<?php

declare(strict_types=1);

namespace WebCalendar\WP\Holiday;

defined( 'ABSPATH' ) || exit;

/**
 * Registry of holiday data providers.
 */
class HolidayProviderRegistry {

	/**
	 * @var array<string, HolidayProviderInterface>
	 */
	private array $providers = [];

	public function __construct( HolidayProviderInterface ...$providers ) {
		foreach ( $providers as $provider ) {
			$this->providers[ $provider->get_id() ] = $provider;
		}
	}

	/**
	 * Get all registered providers.
	 *
	 * @return array<string, HolidayProviderInterface>
	 */
	public function get_providers(): array {
		return $this->providers;
	}

	/**
	 * Look up a provider by ID.
	 *
	 * @param string $id Provider ID.
	 * @return HolidayProviderInterface|null
	 */
	public function get_provider( string $id ): ?HolidayProviderInterface {
		return $this->providers[ $id ] ?? null;
	}
}