583 lines
20 KiB
Haskell
583 lines
20 KiB
Haskell
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 GHC.Utils.Misc hiding (split)
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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.List as L
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import qualified RIO.Map as M
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import qualified RIO.NonEmpty as NE
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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 -> EitherErrs [Day]
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expandDatePat b (Cron cp) = expandCronPat b cp
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expandDatePat i (Mod mp) = Right $ expandModPat mp i
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expandModPat :: ModPat -> Bounds -> [Day]
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expandModPat ModPat {mpStart = s, mpBy = b, mpUnit = u, mpRepeats = r} bs =
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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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(lower, upper) = expandBounds bs
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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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expandCronPat :: Bounds -> CronPat -> EitherErrs [Day]
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expandCronPat b CronPat {cronYear, cronMonth, cronDay, cronWeekly} =
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concatEither3 yRes mRes dRes $ \ys ms ds ->
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filter validWeekday $
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mapMaybe (uncurry3 toDay) $
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takeWhile (\((y, _), m, d) -> (y, m, d) <= (yb1, mb1, db1)) $
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dropWhile (\((y, _), m, d) -> (y, m, d) < (yb0, mb0, db0)) $
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[(y, m, d) | y <- (\y -> (y, isLeapYear y)) <$> ys, m <- ms, d <- ds]
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where
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yRes = case cronYear of
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Nothing -> return [yb0 .. yb1]
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Just pat -> do
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ys <- expandMDYPat (fromIntegral yb0) (fromIntegral yb1) pat
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return $ dropWhile (< yb0) $ fromIntegral <$> ys
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mRes = expandMD 12 cronMonth
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dRes = expandMD 31 cronDay
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(s, e) = expandBounds b
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(yb0, mb0, db0) = toGregorian s
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(yb1, mb1, db1) = toGregorian $ addDays (-1) e
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expandMD lim =
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fmap (fromIntegral <$>)
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. maybe (return [1 .. lim]) (expandMDYPat 1 lim)
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expandW (OnDay x) = [fromEnum x]
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expandW (OnDays xs) = fromEnum <$> xs
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ws = maybe [] expandW cronWeekly
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validWeekday = if null ws then const True else \day -> dayToWeekday day `elem` ws
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toDay (y, leap) m d
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| m == 2 && (not leap && d > 28 || leap && d > 29) = Nothing
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| m `elem` [4, 6, 9, 11] && d > 30 = Nothing
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| otherwise = Just $ fromGregorian y m d
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expandMDYPat :: Natural -> Natural -> MDYPat -> EitherErr [Natural]
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expandMDYPat lower upper (Single x) = Right [x | lower <= x && x <= upper]
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expandMDYPat lower upper (Multi xs) = Right $ dropWhile (<= lower) $ takeWhile (<= upper) xs
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expandMDYPat lower upper (After x) = Right [max lower x .. upper]
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expandMDYPat lower upper (Before x) = Right [lower .. min upper x]
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expandMDYPat lower upper (Between x y) = Right [max lower x .. min upper y]
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expandMDYPat lower upper (Repeat RepeatPat {rpStart = s, rpBy = b, rpRepeats = r})
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| b < 1 = Left $ PatternError s b r ZeroLength
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| otherwise = do
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k <- limit r
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return $ dropWhile (<= lower) $ takeWhile (<= k) [s + i * b | i <- [0 ..]]
