349 lines
20 KiB
Haskell
349 lines
20 KiB
Haskell
module Handler.News where
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import Import
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import Handler.Utils
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import Handler.Utils.News
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import Handler.SystemMessage
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import qualified Data.Map as Map
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import Database.Esqueleto.Utils.TH
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import qualified Database.Esqueleto as E
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import qualified Database.Esqueleto.Utils as E
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import qualified Data.Conduit.List as C (consume, mapMaybeM)
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import qualified Data.Conduit.Combinators as C
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import qualified Data.Conduit.Lift as C
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import qualified Data.HashMap.Strict as HashMap
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import Handler.Utils.Exam (showExamOccurrenceRoom)
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getNewsR :: Handler Html
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getNewsR = do
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muid <- maybeAuthId
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defaultLayout $ do
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setTitleI MsgNewsHeading
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newsSystemMessages
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when (is _Nothing muid) $
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notificationWidget NotificationBroad Info $(i18nWidgetFile "pitch")
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case muid of
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Just uid -> do
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newsUpcomingExams uid
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newsUpcomingSheets uid
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Nothing ->
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$(i18nWidgetFile "unauth-news")
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newsSystemMessages :: Widget
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newsSystemMessages = do
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now <- liftIO getCurrentTime
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showHidden <- isJust <$> lookupGetParam (toPathPiece GetHidden)
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let tellShown smId = liftHandler $ do
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cID <- encrypt smId :: Handler CryptoUUIDSystemMessage
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tellRegisteredCookieJson CookieSystemMessageState . MergeHashMap $
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HashMap.singleton cID mempty{ userSystemMessageShown = Just now }
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mkHideForm smId SystemMessage{..} = liftHandler $ do
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cID <- encrypt smId
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hidden <- getSystemMessageState smId <&> \UserSystemMessageState{..} -> userSystemMessageHidden > Just systemMessageLastUnhide
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(btnView, btnEnctype) <- generateFormPost . buttonForm' $ bool [BtnSystemMessageHide] [BtnSystemMessageUnhide] hidden
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return $ wrapForm btnView def
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{ formSubmit = FormNoSubmit
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, formEncoding = btnEnctype
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, formAction = Just . SomeRoute $ MessageHideR cID
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, formAttrs = [("class", "form--inline")]
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}
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checkHidden (smId, sm@SystemMessage{..}, trans) = do
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hidden <- getSystemMessageState smId <&> \UserSystemMessageState{..} -> userSystemMessageHidden > Just systemMessageLastUnhide
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tell $ Any hidden
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return $ guardOn (not hidden || showHidden) (smId, sm, trans, hidden)
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(messages', Any anyHidden) <- liftHandler . runDB . runConduit . C.runWriterLC $
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transPipe lift (selectKeys [] [])
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.| C.filterM (lift . hasReadAccessTo . MessageR <=< encrypt)
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.| transPipe lift (C.mapMaybeM $ \smId -> fmap (\args@(sm, _) -> (smId, sm, systemMessageToTranslation smId args)) <$> getSystemMessage smId)
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.| C.filter (\(_, SystemMessage{..}, _) -> NTop systemMessageFrom <= NTop (Just now) && NTop (Just now) < NTop systemMessageTo)
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.| C.mapMaybeM checkHidden
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.| C.iterM (\(smId, _, _, _) -> tellShown smId)
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.| C.mapM (\(smId, sm@SystemMessage{..}, trans, hidden) -> (sm, trans, hidden,,) <$> formatTime SelFormatDateTime (maybe id max systemMessageFrom systemMessageLastChanged) <*> mkHideForm smId sm)
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.| C.consume
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let messages = sortOn (\(SystemMessage{..}, _, _, _, _) -> (Down systemMessageManualPriority, Down $ maybe id max systemMessageFrom systemMessageLastChanged, systemMessageSeverity)) messages'
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hiddenUrl <- toTextUrl (NewsR, [(toPathPiece GetHidden, "")])
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unless (not anyHidden && null messages)
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$(widgetFile "news/system-messages")
