25 lines
1,012 B
Haskell
25 lines
1,012 B
Haskell
module Handler.Journal where
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import Import as I
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import Data.List as L
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import Handler.Common
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getJournalR :: Handler Html
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getJournalR = do
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master <- getYesod
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rawEntries <- runDB $ selectList [] [Desc TransactionId, LimitTo 30]
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entries <- return $ L.reverse rawEntries
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total <- return $ L.sum $ I.map (transactionAmount . entityVal) entries
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timeLimit <- return $ transactionTime $ entityVal $ L.last $ entries
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cashiers <- runDB $ selectList [CashierCreated <=. timeLimit] [Asc CashierId]
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list <- return $ merge entries cashiers
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cashBalance <- getCashierBalance
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defaultLayout $ do
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$(widgetFile "journal")
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merge :: [Entity Transaction] -> [Entity Cashier] -> [Either Transaction Cashier]
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merge [] [] = []
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merge (t:ts) [] = (Left $ entityVal t) : merge ts []
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merge (t:ts) (c:cs)
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| transactionTime (entityVal t) < cashierCreated (entityVal c) = (Left $ entityVal t) : merge ts (c:cs)
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| transactionTime (entityVal t) > cashierCreated (entityVal c) = (Right $ entityVal c) : merge (t:ts) cs
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