<?php

/**
 * 根对象
 * @name Lib_Utils
 * @package Lib.Utils
 * @since 1.0
 */
class Lib_Utils
{

    /**
     * SqlMap 路径
     *
     * @return String
     */
    public static function sqlMapPath ()
    {
        return realpath(dirname(dirname(__FILE__)) . DIRECTORY_SEPARATOR . 'SqlMap');
    }

    /**
     * 结果数据
     *
     * @param $code Integer 状态码
     * @param $data mixed 数据
     * @param $message String 数据信息Tag
     * @return json      
     */
    public static function result($code, $message = null, $data = null)
    {
        $dataString = json_encode($data);
        return json_encode(array(
        	'code' => $code, 
        	'message' => $message, 
        	'data' => $data, 
        	'md5' => md5($dataString)
        ));
    }

    /**
     * 返回json格式结果
     *
     * @param $data mixed
     * @return String
     */
    public static function toJson ($data)
    {
        return json_encode($data);
    }

    /**
     * 返回xml格式结果
     *
     * @param $data mixed
     * @return String
     */
    public static function toXml ($data)
    {
        return $data;
    }

    /**
     * 转码UID
     *
     * @param $uid integer
     * @return string
     */
    public static function uid_encode ($uid)
    {
        return base_convert(intval($uid) + 10000, 10, 16);
    }

    /**
     * 解码UID
     *
     * @param $sid string
     * @return integer
     */
    public static function uid_decode ($sid)
    {
        return base_convert($sid, 16, 10) - 10000;
    }

    /**
     * 编码邀请代码
     *
     * @param $invite_id integer
     * @return string
     */
    public static function invite_encode ($invite_id)
    {
        return self::uid_encode($invite_id);
    }

    /**
     * 解码邀请代码
     *
     * @param $invite_code string
     * @return integer
     */
    public static function invite_decode ($invite_code)
    {
        return self::uid_decode($invite_code);
    }

    /**
     * 未知编码
     *
     * @param $uid Integer
     * @return String
     */
    public static function x_uid_hash ($uid)
    {
        return substr(md5($uid . "yoho"), 10, 8);
    }

    /**
     * session key 组合
     * 原：keyGen方法
     *
     * @param $uid Integer
     * @return Sring
     */
    public static function getSessionKey ($uid)
    {
        $rat = "thieve";
        $better_token = substr(md5(uniqid(mt_rand(), true)), 0, 16); // 16
        $uid_token = sprintf("%08s", base_convert($uid, 10, 16)); // 8
        $time_token = substr(md5(microtime(true)), 0, 4); // 4
        $sig_token = substr(md5($better_token . $uid_token . $time_token . $rat), 0, 4); // 4
        $session_key = $uid_token . $better_token . $time_token . $sig_token;
        return $session_key;
    }

    /**
     * 获取退出key 串
     * 原：tokenGen 方法
     *
     * @return String
     */
    public static function getUniqId ()
    {
        return md5(uniqid(mt_rand(), true) . "yoho.cn or yohobuy.com?");
    }

    /**
     * 计算年龄
     *
     * @param $birthday string 1982-02-04
     */
    public static function calculateAge ($birthday)
    {
        $iDt = strtotime($birthday);
        if ($iDt)
        {
            $aDt = getdate($iDt);
            if ($aDt['year'] < 1900)
                return false;
            $iAge = date('Y') - $aDt['year'];
            $iAge -= date('n') < $aDt['mon'] ? 1 : 0;
            $iAge = $iAge < 1 ? 1 : $iAge;
            return $iAge;
        }
        else
            return false;
    }

    public static function generateClientSignature ($paramsArray, $secret)
    {
        $str = '';
        
        ksort($paramsArray);
        // Note: make sure that the signature parameter is not already included
        // in
        // $params_array.
        foreach ($paramsArray as $k => $v)
        {
            $str .= "$k=$v";
        }
        $str .= $secret;
        
        return md5($str);
    }

    public static function arrayValue ($array, $key)
    {
        return isset($array[$key]) ? $array[$key] : '';
    }

    public static function checkIfArrayConsistsValue ($array, $key, $value)
    {
        return is_array($array) && array_key_exists($key, $array) && $array[$key] == $value;
    }

    public static function checkIfArrayIsEmpty ($array)
    {
        return is_array($array) && empty($array);
    }

    public static function sqlInStringFromArray ($aIds)
    {
        return "'" . implode("','", $aIds) . "'";
    }