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newsUpcomingSheets :: UserId -> Widget
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newsUpcomingSheets uid = do
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cTime <- liftIO getCurrentTime
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let noActiveToCutoff = toMidnight . addGregorianDurationRollOver (scaleCalendarDiffDays (-1) calendarMonth) $ utctDay cTime
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let tableData :: E.LeftOuterJoin
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(E.InnerJoin (E.InnerJoin (E.SqlExpr (Entity CourseParticipant)) (E.SqlExpr (Entity Course))) (E.SqlExpr (Entity Sheet)))
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(E.InnerJoin (E.SqlExpr (Maybe (Entity Submission))) (E.SqlExpr (Maybe (Entity SubmissionUser))))
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-> E.SqlQuery ( E.SqlExpr (E.Value (Key Term))
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, E.SqlExpr (E.Value SchoolId)
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, E.SqlExpr (E.Value CourseShorthand)
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, E.SqlExpr (E.Value SheetName)
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, E.SqlExpr (E.Value (Maybe UTCTime))
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, E.SqlExpr (E.Value (Maybe SubmissionId)))
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tableData ((participant `E.InnerJoin` course `E.InnerJoin` sheet) `E.LeftOuterJoin` (submission `E.InnerJoin` subuser)) = do
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E.on $ submission E.?. SubmissionId E.==. subuser E.?. SubmissionUserSubmission
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E.&&. E.just (E.val uid) E.==. subuser E.?. SubmissionUserUser
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E.on $ submission E.?. SubmissionSheet E.==. E.just(sheet E.^. SheetId)
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E.on $ course E.^. CourseId E.==. sheet E.^. SheetCourse
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E.on $ course E.^. CourseId E.==. participant E.^. CourseParticipantCourse
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let showSheetNoActiveTo =
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E.maybe E.false (E.>=. E.val noActiveToCutoff) (sheet E.^. SheetActiveFrom)
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E.||. E.maybe E.false (E.>=. E.val noActiveToCutoff) (sheet E.^. SheetVisibleFrom)
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E.||. E.maybe E.false (E.>=. E.val noActiveToCutoff) (sheet E.^. SheetHintFrom)
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E.||. E.maybe E.false (E.>=. E.val noActiveToCutoff) (sheet E.^. SheetSolutionFrom)
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E.where_ $ participant E.^. CourseParticipantUser E.==. E.val uid
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E.&&. participant E.^. CourseParticipantState E.==. E.val CourseParticipantActive
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E.&&. E.maybe showSheetNoActiveTo (E.>=. E.val cTime) (sheet E.^. SheetActiveTo)
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return
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( course E.^. CourseTerm
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, course E.^. CourseSchool
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, course E.^. CourseShorthand
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, sheet E.^. SheetName
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, sheet E.^. SheetActiveTo
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, submission E.?. SubmissionId
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)
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colonnade :: Colonnade Sortable (DBRow ( E.Value (Key Term)
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, E.Value SchoolId
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, E.Value CourseShorthand
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, E.Value SheetName
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, E.Value (Maybe UTCTime)
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, E.Value (Maybe SubmissionId)
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))
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(DBCell Handler ())
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colonnade = mconcat
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[ -- dbRow
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-- TOOD: sortable (Just "term") (textCell MsgTerm) $ \DBRow{ dbrOutput=(view _1 -> E.Value tid) } ->
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sortable (Just "term") (i18nCell MsgTerm) $ \DBRow{ dbrOutput=(E.Value tid,_,_,_,_,_) } ->
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textCell $ toMessage tid
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, sortable (Just "school") (i18nCell MsgCourseSchool) $ \DBRow{ dbrOutput=(_,E.Value ssh,_,_,_,_) } ->
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textCell $ toMessage ssh
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, sortable (Just "course") (i18nCell MsgCourse) $ \DBRow{ dbrOutput=(E.Value tid, E.Value ssh, E.Value csh, _, _, _) } ->
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anchorCell (CourseR tid ssh csh CShowR) csh
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, sortable (Just "sheet") (i18nCell MsgSheet) $ \DBRow{ dbrOutput=(E.Value tid, E.Value ssh, E.Value csh, E.Value shn, _, _) } ->
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anchorCell (CSheetR tid ssh csh shn SShowR) shn
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, sortable (Just "deadline") (i18nCell MsgDeadline) $ \DBRow{ dbrOutput=(_, _, _, _, E.Value mDeadline, _) } ->
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maybe mempty (cell . formatTimeW SelFormatDateTime) mDeadline
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, sortable (Just "done") (i18nCell MsgDone) $ \DBRow{ dbrOutput=(E.Value tid, E.Value ssh, E.Value csh, E.Value shn, _, E.Value mbsid) } ->
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case mbsid of
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Nothing -> cell $ do
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let submitRoute = CSheetR tid ssh csh shn SubmissionNewR
