<?php

declare(strict_types=1);

/**
 * Device Detector - The Universal Device Detection library for parsing User Agents
 *
 * @link https://matomo.org
 *
 * @license http://www.gnu.org/licenses/lgpl.html LGPL v3 or later
 */

namespace DeviceDetector;

use DeviceDetector\Cache\CacheInterface;
use DeviceDetector\Cache\StaticCache;
use DeviceDetector\Parser\AbstractBotParser;
use DeviceDetector\Parser\Bot;
use DeviceDetector\Parser\Client\AbstractClientParser;
use DeviceDetector\Parser\Client\Browser;
use DeviceDetector\Parser\Client\FeedReader;
use DeviceDetector\Parser\Client\Library;
use DeviceDetector\Parser\Client\MediaPlayer;
use DeviceDetector\Parser\Client\MobileApp;
use DeviceDetector\Parser\Client\PIM;
use DeviceDetector\Parser\Device\AbstractDeviceParser;
use DeviceDetector\Parser\Device\Camera;
use DeviceDetector\Parser\Device\CarBrowser;
use DeviceDetector\Parser\Device\Console;
use DeviceDetector\Parser\Device\HbbTv;
use DeviceDetector\Parser\Device\Mobile;
use DeviceDetector\Parser\Device\Notebook;
use DeviceDetector\Parser\Device\PortableMediaPlayer;
use DeviceDetector\Parser\Device\ShellTv;
use DeviceDetector\Parser\OperatingSystem;
use DeviceDetector\Parser\VendorFragment;
use DeviceDetector\Yaml\ParserInterface as YamlParser;
use DeviceDetector\Yaml\Spyc;

/**
 * Class DeviceDetector
 *
 * Magic Device Type Methods:
 * @method bool isSmartphone()
 * @method bool isFeaturePhone()
 * @method bool isTablet()
 * @method bool isPhablet()
 * @method bool isConsole()
 * @method bool isPortableMediaPlayer()
 * @method bool isCarBrowser()
 * @method bool isTV()
 * @method bool isSmartDisplay()
 * @method bool isSmartSpeaker()
 * @method bool isCamera()
 * @method bool isWearable()
 * @method bool isPeripheral()
 *
 * Magic Client Type Methods:
 * @method bool isBrowser()
 * @method bool isFeedReader()
 * @method bool isMobileApp()
 * @method bool isPIM()
 * @method bool isLibrary()
 * @method bool isMediaPlayer()
 */
class DeviceDetector
{
    /**
     * Current version number of DeviceDetector
     */
    public const VERSION = '4.3.1';

    /**
     * Constant used as value for unknown browser / os
     */
    public const UNKNOWN = 'UNK';

    /**
     * Holds all registered client types
     * @var array
     */
    public static $clientTypes = [];

    /**
     * Holds the useragent that should be parsed
     * @var string
     */
    protected $userAgent = '';

    /**
     * Holds the operating system data after parsing the UA
     * @var ?array
     */
    protected $os = null;

    /**
     * Holds the client data after parsing the UA
     * @var ?array
     */
    protected $client = null;

    /**
     * Holds the device type after parsing the UA
     * @var ?int
     */
    protected $device = null;

    /**
     * Holds the device brand data after parsing the UA
     * @var string
     */
    protected $brand = '';

    /**
     * Holds the device model data after parsing the UA
     * @var string
     */
    protected $model = '';

    /**
     * Holds bot information if parsing the UA results in a bot
     * (All other information attributes will stay empty in that case)
     *
     * If $discardBotInformation is set to true, this property will be set to
     * true if parsed UA is identified as bot, additional information will be not available
     *
     * If $skipBotDetection is set to true, bot detection will not be performed and isBot will
     * always be false
     *
     * @var array|bool|null
     */
    protected $bot = null;

    /**
     * @var bool
     */
    protected $discardBotInformation = false;

    /**
     * @var bool
     */
    protected $skipBotDetection = false;

    /**
     * Holds the cache class used for caching the parsed yml-Files
     * @var CacheInterface
     */
    protected $cache = null;

    /**
     * Holds the parser class used for parsing yml-Files
     * @var YamlParser
     */
    protected $yamlParser = null;

    /**
     * @var array<AbstractClientParser>
     */
    protected $clientParsers = [];

    /**
     * @var array<AbstractDeviceParser>
     */
    protected $deviceParsers = [];

    /**
     * @var array<AbstractBotParser>
     */
    public $botParsers = [];

