<?php
/**
 * Class leagueChat
 * Login to your LoL account via the mobile chat for IOS/Android to pull stats and such without any limits vs the limited API key Riot gives you. 
 * Example usage @ : https://gist.github.com/moorer2k/562199c183222b201f09ffb402ca6b65#comments
 */
class leagueChat {
	protected $username;
	protected $password;
	protected $region;
	protected $lang;
	protected $authKey;
	/**
	 * leagueChat constructor.
	 * @param $username
	 * @param $password
	 * @param string $region
	 * @param string $lang
	 */
	public function __construct($username, $password, $region = 'NA1', $lang = 'en_US')
	{
		$this->username = $username;
		$this->password = $password;
		$this->region = $region;
		$this->lang = $lang;
		$this->Login($username, $password, $region, $lang);
	}
	/**
	 * Get summoner by ID.
	 * 
	 * @param integer $id
	 * @return string
	 */
	public function getSummonerById($id){
		return $this->getData('https://na.api.pvp.net/api/lol/na/v1.4/summoner/' . $id);
	}
	/**
	 * Login procedure used in the mobile LoLChat client.
	 *
	 * @param $username
	 * @param $password
	 * @param $region
	 * @param $lang
	 *
	 * @return bool
	 */
	protected function Login($username, $password, $region, $lang) 	{
		$url = 'https://auth.riotgames.com/authz/status';
		$jsonRequest = json_encode(['query' => 'redirect_uri=http://localhost/oauth2-callback&client_id=leagueconnect&response_type=code&scope=openid&ui_locales=en-US']);
		// First we get the initial session data to store for our next request.
		$session1 = $this->postData($url, $jsonRequest, true);
		$uri = 'https://auth.riotgames.com/authz/auth';
		$login = json_encode(['username' => $username, 'password' => $password, 'region' => $region, 'remember' => 'true', 'lang' => $lang]);
		// Now we can send our credentials to login with.
		$session2 = $this->postData($uri, $login, false, $session1);
		// The auth token is required as part of the next post data, so we must parse and store it for our final request.
		$authToken = explode('"', explode('code=', $session2)[1])[0];
		$uri2 = 'https://auth.riotgames.com/token';
		//  The post paramter (at the end of $pData) client_secret is generated for each users device when installed on the mobile device. So far this has always worked for any user/pass!
		$pData = 'grant_type=authorization_code&code=' . trim($authToken) . '&redirect_uri=http%3A%2F%2Flocalhost%2Foauth2-callback&client_id=leagueconnect&client_secret=amVYw7iK_qSaGUNqxRvzgs16EMgdEUdu1mDVdMNJDC4';
		// Fire off the final request and check if access_token has been set!
		$jRequest = $this->postData($uri2, $pData, false, '', true);
		$this->authKey = trim(json_decode($jRequest)->access_token);
		if(!empty($this->authKey)){
			return true;
		}
		return false;
	}
	/**
	 * Send a GET request with the AuthKey provided from successfully authenticating.
	 *
	 * @param $url
	 * @return string
	 */
	protected function getData($uri){
		$response = \Httpful\Request::get($uri)
			->addHeader('Authorization', 'Bearer ' . $this->authKey)
			->send();
		return $response->body;
	}
	/**
	 * Send specific POST requests as per required.
	 *
	 * @param $uri
	 * @param $postData
	 * @param bool $returnCookie
	 * @param string $cookieSession
	 * @param bool $lastRequest
	 * @return \Httpful\Response
	 */
	protected function postData($uri, $postData, $returnCookie = false, $cookieSession = '', $lastRequest = false) {
		if(!empty($cookieSession)){
			$response = \Httpful\Request::post($uri)
				->body($postData)
				->addHeader('Referer', 'https://auth.riotgames.com/authorize?redirect_uri=http://localhost/oauth2-callback&client_id=leagueconnect&response_type=code&scope=openid&ui_locales=en-US')
				->addHeader('Cookie', $cookieSession)
				->addHeader('Content-Type', 'application/json')
				->send();
		} elseif($lastRequest) {
			$response = \Httpful\Request::post($uri)
				->body($postData)
				->addHeader('Content-Type', 'application/x-www-form-urlencoded; charset=utf-8')
				->addHeader('Accept', '*')
				->addHeader('User-Agent', 'LoL%20Friends/490 CFNetwork/758.0.2 Darwin/15.0.0')
				->send();
		} else {
			$response = \Httpful\Request::post($uri)
				->body($postData)
				->addHeader('Referer', 'https://auth.riotgames.com/authorize?redirect_uri=http://localhost/oauth2-callback&client_id=leagueconnect&response_type=code&scope=openid&ui_locales=en-US')
				->sendsJson()
				->send();
		}
		if($returnCookie){
			$respHeaders = $response->headers->toArray() ;
			return explode(';', $respHeaders['set-cookie'])[0];
		}
		return $response;
	}
}