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where
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limit Nothing = Right upper
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limit (Just n)
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-- this guard not only produces the error for the user but also protects
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-- from an underflow below it
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| n < 1 = Left $ PatternError s b r ZeroRepeats
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| otherwise = Right $ min (s + b * (n - 1)) upper
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dayToWeekday :: Day -> Int
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dayToWeekday (ModifiedJulianDay d) = mod (fromIntegral d + 2) 7
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withDates
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:: MonadFinance m
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=> DatePat
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-> (Day -> SqlPersistT m (EitherErrs a))
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-> SqlPersistT m (EitherErrs [a])
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withDates dp f = do
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bounds <- lift $ askDBState kmBudgetInterval
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case expandDatePat bounds dp of
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Left es -> return $ Left es
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Right days -> concatEithersL <$> mapM f days
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--------------------------------------------------------------------------------
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-- budget
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-- each budget (designated at the top level by a 'name') is processed in the
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-- following steps
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-- 1. expand all transactions given the desired date range and date patterns for
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-- each directive in the budget
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-- 2. sort all transactions by date
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-- 3. propagate all balances forward, and while doing so assign values to each
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-- transaction (some of which depend on the 'current' balance of the
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-- target account)
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-- 4. assign shadow transactions (TODO)
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-- 5. insert all transactions
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insertBudget :: MonadFinance m => Budget -> SqlPersistT m [InsertError]
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insertBudget Budget {budgetLabel = name, income = is, transfers = es, shadowTransfers = ss} = do
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res1 <- mapM (insertIncome name) is
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res2 <- expandTransfers name es
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unlessLefts (concatEithers2 (fmap concat $ concatEithersL res1) res2 (++)) $
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\txs -> do
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unlessLefts (addShadowTransfers ss txs) $ \shadow -> do
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let bals = balanceTransfers $ txs ++ shadow
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concat <$> mapM insertBudgetTx bals
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-- TODO this is going to be O(n*m), which might be a problem?
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addShadowTransfers :: [ShadowTransfer] -> [BudgetTxType] -> EitherErrs [BudgetTxType]
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addShadowTransfers ms txs =
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fmap catMaybes $
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concatEitherL $
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fmap (uncurry fromShadow) $
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[(t, m) | t <- txs, m <- ms]
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fromShadow :: BudgetTxType -> ShadowTransfer -> EitherErr (Maybe BudgetTxType)
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fromShadow tx t@ShadowTransfer {stFrom, stTo, stDesc, stRatio} = do
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res <- shadowMatches (stMatch t) tx
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return $
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if not res
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then Nothing
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else
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Just $
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BudgetTxType
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{ bttTx =
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-- TODO does this actually share the same metadata as the "parent" tx?
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BudgetTx
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{ btMeta = btMeta $ bttTx tx
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, btWhen = btWhen $ bttTx tx
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, -- TODO what are these supposed to do?
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btFrom = BudgetSplit stFrom Nothing
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, btTo = BudgetSplit stTo Nothing
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, btValue = dec2Rat stRatio * (btValue $ bttTx tx)
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, btDesc = stDesc
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}
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, bttType = FixedAmt
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}
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shadowMatches :: ShadowMatch -> BudgetTxType -> EitherErr Bool
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shadowMatches ShadowMatch {smFrom, smTo, smDate, smVal} tx = do
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-- TODO what does the amount do for each of the different types?
