58 lines
2.8 KiB
Haskell
58 lines
2.8 KiB
Haskell
module Jobs.Handler.QueueNotification
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( dispatchJobQueueNotification
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) where
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import Import
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import Jobs.Types
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import qualified Database.Esqueleto as E
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import Utils.Sql
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import Jobs.Queue
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dispatchJobQueueNotification :: Notification -> Handler ()
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dispatchJobQueueNotification jNotification = runDBJobs . setSerializable $ do
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candidates <- hoist lift $ determineNotificationCandidates jNotification
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nClass <- hoist lift $ classifyNotification jNotification
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mapM_ (queueDBJob . flip JobSendNotification jNotification) $ do
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Entity uid User{userNotificationSettings} <- candidates
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guard $ notificationAllowed userNotificationSettings nClass
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return uid
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determineNotificationCandidates :: Notification -> DB [Entity User]
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determineNotificationCandidates NotificationSubmissionRated{..} = E.select . E.from $ \(user `E.InnerJoin` submissionUser) -> do
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E.on $ user E.^. UserId E.==. submissionUser E.^. SubmissionUserUser
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E.where_ $ submissionUser E.^. SubmissionUserSubmission E.==. E.val nSubmission
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return user
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determineNotificationCandidates NotificationSheetActive{..} = E.select . E.from $ \(user `E.InnerJoin` courseParticipant `E.InnerJoin` sheet) -> do
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E.on $ sheet E.^. SheetCourse E.==. courseParticipant E.^. CourseParticipantCourse
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E.on $ user E.^. UserId E.==. courseParticipant E.^. CourseParticipantUser
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E.where_ $ sheet E.^. SheetId E.==. E.val nSheet
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return user
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determineNotificationCandidates NotificationSheetSoonInactive{..} = E.select . E.from $ \(user `E.InnerJoin` courseParticipant `E.InnerJoin` sheet) -> do
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E.on $ sheet E.^. SheetCourse E.==. courseParticipant E.^. CourseParticipantCourse
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E.on $ user E.^. UserId E.==. courseParticipant E.^. CourseParticipantUser
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E.where_ $ sheet E.^. SheetId E.==. E.val nSheet
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return user
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determineNotificationCandidates NotificationSheetInactive{..} = E.select . E.from $ \(user `E.InnerJoin` lecturer `E.InnerJoin` sheet) -> do
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E.on $ lecturer E.^. LecturerCourse E.==. sheet E.^. SheetCourse
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E.on $ lecturer E.^. LecturerUser E.==. user E.^. UserId
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E.where_ $ sheet E.^. SheetId E.==. E.val nSheet
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return user
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determineNotificationCandidates NotificationCorrectionsAssigned{..} = selectList [UserId ==. nUser] []
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classifyNotification :: Notification -> DB NotificationTrigger
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classifyNotification NotificationSubmissionRated{..} = do
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Sheet{sheetType} <- belongsToJust submissionSheet =<< getJust nSubmission
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return $ case sheetType of
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NotGraded -> NTSubmissionRated
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_other -> NTSubmissionRatedGraded
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classifyNotification NotificationSheetActive{} = return NTSheetActive
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classifyNotification NotificationSheetSoonInactive{} = return NTSheetSoonInactive
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classifyNotification NotificationSheetInactive{} = return NTSheetInactive
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classifyNotification NotificationCorrectionsAssigned{} = return NTCorrectionsAssigned
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