<?php
namespace common\helpers;

use Yii;

class Utils
{
    public static function getTopDomain($hostInfo = '')
    {
        $hostInfo = $hostInfo ? $hostInfo : Yii::$app->getRequest()->getHostInfo();
        $host = parse_url($hostInfo, PHP_URL_HOST);
        $hostArr = explode('.', $host);
        $hostArr = array_reverse($hostArr);
        if (count($hostArr) >= 2) {
            return "{$hostArr[1]}.{$hostArr[0]}";
        } else {
            return $host;
        }
    }

    public static function formatFloatOrInt($number, $decimals = 2)
    {
        if (!is_numeric($number)) {
            return $number;
        }
        if (intval($number) == $number) {
            return intval($number);
        } else {
            return number_format($number, $decimals, '.', '');
        }
    }

    /**
     * 获取客户端IP地址
     * @param integer $type 返回类型 0 返回IP地址 1 返回IPV4地址数字
     * @return mixed
     */
    public static function getClientIp($type = 0)
    {
        $type = $type ? 1 : 0;
        static $ip = NULL;
        if ($ip !== NULL) return $ip[$type];
        if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
            $pos = array_search('unknown', $arr);
            if (false !== $pos) unset($arr[$pos]);
            $ip = trim($arr[0]);
        } elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
            $ip = $_SERVER['HTTP_CLIENT_IP'];
        } elseif (isset($_SERVER['REMOTE_ADDR'])) {
            $ip = $_SERVER['REMOTE_ADDR'];
        }
        // IP地址合法验证
        $long = sprintf("%u", ip2long($ip));
        $ip = $long ? array($ip, $long) : array('0.0.0.0', 0);
        return $ip[$type];
    }

    /**
     * 判断程序当前的运行环境，Env为ENVIRONMENT
     * @return string
     */
    public static function getEnv()
    {
        $env = 'prod';
        
        if (!isset(Yii::$app->params['environment']) || !is_array(Yii::$app->params['environment'])) {
            return $env;
        }

        if (isset($_SERVER['ENVIRONMENT']) && in_array($_SERVER['ENVIRONMENT'], Yii::$app->params['environment'])) {
            // 在web服务器定义的环境
            $env = $_SERVER['ENVIRONMENT'];
        } elseif (isset(Yii::$app->params['stbXcrmHost']) && static::getTopDomain() === static::getTopDomain(Yii::$app->params['stbXcrmHost'])) {
            // stb顶级域名跟线上的相同
            $hostInfo = Yii::$app->getRequest()->getHostInfo();
            $host = parse_url($hostInfo, PHP_URL_HOST);
            $hostArr = explode('.', $host);
            $hostArr = array_reverse($hostArr);
            if (count($hostArr) >= 4 && in_array($hostArr[2], Yii::$app->params['environment'])) {
                $env = $hostArr[2];
            }
        } elseif (isset(Yii::$app->params['rcXcrmHost']) && static::getTopDomain() === static::getTopDomain(Yii::$app->params['rcXcrmHost'])) {
            // rc顶级域名不同
            $env = 'rc';
        }
        
        return $env;
    }
    
    /**
     * 根据不同的环境返回不同的crm域名
     * @return string
     */
    public static function getCrmHostByEnv()
    {
        $host = Yii::$app->params['xcrmHost'];
        if (isset(Yii::$app->params['stbXcrmHost']) && static::getEnv() == 'stb') {
            $host = Yii::$app->params['stbXcrmHost'];
        } elseif (isset(Yii::$app->params['rcXcrmHost']) && static::getEnv() == 'rc') {
            $host = Yii::$app->params['rcXcrmHost'];
        }
        return $host;
    }
    
}