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whenM (hasWriteAccessTo submitRoute) $
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modal [whamlet|_{MsgMenuSubmissionNew}|] . Left $ SomeRoute submitRoute
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(Just sid) -> anchorCellM (CSubmissionR tid ssh csh shn <$> encrypt sid <*> pure SubShowR)
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(hasTickmark True)
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]
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let validator = def & defaultSorting [SortDescBy "done", SortAscBy "deadline"]
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& forceFilter "may-access" (Any True)
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sheetTable <- liftHandler . runDB $ dbTableWidget' validator DBTable
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{ dbtSQLQuery = tableData
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, dbtRowKey = \((_ `E.InnerJoin` _ `E.InnerJoin` sheet) `E.LeftOuterJoin` _) -> sheet E.^. SheetId
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, dbtColonnade = colonnade
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, dbtProj = return
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, dbtSorting = Map.fromList
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[ ( "term"
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, SortColumn $ \(_ `E.InnerJoin` course `E.InnerJoin` _ `E.LeftOuterJoin` _) -> course E.^. CourseTerm
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)
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, ( "school"
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, SortColumn $ \(_ `E.InnerJoin` course `E.InnerJoin` _ `E.LeftOuterJoin` _) -> course E.^. CourseSchool
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)
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, ( "course"
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, SortColumn $ \(_ `E.InnerJoin` course `E.InnerJoin` _ `E.LeftOuterJoin` _) -> course E.^. CourseShorthand
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)
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, ( "sheet"
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, SortColumn $ \(_ `E.InnerJoin` _ `E.InnerJoin` sheet `E.LeftOuterJoin` _) -> sheet E.^. SheetName
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)
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, ( "deadline"
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, SortColumn $ \(_ `E.InnerJoin` _ `E.InnerJoin` sheet `E.LeftOuterJoin` _) -> sheet E.^. SheetActiveTo
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)
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, ( "done"
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, SortColumn $ \(_ `E.InnerJoin` _ `E.InnerJoin` _ `E.LeftOuterJoin` (subm `E.InnerJoin` _)) -> E.isNothing $ subm E.?. SubmissionId
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)
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]
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, dbtFilter = mconcat
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[ singletonMap "may-access" . FilterProjected $ \(Any b) DBRow{..} ->
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let (E.Value tid, E.Value ssh, E.Value csh, E.Value shn, _, _) = dbrOutput :: ( E.Value (Key Term)
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, E.Value SchoolId
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, E.Value CourseShorthand
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, E.Value SheetName
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, E.Value (Maybe UTCTime)
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, E.Value (Maybe SubmissionId)
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)
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in (==b) <$> hasReadAccessTo (CSheetR tid ssh csh shn SShowR) :: DB Bool
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]
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, dbtFilterUI = mempty
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, dbtStyle = def { dbsEmptyStyle = DBESNoHeading, dbsEmptyMessage = MsgNoUpcomingSheetDeadlines }
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, dbtParams = def
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, dbtIdent = "upcoming-sheets" :: Text
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, dbtCsvEncode = noCsvEncode
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, dbtCsvDecode = Nothing
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, dbtExtraReps = []
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}
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$(widgetFile "news/upcomingSheets")
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newsUpcomingExams :: UserId -> Widget
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newsUpcomingExams uid = do
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now <- liftIO getCurrentTime
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((Any hasExams, examTable), warningDays) <- liftHandler . runDB $ do
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User {userWarningDays} <- get404 uid
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let fortnight = addUTCTime userWarningDays now
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let -- code copied and slightly adapted from Handler.Course.getCShowR:
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examDBTable = DBTable{..}
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where
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-- for ease of refactoring:
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queryCourse = $(sqlIJproj 2 1) . $(sqlLOJproj 3 1)
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queryExam = $(sqlIJproj 2 2) . $(sqlLOJproj 3 1)
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lensCourse = _1
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lensExam = _2
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lensRegister = _3 . _Just
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lensOccurrence = _4 . _Just
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lensShowRoom = _5 . _Value
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dbtSQLQuery ((course `E.InnerJoin` exam) `E.LeftOuterJoin` register `E.LeftOuterJoin` occurrence) = do
