<?php
namespace app\expand\controller;
use app\common\service\HelperService;
use think\Cache;
use think\Validate;

/**
 * 百度相关接口
 * Class Baidu
 * @package app\expand\controller
 */
class Baidu extends BaseAuth
{
    private $_baseUrl = 'https://aip.baidubce.com';
    private $_baiDuAccount = null;

    public function __construct(){
        parent::__construct();

        $this->_baiDuAccount = $this->getKey($this->_apiCode);
        //验证是否具有访问这个接口的权限
        if(!isset($this->_baiDuAccount['baiDu_face_key'])
            || !isset($this->_baiDuAccount['baiDu_face_secret'])){
            HelperService::returnJson(['code'=>400,'msg'=>'baidu interface unauthorized access','data'=>[]]);
        }
    }

    /**
     * 获取百度人脸识别的token并且缓存一个月
     * @param bool $force
     * @return mixed
     */
    private function getBaiduToken($force=false){

        $key = $this->_baiDuAccount['baiDu_face_key'];
        $secret = $this->_baiDuAccount['baiDu_face_secret'];

        $baiDuKey = Cache::get("baiDuKey_$key");
        if(!empty($baiDuKey) && $force==false){
            return $baiDuKey;
        }

        $url = $this->_baseUrl."/oauth/2.0/token?grant_type=client_credentials&client_id=$key&client_secret=$secret&";
        $res = HelperService::httpPost($url,'',true);
        $resultArr = @json_decode($res,true);

        if(isset($resultArr['error'])){
            HelperService::returnJson([
                'code'=>400,
                'msg'=>"baidu err msg",
                'data'=>$res
            ]);
        }

        Cache::set("baiDuKey_$key",$resultArr['access_token'],$resultArr['expires_in']);

        return $resultArr['access_token'];
    }

    /**
     * 请求百度人脸识别匹配人脸接口
     */
    public function match(){

        $params = $this->_params;
        $rule = [
            'old_image|原始图片'=>'require',
            'old_image_type|原始图片类型'=>'require',
            'now_image|现在的图片'=>'require',
            'now_image_type|现在的图片类型'=>'require',
        ];

        $validate = new Validate($rule);
        if(!$validate->check($params)){
            HelperService::returnJson(['code'=>400,'msg'=>$validate->getError(),'data'=>$params]);
        }

        $imageType = ['URL','FACE_TOKEN','BASE64'];

        if(!in_array($params['old_image_type'],$imageType)
            || !in_array($params['now_image_type'],$imageType)){

            HelperService::returnJson(['code'=>400,'msg'=>'image_type value is error','data'=>[]]);
        }

        $matchImage = [
            [
                'image'=>"{$params['old_image']}",
                'image_type'=>"{$params['old_image_type']}",
                "face_type"=>"LIVE",
                "quality_control"=>"NORMAL",
                "liveness_control"=>"NORMAL"
            ],[
                'image'=>"{$params['now_image']}",
                'image_type'=>"{$params['now_image_type']}",
                "face_type"=>"LIVE",
                "quality_control"=>"NORMAL",
                "liveness_control"=>"NORMAL"
            ]
        ];


        $token = $this->getBaiduToken();

        //重试2次
        $times = 2;
        requestMatch:
        $url = $this->_baseUrl.'/rest/2.0/face/v3/match?access_token='.$token;
        $res = HelperService::httpPost($url,json_encode($matchImage),true);

        $resultArr = @json_decode($res,true);

        if(isset($resultArr['error_code']) && $resultArr['error_code'] == 110 && $times>0){
            $token = $this->getBaiduToken(true);
            $times--;
            goto requestMatch;
        }
        
        if(isset($resultArr['error_code']) && $resultArr['error_code'] == 222209){
            $data = $this->register("{$params['now_image']}", "{$params['now_image_type']}");
            HelperService::returnJson(['code'=>201,'msg'=>"success",'data'=>$data]);
        }

        if(stripos($res,'cheek ') >0){
            HelperService::returnJson(['code'=>400,'msg'=>'请检查脸颊是否被遮挡或光线太弱！','data'=>$res]);
        }

        if(stripos($res,'eye ') >0){
            HelperService::returnJson(['code'=>400,'msg'=>'请检查眼睛是否被遮挡或闭眼！','data'=>$res]);
        }

        if(stripos($res,'face ') >0){
            HelperService::returnJson(['code'=>400,'msg'=>'请检查脸部是否被遮挡或光线太弱！','data'=>$res]);
        }

        if(stripos($res,'pic ') >0){
            HelperService::returnJson(['code'=>400,'msg'=>'请检查图片是否完整或不是脸部图片！','data'=>$res]);
        }

        if(!isset($resultArr['result']['score'])){
            HelperService::returnJson(['code'=>400,'msg'=>'验证失败','data'=>$res]);
        }

