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{- git-annex assistant webapp notifications
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE TypeFamilies, QuasiQuotes, MultiParamTypeClasses, TemplateHaskell, OverloadedStrings, RankNTypes #-}
module Assistant.WebApp.Notifications where
import Assistant.Common
import Assistant.WebApp
import Assistant.DaemonStatus
import Utility.NotificationBroadcaster
import Utility.Yesod
import Yesod
import Data.Text (Text)
import qualified Data.Text as T
{- 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 ident geturl ms_delay ms_startdelay = do
let delay = show ms_delay
let startdelay = show ms_startdelay
addScript $ StaticR longpolling_js
$(widgetFile "longpolling")
{- Notifier urls are requested by the javascript, to avoid allocation
- of NotificationIds when noscript pages are loaded. This constructs a
- notifier url for a given Route and NotificationBroadcaster.
-}
notifierUrl :: (NotificationId -> Route WebApp) -> (DaemonStatus -> NotificationBroadcaster) -> Handler RepPlain
notifierUrl route selector = do
(urlbits, _params) <- renderRoute . route <$> newNotifier selector
webapp <- getYesod
return $ RepPlain $ toContent $ T.concat
[ "/"
, T.intercalate "/" urlbits
, "?auth="
, secretToken webapp
]
getNotifierTransfersR :: Handler RepPlain
getNotifierTransfersR = notifierUrl TransfersR transferNotifier
getNotifierSideBarR :: Handler RepPlain
getNotifierSideBarR = notifierUrl SideBarR alertNotifier
|