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E.on $ register E.?. ExamRegistrationOccurrence E.==. E.just (occurrence E.?. ExamOccurrenceId)
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E.on $ register E.?. ExamRegistrationExam E.==. E.just (exam E.^. ExamId)
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E.&&. register E.?. ExamRegistrationUser E.==. E.just (E.val uid)
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E.on $ course E.^. CourseId E.==. exam E.^. ExamCourse
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E.where_ $ E.exists $ E.from $ \participant ->
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E.where_ $ participant E.^. CourseParticipantUser E.==. E.val uid
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E.&&. participant E.^. CourseParticipantCourse E.==. course E.^. CourseId
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E.&&. participant E.^. CourseParticipantState E.==. E.val CourseParticipantActive
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let regToWithinFortnight = exam E.^. ExamRegisterTo E.<=. E.just (E.val fortnight)
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E.&&. exam E.^. ExamRegisterTo E.>=. E.just (E.val now)
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E.&&. E.isNothing (register E.?. ExamRegistrationId)
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startExamFortnight = exam E.^. ExamStart E.<=. E.just (E.val fortnight)
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E.&&. exam E.^. ExamStart E.>=. E.just (E.val now)
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E.&&. E.isJust (register E.?. ExamRegistrationId)
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startOccurFortnight = occurrence E.?. ExamOccurrenceStart E.<=. E.just (E.val fortnight)
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E.&&. occurrence E.?. ExamOccurrenceStart E.>=. E.just (E.val now)
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E.&&. E.isJust (register E.?. ExamRegistrationId)
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earliestOccurrence = E.subSelectMaybe $ E.from $ \occ -> do
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E.where_ $ occ E.^. ExamOccurrenceExam E.==. exam E.^. ExamId
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E.&&. occ E.^. ExamOccurrenceStart E.>=. E.val now
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return $ E.min_ $ occ E.^. ExamOccurrenceStart
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startEarliest = E.isNothing (occurrence E.?. ExamOccurrenceId)
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E.&&. earliestOccurrence E.<=. E.just (E.val fortnight)
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-- E.&&. earliestOccurrence E.>=. E.just (E.val now)
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E.where_ $ regToWithinFortnight E.||. startExamFortnight E.||. startOccurFortnight E.||. startEarliest
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let showRoom = showExamOccurrenceRoom (E.val uid) occurrence
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E.||. E.maybe E.false E.not_ (occurrence E.?. ExamOccurrenceRoomHidden)
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return (course, exam, register, occurrence, showRoom)
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dbtRowKey = queryExam >>> (E.^. ExamId)
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dbtProj = return
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dbtColonnade = dbColonnade $ mconcat
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[ sortable (Just "term") (i18nCell MsgTerm) $ \DBRow{ dbrOutput = view lensCourse -> Entity _ Course{..} } ->
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msgCell courseTerm
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, sortable (Just "school") (i18nCell MsgCourseSchool) $ \DBRow{ dbrOutput = view lensCourse -> Entity _ Course{..} } ->
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msgCell courseSchool
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, sortable (Just "course") (i18nCell MsgCourse) $ \DBRow{ dbrOutput = view lensCourse -> Entity _ Course{..} } ->
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anchorCell (CourseR courseTerm courseSchool courseShorthand CShowR) (toWgt courseShorthand)
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-- continue here
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, sortable (Just "name") (i18nCell MsgExamName) $ \DBRow{ dbrOutput } -> do
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let Entity _ Exam{..} = view lensExam dbrOutput
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Entity _ Course{..} = view lensCourse dbrOutput
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indicatorCell <> anchorCell (CExamR courseTerm courseSchool courseShorthand examName EShowR) examName
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, sortable (Just "register-from") (i18nCell MsgExamRegisterFrom) $ \DBRow { dbrOutput = view lensExam -> Entity _ Exam{..} } -> maybe mempty dateTimeCell examRegisterFrom
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, sortable (Just "register-to") (i18nCell MsgExamRegisterTo) $ \DBRow { dbrOutput = view lensExam -> Entity _ Exam{..} } -> maybe mempty dateTimeCell examRegisterTo
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, sortable (Just "time") (i18nCell MsgExamTime) $ \DBRow{ dbrOutput } ->
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if | Just (Entity _ ExamOccurrence{..}) <- preview lensOccurrence dbrOutput
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-> cell $ formatTimeRangeW SelFormatDateTime examOccurrenceStart examOccurrenceEnd
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| Entity _ Exam{..} <- view lensExam dbrOutput
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, Just start <- examStart -> cell $ formatTimeRangeW SelFormatDateTime start examEnd
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| otherwise -> mempty
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{- NOTE: We do not want thoughtless exam registrations, since many people click "register" and don't show up, causing logistic problems.
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Hence we force them here to click twice. Maybe add a captcha where users have to distinguish pictures showing pink elephants and course lecturers.