    /**
     * @var bool
     */
    private $parsed = false;

    /**
     * Constructor
     *
     * @param string $userAgent UA to parse
     */
    public function __construct(string $userAgent = '')
    {
        if ('' !== $userAgent) {
            $this->setUserAgent($userAgent);
        }

        $this->addClientParser(new FeedReader());
        $this->addClientParser(new MobileApp());
        $this->addClientParser(new MediaPlayer());
        $this->addClientParser(new PIM());
        $this->addClientParser(new Browser());
        $this->addClientParser(new Library());

        $this->addDeviceParser(new HbbTv());
        $this->addDeviceParser(new ShellTv());
        $this->addDeviceParser(new Notebook());
        $this->addDeviceParser(new Console());
        $this->addDeviceParser(new CarBrowser());
        $this->addDeviceParser(new Camera());
        $this->addDeviceParser(new PortableMediaPlayer());
        $this->addDeviceParser(new Mobile());

        $this->addBotParser(new Bot());
    }

    /**
     * @param string $methodName
     * @param array  $arguments
     *
     * @return bool
     */
    public function __call(string $methodName, array $arguments): bool
    {
        foreach (AbstractDeviceParser::getAvailableDeviceTypes() as $deviceName => $deviceType) {
            if (\strtolower($methodName) === 'is' . \strtolower(\str_replace(' ', '', $deviceName))) {
                return $this->getDevice() === $deviceType;
            }
        }

        foreach (self::$clientTypes as $client) {
            if (\strtolower($methodName) === 'is' . \strtolower(\str_replace(' ', '', $client))) {
                return $this->getClient('type') === $client;
            }
        }

        throw new \BadMethodCallException("Method {$methodName} not found");
    }

    /**
     * Sets the useragent to be parsed
     *
     * @param string $userAgent
     */
    public function setUserAgent(string $userAgent): void
    {
        if ($this->userAgent !== $userAgent) {
            $this->reset();
        }

        $this->userAgent = $userAgent;
    }

    /**
     * @param AbstractClientParser $parser
     *
     * @throws \Exception
     */
    public function addClientParser(AbstractClientParser $parser): void
    {
        $this->clientParsers[] = $parser;
        self::$clientTypes[]   = $parser->getName();
    }

    /**
     * @return array<AbstractClientParser>
     */
    public function getClientParsers(): array
    {
        return $this->clientParsers;
    }

    /**
     * @param AbstractDeviceParser $parser
     *
     * @throws \Exception
     */
    public function addDeviceParser(AbstractDeviceParser $parser): void
    {
        $this->deviceParsers[] = $parser;
    }

    /**
     * @return array<AbstractDeviceParser>
     */
    public function getDeviceParsers(): array
    {
        return $this->deviceParsers;
    }

    /**
     * @param AbstractBotParser $parser
     */
    public function addBotParser(AbstractBotParser $parser): void
    {
        $this->botParsers[] = $parser;
    }

    /**
     * @return array<AbstractBotParser>
     */
    public function getBotParsers(): array
    {
        return $this->botParsers;
    }

    /**
     * Sets whether to discard additional bot information
     * If information is discarded it's only possible check whether UA was detected as bot or not.
     * (Discarding information speeds up the detection a bit)
     *
     * @param bool $discard
     */
    public function discardBotInformation(bool $discard = true): void
    {
        $this->discardBotInformation = $discard;
    }

    /**
     * Sets whether to skip bot detection.
     * It is needed if we want bots to be processed as a simple clients. So we can detect if it is mobile client,
     * or desktop, or enything else. By default all this information is not retrieved for the bots.
     *
     * @param bool $skip
     */
    public function skipBotDetection(bool $skip = true): void
    {
        $this->skipBotDetection = $skip;
    }

    /**
     * Returns if the parsed UA was identified as a Bot
     *
     * @see bots.yml for a list of detected bots
     *
     * @return bool
     */
    public function isBot(): bool
    {
        return !empty($this->bot);
    }

