<?php
/**
 * Commercial license plan value object.
 *
 * @package ZeroSpamForms
 */

namespace TwoOTwoCode\ZeroSpamForms\Commercial\Licensing;

defined( 'ABSPATH' ) || exit;

/**
 * Represents a safe local plan label.
 */
final class LicensePlan {
	public const FREE = 'free';
	public const PRO  = 'pro';
	public const NONE = 'none';

	/**
	 * Plan value.
	 *
	 * @var string
	 */
	private $value;

	/**
	 * Constructor.
	 *
	 * @param string $value Plan value.
	 */
	private function __construct( string $value ) {
		$value       = strtolower( trim( $value ) );
		$this->value = in_array( $value, array( self::FREE, self::PRO, self::NONE ), true ) ? $value : self::NONE;
	}

	/**
	 * Create the free-safe plan.
	 */
	public static function free(): self {
		return new self( self::FREE );
	}

	/**
	 * Create a pro plan value for future active statuses.
	 */
	public static function pro(): self {
		return new self( self::PRO );
	}

	/**
	 * Create an empty plan.
	 */
	public static function none(): self {
		return new self( self::NONE );
	}

	/**
	 * Get plan value.
	 */
	public function get_value(): string {
		return $this->value;
	}

	/**
	 * Whether the plan is pro.
	 */
	public function is_pro(): bool {
		return self::PRO === $this->value;
	}
}