<?php
class Deepbot {
	private $_apikey;
	private $_host;
	private $_port;
	private $_socket;
	private $_ssl;
	public $response;
	private $_connected = false;

	public function __construct($host, $apikey, $port = 3337,$ssl = true) {
		$this->_host = $host;
		$this->_apikey = $apikey;
		$this->_port = $port;
		$this->_ssl = $ssl;
	}
	
	public function __destruct()
	{
		$this->disconnect();
	}
	
	public function connect($i = 0)
	{		
		$maxtries =  3;
		$key = base64_encode($this->_generateRandomString(16, false, true));				
		$header = "GET /api/ HTTP/1.1\r\n";
		$header.= "Host: ".$this->_host.":".$this->_port."\r\n";
		$header.= "Upgrade: websocket\r\n";
		$header.= "Connection: Upgrade\r\n";
		$header.= "Sec-WebSocket-Key: " . $key . "\r\n";
		$header.= "Sec-WebSocket-Version: 13\r\n\r\n";			
		
		$ssl = '';
		if ($this->_ssl) {
			$ssl = 'tls://';
		}
		$this->_socket = fsockopen($ssl.$this->_host, $this->_port, $errno, $errstr, 1);
		socket_set_timeout($this->_socket, 0, 250000);
		@fwrite($this->_socket, $header);
		$response = stream_get_line($this->_socket,512,"\r\n\r\n");
		preg_match('#Sec-WebSocket-Accept:\s(.*)$#mU', $response, $matches);
		if ($matches) {
			$keyAccept = trim($matches[1]);
			$expectedResonse = base64_encode(pack('H*', sha1($key . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));			
			$this->_connected = ($keyAccept === $expectedResonse) ? true : false;	
		}
		if ($this->_connected == false) {
			$this->disconnect();
			$i++;
			if ($i < $maxtries) {
				return $this->connect($i);
			}
			return false;
		}
		return true;
	}
	
	public function authenticate() {
		if ($this->_connected) {
			$this->_sendData("api|register|".$this->_apikey);
			$json = json_decode($this->response);
			if ($json->msg == "success") {
				return true;
			}
		}
		return false;
	}
	
	public function addPoints($user,$points) {
		if ($this->_connected) {
			$this->_sendData("api|add_points|".$user."|".$points);
			$json = json_decode($this->response);
			if ($json->msg == "success") {
				return true;
			}
		}
		return false;
	}

	public function removePoints($user,$points) {
		if ($this->_connected) {
			$this->_sendData("api|del_points|".$user."|".$points."|1");
			$json = json_decode($this->response);
			if ($json->msg == "success") {
				return true;
			}
		}
		return false;
	}	
	
	public function setPoints($user,$points) {
		if ($this->_connected) {
			$this->_sendData("api|set_points|".$user."|".$points);
			$json = json_decode($this->response);
			if ($json->msg == "success") {
				return true;
			}
		}			
		return false;
	}		

	public function getPoints($user) {
		if ($this->_connected) {
			$this->_sendData("api|get_points|".$user);
			$json = json_decode($this->response);
			if (strpos($json->msg,".") >= 0) {
				return floatval($json->msg);
			}
		}
		return false;
	}	
	
	public function getHours($user) {
		if ($this->_connected) {
			$this->_sendData("api|get_hours|".$user);
			$json = json_decode($this->response);
			if (strpos($json->msg,".") > 0) {
				return floatval($json->msg);
			}
		}			
		return false;
	}		

	public function getUser($user) {
		if ($this->_connected) {
			$this->_sendData("api|get_user|".$user);
			$json = json_decode($this->response);
			if (is_object($json->msg)) {
				return $json->msg;
			}
		}			
		return false;
	}		

	public function getTopUsers($count = 5,$offset = 0) {
		if ($this->_connected) {
			$this->_sendData("api|get_top_users|".$offset."|".$count);
			$json = json_decode($this->response);
			if (is_array($json->msg)) {
				return $json->msg;
			}
		}			
		return false;
	}
	
	private function _checkConnection()
	{
		$this->_connected = false;
		
		// send ping:
		$data = 'ping?';
		@fwrite($this->_socket, $this->_hybi10Encode($data, 'ping', true));
		$response = @fread($this->_socket, 300);
		if(empty($response))
		{			
			return false;
		}
		$response = $this->_hybi10Decode($response);
		if(!is_array($response))
		{			
			return false;
		}
		if(!isset($response['type']) || $response['type'] !== 'pong')
		{			
			return false;
		}
		$this->_connected = true;
		return true;
	}
	
	public function disconnect()
	{
		if ($this->_checkConnection) {
			$this->_sendData("\x00","close");
		}
		$this->_connected = false;
		is_resource($this->_socket) and fclose($this->_socket);
	}

	private function _sendData($data, $type = 'text', $masked = true)
	{
		if($this->_connected === false)
		{
			trigger_error("Not connected", E_USER_WARNING);
			return false;
		}
		if( !is_string($data)) {
			trigger_error("Not a string data was given.", E_USER_WARNING);
			return false;		
		}
		if (strlen($data) == 0)
		{
			return false;
		}
		$res = @fwrite($this->_socket, $this->_hybi10Encode($data, $type, $masked));		
		if($res === 0 || $res === false)
		{
			return false;
		}		
		$output = stream_get_line($this->_socket,10240,"}")."}";
		$start = strpos($output,"{");
		$output = substr($output,$start,strlen($output) - $start);
		$output = trim($output,"\r\n\x00");
		$this->response = $output;
		return true;
	}
		