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valRes <- valMatches smVal (btValue tx_)
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return $
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memberMaybe (bsAcnt $ btFrom tx_) smFrom
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&& memberMaybe (bsAcnt $ btTo tx_) smTo
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&& maybe True (`dateMatches` (btWhen tx_)) smDate
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&& valRes
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where
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tx_ = bttTx tx
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memberMaybe x AcntSet {asList, asInclude} =
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(if asInclude then id else not) $ x `elem` asList
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balanceTransfers :: [BudgetTxType] -> [BudgetTx]
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balanceTransfers ts = snd $ L.mapAccumR go initBals $ L.sortOn (btWhen . bttTx) ts
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where
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initBals =
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M.fromList $
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fmap (,0) $
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L.nub $
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(fmap (bsAcnt . btTo . bttTx) ts ++ fmap (bsAcnt . btTo . bttTx) ts)
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updateBal x = M.update (Just . (+ x))
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lookupBal = M.findWithDefault (error "this should not happen")
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go bals btt =
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let tx = bttTx btt
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from = bsAcnt $ btFrom tx
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to = bsAcnt $ btTo tx
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bal = lookupBal to bals
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x = amtToMove bal (bttType btt) (btValue tx)
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in (updateBal x to $ updateBal (-x) from bals, tx {btValue = x})
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-- TODO might need to query signs to make this intuitive; as it is this will
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-- probably work, but for credit accounts I might need to supply a negative
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-- target value
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amtToMove _ FixedAmt x = x
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amtToMove bal Percent x = -(x / 100 * bal)
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amtToMove bal Target x = x - bal
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-- TODO allow currency conversions here
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data BudgetSplit b = BudgetSplit
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{ bsAcnt :: !AcntID
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, bsBucket :: !(Maybe b)
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}
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data BudgetMeta = BudgetMeta
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{ bmCommit :: !(Key CommitR)
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, bmCur :: !BudgetCurrency
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, bmName :: !T.Text
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}
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data BudgetTx = BudgetTx
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{ btMeta :: !BudgetMeta
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, btWhen :: !Day
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, btFrom :: !(BudgetSplit IncomeBucket)
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, btTo :: !(BudgetSplit ExpenseBucket)
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, btValue :: !Rational
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, btDesc :: !T.Text
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}
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data BudgetTxType = BudgetTxType
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{ bttType :: !AmountType
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, bttTx :: !BudgetTx
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}
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insertIncome :: MonadFinance m => T.Text -> Income -> SqlPersistT m (EitherErrs [BudgetTxType])
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insertIncome
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name
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i@Income {incWhen, incCurrency, incFrom, incPretax, incPosttax, incTaxes, incToBal} =
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whenHash CTIncome i (Right []) $ \c -> do
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let meta = BudgetMeta c (NoX incCurrency) name
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let balRes = balanceIncome i
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fromRes <- lift $ checkAcntType IncomeT incFrom (\j -> BudgetSplit j . Just)
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toRes <- lift $ expandTarget incToBal
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case concatEither3 balRes fromRes toRes (,,) of
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Left es -> return $ Left es
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Right (balance, fromFun, to) ->
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fmap (fmap (concat . concat)) $
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withDates incWhen $ \day -> do
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let fromAllos b =
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fmap (fmap concat . concatEitherL)
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. mapM (lift . fromAllo day meta (fromFun b))
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pre <- fromAllos PreTax incPretax
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tax <-
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concatEitherL
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<$> mapM (lift . fromTax day meta (fromFun IntraTax)) incTaxes
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post <- fromAllos PostTax incPosttax
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let bal =
