clean up and refactor

Handler/Graph.hs

@@ -71,7 +71,9 @@ submissionsToJSON :: ((Entity Submission) -> Bool) -> Text -> Handler Value
 submissionsToJSON condition challengeName = do
   (Entity challengeId _) <- runDB $ getBy404 $ UniqueName challengeName
 
-  (_, entries) <- getLeaderboardEntriesByCriterion challengeId condition (\(TableEntry (Entity submissionId _) _ _ _ _ _) -> submissionId)
+  (_, entries, _) <- getLeaderboardEntriesByCriterion challengeId
+                                                     condition
+                                                     (\(TableEntry (Entity submissionId _) _ _ _ _ _) -> submissionId)
 
   let naturalRange = getNaturalRange entries
   let submissionIds = map leaderboardBestSubmissionId entries

Handler/Presentation.hs

@@ -6,7 +6,6 @@ import Handler.ShowChallenge
 import Handler.Tables
 
 import qualified Yesod.Table as Table
-import Yesod.Table (Table)
 
 import Text.Hamlet (hamletFile)
 
@@ -30,7 +29,7 @@ getPresentation4RealR :: Handler Html
 getPresentation4RealR = do
   readme <- challengeReadme sampleChallengeName
 
-  challengeEnt@(Entity challengeId challenge) <- runDB $ getBy404 $ UniqueName sampleChallengeName
+  (Entity challengeId challenge) <- runDB $ getBy404 $ UniqueName sampleChallengeName
 
   (Just (Entity sampleUserId _)) <- runDB $ getBy $ UniqueUser sampleUserIdent
   let condition = (\(Entity _ submission) -> (submissionSubmitter submission == sampleUserId))
@@ -54,11 +53,11 @@ getPresentationDATeCH2017R = do
   presentationLayout $(widgetFile "presentation-datech-2017")
 
 
+getSampleLeaderboard :: Text -> HandlerFor App (WidgetT App IO ())
 getSampleLeaderboard name = do
-  challengeEnt@(Entity challengeId challenge) <- runDB $ getBy404 $ UniqueName name
+  (Entity challengeId challenge) <- runDB $ getBy404 $ UniqueName name
 
-  Just repo <- runDB $ get $ challengePublicRepo challenge
+  (test, leaderboard, _) <- getLeaderboardEntries challengeId
-  (test, leaderboard) <- getLeaderboardEntries challengeId
   let leaderboardWithRanks = zip [1..] (take 10 leaderboard)
 
   app <- getYesod
@@ -66,13 +65,11 @@ getSampleLeaderboard name = do
 
   challengeRepo <- runDB $ get404 $ challengePublicRepo challenge
 
-  return $ Table.buildBootstrap (leaderboardTable Nothing (challengeName challenge) scheme challengeRepo test) leaderboardWithRanks
+  return $ Table.buildBootstrap (leaderboardTable Nothing
+                                                  (challengeName challenge)
+                                                  scheme challengeRepo test)
+                                leaderboardWithRanks
 
 presentationLayout widget = do
-  master <- getYesod
-  mmsg <- getMessage
-
-  maybeUser <- maybeAuth
-
   pc <- widgetToPageContent widget
   withUrlRenderer $(hamletFile "templates/presentation-layout.hamlet")

Handler/ShowChallenge.hs

@@ -44,7 +44,7 @@ getShowChallengeR :: Text -> Handler Html
 getShowChallengeR name = do
   (Entity challengeId challenge) <- runDB $ getBy404 $ UniqueName name
   Just repo <- runDB $ get $ challengePublicRepo challenge
-  (mainTest, leaderboard) <- getLeaderboardEntries challengeId
+  (mainTest, leaderboard, _) <- getLeaderboardEntries challengeId
   mauth <- maybeAuth
   let muserId = (\(Entity uid _) -> uid) <$> mauth
 

Handler/Tables.hs

@@ -132,17 +132,23 @@ getAuxSubmissionEnts testId evaluationMaps = map processEvaluationMap evaluation
                                                                                        Nothing -> []))
 
