app/SlackBuilder/Trans.hs


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module SlackBuilder.Trans
    ( SlackBuilderT(..)
    ) where

import Control.Monad.Trans.Reader (ReaderT(..))
import SlackBuilder.Config
import Control.Monad.IO.Class (MonadIO(..))

newtype SlackBuilderT a = SlackBuilderT
    { runSlackBuilderT :: ReaderT Settings IO a
    }

instance Functor SlackBuilderT
  where
    fmap f (SlackBuilderT slackBuilderT) = SlackBuilderT $ f <$> slackBuilderT

instance Applicative SlackBuilderT
  where
    pure = SlackBuilderT . pure
    (SlackBuilderT f) <*> (SlackBuilderT x) = SlackBuilderT $ f <*> x

instance Monad SlackBuilderT
  where
    return = pure
    (SlackBuilderT x) >>= f = SlackBuilderT $ x >>= runSlackBuilderT . f

instance MonadIO SlackBuilderT
  where
    liftIO = SlackBuilderT . liftIO