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<?php

/**
 * License class.
 *
 * Helper for licenses.
 *
 * @since 1.0.0
 *
 * @package UserFeedback
 * @subpackage License
 * @author  David Paternina
 */

// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

final class UserFeedback_License {

private static $license_option_name         = 'userfeedback_license';
	private static $network_license_option_name = 'userfeedback_network_license';

private $site                  = array();
	private $network               = array();
	private $licensed              = false;
	private $using_network_license = false;

/**
	 * Primary class constructor.
	 *
	 * @access public
	 * @since 7.0.0
	 */
	public function __construct() {
		$this->site    = $this->get_site_license();
		$this->network = $this->get_network_license();
		$this->license_to_use();
	}

public function get_site_license( $force = false ) {
		if ( ! empty( $this->site ) && ! $force ) {
			return $this->site;
		} else {
			$site       = get_option( self::$license_option_name, array() );
			$this->site = $site;
			return $site;
		}
	}

public function get_network_license( $force = false ) {
		if ( ! empty( $this->network ) && ! $force ) {
			return $this->network;
		} else {
			$network       = get_site_option( self::$network_license_option_name, array() );
			$this->network = $network;
			return $network;
		}
	}

private function license_to_use() {
		if ( is_network_admin() ) {
			$license = $this->get_network_license_key();
			if ( ! empty( $license ) ) {
				$this->licensed              = true;
				$this->using_network_license = true;
			}
		} else {
			$license = $this->get_site_license_key();
			if ( ! empty( $license ) ) {
				$this->licensed              = true;
				$this->using_network_license = false;
			} else {
				$license = $this->get_network_license_key();
				if ( ! empty( $license ) ) {
					$this->licensed              = true;
					$this->using_network_license = true;
				}
			}
		}
	}

public function using_network_license() {
		return $this->using_network_license;
	}

public function get_license_key() {
		$license_key = UserFeedback()->license->get_site_license_key();
		$license_key = ! empty( $license_key ) ? $license_key : UserFeedback()->license->get_network_license_key();
		$license_key = ! empty( $license_key ) ? $license_key : UserFeedback()->license->get_default_license_key();
		return $license_key;
	}

public function has_license() {
		return $this->licensed;
	}

public function is_site_licensed() {
		return ! empty( $this->site['key'] ) // has key
			&& $this->get_site_license_type() // has type
			&& ! $this->site_license_expired()  // isn't expired
			&& ! $this->site_license_disabled()  // isn't disabled
			&& ! $this->site_license_invalid();  // isn't invalid

}

public function is_network_licensed() {
		return ! empty( $this->network['key'] ) // has key
			&& $this->get_network_license_type() // has type
			&& ! $this->network_license_expired()  // isn't expired
			&& ! $this->network_license_disabled()  // isn't disabled
			&& ! $this->network_license_invalid();  // isn't invalid

}

public function get_license_error() {
		if ( ! $this->has_license() ) {
			return false;
		}

return $this->using_network_license() ? $this->get_network_license_error() : $this->get_site_license_error();
	}

public function license_can( $requires = 'lite' ) {
		if ( ! userfeedback_is_pro_version() || ! $this->has_license() ) {
			return $requires === 'lite';
		}
		return $this->using_network_license() ? $this->network_license_can( $requires ) : $this->site_license_can( $requires );
	}

public function license_disabled() {
		if ( ! $this->has_license() ) {
			return false;
		}

return $this->using_network_license() ? $this->network_license_disabled() : $this->site_license_disabled();
	}

public function license_expired() {
		if ( ! $this->has_license() ) {
			return false;
		}

return $this->using_network_license() ? $this->network_license_expired() : $this->site_license_expired();
	}

public function license_has_error() {
		if ( ! $this->has_license() ) {
			return false;
		}

return $this->using_network_license() ? $this->network_license_has_error() : $this->site_license_has_error();
	}