    /**
     * Returns if the parsed UA was identified as a touch enabled device
     *
     * Note: That only applies to windows 8 tablets
     *
     * @return bool
     */
    public function isTouchEnabled(): bool
    {
        $regex = 'Touch';

        return !!$this->matchUserAgent($regex);
    }

    /**
     * Returns if the parsed UA is detected as a mobile device
     *
     * @return bool
     */
    public function isMobile(): bool
    {
        // Mobile device types
        if (\in_array($this->device, [
            AbstractDeviceParser::DEVICE_TYPE_FEATURE_PHONE,
            AbstractDeviceParser::DEVICE_TYPE_SMARTPHONE,
            AbstractDeviceParser::DEVICE_TYPE_TABLET,
            AbstractDeviceParser::DEVICE_TYPE_PHABLET,
            AbstractDeviceParser::DEVICE_TYPE_CAMERA,
            AbstractDeviceParser::DEVICE_TYPE_PORTABLE_MEDIA_PAYER,
        ])
        ) {
            return true;
        }

        // non mobile device types
        if (\in_array($this->device, [
            AbstractDeviceParser::DEVICE_TYPE_TV,
            AbstractDeviceParser::DEVICE_TYPE_SMART_DISPLAY,
            AbstractDeviceParser::DEVICE_TYPE_CONSOLE,
        ])
        ) {
            return false;
        }

        // Check for browsers available for mobile devices only
        if ($this->usesMobileBrowser()) {
            return true;
        }

        $osName = $this->getOs('name');

        if (empty($osName) || self::UNKNOWN === $osName) {
            return false;
        }

        return !$this->isBot() && !$this->isDesktop();
    }

    /**
     * Returns if the parsed UA was identified as desktop device
     * Desktop devices are all devices with an unknown type that are running a desktop os
     *
     * @see OperatingSystem::$desktopOsArray
     *
     * @return bool
     */
    public function isDesktop(): bool
    {
        $osName = $this->getOsAttribute('name');

        if (empty($osName) || self::UNKNOWN === $osName) {
            return false;
        }

        // Check for browsers available for mobile devices only
        if ($this->usesMobileBrowser()) {
            return false;
        }

        return OperatingSystem::isDesktopOs($osName);
    }

    /**
     * Returns the operating system data extracted from the parsed UA
     *
     * If $attr is given only that property will be returned
     *
     * @param string $attr property to return(optional)
     *
     * @return array|string|null
     */
    public function getOs(string $attr = '')
    {
        if ('' === $attr) {
            return $this->os;
        }

        return $this->getOsAttribute($attr);
    }

    /**
     * Returns the client data extracted from the parsed UA
     *
     * If $attr is given only that property will be returned
     *
     * @param string $attr property to return(optional)
     *
     * @return array|string|null
     */
    public function getClient(string $attr = '')
    {
        if ('' === $attr) {
            return $this->client;
        }

        return $this->getClientAttribute($attr);
    }

    /**
     * Returns the device type extracted from the parsed UA
     *
     * @see AbstractDeviceParser::$deviceTypes for available device types
     *
     * @return int|null
     */
    public function getDevice(): ?int
    {
        return $this->device;
    }

    /**
     * Returns the device type extracted from the parsed UA
     *
     * @see AbstractDeviceParser::$deviceTypes for available device types
     *
     * @return string
     */
    public function getDeviceName(): string
    {
        if (null !== $this->getDevice()) {
            return AbstractDeviceParser::getDeviceName($this->getDevice());
        }

        return '';
    }

    /**
     * Returns the device brand extracted from the parsed UA
     *
     * @see self::$deviceBrand for available device brands
     *
     * @return string
     *
     * @deprecated since 4.0 - short codes might be removed in next major release
     */
    public function getBrand(): string
    {
        return AbstractDeviceParser::getShortCode($this->brand);
    }

    /**
     * Returns the full device brand name extracted from the parsed UA
     *
     * @see self::$deviceBrand for available device brands
     *
     * @return string
     */
    public function getBrandName(): string
    {
        return $this->brand;
    }

    /**
     * Returns the device model extracted from the parsed UA
     *
     * @return string
     */
    public function getModel(): string
    {
        return $this->model;
    }

    /**
     * Returns the user agent that is set to be parsed
     *
     * @return string
     */
    public function getUserAgent(): string
    {
        return $this->userAgent;
    }

    /**
     * Returns the bot extracted from the parsed UA
     *
     * @return array|bool|null
     */
    public function getBot()
    {
        return $this->bot;
    }

    /**
     * Returns true, if userAgent was already parsed with parse()
     *
     * @return bool
     */
    public function isParsed(): bool
    {
        return $this->parsed;
    }

    /**
     * Triggers the parsing of the current user agent
     */
    public function parse(): void
    {
        if ($this->isParsed()) {
            return;
        }

        $this->parsed = true;

