428 lines
13 KiB
Haskell
428 lines
13 KiB
Haskell
module Internal.Database
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( runDB
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, nukeTables
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, updateHashes
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, updateDBState
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, getDBState
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, tree2Records
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, flattenAcntRoot
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, paths2IDs
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, mkPool
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, whenHash
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, whenHash_
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, insertEntry
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, resolveEntry
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)
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where
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import Conduit
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import Control.Monad.Except
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import Control.Monad.Logger
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import Data.Hashable
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import Database.Esqueleto.Experimental ((==.), (^.))
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import qualified Database.Esqueleto.Experimental as E
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import Database.Esqueleto.Internal.Internal (SqlSelect)
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import Database.Persist.Monad
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import Database.Persist.Sqlite hiding
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( delete
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, deleteWhere
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, insert
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, insertKey
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, insert_
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, runMigration
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, (==.)
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, (||.)
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)
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import GHC.Err
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import Internal.Types.Main
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import Internal.Utils
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import RIO hiding (LogFunc, isNothing, on, (^.))
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import RIO.List ((\\))
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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 N
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import qualified RIO.Text as T
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runDB
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:: MonadUnliftIO m
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=> SqlConfig
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-> SqlQueryT (NoLoggingT m) a
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-> m a
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runDB c more =
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runNoLoggingT $ do
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pool <- mkPool c
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runSqlQueryT pool $ do
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_ <- lift askLoggerIO
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runMigration migrateAll
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more
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mkPool :: (MonadLoggerIO m, MonadUnliftIO m) => SqlConfig -> m ConnectionPool
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mkPool c = case c of
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Sqlite p -> createSqlitePool p 10
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-- conn <- open p
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-- wrapConnection conn logfn
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Postgres -> error "postgres not implemented"
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nukeTables :: MonadSqlQuery m => m ()
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nukeTables = do
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deleteWhere ([] :: [Filter CommitR])
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deleteWhere ([] :: [Filter CurrencyR])
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deleteWhere ([] :: [Filter AccountR])
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deleteWhere ([] :: [Filter TransactionR])
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-- showBalances :: MonadUnliftIO m => SqlPersistT m ()
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-- showBalances = do
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-- xs <- select $ do
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-- (accounts :& splits :& txs) <-
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-- from
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-- $ table @AccountR
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-- `innerJoin` table @SplitR
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-- `on` (\(a :& s) -> a ^. AccountRId ==. s ^. SplitRAccount)
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-- `innerJoin` table @TransactionR
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-- `on` (\(_ :& s :& t) -> s ^. SplitRTransaction ==. t ^. TransactionRId)
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-- where_ $
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-- isNothing (txs ^. TransactionRBucket)
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-- &&. ( (accounts ^. AccountRFullpath `like` val "asset" ++. (%))
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-- ||. (accounts ^. AccountRFullpath `like` val "liability" ++. (%))
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-- )
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-- groupBy (accounts ^. AccountRFullpath, accounts ^. AccountRName)
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-- return
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-- ( accounts ^. AccountRFullpath
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-- , accounts ^. AccountRName
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-- , sum_ $ splits ^. SplitRValue
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-- )
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-- -- TODO super stetchy table printing thingy
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-- liftIO $ do
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-- putStrLn $ T.unpack $ fmt "Account" "Balance"
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-- putStrLn $ T.unpack $ fmt (T.replicate 60 "-") (T.replicate 15 "-")
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-- mapM_ (putStrLn . T.unpack . fmtBalance) xs
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-- where
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-- fmtBalance (path, name, bal) = fmt (toFullPath path name) (toBal bal)
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-- fmt a b = T.unwords ["| ", pad 60 a, " | ", pad 15 b, " |"]
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-- pad n xs = T.append xs $ T.replicate (n - T.length xs) " "
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-- toFullPath path name = T.unwords [unValue @T.Text path, "/", unValue @T.Text name]
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-- toBal = maybe "???" (fmtRational 2) . unValue
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hashConfig :: Config -> [Int]
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hashConfig
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Config_
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{ budget = bs
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, statements = ss
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} = (hash <$> bs) ++ (hash <$> ms) ++ (hash <$> ps)
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where
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(ms, ps) = partitionEithers $ fmap go ss
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go (HistTransfer x) = Left x