 
-getLeaderboardEntriesByCriterion :: (Ord a) => Key Challenge -> ((Entity Submission) -> Bool) -> (TableEntry -> a) -> Handler (Test, [LeaderboardEntry])
+getLeaderboardEntriesByCriterion :: (Ord a) => Key Challenge
+                                             -> ((Entity Submission) -> Bool)
+                                             -> (TableEntry -> a)
+                                             -> Handler (Test, [LeaderboardEntry], ([TableEntry], [Entity Test]))
 getLeaderboardEntriesByCriterion challengeId condition selector = do
-  (evaluationMaps, tests) <- getChallengeSubmissionInfos condition challengeId
+  infos@(evaluationMaps, tests) <- getChallengeSubmissionInfos condition challengeId
   let mainTestEnt = getMainTest tests
   let (Entity mainTestId mainTest) = mainTestEnt
   let auxItems = map (\i -> (selector i, [i])) $ filter (\(TableEntry _ _ _ em _ _) -> member mainTestId em) $ evaluationMaps
   let auxItemsMap = Map.fromListWith (++) auxItems
   let entryComparator a b = (compareResult mainTest) (evaluationScore $ leaderboardEvaluation a) (evaluationScore $ leaderboardEvaluation b)
-  entries' <- mapM (toLeaderboardEntry challengeId mainTestEnt) $ filter (\ll -> not (null ll)) $ map snd $ Map.toList auxItemsMap
+  entries' <- mapM (toLeaderboardEntry challengeId mainTestEnt)
+             $ filter (\ll -> not (null ll))
+             $ map snd
+             $ Map.toList auxItemsMap
   let entries = sortBy (flip entryComparator) entries'
-  return (mainTest, entries)
+  return (mainTest, entries, infos)
 
 toLeaderboardEntry :: (BaseBackend (YesodPersistBackend site) ~ SqlBackend, PersistQueryRead (YesodPersistBackend site), YesodPersist site, Foldable t) => Key Challenge -> Entity Test -> t TableEntry -> HandlerFor site LeaderboardEntry
 toLeaderboardEntry challengeId (Entity mainTestId mainTest) ss = do
@@ -155,7 +161,9 @@ toLeaderboardEntry challengeId (Entity mainTestId mainTest) ss = do
   parameters <- runDB $ selectList [ParameterVariant ==. (entityKey bestVariant)] [Asc ParameterName]
 
   -- get all user submissions, including hidden ones
-  allUserSubmissions <- runDB $ selectList [SubmissionChallenge ==. challengeId, SubmissionSubmitter ==. entityKey user] [Desc SubmissionStamp]
+  allUserSubmissions <- runDB $ selectList [SubmissionChallenge ==. challengeId,
+                                           SubmissionSubmitter ==. entityKey user]
+                                          [Desc SubmissionStamp]
   return $ LeaderboardEntry {
               leaderboardUser = entityVal user,
               leaderboardUserId = entityKey user,
@@ -170,8 +178,11 @@ toLeaderboardEntry challengeId (Entity mainTestId mainTest) ss = do
               }
      where submissionComparator (TableEntry _  _  _ em1 _ _) (TableEntry _  _ _ em2 _ _) = (compareResult mainTest) (evaluationScore (em1 Map.! mainTestId)) (evaluationScore (em2 Map.! mainTestId))
 
-getLeaderboardEntries :: Key Challenge -> Handler (Test, [LeaderboardEntry])
+getLeaderboardEntries :: Key Challenge -> Handler (Test, [LeaderboardEntry], ([TableEntry], [Entity Test]))
-getLeaderboardEntries challengeId = getLeaderboardEntriesByCriterion challengeId (const True) (\(TableEntry _ _ (Entity userId _) _ _ _) -> userId)
+getLeaderboardEntries challengeId =
+  getLeaderboardEntriesByCriterion challengeId
+                                   (const True)
+                                   (\(TableEntry _ _ (Entity userId _) _ _ _) -> userId)
 
 compareResult :: Test -> Maybe Double -> Maybe Double -> Ordering
 compareResult test (Just x) (Just y) = (compareFun $ getMetricOrdering $ testMetric test) x y
@@ -183,9 +194,13 @@ compareFun :: MetricOrdering -> Double -> Double -> Ordering
 compareFun TheLowerTheBetter = flip compare
 compareFun TheHigherTheBetter = compare
 
-getChallengeSubmissionInfos :: ((Entity Submission) -> Bool) -> Key Challenge -> Handler ([TableEntry], [Entity Test])
+getChallengeSubmissionInfos :: ((Entity Submission) -> Bool)
+                              -> Key Challenge
+                              -> Handler ([TableEntry], [Entity Test])
 getChallengeSubmissionInfos condition challengeId = do
-  allSubmissions <- runDB $ selectList [SubmissionChallenge ==. challengeId, SubmissionIsHidden !=. Just True] [Desc SubmissionStamp]
+  allSubmissions <- runDB $ selectList [SubmissionChallenge ==. challengeId,
+                                       SubmissionIsHidden !=. Just True]
+                                      [Desc SubmissionStamp]
   let submissions = filter condition allSubmissions
   tests <- runDB $ selectList [TestChallenge ==. challengeId, TestActive ==. True] []
   evaluationMaps <- mapM getEvaluationMapForSubmission submissions