    /**
     * getHashDir hash string split 3层
     *
     * @param $str string
     * @static
     *
     *
     * @access public
     * @return 图片的hash目录
     */
    public static function getHashDir ($str)
    {
        return substr($str, 0, 2) . DIRECTORY_SEPARATOR . substr($str, 2, 2) . DIRECTORY_SEPARATOR . substr($str, 4, 2) . DIRECTORY_SEPARATOR;
    }

    /**
     * getUserDir to expired
     *
     * @param $userid int
     * @static
     *
     *
     * @access public
     * @return string
     */
    public static function getUserDir ($userid)
    {
        $parts = str_split($userid, 3);
        $user_dir = implode(DIRECTORY_SEPARATOR, $parts);
        return $user_dir;
    }

    /**
     * 得到当前请求链接
     *
     * @return string
     */
    public static function getCurrentUrl ()
    {
        return $_SERVER['REQUEST_URI'];
    }

    /**
     * 根据数字最后位数散列
     *
     * @param $int Integer
     * @param $hashNum Integer 位数
     * @param $step Integer 步长
     * @return String
     */
    public static function hashLast ($int, $hashNum = 100, $step = 3)
    {
        $len = strlen($int);
        $hash = 0;
        if ($len >= $step)
        {
            $hash = (int) abs(substr($int, - $step));
            if ($hash >= $hashNum)
            {
                $hash = (int) abs(substr($int, - ($step - 1)));
            }
        }
        else
        {
            $hash = (int) $int;
        }
        if ($hash < 10)
        {
            $hash = "0" . $hash;
        }
        return $hash;
    }

    /**
     * 获取Cookie
     *
     * @param $name String
     * @param $default String
     * @return String
     */
    public static function getCookie ($name, $default = null)
    {
    	if (null === $name)
    	{
    		return $_COOKIE;
    	}
    	
    	return isset($_COOKIE[$name]) ? $_COOKIE[$name] : $default;
    }
    
	/**
	 * 获取Session
	 *
	 * @param string $namespace  命名空间
	 * @param string $name  session名称: 默认为null, 表示所有
	 * @param mixed $default  默认返回值
	 * @return mixed
	 */
	public static function getSession($namespace, $name = null, $default = null)
	{
		isset($_SESSION) || session_start();
		
		if (null === $name)
		{
			return $_SESSION[$namespace];
		}
		
		return isset($_SESSION[$namespace][$name]) ? $_SESSION[$namespace][$name] : $default;
	}

    /**
     * 解码从数据库得到的目的
     *
     * @param $purpose integer
     * @return array there are 5 keys:1, 2, 4, 8, 16
     */
    public static function purposeDecode ($purpose)
    {
        $return = array();
        $purpose = base_convert($purpose, 10, 2);
        $purpose = sprintf("%05d", $purpose);
        $return["1"] = intval(substr($purpose, 4, 1));
        $return["2"] = intval(substr($purpose, 3, 1));
        $return["4"] = intval(substr($purpose, 2, 1));
        $return["8"] = intval(substr($purpose, 1, 1));
        $return["16"] = intval(substr($purpose, 0, 1));
        return $return;
    }

    /**
     * 编码从客户端提交的purpose数据
     *
     * @param $purpose array there must be 5 keys:1, 2, 4, 8, 16
     * @return integer
     */
    public static function purposeEncode ($purpose)
    {
        $ary = array();
        while (($v = array_pop($purpose)) !== null)
        {
            $ary[] = $v;
        }
        $purpose = implode('', $ary);
        return base_convert($purpose, 2, 10);
    }

    /**
     * 得到无符号CRC32值，并模
     *
     * @param $k varible
     * @param $mod integer
     * @return integer
     */
    public static function getUnsignedCrc32 ($k, $mod = 1)
    {
        return (int) sprintf("%u\n", crc32($k)) % $mod;
    }