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go (HistStatement x) = Right x
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setDiff :: Eq a => [a] -> [a] -> ([a], [a])
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-- setDiff = setDiff' (==)
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setDiff as bs = (as \\ bs, bs \\ as)
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-- setDiff' :: Eq a => (a -> b -> Bool) -> [a] -> [b] -> ([a], [b])
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-- setDiff' f = go []
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-- where
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-- go inA [] bs = (inA, bs)
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-- go inA as [] = (as ++ inA, [])
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-- go inA (a:as) bs = case inB a bs of
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-- Just bs' -> go inA as bs'
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-- Nothing -> go (a:inA) as bs
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-- inB _ [] = Nothing
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-- inB a (b:bs)
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-- | f a b = Just bs
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-- | otherwise = inB a bs
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getDBHashes :: MonadSqlQuery m => m [Int]
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getDBHashes = fmap (commitRHash . entityVal) <$> dumpTbl
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nukeDBHash :: MonadSqlQuery m => Int -> m ()
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nukeDBHash h = deleteE $ do
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c <- E.from E.table
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E.where_ (c ^. CommitRHash ==. E.val h)
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nukeDBHashes :: MonadSqlQuery m => [Int] -> m ()
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nukeDBHashes = mapM_ nukeDBHash
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getConfigHashes :: MonadSqlQuery m => Config -> m ([Int], [Int])
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getConfigHashes c = do
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let ch = hashConfig c
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dh <- getDBHashes
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return $ setDiff dh ch
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dumpTbl :: (MonadSqlQuery m, PersistEntity r) => m [Entity r]
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dumpTbl = selectE $ E.from E.table
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deleteAccount :: MonadSqlQuery m => Entity AccountR -> m ()
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deleteAccount e = deleteE $ do
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c <- E.from $ E.table @AccountR
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E.where_ (c ^. AccountRId ==. E.val k)
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where
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k = entityKey e
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deleteCurrency :: MonadSqlQuery m => Entity CurrencyR -> m ()
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deleteCurrency e = deleteE $ do
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c <- E.from $ E.table @CurrencyR
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E.where_ (c ^. CurrencyRId ==. E.val k)
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where
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k = entityKey e
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deleteTag :: MonadSqlQuery m => Entity TagR -> m ()
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deleteTag e = deleteE $ do
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c <- E.from $ E.table @TagR
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E.where_ (c ^. TagRId ==. E.val k)
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where
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k = entityKey e
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-- TODO slip-n-slide code...
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insertFull
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:: (PersistRecordBackend r SqlBackend, Typeable r, MonadSqlQuery m)
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=> Entity r
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-> m ()
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insertFull (Entity k v) = insertKey k v
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currency2Record :: Currency -> Entity CurrencyR
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currency2Record c@Currency {curSymbol, curFullname, curPrecision} =
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Entity (toKey c) $ CurrencyR curSymbol curFullname (fromIntegral curPrecision)
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currencyMap :: [Entity CurrencyR] -> CurrencyMap
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currencyMap =
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M.fromList
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. fmap
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( \e ->
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( currencyRSymbol $ entityVal e
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, (entityKey e, fromIntegral $ currencyRPrecision $ entityVal e)
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)
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)
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toKey :: (ToBackendKey SqlBackend b, Hashable a) => a -> Key b
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toKey = toSqlKey . fromIntegral . hash
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tree2Entity :: AcntType -> [T.Text] -> T.Text -> T.Text -> Entity AccountR
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tree2Entity t parents name des =
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Entity (toSqlKey $ fromIntegral h) $
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AccountR name (toPath parents) des
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where
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p = AcntPath t (reverse (name : parents))
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h = hash p
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toPath = T.intercalate "/" . (atName t :) . reverse
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tree2Records
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:: AcntType
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-> AccountTree
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-> ([Entity AccountR], [AccountPathR], [(AcntPath, (AccountRId, AcntSign, AcntType))])
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tree2Records t = go []
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where
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go ps (Placeholder d n cs) =
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let e = tree2Entity t (fmap snd ps) n d
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k = entityKey e
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(as, aps, ms) = L.unzip3 $ fmap (go ((k, n) : ps)) cs
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a0 = acnt k n (fmap snd ps) d
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paths = expand k $ fmap fst ps
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in (a0 : concat as, paths ++ concat aps, concat ms)
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go ps (Account d n) =
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let e = tree2Entity t (fmap snd ps) n d
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k = entityKey e
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in ( [acnt k n (fmap snd ps) d]
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, expand k $ fmap fst ps
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, [(AcntPath t $ reverse $ n : fmap snd ps, (k, sign, t))]
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)
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toPath = T.intercalate "/" . (atName t :) . reverse
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acnt k n ps = Entity k . AccountR n (toPath ps)
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expand h0 hs = (\(h, d) -> AccountPathR h h0 d) <$> zip (h0 : hs) [0 ..]