        // skip parsing for empty useragents or those not containing any letter
        if (empty($this->userAgent) || !\preg_match('/([a-z])/i', $this->userAgent)) {
            return;
        }

        $this->parseBot();

        if ($this->isBot()) {
            return;
        }

        $this->parseOs();

        /**
         * Parse Clients
         * Clients might be browsers, Feed Readers, Mobile Apps, Media Players or
         * any other application accessing with an parseable UA
         */
        $this->parseClient();

        $this->parseDevice();
    }

    /**
     * Parses a useragent and returns the detected data
     *
     * ATTENTION: Use that method only for testing or very small applications
     * To get fast results from DeviceDetector you need to make your own implementation,
     * that should use one of the caching mechanisms. See README.md for more information.
     *
     * @internal
     *
     * @deprecated
     *
     * @param string $ua UserAgent to parse
     *
     * @return array
     */
    public static function getInfoFromUserAgent(string $ua): array
    {
        static $deviceDetector;

        if (!($deviceDetector instanceof DeviceDetector)) {
            $deviceDetector = new DeviceDetector();
        }

        $deviceDetector->setUserAgent($ua);

        $deviceDetector->parse();

        if ($deviceDetector->isBot()) {
            return [
                'user_agent' => $deviceDetector->getUserAgent(),
                'bot'        => $deviceDetector->getBot(),
            ];
        }

        $client        = $deviceDetector->getClient();
        $browserFamily = 'Unknown';

        if ($deviceDetector->isBrowser()
            && true === \is_array($client)
            && true === \array_key_exists('family', $client)
            && null !== $client['family']
        ) {
            $browserFamily = $client['family'];
        }

        unset($client['short_name'], $client['family']);

        $os       = $deviceDetector->getOs();
        $osFamily = $os['family'] ?? 'Unknown';

        unset($os['short_name'], $os['family']);

        $processed = [
            'user_agent'     => $deviceDetector->getUserAgent(),
            'os'             => $os,
            'client'         => $client,
            'device'         => [
                'type'  => $deviceDetector->getDeviceName(),
                'brand' => $deviceDetector->getBrandName(),
                'model' => $deviceDetector->getModel(),
            ],
            'os_family'      => $osFamily,
            'browser_family' => $browserFamily,
        ];

        return $processed;
    }

    /**
     * Sets the Cache class
     *
     * @param CacheInterface $cache
     */
    public function setCache(CacheInterface $cache): void
    {
        $this->cache = $cache;
    }

    /**
     * Returns Cache object
     *
     * @return CacheInterface
     */
    public function getCache(): CacheInterface
    {
        if (!empty($this->cache)) {
            return $this->cache;
        }

        return new StaticCache();
    }

    /**
     * Sets the Yaml Parser class
     *
     * @param YamlParser $yamlParser
     */
    public function setYamlParser(YamlParser $yamlParser): void
    {
        $this->yamlParser = $yamlParser;
    }

    /**
     * Returns Yaml Parser object
     *
     * @return YamlParser
     */
    public function getYamlParser(): YamlParser
    {
        if (!empty($this->yamlParser)) {
            return $this->yamlParser;
        }

        return new Spyc();
    }

    /**
     * @param string $attr
     *
     * @return string
     */
    protected function getClientAttribute(string $attr): string
    {
        if (!isset($this->client[$attr])) {
            return self::UNKNOWN;
        }

        return $this->client[$attr];
    }

    /**
     * @param string $attr
     *
     * @return string
     */
    protected function getOsAttribute(string $attr): string
    {
        if (!isset($this->os[$attr])) {
            return self::UNKNOWN;
        }

        return $this->os[$attr];
    }

    /**
     * Returns if the parsed UA contains the 'Android; Tablet;' fragment
     *
     * @return bool
     */
    protected function hasAndroidTableFragment(): bool
    {
        $regex = 'Android( [\.0-9]+)?; Tablet;';

        return !!$this->matchUserAgent($regex);
    }

    /**
     * Returns if the parsed UA contains the 'Android; Mobile;' fragment
     *
     * @return bool
     */
    protected function hasAndroidMobileFragment(): bool
    {
        $regex = 'Android( [\.0-9]+)?; Mobile;';

        return !!$this->matchUserAgent($regex);
    }

    /**
     * Returns if the parsed UA contains the 'Desktop x64;' or 'Desktop x32;' or 'Desktop WOW64' fragment
     *
     * @return bool
     */
    protected function hasDesktopFragment(): bool
    {
        $regex = 'Desktop (x(?:32|64)|WOW64);';

        return !!$this->matchUserAgent($regex);
    }

    /**
     * Returns if the parsed UA contains usage of a mobile only browser
     *
     * @return bool
     */
    protected function usesMobileBrowser(): bool
    {
        return 'browser' === $this->getClient('type')
            && Browser::isMobileOnlyBrowser($this->getClientAttribute('name'));
    }

