52 lines
1.9 KiB
Haskell
52 lines
1.9 KiB
Haskell
{-|
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A compound data type for efficiency. A 'Transaction' is a 'Posting' with
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its parent 'LedgerTransaction' \'s date and description attached. The
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\"transaction\" term is pretty ingrained in the code, docs and with users,
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so we've kept it. These are what we work with most of the time when doing
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reports.
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-}
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module Ledger.Transaction
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where
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import Ledger.Dates
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import Ledger.Utils
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import Ledger.Types
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import Ledger.Dates
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import Ledger.LedgerTransaction (showAccountName)
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import Ledger.Amount
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instance Show Transaction where show=showTransaction
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showTransaction :: Transaction -> String
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showTransaction (Transaction _ stat d desc a amt ttype) =
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s ++ unwords [showDate d,desc,a',show amt,show ttype]
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where s = if stat then " *" else ""
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a' = showAccountName Nothing ttype a
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-- | Convert a 'LedgerTransaction' 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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flattenLedgerTransaction :: (LedgerTransaction, Int) -> [Transaction]
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flattenLedgerTransaction (LedgerTransaction d s _ desc _ ps _, n) =
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[Transaction n s d desc (paccount p) (pamount p) (ptype p) | p <- ps]
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accountNamesFromTransactions :: [Transaction] -> [AccountName]
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accountNamesFromTransactions ts = nub $ map taccount ts
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sumTransactions :: [Transaction] -> MixedAmount
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sumTransactions = sum . map tamount
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nulltxn :: Transaction
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nulltxn = Transaction 0 False (parsedate "1900/1/1") "" "" nullmixedamt RegularPosting
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-- | Does the given transaction fall within the given date span ?
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isTransactionInDateSpan :: DateSpan -> Transaction -> Bool
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isTransactionInDateSpan (DateSpan Nothing Nothing) _ = True
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isTransactionInDateSpan (DateSpan Nothing (Just e)) (Transaction{tdate=d}) = d<e
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isTransactionInDateSpan (DateSpan (Just b) Nothing) (Transaction{tdate=d}) = d>=b
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isTransactionInDateSpan (DateSpan (Just b) (Just e)) (Transaction{tdate=d}) = d>=b && d<e
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