From 5f2c7ae801deb49b55f7f574253d02dbd4b78e5d Mon Sep 17 00:00:00 2001
From: Sean Whitton <spwhitton@spwhitton.name>
Date: Fri, 20 Mar 2015 14:09:11 +0000
Subject: readScoresFile and writeScoresFile rewritten in terms of new monad

---
 src/Utils/ScoresFile.hs | 31 +++++++++++++++++++------------
 1 file changed, 19 insertions(+), 12 deletions(-)

diff --git a/src/Utils/ScoresFile.hs b/src/Utils/ScoresFile.hs
index 936a5dc..eac386c 100644
--- a/src/Utils/ScoresFile.hs
+++ b/src/Utils/ScoresFile.hs
@@ -14,6 +14,8 @@ import Control.Monad (liftM)
 import Data.List.Split (splitOn)
 import Data.Maybe (fromJust)
 import System.FilePath ((</>))
+import Control.Monad.SariulClocks
+import Control.Monad.Trans (liftIO)
 
 scoresToCSV :: ScoresList -> String
 scoresToCSV = unlines . foldr step []
@@ -33,22 +35,27 @@ scoresFromCSV csv = foldr step [] (lines csv)
         classString:scoreString:timeString:[] = splitOn "," line
         theClass = fromJust $ lookupSariulClass ((read . (:[]) . head) classString) ((read . (:[]) . last) classString)
 
--- read from scores-XX.csv where XX is largest timestamp
-readScoresFile :: IO (Maybe ScoresList)
+-- try to read from scores-XX.csv where XX is largest timestamp
+readScoresFile :: SariulScoresMonad a => a (Maybe ScoresList)
 readScoresFile = do
-    curDir <- getCurrentDirectory
+    curDir <- liftIO getCurrentDirectory
     let dataDir = curDir </> "data"
-    filenames <- liftM (reverse . sort . filter isCSV) $ getDirectoryContents dataDir
-    case filenames of
-        [] -> return Nothing
-        _  -> Just . scoresFromCSV <$> readFile (dataDir </> head filenames)
+    filenames <- liftM (reverse . sort . filter isCSV) $ liftIO $ getDirectoryContents dataDir
+    if null filenames
+       then return Nothing
+       else do
+        -- let scores = liftM scoresFromCSV $ liftIO $ readFile (dataDir </> head filenames)
+        scores <- liftIO $ scoresFromCSV <$> readFile (dataDir </> head filenames)
+        putScores scores
+        return $ Just scores
   where isCSV path = takeExtension path == ".csv"
 
 -- writes to score-XX.csv where XX is unix timestamp: a simple-minded logging
-writeScoresFile :: ScoresList -> IO ()
-writeScoresFile scores = do
-    curDir <- getCurrentDirectory
+writeScoresFile :: SariulScoresMonad a => a ()
+writeScoresFile = do
+    scores <- getScores
+    curDir <- liftIO getCurrentDirectory
     let dataDir = curDir </> "data"
-    timestamp <- round <$> getPOSIXTime
+    timestamp <- liftM round $ liftIO getPOSIXTime
     let filename = dataDir </> ("scores-" ++ show timestamp ++ ".csv")
-    writeFile filename (scoresToCSV scores)
+    liftIO $ writeFile filename (scoresToCSV scores)
-- 
cgit v1.2.3