<?php

namespace AdPresso\Groups;

use AdPresso\RuntimeDebugger;

defined( 'ABSPATH' ) || exit;

/**
 * Group Type Registry. Every group type needs to be registered here.
 */
class GroupTypeRegistry {

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

	/**
	 * @var array<string, Object>
	 */
	private array $types = [];

	private function __construct() {
	}

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

	/**
	 * @param $type
	 *
	 * @return void
	 */
	public function register( $type ): void {
		$id = $type->get_id();

		if ( isset( $this->types[ $id ] ) ) {
			RuntimeDebugger::add_doing_it_wrong_entry(
				sprintf( 'Group Type ID "%s" was overwritten. Origin type: %s, New type: %s', esc_html( $id ), esc_html( get_class( $this->types[ $id ] ) ), esc_html( get_class( $type ) ) )
			);
		}

		$this->types[ $id ] = $type;

		add_action( 'adpresso_group_types_registered', [ $type, 'register_fields' ], 10, 0 );
	}

	/**
	 * @param string $id
	 *
	 * @return Object|null
	 */
	public function get_by_id( string $id ): ?object {
		return $this->types[ $id ] ?? null;
	}
}