<?php

namespace util {
	class HttpGetRequest{
		
		private $toFile;
		private $reqHeaders;
		private $reqCookies;
		private $reqParams;
		private $timeout;
		private $isSecure;
		private $userName;
		private $password;
		private $post;
		private $postData;
	
		private $resHeaders;
		private $resCookies;
		private $body;
			
		public function __construct($toFile = false){
			$this->toFile = $toFile;;
			$this->reqHeaders=array();
			$this->reqCookies=array();
			$this->reqParams=array();
		 	$this->timeout=null;
		 	$this->isSecure=false;
		 	$this->resHeaders=null;
		 	$this->resCookies=null;
		 	$this->body=null;
		 	$this->post = false;
			
		}
		public function setToFile($toFile){
		
			$this->toFile = $toFile;	
		}
		public function setPostData($data){
			$this->postData = $data;
			$this->post = 1;	
		}
		
		public function setHeaders($headers){
			$this->reqHeaders=$headers;
		}
		
		public function setCookies($cookies){
			$this->reqCookies=$cookies;
		}
		
		public function setParams($params){
			$this->reqParams=$params;
		}
		
		public function setTimeout($timeout){
			$this->timeout=$timeout;
		}
		
		public function useSSL($userName, $password){
			$this->isSecure=true;
			$this->userName=$userName;
			$this->password=$password;
		}
		
	/*@desc for initiating http get request
	*@access public
	*@param url of requesting host
	*@return true if all is OK, false if thereare errors
	*/
		
		public function request($url){
			$curl = \curl_init();
			$headers=$this->reqHeaders;
	
			foreach($this->reqCookies as $key => $value){
				$headers["Cookie"]="$key=$value";
			}
			
			$reqHeaders=array();
			foreach($headers as $key => $value){
				$reqHeaders[]="$key: $value";
			}
	
			curl_setopt($curl, CURLOPT_HTTPHEADER, $reqHeaders);
			curl_setopt($curl, CURLOPT_HEADER, TRUE);
	
			// set URL
			if($this->reqParams && count($this->reqParams)>0){
				$url.="?";
				foreach($this->reqParams as $key => $value){
					$url.=urlencode($key)."=".urlencode($value)."&";
				}		
			}
			curl_setopt($curl, CURLOPT_URL, $url);
			
			if($this->isSecure){
				curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
				curl_setopt($curl, CURLOPT_USERPWD, $this->userName.":".$this->password);  
				curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
			}
			if($this->post){
				
				curl_setopt($curl, CURLOPT_POST, 1); 
				curl_setopt($curl, CURLOPT_POSTFIELDS, $this->postData);
			}
			
			if(!$this->toFile){
				// Write result to variable
				
				curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
				
			}
			else{
				
				//write result to the file
				$fp = fopen($this->toFile, 'w');
				curl_setopt($curl, CURLOPT_HEADER, 0);
				curl_setopt($curl, CURLOPT_FILE, $fp);
				
			}
		
			// Set timeout
			if ($this->timeout){
				curl_setopt($curl, CURLOPT_TIMEOUT, $this->Timeout);
			}
	
			
			// write content in $doc
			$response = curl_exec($curl);
			
	
			// close connection
			curl_close($curl);
			
			if($this->toFile){
				fclose($fp);
				return $response;
			}
			
			// Get HTTP Status code from the response
			$status_code = array ();
			preg_match('/\d{3}/', $response, $status_code);
			// Check the HTTP Status code
			if($status_code[0]==200){
				$bodyIndex=strpos($response, "\n\r\n");
				
				//  Setting response body
				$this->body=substr($response, $bodyIndex+3);
				$head=substr($response, 0, $bodyIndex-1);
				$headers=array();
				preg_match_all("|\n.+|", $head, $headers);
				
				//  Setting response headers
				for($i=0; $i<count($headers[0]); $i++){
					$headerChuncks=array();
					preg_match('/(.+?):\s*(.+)/', trim($headers[0][$i]), $headerChuncks);
					$this->resHeaders[$headerChuncks[1]]=$headerChuncks[2];
					
				// Setting cookies
					if($headerChuncks[1]=="Set-Cookie"){
						$cookieIndex=strpos($headerChuncks[2], "=");
						$cookieLastIndex=strpos(substr($headerChuncks[2], $cookieIndex+1), ";");
						$this->resCookies[substr($headerChuncks[2], 0, $cookieIndex)]=substr($headerChuncks[2], $cookieIndex+1, $cookieLastIndex);
					}
				}
				return true;
			}		
			
			return false;		
		}
		
		public function getHeaders(){
			return $this->resHeaders;
		}
		
		public function getCookies(){
			return $this->resCookies;
		}
		
		public function getBody(){
			return $this->body;
		}
		
			
	}
}