/*
 * The facebook_onload statement is printed out in the PHP. If the user's logged in
 * status has changed since the last page load, then refresh the page to pick up
 * the change.
 *
 * This helps enforce the concept of "single sign on", so that if a user is signed into
 * Facebook when they visit your site, they will be automatically logged in -
 * without any need to click the login button.
 *
 * @param already_logged_into_facebook  reports whether the server thinks the user
 *                                      is logged in, based on their cookies
 *
 */

var askUserInfo = true;
function facebook_onload(already_logged_into_facebook) {
  // user state is either: has a session, or does not.
  // if the state has changed, detect that and reload.
  FB.ensureInit(function() {
      FB.Facebook.get_sessionState().waitUntilReady(function(session) {
          var is_now_logged_into_facebook = session ? true : false;

          // if the new state is the same as the old (i.e., nothing changed)
          // then do nothing
          if (is_now_logged_into_facebook == already_logged_into_facebook) {
            return;
          }

          // otherwise, refresh to pick up the state change
          //refresh_page();
          window.location = '/redirectToProfile.php';
        });
    });
}

function fbDisplay(isLoggedInFB,isloggedInNative)
{
	/*if (isLoggedInFB && !isloggedInNative)
		authenticateUser()*/
}

function fbLogout(loc)
{
	FB.Connect.logoutAndRedirect(loc);
}

function fbLogin()
{
	FB.Connect.requireSession();
}


/*
 * Our <fb:login-button> specifies this function in its onlogin attribute,
 * which is triggered after the user authenticates the app in the Connect
 * dialog and the Facebook session has been set in the cookies.
 */
function facebook_onlogin_ready(isLoggedIn) {
	// In this app, we redirect the user back to index.php. The server will read
	// the cookie and see that the user is logged in, and will deliver a new page
	// with content appropriate for a logged-in user.
	//
	// However, a more complex app could use this function to do AJAX calls
	// and/or in-place replacement of page contents to avoid a full page refresh.
	//refresh_page();
}


function facebook_invite_users() {
	FB.ensureInit(function() {
        var dialog = new FB.UI.FBMLPopupDialog('Invite your friends to join', '');
        var fbml = "<fb:fbml>"+"<fb:request-form style=\"width:700px; height:640px;\" action=\"" + document.location.href + "?\"\tmethod=\"POST\" invite=\"false\" type=\"Invite\" "+"content=\"<fb:req-choice url='"+baseURL+"' label='Confirm' />\">"+"<fb:multi-friend-selector\tshowborder=\"false\" exclude_ids=\"\" actiontext=\"Invite your friends\" rows=\"5\" bypass=\"cancel\"\tshowborder=\"false\" />"+"</fb:request-form>"+"</fb:fbml>";
        dialog.setFBMLContent(fbml);
        dialog.setContentWidth(800); 
        dialog.setContentHeight(650);
        dialog.show();
    });

}

/*
 * Do a page refresh after login state changes.
 * This is the easiest but not the only way to pick up changes.
 * If you have a small amount of Facebook-specific content on a large page,
 * then you could change it in Javascript without refresh.
 */
function refresh_page() {
	 location.reload(true);
}

/*
 * Prompts the user to grant a permission to the application.
 */
function facebook_prompt_permission(permission) {
  FB.ensureInit(function() {
    FB.Connect.showPermissionDialog(permission);
  });
}