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Diffstat (limited to 'Assistant/WebApp.hs')
-rw-r--r-- | Assistant/WebApp.hs | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/Assistant/WebApp.hs b/Assistant/WebApp.hs new file mode 100644 index 000000000..cdfab0993 --- /dev/null +++ b/Assistant/WebApp.hs @@ -0,0 +1,162 @@ +{- 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}">|] |