	private function _generateRandomString($length = 10, $addSpaces = true, $addNumbers = true)
	{  
		$characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"ยง$%&/()=[]{}';
		$useChars = array();
		// select some random chars:    
		for($i = 0; $i < $length; $i++)
		{
			$useChars[] = $characters[mt_rand(0, strlen($characters)-1)];
		}
		// add spaces and numbers:
		if($addSpaces === true)
		{
			array_push($useChars, ' ', ' ', ' ', ' ', ' ', ' ');
		}
		if($addNumbers === true)
		{
			array_push($useChars, rand(0,9), rand(0,9), rand(0,9));
		}
		shuffle($useChars);
		$randomString = trim(implode('', $useChars));
		$randomString = substr($randomString, 0, $length);
		return $randomString;
	}
	
	private function _hybi10Encode($payload, $type = 'text', $masked = true)
	{
		$frameHead = array();
		$frame = '';
		$payloadLength = strlen($payload);
		
		switch($type)
		{		
			case 'text':
				// first byte indicates FIN, Text-Frame (10000001):
				$frameHead[0] = 129;				
			break;			
		
			case 'close':
				// first byte indicates FIN, Close Frame(10001000):
				$frameHead[0] = 136;
			break;
		
			case 'ping':
				// first byte indicates FIN, Ping frame (10001001):
				$frameHead[0] = 137;
			break;
		
			case 'pong':
				// first byte indicates FIN, Pong frame (10001010):
				$frameHead[0] = 138;
			break;
		}
		
		// set mask and payload length (using 1, 3 or 9 bytes) 
		if($payloadLength > 65535)
		{
			$payloadLengthBin = str_split(sprintf('%064b', $payloadLength), 8);
			$frameHead[1] = ($masked === true) ? 255 : 127;
			for($i = 0; $i < 8; $i++)
			{
				$frameHead[$i+2] = bindec($payloadLengthBin[$i]);
			}
			// most significant bit MUST be 0 (close connection if frame too big)
			if($frameHead[2] > 127)
			{
				$this->close(1004);
				return false;
			}
		}
		elseif($payloadLength > 125)
		{
			$payloadLengthBin = str_split(sprintf('%016b', $payloadLength), 8);
			$frameHead[1] = ($masked === true) ? 254 : 126;
			$frameHead[2] = bindec($payloadLengthBin[0]);
			$frameHead[3] = bindec($payloadLengthBin[1]);
		}
		else
		{
			$frameHead[1] = ($masked === true) ? $payloadLength + 128 : $payloadLength;
		}
		// convert frame-head to string:
		foreach(array_keys($frameHead) as $i)
		{
			$frameHead[$i] = chr($frameHead[$i]);
		}
		if($masked === true)
		{
			// generate a random mask:
			$mask = array();
			for($i = 0; $i < 4; $i++)
			{
				$mask[$i] = chr(rand(0, 255));
			}
			
			$frameHead = array_merge($frameHead, $mask);			
		}						
		$frame = implode('', $frameHead);
		// append payload to frame:
		$framePayload = array();	
		for($i = 0; $i < $payloadLength; $i++)
		{		
			$frame .= ($masked === true) ? $payload[$i] ^ $mask[$i % 4] : $payload[$i];
		}
		return $frame;
	}
	
	private function _hybi10Decode($data)
	{
		$payloadLength = '';
		$mask = '';
		$unmaskedPayload = '';
		$decodedData = array();
		
		// estimate frame type:
		$firstByteBinary = sprintf('%08b', ord($data[0]));		
		$secondByteBinary = sprintf('%08b', ord($data[1]));
		$opcode = bindec(substr($firstByteBinary, 4, 4));
		$isMasked = ($secondByteBinary[0] == '1') ? true : false;
		$payloadLength = ord($data[1]) & 127;		
		
		switch($opcode)
		{
			// text frame:
			case 1:
				$decodedData['type'] = 'text';				
			break;
		
			case 2:
				$decodedData['type'] = 'binary';
			break;
			
			// connection close frame:
			case 8:
				$decodedData['type'] = 'close';
			break;
			
			// ping frame:
			case 9:
				$decodedData['type'] = 'ping';				
			break;
			
			// pong frame:
			case 10:
				$decodedData['type'] = 'pong';
			break;
			
			default:
				return false;
			break;
		}
		
		if($payloadLength === 126)
		{
		   $mask = substr($data, 4, 4);
		   $payloadOffset = 8;
		   $dataLength = bindec(sprintf('%08b', ord($data[2])) . sprintf('%08b', ord($data[3]))) + $payloadOffset;
		}
		elseif($payloadLength === 127)
		{
			$mask = substr($data, 10, 4);
			$payloadOffset = 14;
			$tmp = '';
			for($i = 0; $i < 8; $i++)
			{
				$tmp .= sprintf('%08b', ord($data[$i+2]));
			}
			$dataLength = bindec($tmp) + $payloadOffset;
			unset($tmp);
		}
		else
		{
			$mask = substr($data, 2, 4);	
			$payloadOffset = 6;
			$dataLength = $payloadLength + $payloadOffset;
		}	
		
		if($isMasked === true)
		{
			for($i = $payloadOffset; $i < $dataLength; $i++)
			{
				$j = $i - $payloadOffset;
				if(isset($data[$i]))
				{
					$unmaskedPayload .= $data[$i] ^ $mask[$j % 4];
				}
			}
			$decodedData['payload'] = $unmaskedPayload;
		}
		else
		{
			$payloadOffset = $payloadOffset - 4;
			$decodedData['payload'] = substr($data, $payloadOffset);
		}
		
		return $decodedData;
	}	
}