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sign = accountSign t
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paths2IDs :: [(AcntPath, a)] -> [(AcntID, a)]
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paths2IDs =
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uncurry zip
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. first trimNames
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. L.unzip
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. L.sortOn fst
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. fmap (first pathList)
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where
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pathList (AcntPath t []) = atName t :| []
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pathList (AcntPath t ns) = N.reverse $ atName t :| ns
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-- none of these errors should fire assuming that input is sorted and unique
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trimNames :: [N.NonEmpty T.Text] -> [AcntID]
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trimNames = fmap (T.intercalate "_" . reverse) . trimAll 0
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where
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trimAll _ [] = []
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trimAll i (y : ys) = case L.foldl' (matchPre i) (y, [], []) ys of
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(a, [], bs) -> reverse $ trim i a : bs
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(a, as, bs) -> reverse bs ++ trimAll (i + 1) (reverse $ a : as)
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matchPre i (y, ys, old) new = case (y !? i, new !? i) of
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(Nothing, Just _) ->
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case ys of
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[] -> (new, [], trim i y : old)
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_ -> err "unsorted input"
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(Just _, Nothing) -> err "unsorted input"
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(Nothing, Nothing) -> err "duplicated inputs"
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(Just a, Just b)
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| a == b -> (new, y : ys, old)
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| otherwise ->
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let next = case ys of
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[] -> [trim i y]
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_ -> trimAll (i + 1) (reverse $ y : ys)
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in (new, [], reverse next ++ old)
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trim i = N.take (i + 1)
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err msg = errorWithoutStackTrace $ "Import.Database.Ops.hs: " ++ msg
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(!?) :: N.NonEmpty a -> Int -> Maybe a
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xs !? n
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| n < 0 = Nothing
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-- Definition adapted from GHC.List
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| otherwise =
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foldr
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( \x r k -> case k of
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0 -> Just x
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_ -> r (k - 1)
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)
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(const Nothing)
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xs
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n
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flattenAcntRoot :: AccountRoot -> [(AcntType, AccountTree)]
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flattenAcntRoot AccountRoot_ {arIncome, arExpenses, arLiabilities, arAssets, arEquity} =
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((IncomeT,) <$> arIncome)
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++ ((ExpenseT,) <$> arExpenses)
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++ ((LiabilityT,) <$> arLiabilities)
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++ ((AssetT,) <$> arAssets)
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++ ((EquityT,) <$> arEquity)
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indexAcntRoot :: AccountRoot -> ([Entity AccountR], [AccountPathR], AccountMap)
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indexAcntRoot r =
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( concat ars
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, concat aprs
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, M.fromList $ paths2IDs $ concat ms
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)
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where
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(ars, aprs, ms) = L.unzip3 $ uncurry tree2Records <$> flattenAcntRoot r
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getDBState
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:: (MonadInsertError m, MonadSqlQuery m)
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=> Config
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-> m (DBState, DBUpdates)
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getDBState c = do
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(del, new) <- getConfigHashes c
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combineError bi si $ \b s ->
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( DBState
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{ kmCurrency = currencyMap cs
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, kmAccount = am
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, kmBudgetInterval = b
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, kmStatementInterval = s
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, kmTag = tagMap ts
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, kmNewCommits = new
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}
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, DBUpdates
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{ duOldCommits = del
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, duNewTagIds = ts
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, duNewAcntPaths = paths
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, duNewAcntIds = acnts
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, duNewCurrencyIds = cs
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}
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)
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where
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bi = liftExcept $ resolveDaySpan $ budgetInterval $ global c
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si = liftExcept $ resolveDaySpan $ statementInterval $ global c
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(acnts, paths, am) = indexAcntRoot $ accounts c
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cs = currency2Record <$> currencies c
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ts = toRecord <$> tags c
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toRecord t@Tag {tagID, tagDesc} = Entity (toKey t) $ TagR tagID tagDesc
