<?php
/**
 * Created by 北京捷讯佳音.
 * User: sam
 * Date: 2019/2/15
 * Time: 11:17
 */

namespace app\index\controller;

use think\Controller;
use think\response\Json; 

class Base extends Controller
{
    // 初始化
    public function _initialize()
    {
        $para = input('param.');
        if (empty($para)) {
            return json(['code' => 302, 'msg' => '请求失败.']);
        }
        $return = $this->_checkAccessTokenIsValid($para);

        if ($return['code'] != 200) {
            return json($return);
        }
    }


    /**
     * 验证令牌.
     * @param array $param 参数集合
     * @return array
     */
    private static function _checkAccessTokenIsValid(&$param)
    {
        if (empty($param['access_token'])) {
            return ['code' => 400, 'msg' => 'access_token不能为空.'];
        }

        if (empty($param['type'])) {
            return ['code' => 450, 'msg' => 'type不能为空.'];
        }

        if($param['type'] == 'kf') {
            $result = db('users')->field('id,user_name,sex,user_avatar,access_token,expire_time')
                ->where(['access_token' => $param['access_token']])
                ->find();
            if (empty($result)) {
                return ['code' => 450, 'msg' => 'access_token不存在.'];
            }

            if ($result['access_token'] != $param['access_token']) {
                return ['code' => 450, 'msg' => 'access_token错误.'];
            }

            if ($result['expire_time'] < time()) {
                return ['code' => 450, 'msg' => 'access_token已过期.'];
            }

            $param['user'] = [
                'uid'         => "KF".$result['id'],
                'user_name'   => $result['user_name'],
                'sex'        => $result['sex'],
                'avatar_url' => $result['user_avatar']
            ];
        }else{
            $userInfo = $param['access_token'];
            if(is_string($userInfo)){
                $userInfo = json_decode($userInfo,true);
            }
            $param['user'] = $userInfo['user'];
        }
        unset($param['access_token']);

        return ['code' => 200, 'msg' => '验证成功.'];
    }
}