<?php
require_once('./js/log4php/Logger.php');
require_once('./paths.php');
require_once('./MYDB.php');

class RestoreCache {
	private $log;
	private $db;
	private $cache = null; //predis
	public function __construct(){
		
		global $redis_host;
		global $redis_port;
		global $redis_scheme;
		global $host;

          $this->log = Logger::getLogger("RestoreCache");
           Logger::configure('./js/log4php/log4php.xml');	
if(class_exists("Predis\Client")){

                        try {
//todo changed timeout from 0 to -1 
                        $this->cache = new Predis\Client(array("scheme" => $redis_scheme,"host" => $redis_host,"port" => $redis_port,"read_write_timeout" => -1));
                                $this->log->info("redis host: ".$redis_host." and redis port: ".$redis_port);
                        } catch(Exception $e) {
                                $this->log->error("Error connecting to Redis server: ".$e->getMessage());
                                $this->cache = null;
                        }
                }
        else{
            $this->log->info("cache does not exist"); //predis
                        exit;
        }


	}

public function restore() 
{

//first restore numbers 

 $backupKeys=$this->cache->hkeys('STATS_NUMBERS_BACKUP');
 $this->log->info("Restoring  Stat Numbers...");

for($x=0;$x<count($backupKeys);$x++)
{
	$key=$backupKeys[$x];
	$value=$this->cache->hget('STATS_NUMBERS_BACKUP',$key);
	$this->cache->hset('STATS_NUMBERS',$key,$value); }

//now promote all other entries
 $keys = $this->cache->keys("*");
 
$this->log->info("Restoring data queries...");
$this->log->info("*******************************************");

 for($x=0;$x<count($keys);$x++) {

if ((strpos($keys[$x],'chart')===false)&&(strpos($keys[$x],'table')===false)&&(strpos($keys[$x],'STATS')===false) )
{
 try{
$query = $this->cache->hget($keys[$x],'query');
$persistent= $this->cache->hget($keys[$x],'persistent');

if($query!=null)
{
                                   
                                                $fetchMode = $this->cache->hget($keys[$x], 'fetchMode');
                                                $shadowResults = $this->cache->hget($keys[$x],'shadow');
                                                $result = $this->cache->hget($keys[$x], 'results');
                                                $backup = $this->cache->hget($keys[$x], 'backup');
 
 $this->cache->hmset($keys[$x],array("results" =>$backup,"query" =>$query,"persistent" =>$persistent,"shadow" =>$shadowResults,"fetchMode" =>$fetchMode,"backup" =>$backup)); 
$this->log->info("Restored ".$keys[$x]);


}

}//catch
catch(Exception $e) {

$this->log->error('Error : '.$e->getMessage());

}
        }
 else
{ $this->log->info("Ignoring chart key: ".$keys[$x]); }
}

$this->cache->quit();

$this->log->info("Done! ");
	}
}


?>