<?php
/**
*
* @ This file is created by http://DeZender.Net
* @ deZender (PHP7 Decoder for Plesk Encoder)
*
* @ Version			:	4.0.9.0
* @ Author			:	DeZender
* @ Release on		:	08.08.2019
* @ Official site	:	http://DeZender.Net
*
*/

class Modules_Kolab_License
{
	const CACHE = true;

	static protected $instance;
	static protected $license;
	static protected $license_count;
	static protected $license_limit;
	static protected $expiry_date;
	static protected $renewal_date;
	static private $product_name = 'ext-kolab';

	static public function get_instance()
	{
		if (!self::$instance) {
			self::$instance = new Modules_Kolab_License();
		}

		return self::$instance;
	}

	static public function is_current()
	{
		if (!self::$expiry_date) {
			self::expire_date();
		}

		if (!self::$renewal_date) {
			self::renew_date();
		}

		$now = new DateTime('now');

		if (self::$expiry_date < $now) {
			pm_Log::debug('License expired. Message ID 70.');
			return false;
		}

		if (self::$renewal_date < $now) {
			pm_Log::debug('License pending renewal. Message ID 75.');
			return true;
		}

		return true;
	}

	static public function is_licensed()
	{
		if (!self::$license) {
			$result = self::get_license();

			if (!$result) {
				pm_Log::debug('Can not validate license. Message ID 89.');
				return false;
			}
		}

		if (!self::is_current()) {
			return false;
		}

		return true;
	}

	static public function is_valid()
	{
		if (!self::$license) {
			if (!self::get_license()) {
				return false;
			}
		}

		if (!self::is_current()) {
			return false;
		}

		return true;
	}

	static public function license_count_for_domains($domains, $count_free_mailboxes)
	{
		$api = pm_ApiRpc::getService();
		$count = 0;

		foreach ($domains as $domain) {
			if (!$domain->isActive()) {
				continue;
			}
			if (!$count_free_mailboxes && !$domain->hasPermission('manage_kolab')) {
				continue;
			}

			$request = '<webspace><get><filter><id>' . $domain->getId() . '</id>' . '</filter><dataset><stat/></dataset>' . '</get></webspace>';
			$result = $api->call($request, 'admin');
			$count += $result->webspace->get->result->data->stat->box;
		}

		return $count;
	}

	static public function license_count()
	{
		if (self::$license_count) {
			return self::$license_count;
		}

		$recent = self::cache_get('license-count', false);

		if ($recent !== false) {
			$recent = json_decode($recent, true);
			if ((time() <= $recent['time'] + 600) && ($recent['time'] < (time() + 10))) {
				if ($recent['count'] == NULL) {
					return 0;
				}

				return $recent['count'];
			}
		}

		$count = self::license_count_for_domains(pm_Domain::getAllDomains(true), false);
		self::cache_set('license-count', json_encode(['time' => time(), 'count' => $count]));
		self::$license_count = $count;
		return $count;
	}

	static public function invalidate_count_cache()
	{
		pm_Settings::set('license-count', false);
	}

	static public function license_warning_threshold()
	{
		if (self::license_limit() < 0) {
			return false;
		}

		if (self::license_limit() <= 20) {
			$count_threshold = floor(self::license_limit() * 0.8);
		}
		else if (self::license_limit() <= 200) {
			$count_threshold = floor(self::license_limit() * 0.9);
		}
		else {
			$count_threshold = floor(self::license_limit() * 0.95);
		}

		if ($count_threshold <= self::license_count()) {
			return true;
		}

		return false;
	}

	static public function license_limit()
	{
		if (self::$license_limit) {
			return self::$license_limit;
		}

		if (!self::$license) {
			if (!self::get_license()) {
				return -1;
			}
		}

		if (!self::is_current()) {
			return -1;
		}

		$recent = self::cache_get('license-limit', false);

		if ($recent !== false) {
			$recent = json_decode($recent, true);
			if ((time() <= $recent['time'] + 600) && ($recent['time'] < (time() + 10))) {
				return $recent['limit'];
			}
		}

		$body = self::$license['key-body'];
		$body_parsed = openssl_x509_parse($body);

		if (!array_key_exists('extensions', $body_parsed)) {
			self::$license_limit = (int) explode(' ', self::$license['app'])[1];
			self::cache_set('license-limit', json_encode(['time' => time(), 'limit' => self::$license_limit]));
			return self::$license_limit;
		}

		if (!array_key_exists('nsComment', $body_parsed['extensions'])) {
			self::$license_limit = (int) explode(' ', self::$license['app'])[1];
			self::cache_set('license-limit', json_encode(['time' => time(), 'limit' => self::$license_limit]));
			return self::$license_limit;
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