public function get_default_license_key() {
		if ( defined( 'USERFEEDBACK_LICENSE_KEY' )
			&& is_string( USERFEEDBACK_LICENSE_KEY )
			&& strlen( USERFEEDBACK_LICENSE_KEY ) > 10 ) {
			return USERFEEDBACK_LICENSE_KEY;
		}
		return '';
	}

public function get_valid_license_key() {
		if ( $this->is_site_licensed() ) {
			return $this->get_site_license_key();
		} elseif ( $this->is_network_licensed() ) {
			return $this->get_network_license_key();
		} elseif ( $this->get_default_license_key() ) {
			return $this->get_default_license_key();
		} else {
			return '';
		}
	}

public function license_invalid() {
		if ( ! $this->has_license() ) {
			return false;
		}

return $this->using_network_license() ? $this->network_license_invalid() : $this->site_license_invalid();
	}

public function is_network_admin() {
		return is_multisite() && is_network_admin();
	}

public function get_license_type() {
		if ( ! $this->has_license() ) {
			return false;
		}

return $this->using_network_license() ? $this->get_network_license_type() : $this->get_site_license_type();
	}

// ----------

public function get_site_license_key() {
		return ( ! empty( $this->site['key'] ) && is_string( $this->site['key'] ) && strlen( $this->site['key'] ) > 10 ) ? $this->site['key'] : '';
	}

public function get_site_license_type() {
		return ( $this->get_site_license_key() && ! empty( $this->site['type'] )
				&& $this->is_valid_license_type( $this->site['type'] ) ) ? $this->site['type'] : '';
	}

public function site_license_expired() {
		return ! empty( $this->site['is_expired'] );
	}

public function site_license_disabled() {
		return ! empty( $this->site['is_disabled'] );
	}

public function site_license_invalid() {
		return ! empty( $this->site['is_invalid'] );
	}

public function get_site_license_error() {
		if ( $this->site_license_expired() ) {
			// Translators: Adds a link to renew the license.
			return sprintf( esc_html__( 'Your license key for UserFeedback has expired. %1$sPlease click here to renew your license key.%2$s', 'userfeedback' ), '<a href="' . userfeedback_get_url( 'license-error', 'expired-license', 'https://www.userfeedback.com/login/' ) . '" target="_blank" rel="noopener noreferrer" referrer="no-referrer">', '</a>' );
		} elseif ( $this->site_license_disabled() ) {
			return esc_html__( 'Your license key for UserFeedback has been disabled. Please use a different key.', 'userfeedback' );
		} elseif ( $this->site_license_invalid() ) {
			return esc_html__( 'Your license key for UserFeedback is invalid. The key no longer exists or the user associated with the key has been deleted. Please use a different key.', 'userfeedback' );
		}
		return '';
	}

public function site_license_can( $requires = 'lite' ) {
		$level      = $this->get_site_license_type();
		$level      = $level ?: 'lite';
		$can_access = false;

switch ( $requires ) {
			case 'elite':
				$can_access = $level === 'elite';
				break;

case 'pro':
				$can_access = $level === 'master' || $level === 'pro';
				break;

case 'plus':
				$can_access = $level === 'master' || $level === 'pro' || $level === 'plus';
				break;

case 'lite':
			default:
				$can_access = true;
				break;
		}

return $can_access;
	}

public function site_license_has_error() {
		return $this->site_license_expired()  // is expired
			|| $this->site_license_disabled()  // is disabled
			|| $this->site_license_invalid();  // is invalid

}

// --------

public function get_network_license_key() {
		return ( ! empty( $this->network['key'] ) && is_string( $this->network['key'] ) && strlen( $this->network['key'] ) > 10 ) ? $this->network['key'] : '';
	}

public function get_network_license_type() {
		return ( $this->get_network_license_key() && ! empty( $this->network['type'] ) && $this->is_valid_license_type( $this->network['type'] ) ) ? $this->network['type'] : '';
	}

public function network_license_expired() {
		return ! empty( $this->network['is_expired'] );
	}

public function network_license_disabled() {
		return ! empty( $this->network['is_disabled'] );
	}

