<?php
/**
 * Taxonomy: Slide groups (admin / content model).
 *
 * @package AHA_Hero_Slider
 * @since   1.0.0
 */

if ( ! defined( 'WPINC' ) ) {
	die;
}

/**
 * Registers taxonomy attached to hero slides CPT.
 */
class AHA_Hero_Slider_Taxonomy {

	/**
	 * Instance.
	 *
	 * @var self|null
	 */
	private static $instance = null;

	/**
	 * Get instance.
	 *
	 * @return self
	 */
	public static function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Constructor.
	 */
	public function __construct() {
		// After CPT (priority 10) so the post type exists.
		add_action( 'init', array( $this, 'register_taxonomy' ), 11 );
	}

	/**
	 * Register slide groups taxonomy.
	 */
	public function register_taxonomy() {
		if ( ! aha_hero_slider_is_cpt_enabled() || ! post_type_exists( AHA_HERO_SLIDER_CPT ) ) {
			return;
		}

		$labels = array(
			'name'              => _x( 'Slide groups', 'taxonomy general name', 'aha-hero-slider' ),
			'singular_name'     => _x( 'Slide group', 'taxonomy singular name', 'aha-hero-slider' ),
			'search_items'      => __( 'Search groups', 'aha-hero-slider' ),
			'all_items'         => __( 'All groups', 'aha-hero-slider' ),
			'parent_item'       => __( 'Parent group', 'aha-hero-slider' ),
			'parent_item_colon' => __( 'Parent group:', 'aha-hero-slider' ),
			'edit_item'         => __( 'Edit group', 'aha-hero-slider' ),
			'update_item'       => __( 'Update group', 'aha-hero-slider' ),
			'add_new_item'      => __( 'Add new group', 'aha-hero-slider' ),
			'new_item_name'     => __( 'New group name', 'aha-hero-slider' ),
			'menu_name'         => __( 'Slide groups', 'aha-hero-slider' ),
		);

		$args = array(
			'labels'             => $labels,
			'public'             => false,
			'hierarchical'       => true,
			'show_ui'            => true,
			'show_admin_column'  => true,
			'show_in_quick_edit' => true,
			'show_in_rest'       => false,
			'query_var'          => false,
			'rewrite'            => false,
			'meta_box_cb'        => 'post_categories_meta_box',
		);

		register_taxonomy( AHA_HERO_SLIDER_TAXONOMY, AHA_HERO_SLIDER_CPT, $args );
	}
}