        HelperService::returnJson(['code'=>200,'msg'=>'success','data'=>['score'=>strval(round("{$resultArr['result']['score']}",2)),'res'=>$resultArr['result']['face_list']]]);
    }

    
    /**
     * 注册人脸
     * @param type $img
     * @param type $type
     * @param type $group_id
     */
    private function register($img,$type,$group_id="default",$userId=null){
        
        $userId = empty($userId)?$userId:uniqid();
        
        $token = $this->getBaiduToken(true);

        //重试2次
        $times = 2;
        requestRegister:
        $url = $this->_baseUrl.'/rest/2.0/face/v3/faceset/user/add?access_token='.$token;
        \think\Log::record("requestRegister:".$url."==>".$times);
        $res = HelperService::httpPost($url,json_encode([
            "image"=>$img,
            'image_type'=>$type,
            "group_id"=>$group_id,
            "user_id"=> $userId,
        ]),true);

        $resultArr = @json_decode($res,true);

        if(isset($resultArr['error_code']) && $resultArr['error_code'] == 110  && $times>0){
            $token = $this->getBaiduToken(true);
            $times--;
            goto requestRegister;
        }
        
        if(empty($resultArr) || $resultArr['error_code']>0){
            HelperService::returnJson(['code'=>400,'msg'=>'注册人脸失败','data'=>$res]);
        }

        return ['res'=>$resultArr,'face_token'=>"{$resultArr['result']['face_token']}"];
    }

    /**
     * 人脸活体检测接口
     */
    public function detect(){

        $params = $this->_params;
        $rule = [
            'image|原始图片'=>'require|url',
        ];

        $validate = new Validate($rule);
        if(!$validate->check($params)){
            HelperService::returnJson(['code'=>400,'msg'=>$validate->getError(),'data'=>[]]);
        }

        $detectImage = [
            'image'=>"{$params['image']}",
            'image_type'=>'URL',
            'face_field'=>'quality'
        ];

        $token = $this->getBaiduToken();

        //重试2次
        $times = 2;
        requestDetect:
        $url = $this->_baseUrl.'/rest/2.0/face/v3/faceverify?access_token='.$token;
        $res = HelperService::httpPost($url,json_encode([$detectImage]),true);

        $resultArr = @json_decode($res,true);

        if(isset($resultArr['error_code']) && $resultArr['error_code'] == 110 && $times>0){
            $token = $this->getBaiduToken(true);
            $times--;
            goto requestDetect;
        }

        if(!isset($resultArr['error_msg']) || $resultArr['error_msg']!="SUCCESS" ){
            HelperService::returnJson(['code'=>400,'msg'=>'人脸活体检测失败','data'=>$res]);
        }

        if(!isset($resultArr['result']['face_liveness']) || round("{$resultArr['result']['face_liveness']}",2)< 0.97){
            HelperService::returnJson(['code'=>400,'msg'=>'请采集活体人脸照片','data'=>$resultArr,'liveness'=>round("{$resultArr['result']['face_liveness']}",2)]);
        }

        if(!isset($resultArr['result']['face_list'][0]['quality']['completeness']) || $resultArr['result']['face_list'][0]['quality']['completeness']<1){
            HelperService::returnJson(['code'=>400,'msg'=>'照片脸部不完整','data'=>$resultArr,'completeness'=>$resultArr['result']['face_list'][0]['quality']['completeness']]);
        }

        if(!isset($resultArr['result']['face_list'][0]['quality']['illumination']) || $resultArr['result']['face_list'][0]['quality']['illumination']<80){
            HelperService::returnJson(['code'=>400,'msg'=>'照片不够清晰度','data'=>$resultArr,'illumination'=>$resultArr['result']['face_list'][0]['quality']['illumination']]);
        }

        HelperService::returnJson(['code'=>200,'msg'=>'success','data'=>['res'=>$resultArr,'face_token'=>"{$resultArr['result']['face_list'][0]['face_token']}"]]);
    }

}