<?php


namespace wchat\officialaccount;


use Exception;
use wchat\common\Result;
use wchat\officialaccount\dcaler\SnsInfo;
use wchat\common\HttpClient;
use wchat\officialaccount\dcaler\Authorization as DAuth;

/**
 * Class Authorization
 * @package wchat\officialaccount
 */
class Authorization extends AfficialAccount
{

	private $url = 'https://api.weixin.qq.com/cgi-bin/user/info';

	private $turn = 'https://api.weixin.qq.com/cgi-bin/shorturl?access_token=';

	private $oauth2 = 'https://api.weixin.qq.com/sns/oauth2/access_token';
	private $snsUserInfo = 'https://api.weixin.qq.com/sns/userinfo';


	/**
	 * @param $code
	 * @return Result
	 * @throws Exception
	 */
	public function authorization_user_info($code)
	{
		$param = $this->GetAccessTokenByCode($code);
		if (!$param->isResultsOK()) {
			throw new Exception($param->getMessage());
		}

		$requestParam['access_token'] = $param->getData('access_token');
		$requestParam['openid'] = $param->getData('openid');
		$requestParam['lang'] = 'zh_CN';

		$client = HttpClient::NewRequest();
		$client->setUseSwoole($this->getConfig()->isUsrSwoole());
		$result = $client->get($this->snsUserInfo, $requestParam);
		if ($result->isResultsOK()) {
			return $result;
		}

		$userInfo = SnsInfo::instance($result->getData());
		$result->append('instance', $userInfo);

		return $result;
	}

	/**
	 * @param $code
	 * @return array|mixed|Result
	 */
	private function GetAccessTokenByCode($code)
	{
		$requestParam['appid'] = $this->config->getAppid();
		$requestParam['secret'] = $this->config->getAppsecret();
		$requestParam['code'] = $code;
		$requestParam['grant_type'] = 'authorization_code';

		$client = HttpClient::NewRequest();
		$client->setUseSwoole($this->getConfig()->isUsrSwoole());
		return $client->get($this->oauth2, $requestParam);
	}

	/**
	 * @param $openid
	 * @return DAuth
	 * @throws Exception
	 * 获取用户信息
	 */
	public function To_grant_authorization($openid)
	{
		$requestParam['access_token'] = $this->config->getAccessToken();
		$requestParam['openid'] = $openid;
		$requestParam['lang'] = 'zh_CN';

		$authorization = $this->request->get($this->url, $requestParam);
		if (!$authorization) {
			throw new Exception($authorization->getMessage());
		}

		return DAuth::instance($authorization->getData());
	}


	/**
	 * @param $long_url
	 * @return string
	 * @throws Exception
	 */
	public function Turn_to_short_chain($long_url)
	{
		$token = $this->config->getAccessToken();
		$requestParam['action'] = 'long2short';
		$requestParam['long_url'] = $long_url;

		$result = $this->request->post($this->turn . $token, $requestParam);
		if (!$result->isResultsOK()) {
			throw new Exception($result->getMessage());
		}
		return $result->getData('short_url');
	}

}