module Hledger.Cli.Histogram
where
import Hledger.Data
import Hledger.Cli.Options
import Prelude hiding (putStr)
import Hledger.Data.UTF8 (putStr)
barchar = '*'
histogram :: [Opt] -> [String] -> Journal -> IO ()
histogram opts args j = do
t <- getCurrentLocalTime
putStr $ showHistogram opts (optsToFilterSpec opts args t) j
showHistogram :: [Opt] -> FilterSpec -> Journal -> String
showHistogram opts filterspec j = concatMap (printDayWith countBar) spanps
where
i = intervalFromOpts opts
interval | i == NoInterval = Days 1
| otherwise = i
span = datespan filterspec `orDatesFrom` journalDateSpan j
spans = filter (DateSpan Nothing Nothing /=) $ splitSpan interval span
spanps = [(s, filter (isPostingInDateSpan s) ps) | s <- spans]
ps = sortBy (comparing postingDate) $ filterempties $ filter matchapats $ filterdepth $ journalPostings j
filterempties
| Empty `elem` opts = id
| otherwise = filter (not . isZeroMixedAmount . pamount)
matchapats = matchpats apats . paccount
apats = acctpats filterspec
filterdepth | interval == NoInterval = filter (\p -> accountNameLevel (paccount p) <= depth)
| otherwise = id
depth = fromMaybe 99999 $ depthFromOpts opts
printDayWith f (DateSpan b _, ts) = printf "%s %s\n" (show $ fromJust b) (f ts)
countBar ps = replicate (length ps) barchar