fradrive/src/Handler/ExamOffice/Exams.hs
2021-01-21 13:22:22 +01:00

264 lines
13 KiB
Haskell

{-# OPTIONS_GHC -fno-warn-redundant-constraints #-}
module Handler.ExamOffice.Exams
( getEOExamsR
) where
import Import
import Handler.Utils
import qualified Handler.Utils.ExamOffice.Exam as Exam
import qualified Handler.Utils.ExamOffice.ExternalExam as ExternalExam
import qualified Database.Esqueleto as E
import qualified Database.Esqueleto.Utils as E
import qualified Colonnade
type ExamsTableExpr = ( E.SqlExpr (Maybe (Entity Exam))
`E.InnerJoin` E.SqlExpr (Maybe (Entity Course))
`E.InnerJoin` E.SqlExpr (Maybe (Entity School))
)
`E.FullOuterJoin` E.SqlExpr (Maybe (Entity ExternalExam))
type ExamsTableData = DBRow ( Either (Entity ExternalExam) (Entity Exam, Entity Course, Entity School)
, Natural, Natural
)
queryExam :: Getter ExamsTableExpr (E.SqlExpr (Maybe (Entity Exam)))
queryExam = to $ $(E.sqlIJproj 3 1) . $(E.sqlFOJproj 2 1)
queryCourse :: Getter ExamsTableExpr (E.SqlExpr (Maybe (Entity Course)))
queryCourse = to $ $(E.sqlIJproj 3 2) . $(E.sqlFOJproj 2 1)
querySchool :: Getter ExamsTableExpr (E.SqlExpr (Maybe (Entity School)))
querySchool = to $ $(E.sqlIJproj 3 3) . $(E.sqlFOJproj 2 1)
queryExternalExam :: Getter ExamsTableExpr (E.SqlExpr (Maybe (Entity ExternalExam)))
queryExternalExam = to $(E.sqlFOJproj 2 2)
querySynchronised :: E.SqlExpr (E.Value UserId) -> Getter ExamsTableExpr (E.SqlExpr (E.Value Word64))
querySynchronised office = to . runReader $ do
exam' <- view queryExam
externalExam' <- view queryExternalExam
let
examSynchronised examId = E.subSelectCount . E.from $ \examResult -> do
E.where_ $ examResult E.^. ExamResultExam E.==. examId
E.where_ $ Exam.examOfficeExamResultAuth office examResult
E.where_ $ Exam.resultIsSynced office examResult
externalExamSynchronised externalExamId = E.subSelectCount . E.from $ \externalExamResult -> do
E.where_ $ externalExamResult E.^. ExternalExamResultExam E.==. externalExamId
E.where_ $ ExternalExam.examOfficeExternalExamResultAuth office externalExamResult
E.where_ $ ExternalExam.resultIsSynced office externalExamResult
return $ E.maybe (E.val 0) examSynchronised (exam' E.?. ExamId) E.+. E.maybe (E.val 0) externalExamSynchronised (externalExam' E.?. ExternalExamId)
queryResults :: E.SqlExpr (E.Value UserId) -> Getter ExamsTableExpr (E.SqlExpr (E.Value Word64))
queryResults office = to . runReader $ do
exam' <- view queryExam
externalExam' <- view queryExternalExam
let
results examId = E.subSelectCount . E.from $ \examResult -> do
E.where_ $ examResult E.^. ExamResultExam E.==. examId
E.where_ $ Exam.examOfficeExamResultAuth office examResult
externalResults externalExamId = E.subSelectCount . E.from $ \externalExamResult -> do
E.where_ $ externalExamResult E.^. ExternalExamResultExam E.==. externalExamId
E.where_ $ ExternalExam.examOfficeExternalExamResultAuth office externalExamResult
return $ E.maybe (E.val 0) results (exam' E.?. ExamId) E.+. E.maybe (E.val 0) externalResults (externalExam' E.?. ExternalExamId)
queryIsSynced :: UTCTime -> E.SqlExpr (E.Value UserId) -> Getter ExamsTableExpr (E.SqlExpr (E.Value Bool))
queryIsSynced now office = to . runReader $ do
exam' <- view queryExam
externalExam' <- view queryExternalExam
school' <- view querySchool
let
examSynchronised examId = E.not_ . E.exists . E.from $ \examResult -> do
E.where_ $ examResult E.^. ExamResultExam E.==. examId
E.where_ $ Exam.examOfficeExamResultAuth office examResult
E.where_ . E.not_ $ Exam.resultIsSynced office examResult
externalExamSynchronised externalExamId = E.not_ . E.exists . E.from $ \externalExamResult -> do
E.where_ $ externalExamResult E.^. ExternalExamResultExam E.==. externalExamId
E.where_ $ ExternalExam.examOfficeExternalExamResultAuth office externalExamResult
