// jk: this script assumes you are using the Facebook OAuth API and have already called FB.init on your site.
if(!com) var com = {};
if(!com.bigspaceship) com.bigspaceship = {};
if(!com.bigspaceship.api) com.bigspaceship.api = {};
if(!com.bigspaceship.api.facebook) com.bigspaceship.api.facebook = {};

if(!com.bigspaceship.api.facebook.OAuthBridge) {
	com.bigspaceship.api.facebook.OAuthBridge = {};
	com.bigspaceship.api.facebook.OAuthBridge._swfId = 'site';

	com.bigspaceship.api.facebook.OAuthBridge.setSwfId = function($id) {
		com.bigspaceship.api.facebook.OAuthBridge._swfId = $id;
	}

	com.bigspaceship.api.facebook.OAuthBridge.initialize = function() {
		// jk: set a timeout of a second in case getLoginStatus fails.
		com.bigspaceship.api.facebook.OAuthBridge._timer = setTimeout(function() {
			$("#" + com.bigspaceship.api.facebook.OAuthBridge._swfId)[0].handleFacebookLogout();
		},1000);

		FB.getLoginStatus(function(response) {
			clearTimeout(com.bigspaceship.api.facebook.OAuthBridge._timer);
			com.bigspaceship.api.facebook.OAuthBridge._timer = null;
			
			if (response.session) {
				// jk: there is a bug in the current getLoginStatus method Facebook JavaScript SDK -- it doesn't return permissions as expected. the best we can do is manually ask.
				FB.api({
			            method : 'fql.query',
			            query : 'SELECT status_update,photo_upload,sms,offline_access,email,create_event,rsvp_event,publish_stream,read_stream,share_item,create_note,bookmarked,tab_added FROM permissions WHERE uid=' + FB.getSession().uid
			       },
			       function(response) {
					var perms = [];
					for(perm in response[0]) {
						if(response[0][perm] == '1') perms.push(perm);
					}

					$("#" + com.bigspaceship.api.facebook.OAuthBridge._swfId)[0].handleFacebookLogin(FB.getSession(),perms.join(','));
			       });
			}
			else {
				$("#" + com.bigspaceship.api.facebook.OAuthBridge._swfId)[0].handleFacebookLogout();
			}
		});
	}

	com.bigspaceship.api.facebook.OAuthBridge.login = function($opts) {
		if(!$opts) $opts = {};

		FB.login(function(response) {
			if(response.session) {
				$("#" + com.bigspaceship.api.facebook.OAuthBridge._swfId)[0].handleFacebookLogin( FB.getSession() );
			} else {
				$("#" + com.bigspaceship.api.facebook.OAuthBridge._swfId)[0].handleFacebookLoginCancel();
			}
		},$opts);
	}

	com.bigspaceship.api.facebook.OAuthBridge.logout = function() {
		FB.logout(function(response) {});
		$("#" + com.bigspaceship.api.facebook.OAuthBridge._swfId)[0].handleFacebookLogout();
	}
}