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BudgetTxType
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{ bttTx =
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BudgetTx
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{ btMeta = meta
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, btWhen = day
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, btFrom = fromFun PostTax
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, btTo = to
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, btValue = balance
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, btDesc = "balance after deductions"
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}
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, bttType = FixedAmt
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}
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return $ concatEithersL [Right [bal], tax, pre, post]
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fromAllo
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:: MonadFinance m
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=> Day
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-> BudgetMeta
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-> BudgetSplit IncomeBucket
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-> Allocation
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-> m (EitherErr [BudgetTxType])
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fromAllo day meta from Allocation {alloPath, alloAmts} = do
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-- TODO this is going to be repeated a zillion times (might matter)
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res <- expandTarget alloPath
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return $ (\to -> fmap (toBT to) alloAmts) <$> res
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where
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toBT to (Amount desc v) =
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BudgetTxType
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{ bttTx =
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BudgetTx
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{ btFrom = from
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, btWhen = day
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, btTo = to
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, btValue = dec2Rat v
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, btDesc = desc
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, btMeta = meta
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}
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, bttType = FixedAmt
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}
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fromTax
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:: MonadFinance m
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=> Day
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-> BudgetMeta
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-> BudgetSplit IncomeBucket
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-> Tax
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-> m (EitherErr BudgetTxType)
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fromTax day meta from Tax {taxAcnt = to, taxValue = v} =
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-- TODO this is going to be repeated a zillion times (might matter)
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checkAcntType ExpenseT to $ \to_ ->
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BudgetTxType
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{ bttTx =
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BudgetTx
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{ btFrom = from
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, btWhen = day
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, btTo = BudgetSplit to_ (Just Fixed)
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, btValue = dec2Rat v
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, btDesc = ""
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, btMeta = meta
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}
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, bttType = FixedAmt
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}
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balanceIncome :: Income -> EitherErr Rational
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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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}
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| bal < 0 = Left $ IncomeError dp
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| otherwise = Right bal
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where
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bal = dec2Rat g - sum (sumAllocation <$> pre ++ post) - sumTaxes tax
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sumAllocation :: Allocation -> Rational
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sumAllocation = sum . fmap (dec2Rat . amtValue) . alloAmts
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sumTaxes :: [Tax] -> Rational
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sumTaxes = sum . fmap (dec2Rat . taxValue)
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expandTransfers
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:: MonadFinance m
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=> T.Text
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-> [Transfer]
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-> SqlPersistT m (EitherErrs [BudgetTxType])
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expandTransfers name ts = do
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txs <- mapM (expandTransfer name) ts
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return $ L.sortOn (btWhen . bttTx) . concat <$> concatEithersL txs
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expandTransfer :: MonadFinance m => T.Text -> Transfer -> SqlPersistT m (EitherErrs [BudgetTxType])
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expandTransfer name t@Transfer {transAmounts, transTo, transCurrency, transFrom} =
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whenHash CTExpense t (Right []) $ \key ->
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fmap (fmap concat . concatEithersL) $
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forM transAmounts $ \(TimeAmount (Amount desc v) atype pat) -> do