    /**
     * Parses the UA for bot information using the Bot parser
     */
    protected function parseBot(): void
    {
        if ($this->skipBotDetection) {
            $this->bot = false;

            return;
        }

        $parsers = $this->getBotParsers();

        foreach ($parsers as $parser) {
            $parser->setUserAgent($this->getUserAgent());
            $parser->setYamlParser($this->getYamlParser());
            $parser->setCache($this->getCache());

            if ($this->discardBotInformation) {
                $parser->discardDetails();
            }

            $bot = $parser->parse();

            if (!empty($bot)) {
                $this->bot = $bot;

                break;
            }
        }
    }

    /**
     * Tries to detected the client (e.g. browser, mobile app, ...)
     */
    protected function parseClient(): void
    {
        $parsers = $this->getClientParsers();

        foreach ($parsers as $parser) {
            $parser->setYamlParser($this->getYamlParser());
            $parser->setCache($this->getCache());
            $parser->setUserAgent($this->getUserAgent());
            $client = $parser->parse();

            if (!empty($client)) {
                $this->client = $client;

                break;
            }
        }
    }

    /**
     * Tries to detected the device type, model and brand
     */
    protected function parseDevice(): void
    {
        $parsers = $this->getDeviceParsers();

        foreach ($parsers as $parser) {
            $parser->setYamlParser($this->getYamlParser());
            $parser->setCache($this->getCache());
            $parser->setUserAgent($this->getUserAgent());

            if ($parser->parse()) {
                $this->device = $parser->getDeviceType();
                $this->model  = $parser->getModel();
                $this->brand  = $parser->getBrand();

                break;
            }
        }

        /**
         * If no brand has been assigned try to match by known vendor fragments
         */
        if (empty($this->brand)) {
            $vendorParser = new VendorFragment($this->getUserAgent());
            $vendorParser->setYamlParser($this->getYamlParser());
            $vendorParser->setCache($this->getCache());
            $this->brand = $vendorParser->parse()['brand'] ?? '';
        }

        $osName     = $this->getOsAttribute('name');
        $osFamily   = $this->getOsAttribute('family');
        $osVersion  = $this->getOsAttribute('version');
        $clientName = $this->getClientAttribute('name');

        /**
         * Assume all devices running iOS / Mac OS are from Apple
         */
        if (empty($this->brand) && \in_array($osName, ['tvOS', 'watchOS', 'iOS', 'Mac'])) {
            $this->brand = 'Apple';
        }

        /**
         * Chrome on Android passes the device type based on the keyword 'Mobile'
         * If it is present the device should be a smartphone, otherwise it's a tablet
         * See https://developer.chrome.com/multidevice/user-agent#chrome_for_android_user_agent
         * Note: We do not check for browser (family) here, as there might be mobile apps using Chrome, that won't have
         *       a detected browser, but can still be detected. So we check the useragent for Chrome instead.
         */
        if (null === $this->device && 'Android' === $osFamily
            && $this->matchUserAgent('Chrome/[\.0-9]*')
        ) {
            if ($this->matchUserAgent('Chrome/[\.0-9]* (?:Mobile|eliboM)')) {
                $this->device = AbstractDeviceParser::DEVICE_TYPE_SMARTPHONE;
            } elseif ($this->matchUserAgent('Chrome/[\.0-9]* (?!Mobile)')) {
                $this->device = AbstractDeviceParser::DEVICE_TYPE_TABLET;
            }
        }

        /**
         * Some UA contain the fragment 'Android; Tablet;' or 'Opera Tablet', so we assume those devices as tablets
         */
        if (null === $this->device && ($this->hasAndroidTableFragment()
            || $this->matchUserAgent('Opera Tablet'))
        ) {
            $this->device = AbstractDeviceParser::DEVICE_TYPE_TABLET;
        }

        /**
         * Some user agents simply contain the fragment 'Android; Mobile;', so we assume those devices as smartphones
         */
        if (null === $this->device && $this->hasAndroidMobileFragment()) {
            $this->device = AbstractDeviceParser::DEVICE_TYPE_SMARTPHONE;
        }

