<?php


namespace App\Service\YunXuan;


use App\Log;
use App\Service\HttpService;
use App\Support\EmailQueue;

class YXRequestService
{
    const FORM_URLENCODED = "application/x-www-form-urlencoded";

    public static function getSortedParameterStr($paramArr)
    {
        ksort($paramArr);
        $tmpArr = array();
        foreach ($paramArr as $k => $v) {
            $tmp = $k;
            if (!empty($v)) {
                $tmp .= ("=" . $v);
            }
            array_push($tmpArr, $tmp);
        }

        return join('&', $tmpArr);
    }

    /**
     * Send a HTTP request with App Authorization
     *
     * @param $apiAppKey string AppKey
     * @param $apiAppSecret string  AppSecret
     * @param $method string HTTP Method of API
     * @param $url string Request URL of API, note that environment path (/release) is not allowed
     * @param $contentType string Request Content-Type header, set empty if request body is not needed
     * @param $acceptHeader string Accept HTTP request header
     * @param $reqBody string Request Body, set null if request body is not needed
     * @param $formParam array form parameters array, set null if not form request
     * @param $algorithm string Encryption algorithm: sha1, sha256, sha384, sha512, SM3, default to sha1
     * @param $customHeaders array Custom HTTP Headers, such as `array('x-header-a' => 1)`
     */
    public static function sendRequestWithAppAuth(
        $apiAppKey, $apiAppSecret, $method, $url, $contentType, $acceptHeader, $reqBody=null,
        $formParam=null, $algorithm=null, $customHeaders=null
    )
    {
        $contentMD5 = "";
        $isForm = ($contentType == self::FORM_URLENCODED);

        if ($isForm) {
            assert(!is_null($formParam), "formParam is required for form request");
            // generate request body from form parameters
            $reqBody = self::getSortedParameterStr($formParam);
        } elseif (!is_null($reqBody)) {
            // get content md5 for signing the request later
            $contentMD5 = base64_encode(md5($reqBody));
        }

        if (null === $algorithm) {
            $algorithm = "sha1";
        }

        $paramArr = array();
        $parsedUrl = parse_url($url);
        if (isset($parsedUrl['query']) && !is_null($parsedUrl['query']) && !empty($parsedUrl['query'])) {
            parse_str($parsedUrl['query'], $paramArr);
        }
        if (!empty($formParam)) {
            $paramArr = array_merge($paramArr, $formParam);
        }

        $pathAndParam = $parsedUrl['path'];
        if (!empty($paramArr)) {
            $pathAndParam = $pathAndParam . '?' . self::getSortedParameterStr($paramArr);
        }

        $xDateHeader = gmstrftime('%a, %d %b %Y %T %Z', time());
        $strToSign = sprintf(
            "x-date: %s\n%s\n%s\n%s\n%s\n%s", $xDateHeader, $method, $acceptHeader, $contentType, $contentMD5, $pathAndParam
        );

//        $strToSignDebug = str_replace("\n", "#", $strToSign);
        $sign = base64_encode(hash_hmac($algorithm, $strToSign, $apiAppSecret, TRUE));
        $authHeader = sprintf(
            'hmac id="%s", algorithm="hmac-%s", headers="x-date", signature="%s"',
            $apiAppKey, $algorithm, $sign
        );

        $headers = array(
            'Host:' . $parsedUrl['host'],
            'Accept:' . $acceptHeader,
            'X-Date:' . $xDateHeader,
            'Authorization:' . $authHeader,
        );
        if (!empty($contentType)) {
            array_push($headers, "Content-Type:" . $contentType);
        }
        if (!empty($contentMD5)) {
            array_push($headers, "Content-MD5:" . $contentMD5);
        }
        if (!is_null($customHeaders) && is_array($customHeaders)) {
            foreach ($customHeaders as $k => $v) {
                array_push($headers, $k . ":" . $v);
            }
        }

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, 60);
        if (!empty($reqBody)) {
            curl_setopt($ch, CURLOPT_POSTFIELDS, $reqBody); // only required if request body is present
        }
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
        $data = curl_exec($ch);
        if (curl_errno($ch)) {
            Log::logError('云选联盟接口请求失败', ['error' => curl_error($ch)], 'YXRequest');
            return false;
        }

        Log::logError('云选联盟接口返回结果', [
            'method' => $method, 'url' => $url, 'form_param' => $formParam, 'data' => $data, 'req_body' => $reqBody
        ], 'YXRequest');
        curl_close($ch);

        return $data;
    }
}