<?php
namespace addons\csmadmin\library;

use fast\Http;
use think\Cache;

class DDUtils
{

    public static function getAccessToken()
    {
        trace("==getAccessToken==");
        $token = Cache::get('csmwx_dd_accesstoken');
        if (! $token) {
            $config = get_addon_config(CsmContants::$ADDONS);
            $params = [
                'appkey' => $config['ddappid'],
                'appsecret' => $config['ddappsecret']
            ];
            $url = "https://oapi.dingtalk.com/gettoken";
            $result = Http::sendRequest($url, $params, 'GET');
            trace($result);
            if ($result['errcode'] == '0') {
                $token = $result['access_token'];
                Cache::set('csmwx_dd_accesstoken', $token, 3600);
            }
        }
        return $token;
    }

    /**
     * 钉钉扫码登录文档:https://ding-doc.dingtalk.com/doc#/serverapi2/kymkv6
     */
    public static function getUserInfoByLoginTmpCode($loginTmpCode)
    {
        trace("==getUserInfoByLoginTmpCode==");
        $config = get_addon_config(CsmContants::$ADDONS);
        $params = [
            'tmp_auth_code' => $loginTmpCode
        ];
        $accessKey = $config['ddappid'];
        $timestamp = time() * 1000;
        $signature = static::signature($timestamp);
        $url = "https://oapi.dingtalk.com/sns/getuserinfo_bycode?accessKey={$accessKey}&timestamp={$timestamp}&signature={$signature['urlencode_signature']}";
        $headers = [
            'Content-type: application/json'
        ];
        $options = [
            CURLOPT_HTTPHEADER => $headers
        ];

        trace($url);
        trace($params);
        $result = Http::post($url, json_encode($params), $options);

        trace($result);
        $result = json_decode($result, true);
        if ($result['errcode'] == '0') {
            return $result['user_info'];
        } else {
            return null;
        }
    }

    private static function signature($timestamp)
    {
        $config = get_addon_config('csmadmin');
        // 根据timestamp, appSecret计算签名值
        $s = hash_hmac('sha256', $timestamp, $config['ddappsecret'], true);
        $signature = base64_encode($s);
        // var_dump($signature);
        $urlencode_signature = urlencode($signature);
        // var_dump($urlencode_signature);
        return [
            'signature' => $signature,
            'urlencode_signature' => $urlencode_signature];
    }
}