<?php

class cache {
	public $token = "";
	public $bypassCache;

	private $db;

	private $dbnmr;
	private $dbpagecache;
	private $db2nd;

	public function __construct($rconnect, $rdb){
		$this->db = new Redis();	
		$this->bypassCache=false;

		try {
			$this->db->connect($rconnect);
		} catch (Exception $e) {
			return $e->getMessage();
		}
		try {
			$this->db->ping();
		} catch (Exception $e) {
			return $e->getMessage();
		}
		try {
			$this->db->select($rdb);
		} catch (Exception $e) {
			return $e->getMessage();
		}
		$this->dbnmr = $rdb;
		$this->dbpagecache = PAGECACHE_DB;
		$this->db2nd = SECOND_CACHE;
	}

	public function check(){
		try {
			return $this->db->ping();
		} catch (Exception $e) {
			return $e->getMessage();
		}
	}

	public function setKey($key, $value, $ttl = null){
		$this->db->set($key, $value, $ttl);
	}

	public function getValue($key){
		return $this->db->get($key);
	}

	public function getToken($data, $append = ""){
		$this->token = CACHEPREFIX . $append . md5(strtolower($data));
		return $this->token;
	}
	
	public function exists($key){
		return $this->db->exists($key);
	}

	public function delete($key){
		return $this->db->delete($key);
	}

	public function del($key){
		return $this->db->delete($key);
	}

	public function setPageCache($key, $value, $ttl = 3600){
		$this->db->select( $this->dbpagecache );
		$this->db->set( $key, $value, $ttl );
		$this->db->select( $this->dbnmr );
	}

	public function getPageCache($key){
		$this->db->select( $this->dbpagecache );
		$data = $this->db->get( $key );
		$this->db->select( $this->dbnmr );
		return $data;
	}

	public function existsPageCache($key){
		$this->db->select( $this->dbpagecache );
		$data = $this->exists( $key );
		$this->db->select( $this->dbnmr );
		return $data;
	}

	public function flushPageCache(){
		$this->db->select( $this->dbpagecache );
		$this->db->flushDB();
		$this->db->select( $this->dbnmr );
	}

	public function flush($token = null){
		$this->flushPageCache();
		if ( is_null($token) )
			return $this->db->flushDB();
		else
			return $this->db->delete($token);
	}

	public function flushAll(){
		$this->db->flushDB();
		$this->flushPageCache();
		$this->flush2();
	}

	public function set2($key, $value, $ttl = null){
		$this->db->select( $this->db2nd );
		$this->db->set($key, $value, $ttl);
		$this->db->select( $this->dbnmr );
	}

	public function get2($key){
		$this->db->select( $this->db2nd );
		$data = $this->db->get($key);
		$this->db->select( $this->dbnmr );
		return $data;
	}

	public function exists2($key){
		$this->db->select( $this->db2nd );
		$data = $this->db->exists($key);
		$this->db->select( $this->dbnmr );
		return $data;
	}

	public function flush2($token = null){
		$this->db->select( $this->db2nd );
		if ( is_null($token) )
			$data = $this->db->flushDB();
		else
			$data = $this->db->delete($token);

		$this->db->select( $this->dbnmr );
		$this->flushPageCache();
		return $data;
	}
}