<?php

namespace Depicter\Services;

class AuthenticationService {

	/**
	 * Retrieves client's tier
	 *
	 * @return string
	 */
	public function getTier(){
		$baseTier = 'free-user';
		$baseVer  = '2.0.9';
		$initialVersion = \Depicter::options()->get('version_initial', $baseVer);

		if (version_compare($initialVersion, $baseVer, '<=')) {
			$baseTier .= '+';
		} elseif (version_compare($initialVersion, '4.0.5', '<=')) {
			$baseTier .= '-';
		}

		return \Depicter::options()->get('user_tier', $baseTier ) ?: $baseTier;
	}

	/**
	 * Whether client has not free tier or not
	 *
	 * @return bool
	 */
	public function isPaid(){
		return false === strpos( $this->getTier(), 'free-user' );
	}

	/**
	 * Whether client has not free tier or not
	 *
	 * @return bool
	 */
	public function isFreeTier($class = ''){
		return $this->getTier() === 'free-user' . $class;
	}

	/**
	 * Verify if it is an activated installation or not
	 *
	 * @return bool
	 */
	public function verifyActivation(){
		return \Depicter::client()->validateActivation();
	}

	/**
	 * Whether it is an activated installation or not
	 *
	 * @return bool
	 */
	public function isActivated(){
		return $this->getActivationStatus() === 'activated';
	}

	/**
	 * Retrieves subscription activation status
	 *
	 * @return string
	 */
	public function getActivationStatus(){
		$activationStatus = \Depicter::options()->get('subscription_status', 'not-activated');
		$activationError  = \Depicter::options()->get('activation_error_message', '');
		return ( 'activated' !== $activationStatus ) && ! empty( $activationError ) ? 'error': $activationStatus;
	}

	/**
	 * Retrieves subscription status
	 *
	 * @return string
	 */
	public function getSubscriptionStatus(){

		if( $subExpiresAt = \Depicter::options()->get('subscription_expires_at' , '') ){
			$subExpiresAtTimestamp = strtotime($subExpiresAt." UTC");
			$afterExpirationInSeconds = time() - $subExpiresAtTimestamp;

			if( $afterExpirationInSeconds > 5 * DAY_IN_SECONDS ) {
				return 'expired';
			} elseif( $afterExpirationInSeconds > 0 ){
				return 'expired-early';
			}
		}

		return \Depicter::options()->get('subscription_status', '');
	}

	/**
	 * If current subscription is expired
	 *
	 * @return bool
	 */
	public function isSubscriptionExpired(){
		return $this->getSubscriptionStatus() === 'expired';
	}

	/**
	 * Get client key
	 *
	 * @return string
	 */
	public function getClientKey(){
		return \Depicter::options()->get( 'client_key', '' );
	}
}