365 lines
11 KiB
Haskell
365 lines
11 KiB
Haskell
{-# LANGUAGE GADTs #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE TupleSections #-}
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{-# LANGUAGE NoImplicitPrelude #-}
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module Internal.Insert
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( insertStatements
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, insertBudget
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)
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where
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import Data.Hashable
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import Database.Persist.Class
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import Database.Persist.Sql hiding (Single, Statement)
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import Internal.Database.Model
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import Internal.Statement
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import Internal.Types hiding (sign)
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import Internal.Utils
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import RIO hiding (to)
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import qualified RIO.Text as T
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import RIO.Time
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--------------------------------------------------------------------------------
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-- intervals
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expandDatePat :: Bounds -> DatePat -> [Day]
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expandDatePat (a, b) (Cron cp) = filter (cronPatternMatches cp) [a .. b]
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expandDatePat i (Mod mp) = expandModPat mp i
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expandModPat :: ModPat -> Bounds -> [Day]
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expandModPat
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ModPat {mpStart = s, mpBy = b, mpUnit = u, mpRepeats = r}
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(lower, upper) =
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takeWhile (<= upper) $
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(`addFun` start) . (* b')
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<$> maybe id (take . fromIntegral) r [0 ..]
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where
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start = maybe lower fromGregorian' s
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b' = fromIntegral b
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addFun = case u of
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Day -> addDays
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Week -> addDays . (* 7)
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Month -> addGregorianMonthsClip
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Year -> addGregorianYearsClip
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-- TODO this can be optimized to prevent filtering a bunch of dates for
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-- one/a few cron patterns
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cronPatternMatches :: CronPat -> Day -> Bool
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cronPatternMatches
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CronPat
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{ cronWeekly = w
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, cronYear = y
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, cronMonth = m
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, cronDay = d
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}
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x =
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yMaybe y' y && mdMaybe m' m && mdMaybe d' d && wdMaybe (dayOfWeek_ x) w
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where
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testMaybe = maybe True
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yMaybe z = testMaybe (mdyPatternMatches (fromIntegral z))
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mdMaybe z = testMaybe (mdyPatternMatches (fromIntegral z))
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wdMaybe z = testMaybe (`weekdayPatternMatches` z)
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(y', m', d') = toGregorian x
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dayOfWeek_ :: Day -> Weekday
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dayOfWeek_ d = case dayOfWeek d of
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Monday -> Mon
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Tuesday -> Tue
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Wednesday -> Wed
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Thursday -> Thu
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Friday -> Fri
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Saturday -> Sat
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Sunday -> Sun
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weekdayPatternMatches :: WeekdayPat -> Weekday -> Bool
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weekdayPatternMatches (OnDay x) = (== x)
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weekdayPatternMatches (OnDays xs) = (`elem` xs)
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mdyPatternMatches :: Natural -> MDYPat -> Bool
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mdyPatternMatches x p = case p of
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Single y -> x == y
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Multi xs -> x `elem` xs
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Repeat (RepeatPat {rpStart = s, rpBy = b, rpRepeats = r}) ->
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s >= x && mod x b == 0 && maybe True (\y -> x <= s + b * y) r
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--------------------------------------------------------------------------------
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-- budget
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insertBudget :: MonadUnliftIO m => Budget -> MappingT m [InsertError]
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insertBudget Budget {income = is, expenses = es} = do
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es1 <- mapM insertIncome is
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es2 <- mapM insertExpense es
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return $ concat $ es1 ++ es2
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-- TODO this hashes twice (not that it really matters)
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whenHash
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:: (Hashable a, MonadUnliftIO m)
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=> ConfigType
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-> a
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-> b
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-> (Key CommitR -> MappingT m b)
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-> MappingT m b
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whenHash t o def f = do
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let h = hash o
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hs <- asks kmNewCommits
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if h `elem` hs then f =<< lift (insert $ CommitR h t) else return def
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insertIncome :: MonadUnliftIO m => Income -> MappingT m [InsertError]
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insertIncome
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i@Income
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{ incCurrency = cur
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, incWhen = dp
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, incAccount = from
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, incTaxes = taxes
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} =
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whenHash CTIncome i [] $ \c ->
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unlessLeft (balanceIncome i) $ \balanced -> do
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bounds <- (liftIO . resolveBounds) =<< asks kmBudgetInterval
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fmap concat $ forM (expandDatePat bounds dp) $ \day -> do
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-- TODO why are these separate?
