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{-# LANGUAGE TupleSections #-}
module Data.Classes ( zeroScores
, testScores
, lookupSariulClass) where
import Types.Classes
import Types.Scores
-- sariulGrade5 = GradeFive 1.5
sariulGrade5 = GradeFive 1
sariulGrade6 = GradeSix 1
sariulClasses :: [Class]
sariulClasses =
[ Class sariulGrade5 1 25
, Class sariulGrade5 2 24
, Class sariulGrade5 3 25
, Class sariulGrade6 1 23
, Class sariulGrade6 2 23
, Class sariulGrade6 3 23
, Class sariulGrade6 4 21 ]
zeroScores :: ScoresList
zeroScores = foldr ((:) . (,emptyScore)) [] sariulClasses
lookupSariulClass :: Int -> Int -> Maybe Class
lookupSariulClass grade theClass = do
grade' <- case grade of
5 -> Just sariulGrade5
6 -> Just sariulGrade6
_ -> Nothing
let choose (Class g n _) = theClass == n && grade' == g
classes = filter choose sariulClasses
case classes of
[] -> Nothing
(x:xs) -> Just x
--- test data
testScores :: ScoresList
testScores = zip sariulClasses
[ Score 408 7
, Score 455 7
, Score 383 91
, Score 256 56
, Score 277 101
, Score 308 43
, Score 303 2]
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