( 'wp-color-picker' ),
			AHA_HERO_SLIDER_VERSION
		);

		wp_enqueue_script( 'wp-color-picker' );

		wp_add_inline_script(
			'wp-color-picker',
			'jQuery(function($){ $(".aha-hero-settings-color").wpColorPicker(); });'
		);
	}

	/**
	 * Enqueue CPT column styles.
	 *
	 * @return void
	 */
	public function enqueue_cpt_styles() {
		$screen = get_current_screen();
		if ( ! $screen || $screen->post_type !== AHA_HERO_SLIDER_CPT ) {
			return;
		}
		wp_register_style( 'aha-hero-slider-cpt-columns', false, array(), AHA_HERO_SLIDER_VERSION );
		wp_enqueue_style( 'aha-hero-slider-cpt-columns' );
		wp_add_inline_style( 'aha-hero-slider-cpt-columns', '.column-aha_hero_thumb{width:96px;}' );
	}

	/**
	 * Enqueue settings page scripts.
	 *
	 * @param string $hook Current admin page hook.
	 * @return void
	 */
	public function enqueue_settings_scripts( $hook ) {
		if ( 'toplevel_page_' . AHA_HERO_SLIDER_ADMIN_SLUG !== $hook ) {
			return;
		}
		wp_register_script( 'aha-hero-slider-settings', false, array(), AHA_HERO_SLIDER_VERSION, true );
		wp_enqueue_script( 'aha-hero-slider-settings' );
		$inline_script  = "(function(){";
		$inline_script .= "var chk=document.getElementById('aha_hs_overlay_enabled');var box=document.getElementById('aha_hs_overlay_options');";
		$inline_script .= "if(chk&&box){chk.addEventListener('change',function(){box.classList.toggle('aha-hero-overlay-options--hidden',!this.checked);});}";
		$inline_script .= "document.querySelectorAll('.aha-hero-slider-shortcode-input').forEach(function(el){el.addEventListener('click',function(){this.select();});});";
		$inline_script .= "})();";
		wp_add_inline_script( 'aha-hero-slider-settings', $inline_script );
	}
}