<?php

require_once $_SERVER["DOCUMENT_ROOT"] . "/entity/ApiToken.php";
require_once $_SERVER["DOCUMENT_ROOT"] . "/database/DbUtil.php";


//api请求
class BaiduAiRequest
{
    private static $client_id = "keaVPslHREMgVd6FwiEQqcCx";
    private static $client_secret = "vtsDKjRVbcALDc61GAflw8UAtmGYkIPX";
    private $url;

    /**
     * BaiduAiRequest constructor.
     * @param $url
     */
    public function __construct($url)
    {
        $this->url = $url;
    }

    function request_token()
    {
        try {
            if (empty(self::$client_id) or empty(self::$client_secret)) {
                throw new Exception("");
            }
            $post_data['grant_type'] = 'client_credentials';
            $post_data['client_id'] = self::$client_id;
            $post_data['client_secret'] = self::$client_secret;

            $json_res = $this->request_with_param($post_data);
            if (array_key_exists("error", $json_res)) {
                throw new Exception("请求异常");
            } else {
                DbUtil::delete("delete from api_token");
                $token = new ApiToken(null, $json_res["refresh_token"], $json_res["expires_in"], null, $json_res["scope"], $json_res["session_key"], $json_res["access_token"], $json_res["session_secret"]);
                DbUtil::insert("insert into api_token (refresh_token, expires_in, end_time, scope, session_key, access_token, session_secret) values (?,?,?,?,?,?,?)",
                    $types = "sisssss", $token->getRefreshToken(), $token->getExpiresIn(), date_format(date_create(date(default_format))->add(date_interval_create_from_date_string($token->getExpiresIn() . " seconds")), default_format), $token->getScope(), $token->getSessionKey(), $token->getAccessToken(), $token->getSessionSecret());
                info("token保存成功");
                return $token;
            }
        } catch (Exception $e) {
            $GLOBALS["default_log"]->error($e);
            return <<<EOF
                {"msg":"百度API请求失败，请联系管理员"}
            EOF;
        }
    }


    //    发送请求
    function request_with_param($param)
    {

        try {
            $o = "";
            foreach ($param as $k => $v) {
                $o .= "$k=" . urlencode($v) . "&";
            }
            $param = substr($o, 0, -1);
            if (empty($this->url) || empty($param)) {
                return false;
            }
            $curlPost = $param;
            $curl = curl_init($this->url);//初始化curl
            curl_setopt($curl, CURLOPT_HEADER, 0);//设置header
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($curl, CURLOPT_POST, 1);//post提交方式
            curl_setopt($curl, CURLOPT_POSTFIELDS, $curlPost);
            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
            $data = curl_exec($curl);//运行curl
            curl_close($curl);
            $json_res = json_decode($data, true, 512, JSON_UNESCAPED_UNICODE);
            info("接口响应结果：" . $data);
            return $json_res;
        } catch (Exception $e) {
            error($e);
            return <<<EOF
                {"msg":"百度API请求失败，请联系管理员"}
            EOF;
        }
    }

}