public function network_license_invalid() {
		return ! empty( $this->network['is_invalid'] );
	}

public function get_network_license_error() {
		if ( $this->site_license_expired() ) {
			// Translators: Adds a link to the license renewal.
			return sprintf( esc_html__( 'Your license key for UserFeedback has expired. %1$sPlease click here to renew your license key.%2$s', 'userfeedback' ), '<a href="' . userfeedback_get_url( 'license-error', 'expired-license', 'https://www.userfeedback.com/login/' ) . '" target="_blank" rel="noopener noreferrer" referrer="no-referrer">', '</a>' );
		} elseif ( $this->site_license_disabled() ) {
			return esc_html__( 'Your license key for UserFeedback has been disabled. Please use a different key.', 'userfeedback' );
		} elseif ( $this->site_license_invalid() ) {
			return esc_html__( 'Your license key for UserFeedback is invalid. The key no longer exists or the user associated with the key has been deleted. Please use a different key.', 'userfeedback' );
		}
		return '';
	}

public function network_license_can( $requires = 'lite' ) {
		$level      = $this->get_network_license_type();
		$level      = $level ?: 'lite';
		$can_access = false;

switch ( $requires ) {
			case 'elite':
				$can_access = $level === 'elite';
				break;

case 'pro':
				$can_access = $level === 'master' || $level === 'pro';
				break;

case 'plus':
				$can_access = $level === 'master' || $level === 'pro' || $level === 'plus';
				break;

case 'lite':
			default:
				$can_access = true;
				break;
		}

return $can_access;
	}

public function network_license_has_error() {
		return $this->network_license_expired()  // is expired
			|| $this->network_license_disabled()  // is disabled
			|| $this->network_license_invalid();  // is invalid

}

// ----------

public function valid_license_types() {
		return array(
			'basic',
			'plus',
			'pro',
			'elite',
		);
	}

public function is_valid_license_type( $type = '' ) {
		return ! empty( $type ) && is_string( $type ) && in_array( $type, $this->valid_license_types() );
	}

// ---------

public function get_site_license_updates() {
		return get_option( 'userfeedback_license_updates', '' );
	}
	public function get_network_license_updates() {
		return get_site_option( 'userfeedback_network_license_updates', '' );
	}

public function set_site_license_updates() {
		update_option( 'userfeedback_license_updates', strtotime( '+8 hours' ) );
	}
	public function set_network_license_updates() {
		update_site_option( 'userfeedback_network_license_updates', strtotime( '+8 hours' ) );
	}

public function delete_site_license_updates() {
		delete_option( 'userfeedback_license_updates' );
	}
	public function delete_network_license_updates() {
		delete_site_option( 'userfeedback_license_updates' );
	}

public function time_to_check_site_license() {
		$timestamp = get_option( 'userfeedback_license_updates' );
		if ( ! $timestamp ) {
			return true;
		} else {
			$current_timestamp = time();
			if ( $current_timestamp < $timestamp ) {
				return false;
			} else {
				return true;
			}
		}
	}
	public function time_to_check_network_license() {
		$timestamp = get_site_option( 'userfeedback_network_license_updates' );
		if ( ! $timestamp ) {
			return true;
		} else {
			$current_timestamp = time();
			if ( $current_timestamp < $timestamp ) {
				return false;
			} else {
				return true;
			}
		}
	}

public function set_site_license( $data = array() ) {
		update_option( 'userfeedback_license', $data );
		$this->set_site_license_updates();
		$this->site = $data;
	}
	public function set_network_license( $data = array() ) {
		update_site_option( 'userfeedback_network_license', $data );
		$this->set_network_license_updates();
		$this->network = $data;
	}

public function delete_site_license() {
		delete_option( 'userfeedback_license' );
		$this->delete_site_license_updates();
		$this->site = array();
	}
	public function delete_network_license() {
		delete_site_option( 'userfeedback_network_license' );
		$this->delete_network_license_updates();
		$this->network = array();
	}
}