66 lines
2.7 KiB
Haskell
66 lines
2.7 KiB
Haskell
{-|
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Print some statistics for the ledger.
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-}
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module Commands.Stats
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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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-- | Print various statistics for the ledger.
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stats :: [Opt] -> [String] -> Ledger -> IO ()
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stats opts args l = do
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today <- getCurrentDay
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putStr $ showStats opts args l today
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showStats :: [Opt] -> [String] -> Ledger -> Day -> String
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showStats _ _ l today =
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heading ++ (unlines $ map (\(a,b) -> printf fmt a b) stats)
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where
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heading = underline $ printf "Ledger statistics as of %s" (show today)
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fmt = "%-" ++ (show w1) ++ "s: %-" ++ (show w2) ++ "s"
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w1 = maximum $ map (length . fst) stats
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w2 = maximum $ map (length . show . snd) stats
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stats = [
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("File", filepath $ rawledger l)
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,("Period", printf "%s to %s (%d days)" (start span) (end span) days)
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,("Transactions", printf "%d (%0.1f per day)" tnum txnrate)
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,("Transactions last 30 days", printf "%d (%0.1f per day)" tnum30 txnrate30)
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,("Transactions last 7 days", printf "%d (%0.1f per day)" tnum7 txnrate7)
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,("Last transaction", maybe "none" show lastdate ++
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maybe "" (printf " (%d days ago)") lastelapsed)
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-- ,("Payees/descriptions", show $ length $ nub $ map ltdescription ts)
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,("Accounts", show $ length $ accounts l)
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,("Commodities", show $ length $ commodities l)
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-- Transactions this month : %(monthtxns)s (last month in the same period: %(lastmonthtxns)s)
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-- Uncleared transactions : %(uncleared)s
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-- Days since reconciliation : %(reconcileelapsed)s
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-- Days since last transaction : %(recentelapsed)s
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]
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where
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ts = sortBy (comparing ltdate) $ ledger_txns $ rawledger l
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lastdate | null ts = Nothing
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| otherwise = Just $ ltdate $ last ts
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lastelapsed = maybe Nothing (Just . diffDays today) lastdate
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tnum = length ts
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span = rawdatespan l
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start (DateSpan (Just d) _) = show d
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start _ = ""
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end (DateSpan _ (Just d)) = show d
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end _ = ""
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days = fromMaybe 0 $ daysInSpan span
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txnrate | days==0 = 0
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| otherwise = fromIntegral tnum / fromIntegral days :: Double
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tnum30 = length $ filter withinlast30 ts
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withinlast30 t = (d>=(addDays (-30) today) && (d<=today)) where d = ltdate t
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txnrate30 = fromIntegral tnum30 / 30 :: Double
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tnum7 = length $ filter withinlast7 ts
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withinlast7 t = (d>=(addDays (-7) today) && (d<=today)) where d = ltdate t
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txnrate7 = fromIntegral tnum7 / 7 :: Double
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