E.where_ . E.not_ $ ExternalExam.resultIsSynced office externalExamResult
open examClosed' examFinished'
= E.bool (E.maybe E.true (E.>. E.val now) $ E.min examClosed' examFinished')
(E.maybe E.true (E.>. E.val now) examClosed')
(E.maybe E.false (E.==. E.val ExamCloseSeparate) (school' E.?. SchoolExamCloseMode))
return $ E.maybe E.false examSynchronised (exam' E.?. ExamId) E.||. E.maybe2 E.false open (exam' E.?. ExamClosed) (exam' E.?. ExamFinished) E.||. E.maybe E.false externalExamSynchronised (externalExam' E.?. ExternalExamId)
resultExam :: Traversal' ExamsTableData (Entity Exam)
resultExam = _dbrOutput . _1 . _Right . _1
resultCourse :: Traversal' ExamsTableData (Entity Course)
resultCourse = _dbrOutput . _1 . _Right . _2
resultSchool :: Traversal' ExamsTableData (Entity School)
resultSchool = _dbrOutput . _1 . _Right . _3
resultExternalExam :: Traversal' ExamsTableData (Entity ExternalExam)
resultExternalExam = _dbrOutput . _1 . _Left
resultSynchronised, resultResults :: Lens' ExamsTableData Natural
resultSynchronised = _dbrOutput . _2
resultResults = _dbrOutput . _3
resultIsSynced :: Getter ExamsTableData Bool
resultIsSynced = to $ (>=) <$> view resultSynchronised <*> view resultResults
-- | List of all exams where the current user may (in her function as
-- exam-office) access users grades
getEOExamsR :: Handler Html
getEOExamsR = do
uid <- requireAuthId
now <- liftIO getCurrentTime
examsTable <- runDB $ do
let
examLink :: Course -> Exam -> SomeRoute UniWorX
examLink Course{..} Exam{..}
= SomeRoute $ CExamR courseTerm courseSchool courseShorthand examName EGradesR
courseLink :: Course -> SomeRoute UniWorX
courseLink Course{..}
= SomeRoute $ CourseR courseTerm courseSchool courseShorthand CShowR
externalExamLink :: ExternalExam -> SomeRoute UniWorX
externalExamLink ExternalExam{..}
= SomeRoute $ EExamR externalExamTerm externalExamSchool externalExamCourseName externalExamExamName EEGradesR
querySynchronised' = querySynchronised $ E.val uid
queryResults' = queryResults $ E.val uid
queryIsSynced' = queryIsSynced now $ E.val uid
examsDBTable = DBTable{..}
where
dbtSQLQuery = runReaderT $ do
exam <- view queryExam
course <- view queryCourse
school <- view querySchool
externalExam <- view queryExternalExam
synchronised <- view querySynchronised'
results <- view queryResults'
lift $ do
E.on E.false
E.on $ school E.?. SchoolId E.==. course E.?. CourseSchool
E.on $ exam E.?. ExamCourse E.==. course E.?. CourseId
E.where_ $ results E.>. E.val 0
E.where_ $ (E.not_ (E.isNothing $ exam E.?. ExamId) E.&&. E.not_ (E.isNothing $ course E.?. CourseId) E.&&. E.isNothing (externalExam E.?. ExternalExamId))
E.||. ( E.isNothing (exam E.?. ExamId) E.&&. E.isNothing (course E.?. CourseId) E.&&. E.not_ (E.isNothing $ externalExam E.?. ExternalExamId))
return (exam, course, school, externalExam, synchronised, results)
dbtRowKey = views ($(multifocusG 2) queryExam queryExternalExam) (bimap (E.?. ExamId) (E.?. ExternalExamId))
dbtProj :: DBRow _ -> DB ExamsTableData
dbtProj = runReaderT $ (asks . set _dbrOutput) <=< magnify _dbrOutput $ do
exam <- view _1
course <- view _2
school <- view _3
externalExam <- view _4
case (exam, course, school, externalExam) of
(Just exam', Just course', Just school', Nothing) ->
(Right (exam', course', school'),,) <$> view (_5 . _Value . _Integral) <*> view (_6 . _Value . _Integral)
(Nothing, Nothing, Nothing, Just externalExam') ->
(Left externalExam',,) <$> view (_5 . _Value . _Integral) <*> view (_6 . _Value . _Integral)
_other -> return $ error "Got exam & externalExam in same result"
colSynced = Colonnade.singleton (fromSortable . Sortable (Just "synced") $ i18nCell MsgExamSynchronised) $ \x -> flip runReader x $ do
