<?php


namespace app\api\controller;


use app\api\ErrorCode;

use app\BaseController;
use think\exception\HttpResponseException;
use think\exception\ValidateException;
use think\facade\Log;
use think\Response;

class Base
{

    protected $checkTokenOpen = false;


    public function __construct()
    {
        Log::record("---------------------------","info");
        Log::record($_SERVER['REQUEST_METHOD'] . '  ' . getUrl(), 'info');
        Log::record('REFERER  ' .(array_key_exists('HTTP_REFERER',$_SERVER)?$_SERVER['HTTP_REFERER']:""), 'info');
        Log::record('GET  ' . json_encode($_GET, JSON_UNESCAPED_UNICODE), 'info');
        Log::record('POST  ' . json_encode($_POST, JSON_UNESCAPED_UNICODE), 'info');
        Log::record('cookie  ' . json_encode($_COOKIE, JSON_UNESCAPED_UNICODE), 'info');
        Log::record('input  ' . json_encode(input('param.'), JSON_UNESCAPED_UNICODE), 'info');
        $this->checkApiSign();
        if($this->checkTokenOpen){
            $this->checkToken();
        }
    }


    /**
     * 获取token
     * @return array|mixed|string|null
     */
    protected  function getToken(){
        $token=null;
        if(!$token){
            //from header
            $token=request()->header("token");
        }
        if(!$token){
            //from url
            $token=input("token");
        }
        return $token;
    }

    /**
     * 检测token
     * token规则
     * token由base64编码，解码后分为密文、主键、过期时间（时间戳）三部分，用竖线|隔开
     */
    public function checkToken()
    {
        $token=$this->getToken();
        if(!$token){
            $this->error(ErrorCode::getError(13),13);
        }
        $tokerReal=base64_decode($token);
        $tokenArr=explode("|",$tokerReal);//拆分token

        if(count($tokenArr)!=3){
            $this->error(ErrorCode::getError(14),14);
        }
        //判断token有没有超时
        if(time()>$tokenArr[2]){
            $this->error(ErrorCode::getError(11),11);
        }
        //以下部分根据自己的业务实现

    }

    /**
     * 返回成功信息
     * @param $data
     * @param string $msg
     */
    public function success($data,$msg=""){

        $res=returnFormat(0,$msg,$data);

        Log::record("response:" . mb_substr(json_encode($res, JSON_UNESCAPED_UNICODE), 0, 1000) . ",code:0" , "debug");
        throw new HttpResponseException(Response::create($res,"json"));
    }

    /**
     * 简易错误提示
     * @param $code
     */
    public function errorSimple($code){
        $this->error(ErrorCode::getError($code),$code);
    }

    /**
     * 返回失败信息
     * @param $msg
     * @param int $code
     * @param array $data
     */
    public function error($msg,$code=999,$data=[]){
        $res=returnFormat($code,$msg,$data);
        Log::record("response:" . mb_substr(json_encode($res, JSON_UNESCAPED_UNICODE), 0, 1000) . ",code:" . $code, "debug");
        throw new HttpResponseException(Response::create($res,"json"));
    }

    /**
     * 自动校验
     * @param $class
     * @param $param
     */
    public function autoValid($class,$param){
        try {
            validate($class)->check($param);
        } catch (ValidateException $e) {
            // 验证失败 输出错误信息
            $this->error($e->getError());
        }
    }

    /**
     * 检查签名
     */
    public function checkApiSign(){

        $timestampLimit=20;
        $param = request()->param();

        $this->autoValid([
            "_timestamp"=>"require",
            "_sign"=>"require",
        ], $param);
        if(!($param["_timestamp"]>=time()-$timestampLimit*60 && $param["_timestamp"]<=time()+$timestampLimit*60)){
            $this->error("时间戳不合法，请刷新");
        }
        $sign=$param["_sign"];
        unset($param["_sign"]);
        ksort($param);

        $param['_timestamp'] = $param['_timestamp'];
        $secret=config("common.api_sign_secret");
        $signStr=stripslashes(json_encode($param,JSON_UNESCAPED_UNICODE).$secret);

        $sign2=md5($signStr);

        if($sign!==$sign2){
            $this->error("签名错误。".$signStr);
        }
    }
}