module Handler.Journal where import Import as I import Data.List as L import Handler.Common getJournalR :: Handler Html getJournalR = do master <- getYesod rawEntries <- runDB $ selectList [] [Desc TransactionId] entries <- return $ L.reverse $ L.take 30 rawEntries total <- return $ L.sum $ I.map (transactionAmount . entityVal) rawEntries timeLimit <- case L.null entries of False -> return $ transactionTime $ entityVal $ L.head $ entries True -> liftIO getCurrentTime cashChecks <- runDB $ selectList [CashCheckTime >=. timeLimit] [Asc CashCheckId] list <- return $ merge entries cashChecks cashBalance <- getCashierBalance defaultLayout $ do $(widgetFile "journal") merge :: [Entity Transaction] -> [Entity CashCheck] -> [Either Transaction CashCheck] merge [] [] = [] merge [] (c:cs) = (Right $ entityVal c) : merge [] cs merge (t:ts) [] = (Left $ entityVal t) : merge ts [] merge (t:ts) (c:cs) | transactionTime (entityVal t) < cashCheckTime (entityVal c) = (Left $ entityVal t) : merge ts (c:cs) | transactionTime (entityVal t) > cashCheckTime (entityVal c) = (Right $ entityVal c) : merge (t:ts) cs