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nontaxRes <- alloTxs concat (allocationToTx from day) balanced
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taxRes <- alloTxs (fmap (,Fixed)) (taxToTx from day cur) taxes
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unlessLefts_ (concatEithers2 nontaxRes taxRes (++)) $ \txs ->
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lift $ mapM_ (\(t, b) -> insertTxBucket (Just b) c t) txs
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where
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alloTxs squish toTx = fmap (fmap squish . concatEithersL) . mapM toTx
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balanceIncome :: Income -> EitherErr [BalAllocation]
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balanceIncome
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Income
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{ incGross = g
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, incWhen = dp
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, incPretax = pre
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, incTaxes = tax
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, incPosttax = post
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} = (preRat ++) <$> balancePostTax dp bal postRat
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where
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preRat = mapAlloAmts dec2Rat <$> pre
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postRat = mapAlloAmts (fmap dec2Rat) <$> post
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bal = dec2Rat g - (sumAllocations preRat + sumTaxes tax)
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mapAlloAmts :: (a -> b) -> Allocation a -> Allocation b
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mapAlloAmts f a@Allocation {alloAmts = as} = a {alloAmts = fmap f <$> as}
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sumAllocations :: [BalAllocation] -> Rational
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sumAllocations = sum . concatMap (fmap amtValue . alloAmts)
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sumTaxes :: [Tax] -> Rational
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sumTaxes = sum . fmap (dec2Rat . taxValue)
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balancePostTax :: DatePat -> Rational -> [RawAllocation] -> EitherErr [BalAllocation]
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balancePostTax dp bal as
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| null as = err NoAllocations
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| otherwise = case partitionEithers $ fmap hasVal as of
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([([empty], nonmissing)], bs) ->
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let s = bal - sumAllocations (nonmissing : bs)
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in if s < 0
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then err ExceededTotal
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else Right $ mapAmts (empty {amtValue = s} :) nonmissing : bs
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([], _) -> err MissingBlank
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_ -> err TooManyBlanks
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where
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hasVal a@Allocation {alloAmts = xs} =
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case partitionEithers $ fmap maybeAmt xs of
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([], bs) -> Right a {alloAmts = bs}
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(unbal, bs) -> Left (unbal, a {alloAmts = bs})
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maybeAmt a@Amount {amtValue = Just v} = Right a {amtValue = v}
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maybeAmt a = Left a
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err t = Left $ AllocationError t dp
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-- TODO lens reinvention
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mapAmts :: ([Amount a] -> [Amount b]) -> Allocation a -> Allocation b
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mapAmts f a@Allocation {alloAmts = xs} = a {alloAmts = f xs}
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allocationToTx
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:: MonadUnliftIO m
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=> AcntID
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-> Day
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-> BalAllocation
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-> MappingT m (EitherErrs [(KeyTx, Bucket)])
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allocationToTx
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from
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day
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Allocation
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{ alloPath = to
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, alloBucket = b
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, alloCurrency = cur
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, alloAmts = as
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} =
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second (fmap (,b)) . concatEithersL <$> mapM (transferToTx day from to cur) as
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taxToTx
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:: MonadUnliftIO m
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=> AcntID
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-> Day
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-> T.Text
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-> Tax
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-> MappingT m (EitherErrs KeyTx)
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taxToTx from day cur Tax {taxAcnt = to, taxValue = v} =
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txPair day from to cur (dec2Rat v) ""
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transferToTx
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:: MonadUnliftIO m
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=> Day
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-> AcntID
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-> AcntID
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-> T.Text
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-> BalAmount
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-> MappingT m (EitherErrs KeyTx)
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transferToTx day from to cur Amount {amtValue = v, amtDesc = d} =
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txPair day from to cur v d
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insertExpense :: MonadUnliftIO m => Expense -> MappingT m [InsertError]
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insertExpense
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e@Expense
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{ expFrom = from
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, expTo = to
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, expCurrency = cur
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, expBucket = buc
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, expAmounts = as
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} = do
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whenHash CTExpense e [] $ \key -> concat <$> mapM (go key) as
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where
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go key amt = do
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res <- timeAmountToTx from to cur amt
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unlessLefts_ res $
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lift . mapM_ (insertTxBucket (Just buc) key)
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timeAmountToTx
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:: MonadUnliftIO m
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=> AcntID
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-> AcntID
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-> CurID
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-> TimeAmount
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-> MappingT m (EitherErrs [KeyTx])
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timeAmountToTx
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from
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to
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cur
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TimeAmount
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{ taWhen = dp
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, taAmt =
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Amount
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{ amtValue = v
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, amtDesc = d
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}
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} = do