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, sortable Nothing mempty $ \DBRow{ dbrOutput } -> sqlCell $ do
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let Entity eId Exam{..} = view lensExam dbrOutput
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Entity _ Course{..} = view lensCourse dbrOutput
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mayRegister <- (== Authorized) <$> evalAccessDB (CExamR courseTerm courseSchool courseShorthand examName ERegisterR) True
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isRegistered <- existsBy $ UniqueExamRegistration eId uid
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if
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| mayRegister -> do
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(examRegisterForm, examRegisterEnctype) <- liftHandler . generateFormPost . buttonForm' $ bool [BtnRegister] [BtnDeregister] isRegistered
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return $ wrapForm examRegisterForm def
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{ formAction = Just . SomeRoute $ CExamR courseTerm courseSchool courseShorthand examName ERegisterR
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, formEncoding = examRegisterEnctype
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, formSubmit = FormNoSubmit
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}
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| isRegistered -> return [whamlet|_{MsgExamRegistered}|]
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| otherwise -> return mempty
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-}
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, sortable (Just "registered") (i18nCell MsgExamRegistration ) $ \DBRow{ dbrOutput } -> sqlCell $ do
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let Entity _ Exam{..} = view lensExam dbrOutput
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Entity _ Course{..} = view lensCourse dbrOutput
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mayRegister <- (== Authorized) <$> evalAccessDB (CExamR courseTerm courseSchool courseShorthand examName ERegisterR) True
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let isRegistered = has lensRegister dbrOutput
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label = bool MsgExamNotRegistered MsgExamRegistered isRegistered
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examUrl = CExamR courseTerm courseSchool courseShorthand examName EShowR
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if | mayRegister -> return $ simpleLinkI (SomeMessage label) examUrl
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| otherwise -> return [whamlet|_{label}|]
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, sortable (toNothingS "occurrence") (i18nCell MsgExamOccurrence) $ \DBRow{ dbrOutput } ->
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if | Just (Entity _ ExamOccurrence{..}) <- preview lensOccurrence dbrOutput
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-> if | view lensShowRoom dbrOutput -> maybe (i18nCell MsgExamOccurrenceRoomIsUnset) roomReferenceCell examOccurrenceRoom
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| otherwise -> i18nCell MsgExamOccurrenceRoomIsHidden & addCellClass ("explanation" :: Text)
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| otherwise -> mempty
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]
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dbtSorting = Map.fromList
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[ ("demo-both", SortColumn $ queryCourse &&& queryExam >>> (\(_course,exam)-> exam E.^. ExamName))
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, ("term", SortColumn $ queryCourse >>> (E.^. CourseTerm ))
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, ("school", SortColumn $ queryCourse >>> (E.^. CourseSchool ))
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, ("course", SortColumn $ queryCourse >>> (E.^. CourseShorthand ))
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, ("name", SortColumn $ queryExam >>> (E.^. ExamName ))
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, ("time", SortColumn $ queryExam >>> (E.^. ExamStart ))
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, ("register-from", SortColumn $ queryExam >>> (E.^. ExamRegisterFrom ))
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, ("register-to", SortColumn $ queryExam >>> (E.^. ExamRegisterTo ))
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, ("visible", SortColumn $ queryExam >>> (E.^. ExamVisibleFrom ))
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, ("registered", SortColumn $ queryExam >>> (\exam ->
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E.exists $ E.from $ \registration -> do
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E.where_ $ registration E.^. ExamRegistrationUser E.==. E.val uid
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E.where_ $ registration E.^. ExamRegistrationExam E.==. exam E.^. ExamId
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))
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]
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dbtFilter = mconcat
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[ singletonMap "may-access" . FilterProjected $ \(Any b) DBRow{..} ->
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let Entity _ Exam{..} = view lensExam dbrOutput
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Entity _ Course{..} = view lensCourse dbrOutput
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in (==b) <$> hasReadAccessTo (CExamR courseTerm courseSchool courseShorthand examName EShowR) :: DB Bool
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]
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dbtFilterUI = const mempty
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dbtStyle = def
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dbtParams = def
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dbtIdent :: Text
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dbtIdent = "exams"
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dbtCsvEncode = noCsvEncode
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dbtCsvDecode = Nothing
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dbtExtraReps = []
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examDBTableValidator = def
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& defaultSorting [SortAscBy "time"]
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& forceFilter "may-access" (Any True)
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(, userWarningDays) <$> dbTable examDBTableValidator examDBTable
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$(widgetFile "news/upcomingExams")
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