67 lines
2.4 KiB
Haskell
67 lines
2.4 KiB
Haskell
{-|
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A 'Transaction' is a 'RawTransaction' with its parent 'Entry' \'s date and
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description attached. These are what we actually query when doing reports.
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-}
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module Ledger.Transaction
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where
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import Ledger.Utils
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import Ledger.Types
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import Ledger.Entry
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import Ledger.RawTransaction
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import Ledger.Amount
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instance Show Transaction where
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show (Transaction eno d desc a amt) =
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unwords [d,desc,a,show amt]
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-- | Convert a 'Entry' to two or more 'Transaction's. An id number
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-- is attached to the transactions to preserve their grouping - it should
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-- be unique per entry.
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flattenEntry :: (Entry, Int) -> [Transaction]
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flattenEntry (Entry d _ _ desc _ ts _, e) =
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[Transaction e d desc (taccount t) (tamount t) | t <- ts]
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transactionSetPrecision :: Int -> Transaction -> Transaction
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transactionSetPrecision p (Transaction e d desc a amt) = Transaction e d desc a amt{precision=p}
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accountNamesFromTransactions :: [Transaction] -> [AccountName]
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accountNamesFromTransactions ts = nub $ map account ts
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sumTransactions :: [Transaction] -> Amount
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sumTransactions = sum . map amount
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-- | for register command
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showTransactionsWithBalances :: [Transaction] -> Amount -> String
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showTransactionsWithBalances [] _ = []
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showTransactionsWithBalances ts b =
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unlines $ showTransactionsWithBalances' ts dummyt b
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where
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dummyt = Transaction 0 "" "" "" nullamt
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showTransactionsWithBalances' [] _ _ = []
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showTransactionsWithBalances' (t:ts) tprev b =
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(if sameentry t tprev
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then [showTransactionAndBalance t b']
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else [showTransactionDescriptionAndBalance t b'])
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++ (showTransactionsWithBalances' ts t b')
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where
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b' = b + (amount t)
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sameentry (Transaction e1 _ _ _ _) (Transaction e2 _ _ _ _) = e1 == e2
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showTransactionDescriptionAndBalance :: Transaction -> Amount -> String
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showTransactionDescriptionAndBalance t b =
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(showEntryDescription $ Entry (date t) False "" (description t) "" [] "")
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++ (showLedgerTransaction $ RawTransaction (account t) (amount t) "") ++ (showBalance b)
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showTransactionAndBalance :: Transaction -> Amount -> String
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showTransactionAndBalance t b =
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(replicate 32 ' ') ++ (showLedgerTransaction $ RawTransaction (account t) (amount t) "") ++ (showBalance b)
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showBalance :: Amount -> String
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showBalance b = printf " %12s" (showAmountRoundedOrZero b)
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