<?php
/*
 * Manage data in cache
 * 
 * author: xuchangzhang
 * 
 * */

require_once(ONU_ROOT . 'application/lib/data/Base.class.php');

class CacheMg{
	
	public static $Key_PromoteUserCnt    = 'CACHE_KEY_PROMOTE_USER_CNT';
	public static $Key_UidIpPromCntLimit = 'CACHE_KEY_UID_IP_PROMOTE_CNT_LIMIT';
	private static $memcache;
	private static $db;
	
	private static function getCacheIns(){
		
		if(!isset(self::$memcache)){
			global  $_ONU_CONFIG;
			self::$memcache = new Mcache($_ONU_CONFIG['_memcache_conf']);
		}
		return 	self::$memcache;
	}
	
	private function getDbIns(){
		
		if(!isset(self::$db)){
			global  $_ONU_CONFIG;
			self::$db = new MysqlHandler($_ONU_CONFIG['_db_conf']);
		
		}
		return self::$db;
	}
	
	public static function get($key){
		$cache = self::getCacheIns();
		return $cache->get($key);
	}
	
	public static function set($key,$val){
		$cache = self::getCacheIns();
		return $cache->set($key,$val);
	}
	
	public static function getPromoteUserCnt($uid){
		
		$cache      = self::getCacheIns();
		$userCntSet = $cache->get(self::$Key_PromoteUserCnt);
		
		if(empty($userCntSet)){
			$userCntSet = array();
		}
		else{
			$userCntSet = json_decode($userCntSet,true);
		}
		
		$uNumber = $userCntSet[$uid];
		// no data in cache get from db
		if(empty($uNumber)){
			$res = self::getPromoteUserCntDB($uid);
			$uNumber = (is_array($res))? $res[0]['cnt'] : 0;
			// update data to cache
			$userCntSet[$uid] = $uNumber;
			$cache->set(self::$Key_PromoteUserCnt, json_encode($userCntSet));
		}
				
		return $uNumber;
	}
	
	private static function getPromoteUserCntDB($uid){
		$db  = self::getDbIns();
		$effectiveLevel = EFFECTIVE_PLAYER_LEVEL;
		$sql = "select count(id) cnt from onu_promote where uid='$uid' and player_grade =>$effectiveLevel;";
		return $db->query($sql);
	}
	
	// set method must be called after get method
	public static function setPromoteUserCnt($uid,$number){
		$cache      = self::getCacheIns();
		$userCntSet = $cache->get(self::$Key_PromoteUserCnt);
		$userCntSet = json_decode($userCntSet,true);
		if(is_array($userCntSet)){
			$userCntSet[$uid] = $number;
			$cache->set(self::$Key_PromoteUserCnt, json_encode($userCntSet));
		}
	}
	
	//
	private static function getDayTimeKey_BJ(){
		date_default_timezone_set("Asia/Chongqing");
		$today = date("Ymd");
		return strtotime($today);	
	}
	
	//
	// one ip can registe at most 5 users for one promote user in 3 days
	//
	public static function setUidIpPrmoteCnt_Plus($uid,$ip,$num){
		
		$cache   = self::getCacheIns();
		$timeKey = self::getDayTimeKey_BJ();
		$itemKey = "$uid-$ip";
		$dataKey = '';
		
		$dataSet = $cache->get(self::$Key_UidIpPromCntLimit);
		$dataSet = json_decode($dataSet, true);
		
		if(empty($dataSet)) $dataSet = array();

		// set time period key
		if(count($dataSet) == 0){
			$dataSet[$timeKey] = array();
			$dataKey = $timeKey;
		}
		
		// set new key and clear the first key
		$oldPeriodKey = NULL;
		foreach($dataSet as $key=>$val){
			
			// over 3 days
			if( ($timeKey - $key) >= 259200){
				$oldPeriodKey = $key;
			}
			else{
				$dataKey = $key;
			}
			break;
		}
		
		if(!empty($oldPeriodKey)){
			$dataSet[$timeKey] = array();
			$dataKey = $timeKey;
			unset($dataSet[$oldPeriodKey]);
		}
		
		// set item value
		if(empty($dataSet[$dataKey][$itemKey])){
			$dataSet[$dataKey][$itemKey] = $num;
		}
		else{
			$dataSet[$dataKey][$itemKey] ++;
		}
		// update cache
		$cache->set(self::$Key_UidIpPromCntLimit,json_encode($dataSet));				
	}
	
	public static function getUidIpPrmoteCnt($uid,$ip){
		
		$cache   = self::getCacheIns();
		$itemKey = "$uid-$ip";
		$dataKey = '';
		
		$dataSet = $cache->get(self::$Key_UidIpPromCntLimit);
		$dataSet = json_decode($dataSet, true);
		
		if(empty($dataSet)) return 0;
		
		foreach($dataSet as $key=>$val){
			$dataKey = $key;
		}
		
		return $dataSet[$dataKey][$itemKey];
	}

//Class end
}