<?php
# License:
# Copyright (c) 2009, Open Source Geospatial Foundation
# This program is dual licensed under the GNU General Public License 
# and Simplified BSD license.  
# http://svn.osgeo.org/mapbender/trunk/mapbender/license/license.txt

require_once dirname(__FILE__) . "/../../core/globalSettings.php";
require_once '../extensions/epicode/EpiCurl.php';
require_once '../extensions/epicode/EpiOAuth.php';
require_once '../extensions/epicode/EpiTwitter.php';

$gui_id = Mapbender::session()->get("mb_user_gui");
$e_id = "twitter_signin";

require_once '../include/dyn_php.php';

$ajaxResponse = new AjaxResponse($_POST);

if (!isset($consumerKey) || !isset($consumerSecret)) {
	$ajaxResponse->setSuccess(false);
	$ajaxResponse->setMessage(_mb("Element vars consumerKey and consumerSecret are not set. If you don't have them, get them from Twitter."));
	$ajaxResponse->send();
}

function isSignedIn ($token = null) {
	global $Twitter;
	
	if (!is_null($token)) {
		try {
			$Twitter->setToken($token);
			$accessToken = $Twitter->getAccessToken();
			Mapbender::session()->set("twitter_token", $accessToken->oauth_token);
			Mapbender::session()->set("twitter_token_secret", $accessToken->oauth_token_secret);
		}
		catch (Exception $e) {
			Mapbender::session()->delete("twitter_token");
			Mapbender::session()->delete("twitter_token_secret");
			return false;
		}
	}

	if (Mapbender::session()->exists("twitter_token") && Mapbender::session()->exists("twitter_token_secret")) {
		$Twitter->setToken(
			Mapbender::session()->get("twitter_token"), 
			Mapbender::session()->get("twitter_token_secret")
		);
		new mb_exception("token: " . Mapbender::session()->get("twitter_token"));
		new mb_exception("token_secret: " . Mapbender::session()->get("twitter_token_secret"));
		return true;
		
	}
	return false;	
}

$Twitter = new EpiTwitter($consumerKey, $consumerSecret);
		
switch ($ajaxResponse->getMethod()) {
	case "isSignedIn" :
		$token = $ajaxResponse->getParameter("token");
		
		if (isSignedIn($token)) {
			$ajaxResponse->setResult(array("signedIn" => true)); 
			$ajaxResponse->setMessage(_mb("Signed in."));
			$ajaxResponse->send();
		}		

		$ajaxResponse->setResult(array("signedIn" => false)); 
		$ajaxResponse->setMessage(_mb("Not signed in."));
		$ajaxResponse->setSuccess(true);
		break;

	case "signin" :
		try {
			$url = $Twitter->getAuthenticateUrl();
		}
		catch (Exception $e) {
			$ajaxResponse->setSuccess(false);
			$ajaxResponse->setMessage(_mb("Could not connect to Twitter."));
			$ajaxResponse->send();
		}

		$ajaxResponse->setResult(array("url" => $url)); 
		$ajaxResponse->setSuccess(true);
		break;

	case "signout" :
		Mapbender::session()->delete("twitter_token");
		Mapbender::session()->delete("twitter_token_secret");

		$ajaxResponse->setResult(array("signedOut" => true)); 
		$ajaxResponse->setMessage(_mb("Signed out."));
		$ajaxResponse->setSuccess(true);
		break;

	case "update":
		if (!isSignedIn()) {
			$ajaxResponse->setResult(array("signedIn" => false)); 
			$ajaxResponse->setMessage(_mb("Not signed in."));
			$ajaxResponse->setSuccess(true);			
			$ajaxResponse->send();
		}
		$Twitter = new EpiTwitter($consumerKey, $consumerSecret);
		$status = $ajaxResponse->getParameter("status");
		$lat = $ajaxResponse->getParameter("lat");
		$lon = $ajaxResponse->getParameter("lon");
		try {
			$newStatus = $Twitter->post_statusesUpdate(array(
				'status' => $text, 
				'lat' => $lat, 
				'long' => $long
			));
		}
		catch (Exception $e) {
			$ajaxResponse->setSuccess(false);
			$ajaxResponse->setMessage(_mb("Could not connect to Twitter."));
			$ajaxResponse->send();
		}
		$ajaxResponse->setResult(array(
			"res" => serialize($newStatus)
		)); 
		$ajaxResponse->setSuccess(true);
		break;
	default: 
		$ajaxResponse->setSuccess(false);
		$ajaxResponse->setMessage(_mb("An unknown error occured."));
		break;
}
$ajaxResponse->send();
?>