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+{- git-annex assistant webapp data types
+ -
+ - Copyright 2012 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+{-# LANGUAGE TypeFamilies, QuasiQuotes, MultiParamTypeClasses, TemplateHaskell, OverloadedStrings, RankNTypes #-}
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+
+module Assistant.WebApp where
+
+import Assistant.Common
+import Assistant.ThreadedMonad
+import Assistant.DaemonStatus
+import Assistant.ScanRemotes
+import Assistant.TransferQueue
+import Assistant.Alert hiding (Widget)
+import Utility.NotificationBroadcaster
+import Utility.WebApp
+import Utility.Yesod
+
+import Yesod
+import Yesod.Static
+import Text.Hamlet
+import Data.Text (Text, pack, unpack)
+import Control.Concurrent.STM
+
+staticFiles "static"
+
+mkYesodData "WebApp" $(parseRoutesFile "Assistant/WebApp/routes")
+
+data WebApp = WebApp
+ { threadState :: Maybe ThreadState
+ , daemonStatus :: DaemonStatusHandle
+ , scanRemotes :: ScanRemoteMap
+ , transferQueue :: TransferQueue
+ , secretToken :: Text
+ , relDir :: Maybe FilePath
+ , getStatic :: Static
+ , webAppState :: TMVar WebAppState
+ , postFirstRun :: Maybe (IO String)
+ }
+
+data NavBarItem = DashBoard | Config | About
+ deriving (Eq)
+
+navBarName :: NavBarItem -> Text
+navBarName DashBoard = "Dashboard"
+navBarName Config = "Configuration"
+navBarName About = "About"
+
+navBarRoute :: NavBarItem -> Route WebApp
+navBarRoute DashBoard = HomeR
+navBarRoute Config = ConfigR
+navBarRoute About = AboutR
+
+defaultNavBar :: [NavBarItem]
+defaultNavBar = [DashBoard, Config, About]
+
+firstRunNavBar :: [NavBarItem]
+firstRunNavBar = [Config, About]
+
+selectNavBar :: Handler [NavBarItem]
+selectNavBar = ifM (inFirstRun) (return firstRunNavBar, return defaultNavBar)
+
+inFirstRun :: Handler Bool
+inFirstRun = isNothing . relDir <$> getYesod
+
+{- Used instead of defaultContent; highlights the current page if it's
+ - on the navbar. -}
+bootstrap :: Maybe NavBarItem -> Widget -> Handler RepHtml
+bootstrap navbaritem content = do
+ webapp <- getYesod
+ navbar <- map navdetails <$> selectNavBar
+ page <- widgetToPageContent $ do
+ addStylesheet $ StaticR css_bootstrap_css
+ addStylesheet $ StaticR css_bootstrap_responsive_css
+ addScript $ StaticR jquery_full_js
+ addScript $ StaticR js_bootstrap_dropdown_js
+ addScript $ StaticR js_bootstrap_modal_js
+ $(widgetFile "page")
+ hamletToRepHtml $(hamletFile $ hamletTemplate "bootstrap")
+ where
+ navdetails i = (navBarName i, navBarRoute i, Just i == navbaritem)
+
+instance Yesod WebApp where
+ {- Require an auth token be set when accessing any (non-static route) -}
+ isAuthorized _ _ = checkAuthToken secretToken
+
+ {- Add the auth token to every url generated, except static subsite
+ - urls (which can show up in Permission Denied pages). -}
+ joinPath = insertAuthToken secretToken excludeStatic
+ where
+ excludeStatic [] = True
+ excludeStatic (p:_) = p /= "static"
+
+ makeSessionBackend = webAppSessionBackend
+ jsLoader _ = BottomOfHeadBlocking
+
+instance RenderMessage WebApp FormMessage where
+ renderMessage _ _ = defaultFormMessage
+
+type Form x = Html -> MForm WebApp WebApp (FormResult x, Widget)
+
+data WebAppState = WebAppState
+ { showIntro :: Bool
+ }
+
+newWebAppState :: IO (TMVar WebAppState)
+newWebAppState = liftIO $ atomically $
+ newTMVar $ WebAppState { showIntro = True }
+
+getWebAppState :: forall sub. GHandler sub WebApp WebAppState
+getWebAppState = liftIO . atomically . readTMVar =<< webAppState <$> getYesod
+
+modifyWebAppState :: forall sub. (WebAppState -> WebAppState) -> GHandler sub WebApp ()
+modifyWebAppState a = go =<< webAppState <$> getYesod
+ where
+ go s = liftIO $ atomically $ do
+ v <- takeTMVar s
+ putTMVar s $ a v
+
+{- Runs an Annex action from the webapp.
+ -
+ - When the webapp is run outside a git-annex repository, the fallback
+ - value is returned.
+ -}
+runAnnex :: forall sub a. a -> Annex a -> GHandler sub WebApp a
+runAnnex fallback a = maybe (return fallback) go =<< threadState <$> getYesod
+ where
+ go st = liftIO $ runThreadState st a
+
+waitNotifier :: forall sub. (DaemonStatus -> NotificationBroadcaster) -> NotificationId -> GHandler sub WebApp ()
+waitNotifier selector nid = do
+ notifier <- getNotifier selector
+ liftIO $ waitNotification $ notificationHandleFromId notifier nid
+
+newNotifier :: forall sub. (DaemonStatus -> NotificationBroadcaster) -> GHandler sub WebApp NotificationId
+newNotifier selector = do
+ notifier <- getNotifier selector
+ liftIO $ notificationHandleToId <$> newNotificationHandle notifier
+
+getNotifier :: forall sub. (DaemonStatus -> NotificationBroadcaster) -> GHandler sub WebApp NotificationBroadcaster
+getNotifier selector = do
+ webapp <- getYesod
+ liftIO $ selector <$> getDaemonStatus (daemonStatus webapp)
+
+instance PathPiece NotificationId where
+ toPathPiece = pack . show
+ fromPathPiece = readish . unpack
+
+instance PathPiece AlertId where
+ toPathPiece = pack . show
+ fromPathPiece = readish . unpack
+
+{- Adds the auth parameter as a hidden field on a form. Must be put into
+ - every form. -}
+webAppFormAuthToken :: Widget
+webAppFormAuthToken = do
+ webapp <- lift getYesod
+ [whamlet|<input type="hidden" name="auth" value="#{secretToken webapp}">|]