mExam <- preview resultExam
mSchool <- preview resultSchool
if
| Just (Entity _ Exam{examClosed, examFinished}) <- mExam
, Just (Entity _ School{schoolExamCloseMode}) <- mSchool
, bool ((min `on` NTop) examClosed examFinished > NTop (Just now))
(NTop examClosed > NTop (Just now))
$ is _ExamCloseSeparate schoolExamCloseMode
-> return . cell $ toWidget iconNew
| otherwise
-> do
synced <- view resultSynchronised
results <- view resultResults
isSynced <- view resultIsSynced
return $ cell
[whamlet|
$newline never
$if isSynced
#{iconOK}
$else
#{synced}/#{results}
|]
& cellAttrs <>~ [ ("class", "heated")
, ("style", [st|--hotness: #{tshow (heat results synced)}|])
]
dbtColonnade :: Colonnade Sortable _ _
dbtColonnade = mconcat
[ colSynced
, maybeAnchorColonnade ( runMaybeT $ mpreview ($(multifocusG 2) (pre $ resultCourse . _entityVal) (pre $ resultExam . _entityVal) . to (uncurry $ liftA2 examLink) . _Just)
<|> mpreviews (resultExternalExam . _entityVal) externalExamLink
)
$ emptyOpticColonnade (resultExam . _entityVal . _examName <> resultExternalExam . _entityVal . _externalExamExamName) colExamName
, emptyOpticColonnade (resultExam . _entityVal . $(multifocusG 2) _examStart _examEnd) colExamTime
, emptyOpticColonnade (resultExam . _entityVal . _examFinished) colExamFinishedOffice
, emptyOpticColonnade (resultExam . _entityVal . _examClosed) colExamClosed
, maybeAnchorColonnade (previews (resultCourse . _entityVal) courseLink)
$ emptyOpticColonnade (resultCourse . _entityVal . _courseName <> resultExternalExam . _entityVal . _externalExamCourseName) colCourseName
, emptyOpticColonnade (resultCourse . _entityVal . _courseSchool <> resultExternalExam . _entityVal . _externalExamSchool) colSchool
, emptyOpticColonnade (resultCourse . _entityVal . _courseTerm <> resultExternalExam . _entityVal . _externalExamTerm) colTermShort
]
dbtSorting = mconcat
[ singletonMap "synced" . SortColumn $ (E./.) <$> view querySynchronised' <*> view queryResults'
, singletonMap "is-synced" . SortColumn $ view queryIsSynced'
, sortExamName (to $ E.unsafeCoalesce . sequence [views queryExam (E.?. ExamName), views queryExternalExam (E.?. ExternalExamExamName)])
, sortExamTime (queryExam . $(multifocusG 2) (to $ E.joinV . (E.?. ExamStart)) (to $ E.joinV . (E.?. ExamEnd)))
, sortExamFinished (queryExam . to (E.joinV . (E.?. ExamFinished)))
, sortExamClosed (queryExam . to (E.joinV . (E.?. ExamClosed)))
, sortCourseName (to $ E.unsafeCoalesce . sequence [views queryCourse (E.?. CourseName), views queryExternalExam (E.?. ExternalExamCourseName)])
, sortSchool (to $ E.unsafeCoalesce . sequence [views queryCourse (E.?. CourseSchool), views queryExternalExam (E.?. ExternalExamSchool)])
, sortTerm (to $ E.unsafeCoalesce . sequence [views queryCourse (E.?. CourseTerm), views queryExternalExam (E.?. ExternalExamTerm)])
]
dbtFilter = mconcat
[ singletonMap "may-access" . FilterProjected $ \(Any b) r -> (== b) <$> if
| Just exam <- r ^? resultExam . _entityVal
, Just course <- r ^? resultCourse . _entityVal
-> hasReadAccessTo . urlRoute $ examLink course exam
| Just eexam <- r ^? resultExternalExam . _entityVal
-> hasReadAccessTo . urlRoute $ externalExamLink eexam :: DB Bool
| otherwise
-> return $ error "Got neither exam nor externalExam in result"
]
dbtFilterUI = mconcat
[
]
dbtStyle = def -- { dbsFilterLayout = defaultDBSFilterLayout }
dbtParams = def
dbtIdent :: Text
dbtIdent = "exams"
dbtCsvEncode = noCsvEncode
dbtCsvDecode = Nothing
dbtExtraReps = []
examsDBTableValidator = def
& defaultSorting [SortAscBy "is-synced", SortAscBy "exam-time"]
& forceFilter "may-access" (Any True)
dbTableWidget' examsDBTableValidator examsDBTable
siteLayoutMsg MsgMenuExamList $ do
setTitleI MsgMenuExamList
examsTable