<?php
namespace data\extend\oauth;
use data\extend\ThinkOauth as ThinkOauth;

class QQLogin extends ThinkOauth{
	/**
	 * 获取requestCode的api接口
	 * @var string
	 */
	protected $GetRequestCodeURL = 'https://graph.qq.com/oauth2.0/authorize';
	
	/**
	 * 获取access_token的api接口
	 * @var string
	 */
	protected $GetAccessTokenURL = 'https://graph.qq.com/oauth2.0/token';
	
	/**
	 * 获取request_code的额外参数,可在配置中修改 URL查询字符串格式
	 * @var srting
	 */
	protected $Authorize = 'scope=get_user_info,add_share';

	/**
	 * API根路径
	 * @var string
	 */
	protected $ApiBase = 'https://graph.qq.com/';
	
	protected $Type = 'QQLOGIN';

	/**
	 * 组装接口调用参数 并调用接口
	 * @param  string $api    微博API
	 * @param  string $param  调用API的额外参数
	 * @param  string $method HTTP请求方法 默认为GET
	 * @return json
	 */
	public function call($api, $param = '', $method = 'GET', $multi = false){
		/* 腾讯QQ调用公共参数 */
		$params = array(
			'oauth_consumer_key' => $this->AppKey,
			'access_token'       => $this->Token['access_token'],
			'openid'             => $this->openid(),
			'format'             => 'json'
		);
		
		$data = $this->http($this->url($api), $this->param($params, $param), $method);
		return json_decode($data, true);
	}
	
	/**
	 * 解析access_token方法请求后的返回值 
	 * @param string $result 获取access_token的方法的返回值
	 */
	protected function parseToken($result, $extend){
		parse_str($result, $data);
		if($data['access_token'] && $data['expires_in']){
			$this->Token    = $data;
			$data['openid'] = $this->openid();
			return $data;
		} else
			throw new \Exception("获取腾讯QQ ACCESS_TOKEN 出错：{$result}");
	}
	
	/**
	 * 获取当前授权应用的openid
	 * @return string
	 */
	public function openid(){
		$data = $this->Token;
		if(isset($data['openid']))
			return $data['openid'];
		elseif($data['access_token']){
			$data = $this->http($this->url('oauth2.0/me'), array('access_token' => $data['access_token']));
			$data = json_decode(trim(substr($data, 9), " );\n"), true);
			if(isset($data['openid']))
				return $data['openid'];
			else
				throw new \Exception("获取用户openid出错：{$data['error_description']}");
		} else {
			throw new \Exception('没有获取到openid！');
		}
	}
}