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49 lines
1.5 KiB
Haskell
49 lines
1.5 KiB
Haskell
{-|
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Print a histogram report.
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-}
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module Commands.Histogram
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where
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import Prelude hiding (putStr)
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import Ledger
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import Options
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import System.IO.UTF8
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barchar = '*'
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-- | Print a histogram of some statistic per reporting interval, such as
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-- number of transactions per day.
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histogram :: [Opt] -> [String] -> Ledger -> IO ()
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histogram opts args = putStr . showHistogram opts args
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showHistogram :: [Opt] -> [String] -> Ledger -> String
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showHistogram opts args l = concatMap (printDayWith countBar) daytxns
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where
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i = intervalFromOpts opts
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interval | i == NoInterval = Daily
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| otherwise = i
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fullspan = rawLedgerDateSpan $ rawledger l
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days = filter (DateSpan Nothing Nothing /=) $ splitSpan interval fullspan
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daytxns = [(s, filter (isTransactionInDateSpan s) ts) | s <- days]
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-- same as Register
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ts = sortBy (comparing tdate) $ filterempties $ filter matchapats $ filterdepth $ ledgerTransactions l
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filterempties
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| Empty `elem` opts = id
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| otherwise = filter (not . isZeroMixedAmount . tamount)
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matchapats = matchpats apats . taccount
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(apats,_) = parsePatternArgs args
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filterdepth | interval == NoInterval = filter (\t -> accountNameLevel (taccount t) <= depth)
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| otherwise = id
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depth = depthFromOpts opts
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printDayWith f (DateSpan b _, ts) = printf "%s %s\n" (show $ fromJust b) (f ts)
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countBar ts = replicate (length ts) barchar
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total = show . sumTransactions
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-- totalBar ts = replicate (sumTransactions ts) barchar
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