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-- TODO this is going to be repeated a zillion times (might matter)
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res <- lift $ expandTarget transTo
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case res of
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Left e -> return $ Left [e]
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Right to -> withDates pat $ \day ->
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let meta =
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BudgetMeta
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{ bmCur = transCurrency
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, bmCommit = key
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, bmName = name
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}
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tx =
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BudgetTxType
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{ bttTx =
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BudgetTx
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{ btMeta = meta
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, btWhen = day
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, btFrom = BudgetSplit transFrom Nothing
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, btTo = to
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, btValue = dec2Rat v
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, btDesc = desc
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}
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, bttType = atype
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}
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in return $ Right tx
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insertBudgetTx :: MonadFinance m => BudgetTx -> SqlPersistT m [InsertError]
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insertBudgetTx BudgetTx {btFrom, btTo, btMeta, btValue, btDesc, btWhen} = do
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res <- lift $ splitPair (bsAcnt btFrom) (bsAcnt btTo) (bmCur btMeta) btValue
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unlessLefts_ res $ \((sFrom, sTo), exchange) -> do
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insertPair sFrom sTo
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forM_ exchange $ \(xFrom, xTo) -> insertPair xFrom xTo
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where
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insertPair from to = do
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k <- insert $ TransactionR (bmCommit btMeta) btWhen btDesc
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insertBudgetLabel name k IncomeBucketR from btFrom
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insertBudgetLabel name k ExpenseBucketR to btTo
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name = bmName btMeta
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insertBudgetLabel
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:: (MonadUnliftIO m, PersistRecordBackend record SqlBackend)
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=> T.Text
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-> Key TransactionR
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-> (Key BudgetLabelR -> a -> record)
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-> KeySplit
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-> BudgetSplit a
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-> SqlPersistT m ()
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insertBudgetLabel name k bucketType split bs = do
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sk <- insertSplit k split
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bk <- insert $ BudgetLabelR sk name
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forM_ (bsBucket bs) $ insert_ . bucketType bk
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type SplitPair = (KeySplit, KeySplit)
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splitPair
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:: MonadFinance m
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=> AcntID
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-> AcntID
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-> BudgetCurrency
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-> Rational
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-> m (EitherErrs (SplitPair, Maybe SplitPair))
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splitPair from to cur val = case cur of
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NoX curid -> fmap (fmap (,Nothing)) $ pair curid from to val
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X (Exchange {xFromCur, xToCur, xAcnt, xRate}) -> do
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res1 <- pair xFromCur from xAcnt val
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res2 <- pair xToCur xAcnt to (val * dec2Rat xRate)
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return $ concatEithers2 res1 res2 $ \a b -> (a, Just b)
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where
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pair curid from_ to_ v = do
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s1 <- split curid from_ (-v)
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s2 <- split curid to_ v
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return $ concatEithers2 s1 s2 (,)
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split c a v =
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resolveSplit $
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Split
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{ sAcnt = a
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, sValue = v
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, sComment = ""
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, sCurrency = c
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}
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expandTarget
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:: MonadFinance m
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=> TransferTarget
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-> m (EitherErr (BudgetSplit ExpenseBucket))
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expandTarget t = case t of
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ExpenseTarget i b -> checkAcntType ExpenseT i $ (`BudgetSplit` (Just b))
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GenericTarget i ->
