module Hledger.Cli.Commands.Stats
where
import Hledger.Data
import Hledger.Cli.Options
#if __GLASGOW_HASKELL__ <= 610
import Prelude hiding ( putStr )
import System.IO.UTF8
#endif
import qualified Data.Map as Map
stats :: [Opt] -> [String] -> Journal -> IO ()
stats opts args j = do
today <- getCurrentDay
putStr $ showStats opts args (journalToLedger nullfilterspec j) today
showStats :: [Opt] -> [String] -> Ledger -> Day -> String
showStats _ _ l today =
heading ++ unlines (map (uncurry (printf fmt)) stats)
where
heading = underline $ printf "Ledger statistics as of %s" (show today)
fmt = "%-" ++ show w1 ++ "s: %-" ++ show w2 ++ "s"
w1 = maximum $ map (length . fst) stats
w2 = maximum $ map (length . show . snd) stats
stats = [
("File", filepath $ journal l)
,("Period", printf "%s to %s (%d days)" (start span) (end span) days)
,("Last transaction", maybe "none" show lastdate ++ showelapsed lastelapsed)
,("Transactions", printf "%d (%0.1f per day)" tnum txnrate)
,("Transactions last 30 days", printf "%d (%0.1f per day)" tnum30 txnrate30)
,("Transactions last 7 days", printf "%d (%0.1f per day)" tnum7 txnrate7)
,("Accounts", show $ length $ accounts l)
,("Account tree depth", show $ maximum $ map (accountNameLevel.aname) $ accounts l)
,("Commodities", printf "%s (%s)" (show $ length $ cs) (intercalate ", " $ sort $ map symbol cs))
]
where
ts = sortBy (comparing tdate) $ jtxns $ journal l
lastdate | null ts = Nothing
| otherwise = Just $ tdate $ last ts
lastelapsed = maybe Nothing (Just . diffDays today) lastdate
showelapsed Nothing = ""
showelapsed (Just days) = printf " (%d %s)" days' direction
where days' = abs days
direction | days >= 0 = "days ago"
| otherwise = "days from now"
tnum = length ts
span = rawdatespan l
start (DateSpan (Just d) _) = show d
start _ = ""
end (DateSpan _ (Just d)) = show d
end _ = ""
days = fromMaybe 0 $ daysInSpan span
txnrate | days==0 = 0
| otherwise = fromIntegral tnum / fromIntegral days :: Double
tnum30 = length $ filter withinlast30 ts
withinlast30 t = d >= addDays (30) today && (d<=today) where d = tdate t
txnrate30 = fromIntegral tnum30 / 30 :: Double
tnum7 = length $ filter withinlast7 ts
withinlast7 t = d >= addDays (7) today && (d<=today) where d = tdate t
txnrate7 = fromIntegral tnum7 / 7 :: Double
cs = Map.elems $ commodities l