<?php

namespace app\service;

use Curl\Curl;

class BaiduOcrService
{
    private $access_token;
    private $access_token_url = 'https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials';

    private $ocr_url='https://aip.baidubce.com/rest/2.0/ocr/v1/';
    public function __construct()
    {
        $this->getAccessToken();
    }
    /**
     *
     *护照识别
     * @param string $fileData 图片的二进制数据
     * @return array
     */
    function passport($fileData)
    {
        if ($fileData === false) {
            return [
                'code' => 0,
                'msg' => '无法读取上传的文件',
            ];
        }
        if (empty($this->access_token)){
            return [
                'code' => 0,
                'msg' => '无法识别',
            ];
        }
        $curl = new Curl();
        $curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
        $curl->setOpt(CURLOPT_SSL_VERIFYHOST, 0);
        $curl->post($this->ocr_url.'passport'.'?access_token='.$this->access_token, [
            'image' => base64_encode($fileData),
        ]);
        if ($curl->error) {
            return [
                'code' => 0,
                'msg' => $curl->errorMessage,
            ];
        } else {
            if (isset($curl->response->error_code)){
                return [
                    'code' => 0,
                    'msg' => '解析失败',
                ];
            }
            $datas = json_decode(json_encode($curl->response), true);
            return [
                'code' => 1,
                'data' =>  parsePassport($datas)
            ];
        }
    }
    public function getAccessToken()
    {
        if (file_exists(BAIDUACCESSTOKENDIR.'baidu_access_token')){
            $access_token = file_get_contents(BAIDUACCESSTOKENDIR.'baidu_access_token');
            $access_token = json_decode($access_token,true);
            if ($access_token['expires_time'] > time()){
               $this->access_token = $access_token['access_token'];
                return [
                    'code' => 1,
                    'msg' => "获取成功",
                ];
            }

        }
        $this->access_token_url = $this->access_token_url.'&client_id='.config('app.baidu_ocr.appkey').'&client_secret='.config('app.baidu_ocr.appsecket');
        $curl = new Curl();
        $curl->setHeader('Content-Type', 'application/json');
        $curl->post($this->access_token_url);
        if ($curl->error) {
            return [
                'code' => 0,
                'msg' => $curl->errorMessage,
            ];
        }
       //进行存储access_token
        $access_token = $curl->response->access_token;
        $this->access_token = $access_token;
        file_put_contents(BAIDUACCESSTOKENDIR.'baidu_access_token',json_encode(
            [
                'access_token' => $access_token,
                'expires_time' => time() + $curl->response->expires_in - 600,
            ]
        ));
        return [
            'code' => 1,
            'msg' => "获取成功",
        ];
    }
    /**
     *
     *身份证识别
     * @param string $fileData 图片的二进制数据
     * @return array
     */
    function identification($fileData)
    {
        if ($fileData === false) {
            return [
                'code' => 0,
                'msg' => '无法读取上传的文件',
            ];
        }
        if (empty($this->access_token)){
            return [
                'code' => 0,
                'msg' => '无法识别',
            ];
        }
        $curl = new Curl();
        $curl->post($this->ocr_url.'idcard'.'?access_token='.$this->access_token, [
            'id_card_side' => "front",
            'image' => base64_encode($fileData),
        ]);
        if ($curl->error) {
            return [
                'code' => 0,
                'msg' => $curl->errorMessage,
            ];
        } else {
            if (isset($curl->response->error_code)){
                return [
                    'code' => 0,
                    'msg' => '解析失败',
                ];
            }
            $datas = json_decode(json_encode($curl->response), true);
            return [
                'code' => 1,
                'data' =>  parseIdentification($datas)
            ];
        }
    }
    /**
     *
     *护照识别
     * @param string $fileData 图片的二进制数据
     * @return array 包含压缩后图片信息的数组
     */
    function visa($fileData)
    {
        if ($fileData === false) {
            return [
                'code' => 0,
                'msg' => '无法读取上传的文件',
            ];
        }
        if (empty($this->access_token)){
            return [
                'code' => 0,
                'msg' => '无法识别',
            ];
        }
        $curl = new Curl();
        $curl->post($this->ocr_url.'accurate_basic'.'?access_token='.$this->access_token, [
            'image' => base64_encode($fileData),
            'language_type'=>'ENG'
        ]);
        if ($curl->error) {
            return [
                'code' => 0,
                'msg' => $curl->errorMessage,
            ];
        } else {
            if (isset($curl->response->error_code)){
                return [
                    'code' => 0,
                    'msg' => '解析失败',
                ];
            }
            $datas = json_decode(json_encode($curl->response), true);
            return [
                'code' => 1,
                'data' =>  parseVisa($datas)
            ];
        }
    }

}