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checkAcntTypes (LiabilityT :| [AssetT, EquityT]) i $
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(`BudgetSplit` Nothing)
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checkAcntType
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:: MonadFinance m
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=> AcntType
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-> AcntID
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-> (AcntID -> a)
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-> m (EitherErr a)
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checkAcntType t = checkAcntTypes (t :| [])
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|
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checkAcntTypes
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:: MonadFinance m
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=> NE.NonEmpty AcntType
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-> AcntID
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-> (AcntID -> a)
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-> m (EitherErr a)
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checkAcntTypes ts i f = (go =<<) <$> lookupAccountType i
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where
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go t
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| t `L.elem` ts = Right $ f i
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| otherwise = Left $ AccountError i ts
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|
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--------------------------------------------------------------------------------
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-- statements
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insertStatements :: MonadFinance m => Config -> SqlPersistT m [InsertError]
|
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insertStatements conf = concat <$> mapM insertStatement (statements conf)
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insertStatement :: MonadFinance m => Statement -> SqlPersistT m [InsertError]
|
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insertStatement (StmtManual m) = insertManual m
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insertStatement (StmtImport i) = insertImport i
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|
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insertManual :: MonadFinance m => Manual -> SqlPersistT 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 <- lift $ askDBState kmStatementInterval
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-- let days = expandDatePat bounds dp
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let dayRes = expandDatePat bounds dp
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unlessLefts dayRes $ \days -> do
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txRes <- mapM (lift . tx) days
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unlessLefts_ (concatEithersL txRes) $ 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 :: MonadFinance m => Import -> SqlPersistT m [InsertError]
|
|
insertImport i = whenHash CTImport i [] $ \c -> do
|
|
-- TODO this isn't efficient, the whole file will be read and maybe no
|
|
-- transactions will be desired
|
|
recoverIO (lift $ readImport i) $ \r -> unlessLefts r $ \bs -> do
|
|
bounds <- expandBounds <$> lift (askDBState kmStatementInterval)
|
|
res <- mapM (lift . resolveTx) $ filter (inBounds bounds . txDate) bs
|
|
unlessLefts_ (concatEithersL res) $ mapM_ (insertTx c)
|
|
where
|
|
recoverIO x rest = do
|
|
res <- tryIO x
|
|
case res of
|
|
Right r -> rest r
|
|
-- If file is not found (or something else happens) then collect the
|
|
-- error try the remaining imports
|
|
Left e -> return [InsertIOError $ showT e]
|
|
|
|
--------------------------------------------------------------------------------
|
|
-- low-level transaction stuff
|
|
|
|
txPair
|
|
:: MonadFinance m
|
|
=> Day
|
|
-> AcntID
|
|
-> AcntID
|
|
-> CurID
|
|
-> Rational
|
|
-> T.Text
|
|
-> m (EitherErrs KeyTx)
|
|
txPair day from to cur val desc = resolveTx tx
|
|
where
|
|
split a v = Split {sAcnt = a, sValue = v, sComment = "", sCurrency = cur}
|
|
tx =
|
|
Tx
|
|
{ txDescr = desc
|
|
, txDate = day
|
|
, txTags = []
|
|
, txSplits = [split from (-val), split to val]
|
|
}
|
|
|
|
resolveTx :: MonadFinance m => BalTx -> m (EitherErrs KeyTx)
|
|
resolveTx t@Tx {txSplits = ss} = do
|
|
res <- concatEithersL <$> mapM resolveSplit ss
|
|
return $ fmap (\kss -> t {txSplits = kss}) res
|
|
|
|
resolveSplit :: MonadFinance m => BalSplit -> m (EitherErrs KeySplit)
|
|
resolveSplit s@Split {sAcnt = p, sCurrency = c, sValue = v} = do
|
|
aid <- lookupAccountKey p
|
|
cid <- lookupCurrency c
|
|
sign <- lookupAccountSign p
|
|
-- TODO correct sign here?
|
|
-- TODO lenses would be nice here
|
|
return $ concatEither3 aid cid sign $ \aid_ cid_ sign_ ->
|
|
s
|
|
{ sAcnt = aid_
|
|
, sCurrency = cid_
|
|
, sValue = v * fromIntegral (sign2Int sign_)
|
|
}
|
|
|
|
insertTx :: MonadUnliftIO m => Key CommitR -> KeyTx -> SqlPersistT m ()
|
|
insertTx c Tx {txDate = d, txDescr = e, txSplits = ss} = do
|
|
k <- insert $ TransactionR c d e
|
|
mapM_ (insertSplit k) ss
|
|
|
|
insertSplit :: MonadUnliftIO m => Key TransactionR -> KeySplit -> SqlPersistT m (Key SplitR)
|
|
insertSplit t Split {sAcnt = aid, sCurrency = cid, sValue = v, sComment = c} = do
|
|
insert $ SplitR t cid aid c v
|
|
|
|
lookupAccount :: MonadFinance m => AcntID -> m (EitherErr (Key AccountR, AcntSign, AcntType))
|
|
lookupAccount p = lookupErr (DBKey AcntField) p <$> (askDBState kmAccount)
|
|
|
|
lookupAccountKey :: MonadFinance m => AcntID -> m (EitherErr (Key AccountR))
|
|
lookupAccountKey = (fmap (fmap fstOf3)) . lookupAccount
|
|
|
|
lookupAccountSign :: MonadFinance m => AcntID -> m (EitherErr AcntSign)
|
|
lookupAccountSign = fmap (fmap sndOf3) . lookupAccount
|
|
|
|
lookupAccountType :: MonadFinance m => AcntID -> m (EitherErr AcntType)
|
|
lookupAccountType = fmap (fmap thdOf3) . lookupAccount
|
|
|
|
lookupCurrency :: MonadFinance m => T.Text -> m (EitherErr (Key CurrencyR))
|
|
lookupCurrency c = lookupErr (DBKey CurField) c <$> (askDBState kmCurrency)
|
|
|
|
-- TODO this hashes twice (not that it really matters)
|
|
whenHash
|
|
:: (Hashable a, MonadFinance m)
|
|
=> ConfigType
|
|
-> a
|
|
-> b
|
|
-> (Key CommitR -> SqlPersistT m b)
|
|
-> SqlPersistT m b
|
|
whenHash t o def f = do
|
|
let h = hash o
|
|
hs <- lift $ askDBState kmNewCommits
|
|
if h `elem` hs then f =<< insert (CommitR h t) else return def
|