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bounds <- (liftIO . resolveBounds) =<< asks kmBudgetInterval
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concatEithersL <$> mapM tx (expandDatePat bounds dp)
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where
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tx day = txPair day from to cur (dec2Rat v) d
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--------------------------------------------------------------------------------
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-- statements
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insertStatements :: MonadUnliftIO m => Config -> MappingT m [InsertError]
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insertStatements conf = concat <$> mapM insertStatement (statements conf)
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insertStatement :: MonadUnliftIO m => Statement -> MappingT m [InsertError]
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insertStatement (StmtManual m) = insertManual m
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insertStatement (StmtImport i) = insertImport i
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insertManual :: MonadUnliftIO m => Manual -> MappingT m [InsertError]
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insertManual
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m@Manual
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{ manualDate = dp
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, manualFrom = from
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, manualTo = to
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, manualValue = v
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, manualCurrency = u
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, manualDesc = e
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} = do
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whenHash CTManual m [] $ \c -> do
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bounds <- (liftIO . resolveBounds) =<< asks kmStatementInterval
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res <- mapM tx $ expandDatePat bounds dp
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unlessLefts_ (concatEithersL res) $ lift . mapM_ (insertTx c)
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where
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tx day = txPair day from to u (dec2Rat v) e
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insertImport :: MonadUnliftIO m => Import -> MappingT m [InsertError]
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insertImport i = whenHash CTImport i [] $ \c -> do
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-- TODO this isn't efficient, the whole file will be read and maybe no
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-- transactions will be desired
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recoverIO (readImport i) $ \r -> unlessLefts r $ \bs -> do
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bounds <- asks kmStatementInterval
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res <- mapM resolveTx $ filter (inMaybeBounds bounds . txDate) bs
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unlessLefts_ (concatEithersL res) $ lift . mapM_ (insertTx c)
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where
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recoverIO x rest = do
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res <- tryIO x
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case res of
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Right r -> rest r
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-- If file is not found (or something else happens) then collect the
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-- error try the remaining imports
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Left e -> return [InsertIOError $ showT e]
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--------------------------------------------------------------------------------
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-- low-level transaction stuff
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txPair
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:: MonadUnliftIO m
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=> Day
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-> AcntID
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-> AcntID
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-> T.Text
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-> Rational
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-> T.Text
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-> MappingT m (EitherErrs KeyTx)
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txPair day from to cur val desc = resolveTx tx
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where
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split a v = Split {sAcnt = a, sValue = v, sComment = "", sCurrency = cur}
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tx =
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Tx
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{ txDescr = desc
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, txDate = day
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, txTags = []
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, txSplits = [split from (-val), split to val]
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}
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resolveTx :: MonadUnliftIO m => BalTx -> MappingT m (EitherErrs KeyTx)
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resolveTx t@Tx {txSplits = ss} = do
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res <- concatEithersL <$> mapM resolveSplit ss
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return $ fmap (\kss -> t {txSplits = kss}) res
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resolveSplit :: MonadUnliftIO m => BalSplit -> MappingT m (EitherErrs KeySplit)
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resolveSplit s@Split {sAcnt = p, sCurrency = c, sValue = v} = do
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aid <- lookupAccountKey p
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cid <- lookupCurrency c
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sign <- lookupAccountSign p
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-- TODO correct sign here?
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-- TODO lenses would be nice here
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return $ concatEither3 aid cid sign $ \aid_ cid_ sign_ ->
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s
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{ sAcnt = aid_
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, sCurrency = cid_
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, sValue = v * fromIntegral (sign2Int sign_)
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}
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-- return $ case (aid, cid, sign) of
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-- _ -> Nothing
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insertTxBucket :: MonadUnliftIO m => Maybe Bucket -> Key CommitR -> KeyTx -> SqlPersistT m ()
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insertTxBucket b c Tx {txDate = d, txDescr = e, txSplits = ss} = do
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k <- insert $ TransactionR c d e (fmap (T.pack . show) b)
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mapM_ (insertSplit k) ss
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insertTx :: MonadUnliftIO m => Key CommitR -> KeyTx -> SqlPersistT m ()
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insertTx = insertTxBucket Nothing
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insertSplit :: MonadUnliftIO m => Key TransactionR -> KeySplit -> SqlPersistT m ()
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insertSplit t Split {sAcnt = aid, sCurrency = cid, sValue = v, sComment = c} = do
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insert_ $ SplitR t cid aid c v
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lookupAccount :: MonadUnliftIO m => AcntID -> MappingT m (EitherErr (Key AccountR, AcntSign))
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lookupAccount p = lookupErr (DBKey AcntField) p <$> asks kmAccount
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lookupAccountKey :: MonadUnliftIO m => AcntID -> MappingT m (EitherErr (Key AccountR))
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lookupAccountKey = fmap (fmap fst) . lookupAccount
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lookupAccountSign :: MonadUnliftIO m => AcntID -> MappingT m (EitherErr AcntSign)
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lookupAccountSign = fmap (fmap snd) . lookupAccount
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lookupCurrency :: MonadUnliftIO m => T.Text -> MappingT m (EitherErr (Key CurrencyR))
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lookupCurrency c = lookupErr (DBKey CurField) c <$> asks kmCurrency
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