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tagMap = M.fromList . fmap (\e -> (tagRSymbol $ entityVal e, entityKey e))
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updateHashes :: (MonadSqlQuery m) => DBUpdates -> m ()
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updateHashes DBUpdates {duOldCommits} = nukeDBHashes duOldCommits
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updateTags :: (MonadFinance m, MonadSqlQuery m) => DBUpdates -> m ()
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updateTags DBUpdates {duNewTagIds} = do
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tags' <- selectE $ E.from $ E.table @TagR
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let (toIns, toDel) = setDiff duNewTagIds tags'
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mapM_ deleteTag toDel
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mapM_ insertFull toIns
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updateAccounts :: (MonadFinance m, MonadSqlQuery m) => DBUpdates -> m ()
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updateAccounts DBUpdates {duNewAcntIds, duNewAcntPaths} = do
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acnts' <- dumpTbl
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let (toIns, toDel) = setDiff duNewAcntIds acnts'
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deleteWhere ([] :: [Filter AccountPathR])
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mapM_ deleteAccount toDel
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mapM_ insertFull toIns
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mapM_ insert duNewAcntPaths
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updateCurrencies :: (MonadFinance m, MonadSqlQuery m) => DBUpdates -> m ()
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updateCurrencies DBUpdates {duNewCurrencyIds} = do
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curs' <- selectE $ E.from $ E.table @CurrencyR
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let (toIns, toDel) = setDiff duNewCurrencyIds curs'
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mapM_ deleteCurrency toDel
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mapM_ insertFull toIns
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updateDBState :: (MonadFinance m, MonadSqlQuery m) => DBUpdates -> m ()
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updateDBState u = do
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updateHashes u
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updateTags u
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updateAccounts u
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updateCurrencies u
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deleteE :: (MonadSqlQuery m) => E.SqlQuery () -> m ()
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deleteE q = unsafeLiftSql "esqueleto-delete" (E.delete q)
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selectE :: (MonadSqlQuery m, SqlSelect a r) => E.SqlQuery a -> m [r]
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selectE q = unsafeLiftSql "esqueleto-select" (E.select q)
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whenHash
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:: (Hashable a, MonadFinance m, MonadSqlQuery m)
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=> ConfigType
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-> a
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-> b
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-> (CommitRId -> m b)
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-> 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 <- askDBState kmNewCommits
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if h `elem` hs then f =<< insert (CommitR h t) else return def
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whenHash_
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:: (Hashable a, MonadFinance m)
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=> ConfigType
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-> a
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-> m b
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-> m (Maybe (CommitR, b))
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whenHash_ t o f = do
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let h = hash o
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let c = CommitR h t
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hs <- askDBState kmNewCommits
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if h `elem` hs then Just . (c,) <$> f else return Nothing
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insertEntry :: MonadSqlQuery m => TransactionRId -> KeyEntry -> m EntryRId
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insertEntry
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t
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FullEntry
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{ feEntry = Entry {eValue, eTags, eAcnt, eComment}
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, feCurrency
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, feIndex
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, feDeferred
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} =
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do
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k <- insert $ EntryR t feCurrency eAcnt eComment eValue feIndex defval deflink
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mapM_ (insert_ . TagRelationR k) eTags
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return k
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where
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(defval, deflink) = case feDeferred of
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(Just (EntryLinked index scale)) -> (Just scale, Just $ fromIntegral index)
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(Just (EntryBalance target)) -> (Just target, Nothing)
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Nothing -> (Nothing, Nothing)
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resolveEntry :: (MonadInsertError m, MonadFinance m) => BalEntry -> m KeyEntry
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resolveEntry s@FullEntry {feEntry = e@Entry {eValue, eTags, eAcnt}, feCurrency} = do
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let aRes = lookupAccountKey eAcnt
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let cRes = lookupCurrencyKey feCurrency
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let sRes = lookupAccountSign eAcnt
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let tagRes = combineErrors $ fmap lookupTag eTags
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-- TODO correct sign here?
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-- TODO lenses would be nice here
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combineError (combineError3 aRes cRes sRes (,,)) tagRes $
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\(aid, cid, sign) tags ->
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s
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{ feCurrency = cid
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, feEntry = e {eAcnt = aid, eValue = fromIntegral (sign2Int sign) * eValue, eTags = tags}
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}
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