        /**
         * Android up to 3.0 was designed for smartphones only. But as 3.0, which was tablet only, was published
         * too late, there were a bunch of tablets running with 2.x
         * With 4.0 the two trees were merged and it is for smartphones and tablets
         *
         * So were are expecting that all devices running Android < 2 are smartphones
         * Devices running Android 3.X are tablets. Device type of Android 2.X and 4.X+ are unknown
         */
        if (null === $this->device && 'Android' === $osName && '' !== $osVersion) {
            if (-1 === \version_compare($osVersion, '2.0')) {
                $this->device = AbstractDeviceParser::DEVICE_TYPE_SMARTPHONE;
            } elseif (\version_compare($osVersion, '3.0') >= 0
                && -1 === \version_compare($osVersion, '4.0')
            ) {
                $this->device = AbstractDeviceParser::DEVICE_TYPE_TABLET;
            }
        }

        /**
         * All detected feature phones running android are more likely a smartphone
         */
        if (AbstractDeviceParser::DEVICE_TYPE_FEATURE_PHONE === $this->device && 'Android' === $osFamily) {
            $this->device = AbstractDeviceParser::DEVICE_TYPE_SMARTPHONE;
        }

        /**
         * According to http://msdn.microsoft.com/en-us/library/ie/hh920767(v=vs.85).aspx
         * Internet Explorer 10 introduces the "Touch" UA string token. If this token is present at the end of the
         * UA string, the computer has touch capability, and is running Windows 8 (or later).
         * This UA string will be transmitted on a touch-enabled system running Windows 8 (RT)
         *
         * As most touch enabled devices are tablets and only a smaller part are desktops/notebooks we assume that
         * all Windows 8 touch devices are tablets.
         */

        if (null === $this->device && ('Windows RT' === $osName || ('Windows' === $osName
            && \version_compare($osVersion, '8') >= 0)) && $this->isTouchEnabled()
        ) {
            $this->device = AbstractDeviceParser::DEVICE_TYPE_TABLET;
        }

        /**
         * All devices running Opera TV Store are assumed to be a tv
         */
        if ($this->matchUserAgent('Opera TV Store')) {
            $this->device = AbstractDeviceParser::DEVICE_TYPE_TV;
        }

        /**
         * All devices running Tizen TV or SmartTV are assumed to be a tv
         */
        if (null === $this->device && $this->matchUserAgent('SmartTV|Tizen.+ TV .+$')) {
            $this->device = AbstractDeviceParser::DEVICE_TYPE_TV;
        }

        /**
         * Devices running Kylo or Espital TV Browsers are assumed to be a TV
         */
        if (null === $this->device && \in_array($clientName, ['Kylo', 'Espial TV Browser'])) {
            $this->device = AbstractDeviceParser::DEVICE_TYPE_TV;
        }

        /**
         * Set device type desktop if string ua contains desktop
         */
        $hasDesktop = AbstractDeviceParser::DEVICE_TYPE_DESKTOP !== $this->device
            && false !== \strpos($this->userAgent, 'Desktop')
            && $this->hasDesktopFragment();

        if ($hasDesktop) {
            $this->device = AbstractDeviceParser::DEVICE_TYPE_DESKTOP;
        }

        // set device type to desktop for all devices running a desktop os that were not detected as another device type
        if (null !== $this->device || !$this->isDesktop()) {
            return;
        }

        $this->device = AbstractDeviceParser::DEVICE_TYPE_DESKTOP;
    }

    /**
     * Tries to detect the operating system
     */
    protected function parseOs(): void
    {
        $osParser = new OperatingSystem();
        $osParser->setUserAgent($this->getUserAgent());
        $osParser->setYamlParser($this->getYamlParser());
        $osParser->setCache($this->getCache());
        $this->os = $osParser->parse();
    }

    /**
     * @param string $regex
     *
     * @return array|null
     */
    protected function matchUserAgent(string $regex): ?array
    {
        $regex = '/(?:^|[^A-Z_-])(?:' . \str_replace('/', '\/', $regex) . ')/i';

        if (\preg_match($regex, $this->userAgent, $matches)) {
            return $matches;
        }

        return null;
    }

    /**
     * Resets all detected data
     */
    protected function reset(): void
    {
        $this->bot    = null;
        $this->client = null;
        $this->device = null;
        $this->os     = null;
        $this->brand  = '';
        $this->model  = '';
        $this->parsed = false;
    }
}
