<?php


namespace app\controller\api\baidu;
use crmeb\basic\BaseController;
use think\facade\Cache;

class BaiduAi extends BaseController
{

    /**
     * @return mixed
     * 图像识别
     */
    public function baiduai()
    {
        $access_token=Cache::get('baiduai_access_token');//redis取token
        if(!$access_token){//没有 直接请求获得
            $grant_type='client_credentials';
            $client_id='tlxGbXSA0Y5RqHEmEGuSh0Y3';
            $client_secret='oXYLVoXUKLKOaXtKjrKOiZVuYyrKFcaP';
            $access_token=$this->access_token_baidu($grant_type,$client_id,$client_secret)['access_token'];//去请求token
            Cache::set('baiduai_access_token', $access_token['access_token'], $access_token['expires_in']);// 将取到的token存入redis方便下次使用
        }
        $image=$this->request->params(['image']);
        $image=$image['image'];
        if(empty($image)){
           return app('json')->fail('参数不正确');
        }
        $imageName = time().'1.png';
        if (strstr($image,",")){
            $image = explode(',',$image);
            $image = $image[1];
        }

        $path = "./public/shareimg";
        if (!is_dir($path)){ //判断目录是否存在 不存在就创建
            mkdir($path,0777,true);
        }
        $imageSrc=  $path."/". $imageName;  //图片名字

        file_put_contents($imageSrc, base64_decode($image));//返回的是字节数
        $returnimgurl=env('APP_URL').'/shareimg/'.$imageName;

        $scenes=["advanced_general"];
        $data=[
            'imgUrl'=>$returnimgurl,
            'scenes'=>$scenes,
        ];


        $data=json_encode($data);
        $header=[
            'Content-Type:'.'application/json;charset=utf-8',
        ];
        $url='https://aip.baidubce.com/api/v1/solution/direct/imagerecognition/combination?access_token='.$access_token;
        $data=$this->curl($url,$data,'post',$header);
        $data=json_decode($data,true);
        if(empty($data['result']['advanced_general']['result'])){
            return app('json')->fail('未获取到数据');
        }
        $data=array_column($data['result']['advanced_general']['result'],'keyword');

        $data=[
            'data'=>$data,
            'imgurl'=>$returnimgurl
        ];
        return app('json')->success($data);


    }
    /**
     * 删除 搜索的图片
     */
    public function deleteimg()
    {
        $url=$this->request->params(['url']);
        if(empty($url['url']))
            return app('json')->fail('未获取到参数');
        $url=$url['url'];
        $data=explode('shareimg/',$url);
        @unlink('./public/shareimg/'.end($data));
        return app('json')->success('ok');


    }
    /**
     * @param $grant_type
     * @param $client_id
     * @param $client_secret
     * @return mixed
     * 百度鉴权token
     */
    public function access_token_baidu($grant_type,$client_id,$client_secret)
    {
        $data=[
            'grant_type'=>$grant_type,
            'client_id'=>$client_id,
            'client_secret'=>$client_secret
        ];

        $url='https://aip.baidubce.com/oauth/2.0/token';
        $data=$this->curl($url,$data,'post','');
        return json_decode($data,true);

    }

    //curl 请求
    public function curl($url , $data=array(),$option,$header=''){

        $ch = curl_init();//
        if(!empty($header)){
            curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
            curl_setopt($ch, CURLOPT_HEADER, 0);//返回response头部信息
        }
        curl_setopt($ch, CURLOPT_URL, $url);//

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

        // POST数据
        if($option=='post'){
            curl_setopt($ch, CURLOPT_POST, 1);
        }
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

        $output = curl_exec($ch);

        curl_close($ch);

        return $output;

    }

}