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

class RefreshCache {
	private $log;
	private $cache = null;

	public function __construct(){
		
		global $redis_host;
		global $redis_port;
		global $redis_scheme;
		
		global $host;

		$this->log = Logger::getLogger(__CLASS__);
		if(class_exists("Predis\Client")){
		
			try {
				
				$this->cache = new Predis\Client(array( 
					"scheme" => $redis_scheme,
					"host" => $redis_host,
        			"port" => $redis_port,
					"read_write_timeout" => 0));

				$this->log->info("redis host: ".$redis_host);
				$this->log->info("redis port: ".$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;
    	}
	}
	
	function refresh() {
	
		if($this->cache != null){ 
			$this->log->info("cache exists");
			
			$database = new MYDB();
			$database->doConnect($GLOBALS['schema_file']);
			
			$keys = $this->cache->keys("*");
			for($x=0;$x<count($keys);$x++) {
								
$pers=$this->cache->hget($keys[$x], 'persistent');

				if($pers=='true'||$pers=='1')
 {			
					if(($query = $this->cache->hget($keys[$x], 'query'))!=null) {
					
						$this->log->info("going to recalculate the results for key: ".$keys[$x]);
						$fetchMode = $this->cache->hget($keys[$x], 'fetchMode');
						$results = $database->doQueryNoCache($query, $fetchMode);
						$this->cache->hset($keys[$x], 'results', json_encode($results));
					}
  						
  				} else {
  					
  					$this->log->info("going to delete the key: ".$keys[$x]);
  					$this->cache->del($keys[$x]);
  				}
  			}
  			
  			$database->doDisconnect();
			
		} else {
			$this->log->info("cache does not exist");
		}
	}
}

$rc = new RefreshCache();
$rc->refresh();


?>