61 lines
2.6 KiB
Haskell
Executable file
61 lines
2.6 KiB
Haskell
Executable file
-- yammat - Yet Another MateMAT
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-- Copyright (C) 2015 Amedeo Molnár
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--
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-- This program is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU Affero General Public License as published
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-- by the Free Software Foundation, either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU Affero General Public License for more details.
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--
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-- You should have received a copy of the GNU Affero General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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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]
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next <- runDB $ selectList [] [Desc TransactionId, OffsetBy 30]
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let entries = L.reverse $ L.take 30 rawEntries
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let total = L.sum $ I.map (transactionAmount . entityVal) rawEntries
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timeLimit <- if L.null entries
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then liftIO getCurrentTime
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else return $ transactionTime $ entityVal $ L.head entries
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cashChecks <- runDB $ selectList [CashCheckTime >=. timeLimit] [Asc CashCheckId]
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let list = merge entries cashChecks
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cashBalance <- getCashierBalance
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defaultLayout $
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$(widgetFile "journal")
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merge :: [Entity Transaction] -> [Entity CashCheck] -> [Either Transaction CashCheck]
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merge [] [] = []
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merge [] (c:cs) = (Right $ entityVal c) : merge [] cs
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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) < cashCheckTime (entityVal c) = (Left $ entityVal t) : merge ts (c:cs)
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| transactionTime (entityVal t) > cashCheckTime (entityVal c) = (Right $ entityVal c) : merge (t:ts) cs
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getJournalPageR :: Int -> Handler Html
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getJournalPageR p = do
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master <- getYesod
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rawEntries <- runDB $ selectList [] [Desc TransactionId, OffsetBy (p * 30)]
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next <- runDB $ selectList [] [Desc TransactionId, OffsetBy ((p + 1) * 30)]
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let entries = L.reverse $ L.take 30 rawEntries
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lTimeLimit <- if L.null entries
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then liftIO getCurrentTime
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else return $ transactionTime $ entityVal $ L.head entries
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uTimeLimit <- if L.null entries
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then liftIO getCurrentTime
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else return $ transactionTime $ entityVal $ L.last entries
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cashChecks <- runDB $ selectList [CashCheckTime >=. lTimeLimit, CashCheckTime <. uTimeLimit] [Asc CashCheckId]
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let list = merge entries cashChecks
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defaultLayout $
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$(widgetFile "journalPage")
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