<?php

namespace app\common\library\baidu;

class OcrLicense
{
    const LICENSEURL = 'https://aip.baidubce.com/rest/2.0/ocr/v1/business_license';
    const TOKENURL = 'https://aip.baidubce.com/oauth/2.0/token';
    private int $status = 1;

    private string $msg = 'success';

    private array $data = [];
    private string $clientId;

    private string $clientSecret;

    public function __construct(string $clientId, string $clientSecret)
    {
        $this->clientId = trim($clientId);
        $this->clientSecret = trim($clientSecret);
    }

    public function check($img_url): array
    {
        $token = $this->getToken();
        if (!$token) {
            return $this->resultHandle();
        }
        $data['url'] = $img_url;
        $data['risk_warn'] = 'true';
        $url = self::LICENSEURL . '?access_token=' . $token;
        $result = $this->post($url, $data);
        $this->msg = json_encode($result);
        $this->validateData($result);
        return $this->resultHandle();
    }

    private function validateData($data)
    {
        $name = '';
        $credit_code = '';
        if (!empty($data->log_id) && !empty($data->words_result) && !empty($data->words_result_num)) {
            if (!empty($data->risk_type)) {
                $this->riskType($data->risk_type);
                if (!$this->status) {
                    return;
                }
            }
            $words_result_num = intval($data->words_result_num);
            if ($words_result_num != 16) {
                $this->msg = '证件信息不全';
                return;
            }
            //身份信息
            $arr = $data->words_result;
            if (!empty($arr->单位名称->words)) {
                $name = $arr->单位名称->words;
            }
            if (!empty($arr->社会信用代码->words)) {
                $credit_code = $arr->社会信用代码->words;
            }
        } else {
            $this->msg = '接口异常';
        }
        $this->data = compact('name', 'credit_code');
    }

    private function riskType(string $key)
    {
        $this->status = 0;
        switch ($key) {
            case 'normal':
                $this->status = 1;
                break;
            case 'copy':
                $this->msg = '不能上传复印件';
                break;
            case 'temporary':
                $this->msg = '不能上传临时证件';
                break;
            case'screen':
                $this->msg = '不能上传翻拍证件';
                break;
            default:
                "不合法的证件照";
                break;
        }
    }

    private function resultHandle(): array
    {
        return ['status' => $this->status, 'msg' => $this->msg, 'data' => $this->data];
    }

    private function post(string $url, array $postData)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_HEADER, 0);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_POST, 1);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $postData);
        $response = curl_exec($curl);
        curl_close($curl);
        return json_decode($response);
    }

    /**
     * @notes:获取token
     * @return mixed|string
     * @author: wanghousheng
     */
    private function getToken()
    {
        $token = '';
        $data['grant_type'] = 'client_credentials';
        $data['client_id'] = $this->clientId;
        $data['client_secret'] = $this->clientSecret;
        $result = $this->post(self::TOKENURL, $data);
        if (!empty($result->access_token)) {
            $token = $result->access_token;
        } else {
            $this->msg = '获取token失败';
        }
        return $token;
    }
}