    /**
     * 反相取色
     *
     * @param $color string
     * @return string
     */
    public static function invertColor ($color)
    {
        $r = intval(substr($color, 0, 2), 16);
        $g = intval(substr($color, 2, 2), 16);
        $b = intval(substr($color, 4, 2), 16);
        return str_pad(dechex(255 - $r), 2, '0') . str_pad(dechex(255 - $g), 2, '0') . str_pad(dechex(255 - $b), 2, '0');
    }

    /**
     * 反相高光取色
     *
     * @param $color string
     * @return string
     */
    public static function invertColorHighLight ($color)
    {
        return intval($color, 16) > 8388608 ? '000000' : 'FFFFFF';
    }

    public static function between ($val, $r1, $r2)
    {
        if ($val >= $r1 && $val <= $r2)
        {return true;}
        if ($val >= $r2 && $val <= $r1)
        {return true;}
        return false;
    }

    /**
     * close all open xhtml tags at the end of the string
     *
     * @param $html string
     * @return string
     * @author Milian Wolff
     */
    public static function closetags ($html)
    {
        if (! function_exists('tidy_repair_string') || empty($html))
            return $html;
        $str = tidy_repair_string($html, array('output-xhtml' => true), 'utf8');
        $str = tidy_parse_string($str, array('output-xhtml' => true), 'utf8');
        $s = '';
        $nodes = @tidy_get_body($str)->child;
        if (! is_array($nodes))
        {
            $returnVal = 0;
            return $s;
        }
        foreach ($nodes as $n)
        {
            $s .= $n->value;
        }
        return $s;
    }

    /**
     * 获取不重复随机数
     *
     * @param $min Integer 最小值
     * @param $max Integer 最大值
     * @param Integer | String $prefix 前缀
     */
    public static function randNum ($min = 1000, $max = 99999, $prefix = 0)
    {
        $tmpNum = $orderNum = array();
        $len = strlen($max);
        $tMin = $oMin = $min;
        $oMax = $max;
        for ($tMin; $tMin <= $max; ++ $tMin)
        {
            $tmpNum[$tMin] = $tMin;
        }
        for ($oMin; $oMin <= $max; ++ $oMin)
        {
            $randNum = mt_rand($oMin, $oMax);
            $rands = sprintf("%0" . $len . "d", $tmpNum[$randNum]);
            $orderNum[$rands] = $prefix;
            -- $oMax;
        }
        return $orderNum;
    }
    /**
     * 是否是邮箱格式
     * @param string $str
     * @return boolean
     */
    public static function isEmail ($str)
    {
        $str = strtolower($str);
        if (preg_match("/^[a-z0-9_\-]+(\.[_a-z0-9\-]+)*@([_a-z0-9\-]+\.)+([a-z]{2}|aero|arpa|biz|com|coop|edu|gov|info|int|jobs|mil|museum|name|nato|net|org|pro|travel)$/", $str))
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    
    /**
     * 根据输入的网页版，IPHONE，ANDROID…输入网页端显示的文字
     * 
     * @param string $agent
     * @return string
     */
    public static function agentToPlatform($agent) 
    {
        if (is_string ( $agent )) 
        {
            if (stripos( $agent, 'Android') !== false) 
            {
                return "android";
            }
            if (stripos ( $agent, 'iPad' ) !== false) 
            {
                return "iphone";
            }
            if (stripos ( $agent, 'iPod touch' ) !== false) 
            {
                return "iphone";
            }
            if (stripos ( $agent, 'iPhone' ) !== false) 
            {
                return "iphone";
            }
        }
        return "web";
    }
    
    /**
     * 格式化价格
     * 
     * @param integer $price  价格
     * @return string
     */
    public static function formatPrice($price)
    {
    	if (is_numeric($price))
    	{
    		$price = $price / 100;
    		if (!is_int($price))
    		{
    			$price = number_format($price, 2, '.', '');
    			//新版本需要去掉后缀无用的0
    			$price = Util_StringHelper::del0($price);
    		}
    	}
    	else
    	{
    		$price = 0;
    	}
    	
    	return $price;
    }
    
}