git-annex/Assistant/WebApp/Notifications.hs
2012-11-18 13:03:00 -04:00

88 lines
3 KiB
Haskell

{- git-annex assistant webapp notifications
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE CPP, TypeFamilies, QuasiQuotes, MultiParamTypeClasses, TemplateHaskell, OverloadedStrings, RankNTypes #-}
module Assistant.WebApp.Notifications where
import Assistant.Common
import Assistant.WebApp
import Assistant.WebApp.Types
import Assistant.DaemonStatus
import Assistant.Types.Buddies
import Utility.NotificationBroadcaster
import Utility.Yesod
import Yesod
import Data.Text (Text)
import qualified Data.Text as T
import qualified Data.Aeson.Types as Aeson
{- Add to any widget to make it auto-update using long polling.
-
- The widget should have a html element with an id=ident, which will be
- replaced when it's updated.
-
- The geturl route should return the notifier url to use for polling.
-
- ms_delay is how long to delay between AJAX updates
- ms_startdelay is how long to delay before updating with AJAX at the start
-}
autoUpdate :: Text -> Route WebApp -> Int -> Int -> Widget
autoUpdate tident geturl ms_delay ms_startdelay = do
#ifdef WITH_OLD_YESOD
let delay = show ms_delay
let startdelay = show ms_startdelay
let ident = tident
#else
let delay = Aeson.String (T.pack (show ms_delay))
let startdelay = Aeson.String (T.pack (show ms_startdelay))
let ident = Aeson.String tident
#endif
addScript $ StaticR longpolling_js
$(widgetFile "notifications/longpolling")
{- Notifier urls are requested by the javascript, to avoid allocation
- of NotificationIds when noscript pages are loaded. This constructs a
- notifier url for a given Route and NotificationBroadcaster.
-}
notifierUrl :: (NotificationId -> Route WebApp) -> Assistant NotificationBroadcaster -> Handler RepPlain
notifierUrl route broadcaster = do
(urlbits, _params) <- renderRoute . route <$> newNotifier broadcaster
webapp <- getYesod
return $ RepPlain $ toContent $ T.concat
[ "/"
, T.intercalate "/" urlbits
, "?auth="
, secretToken webapp
]
getNotifierTransfersR :: Handler RepPlain
getNotifierTransfersR = notifierUrl TransfersR getTransferBroadcaster
getNotifierSideBarR :: Handler RepPlain
getNotifierSideBarR = notifierUrl SideBarR getAlertBroadcaster
getNotifierBuddyListR :: Handler RepPlain
getNotifierBuddyListR = notifierUrl BuddyListR getBuddyListBroadcaster
getNotifierRepoListR :: RepoSelector -> Handler RepPlain
getNotifierRepoListR reposelector = notifierUrl route getRepoListBroadcaster
where
route nid = RepoListR $ RepoListNotificationId nid reposelector
getTransferBroadcaster :: Assistant NotificationBroadcaster
getTransferBroadcaster = transferNotifier <$> getDaemonStatus
getAlertBroadcaster :: Assistant NotificationBroadcaster
getAlertBroadcaster = alertNotifier <$> getDaemonStatus
getBuddyListBroadcaster :: Assistant NotificationBroadcaster
getBuddyListBroadcaster = getBuddyBroadcaster <$> getAssistant buddyList
getRepoListBroadcaster :: Assistant NotificationBroadcaster
getRepoListBroadcaster = syncRemotesNotifier <$> getDaemonStatus