<?
class UserAgent {
	private static $Browsers = array(
		//Less popular
		'Shiira'			=> 'Shiira',
		'Songbird'			=> 'Songbird',
		'SeaMonkey'			=> 'SeaMonkey',
		'OmniWeb'			=> 'OmniWeb',
		'Camino'			=> 'Camino',
		'Chimera'			=> 'Chimera',
		'Epiphany'			=> 'Epiphany',
		'Konqueror'			=> 'Konqueror',
		'Iceweasel'			=> 'Iceweasel',
		'Lynx'				=> 'Lynx',
		'Links'				=> 'Links',
		'libcurl'			=> 'cURL',
		'midori'			=> 'Midori',
		'Blackberry'		=> 'BlackBerry Browser',
		//Big names
		'Firefox'			=> 'Firefox',
		'OPR'				=> 'Opera Blink', # Opera 15+ (the version running Blink)
		'Opera'				=> 'Opera',
		'Chrome'			=> 'Chrome',
		'Safari'			=> 'Safari',
		//Put Chrome Frame above IE
		'chromeframe'		=> 'Chrome Frame',
		'x-clock'			=> 'Chrome Frame',
		'MSIE'				=> 'Internet Explorer',
		//Firefox versions
		'Shiretoko'			=> 'Firefox (Experimental)',
		'Minefield'			=> 'Firefox (Experimental)',
		'GranParadiso'		=> 'Firefox (Experimental)',
		'Namoroka'			=> 'Firefox (Experimental)',
		'AppleWebKit'		=> 'WebKit',
		'Mozilla'			=> 'Mozilla'
		//Weird shit
		/*
		'WWW-Mechanize'		=> 'Perl',
		'Wget'				=> 'Wget',
		'BTWebClient'		=> 'µTorrent',
		'Transmission'		=> 'Transmission',
		'Java'				=> 'Java',
		'RSS'				=> 'RSS Downloader'
		*/
	);

	private static $OperatingSystems = array(
		//Mobile
		'SymbianOS'			=> 'Symbian',
		'blackberry'		=> 'BlackBerry',
		'iphone'			=> 'iPhone',
		'ipod'				=> 'iPhone',
		'android'			=> 'Android',
		'palm'				=> 'Palm',
		'mot-razr'			=> 'Motorola Razr',
		// 'tablet PC'			=> 'Windows RT',
		// 'ARM; Trident'		=> 'Windows RT',
		//Windows
		'Windows NT 6.3'	=> 'Windows 8.1',
		'Windows 8.1'		=> 'Windows 8.1',
		'Windows NT 6.2'	=> 'Windows 8',
		'Windows 8'			=> 'Windows 8',
		'Windows NT 6.1'	=> 'Windows 7',
		'Windows 7'			=> 'Windows 7',
		'Windows NT 6.0'	=> 'Windows Vista',
		'Windows Vista'		=> 'Windows Vista',
		'windows nt 5.2'	=> 'Windows 2003',
		'windows 2003'		=> 'Windows 2003',
		'windows nt 5.0'	=> 'Windows 2000',
		'windows 2000'		=> 'Windows 2000',
		'windows nt 5.1'	=> 'Windows XP',
		'windows xp'		=> 'Windows XP',
		'Win 9x 4.90'		=> 'Windows ME',
		'Windows Me'		=> 'Windows ME',
		'windows nt'		=> 'Windows NT',
		'winnt'				=> 'Windows NT',
		'windows 98'		=> 'Windows 98',
		'windows ce'		=> 'Windows CE',
		'win98'				=> 'Windows 98',
		'windows 95'		=> 'Windows 95',
		'windows 95'		=> 'Windows 95',
		'win95'				=> 'Windows 95',
		'win16'				=> 'Windows 3.1',
		//'windows'			=> 'Windows',
		//OS X
		'os x'				=> 'Mac OS X',
		'macintosh'			=> 'Mac OS X',
		'darwin'			=> 'Mac OS X',
		//Less popular
		'ubuntu'			=> 'Ubuntu',
		'debian'			=> 'Debian',
		'fedora'			=> 'Fedora',
		'freebsd'			=> 'FreeBSD',
		'openbsd'			=> 'OpenBSD',
		'bsd'				=> 'BSD',
		'x11'				=> 'Linux',
		'gnu'				=> 'Linux',
		'linux'				=> 'Linux',
		'unix'				=> 'Unix',
		'Sun OS'			=> 'Sun',
		'Sun'				=> 'Sun',
		//Weird shit
		/*
		'WWW-Mechanize'		=> 'Perl',
		'Wget'				=> 'Wget',
		'BTWebClient'		=> 'µTorrent',
		'Transmission'		=> 'Transmission',
		'Java'				=> 'Java',
		'RSS'				=> 'RSS Downloader',
		*/
		//Catch-all
		'win'				=> 'Windows',
		'mac'				=> 'Mac OS X'
	);

	public static function operating_system(&$UserAgentString) {
		if (empty($UserAgentString)) {
			return 'Hidden';
		}
		foreach (self::$OperatingSystems as $String => $OperatingSystem) {
			if (stripos($UserAgentString, $String) !== false) {
				return $OperatingSystem;
			}
		}
		return 'Unknown';
	}

	public static function mobile(&$UserAgentString) {
		if (strpos($UserAgentString, 'iPad') !== false) {
			return false;
		}

		// "Mobi" catches "Mobile" too
		if (strpos($UserAgentString, 'Device') || strpos($UserAgentString, 'Mobi') || strpos($UserAgentString, 'Mini') || strpos($UserAgentString, 'webOS')) {
			return true;
		}
		return false;
	}

	public static function browser(&$UserAgentString) {
		if (empty($UserAgentString)) {
			return 'Hidden';
		}
		$Return = 'Unknown';
		foreach (self::$Browsers as $String => $Browser) {
			if (strpos($UserAgentString, $String) !== false) {
				$Return = $Browser;
				break;
			}
		}
		if (self::mobile($UserAgentString)) {
			$Return .= ' Mobile';
		}
		return $Return;
	}
}