Import.hs

module Bloodhound.Import
  ( module X,
    LByteString,
    Method,
    omitNulls,
    parseNEJSON,
    parseReadText,
    readMay,
    showText,
    deleteSeveral,
    oPath,
    tshow,
  )
where

import Control.Applicative as X (Alternative (..), optional)
import Control.Exception as X (Exception)
import Control.Monad as X (MonadPlus (..), forM, (<=<))
import Control.Monad.Catch as X
  ( MonadCatch,
    MonadMask,
    MonadThrow,
  )
import Control.Monad.Except as X (MonadError)
import Control.Monad.Fix as X (MonadFix)
import Control.Monad.IO.Class as X (MonadIO (..))
import Control.Monad.Reader as X
  ( MonadReader (..),
    MonadTrans (..),
    ReaderT (..),
  )
import Control.Monad.State as X (MonadState)
import Control.Monad.Writer as X (MonadWriter)
import Data.Aeson as X
import Data.Aeson.Key as X
import qualified Data.Aeson.KeyMap as X
import Data.Aeson.Types as X
  ( Pair,
    Parser,
    emptyObject,
    parseEither,
    parseMaybe,
    typeMismatch,
  )
import Data.Bifunctor as X (first)
import qualified Data.ByteString.Lazy as BL
import Data.Char as X (isNumber)
import Data.Hashable as X (Hashable)
import Data.List as X (foldl', intercalate, nub)
import Data.List.NonEmpty as X (NonEmpty (..), toList)
import Data.Maybe as X
  ( catMaybes,
    fromMaybe,
    isNothing,
    maybeToList,
  )
import Data.Scientific as X (Scientific)
import Data.Semigroup as X (Semigroup (..))
import Data.Text as X (Text)
import qualified Data.Text as T
import Data.Time.Calendar as X (Day (..), showGregorian)
import Data.Time.Clock as X (NominalDiffTime, UTCTime)
import Data.Time.Clock.POSIX as X
import qualified Data.Traversable as DT
import qualified Data.Vector as V
import qualified Network.HTTP.Types.Method as NHTM

type LByteString = BL.ByteString

type Method = NHTM.Method

readMay :: Read a => String -> Maybe a
readMay s = case reads s of
  (a, "") : _ -> Just a
  _ -> Nothing

parseReadText :: Read a => Text -> Parser a
parseReadText = maybe mzero return . readMay . T.unpack

showText :: Show a => a -> Text
showText = T.pack . show

omitNulls :: [(Key, Value)] -> Value
omitNulls = object . filter notNull
  where
    notNull (_, Null) = False
    notNull (_, Array a) = (not . V.null) a
    notNull _ = True

parseNEJSON :: (FromJSON a) => [Value] -> Parser (NonEmpty a)
parseNEJSON [] = fail "Expected non-empty list"
parseNEJSON (x : xs) = DT.mapM parseJSON (x :| xs)

deleteSeveral :: [Key] -> X.KeyMap v -> X.KeyMap v
deleteSeveral ks km = foldr X.delete km ks

oPath :: ToJSON a => NonEmpty Key -> a -> Value
oPath (k :| []) v = object [k .= v]
oPath (k :| (h : t)) v = object [k .= oPath (h :| t) v]

tshow :: Show a => a -> Text
tshow = T.pack . show