1 files changed, 42 insertions, 0 deletions

diff --git a/server/src/Thermoprint/Server/QMConfig.hs b/server/src/Thermoprint/Server/QMConfig.hs
new file mode 100644
index 0000000..0cf7beb
--- /dev/null
+++ b/server/src/Thermoprint/Server/QMConfig.hs
@@ -0,0 +1,42 @@
+{-# LANGUAGE GADTs              #-}
+{-# LANGUAGE FlexibleContexts   #-}
+{-# LANGUAGE ImpredicativeTypes #-}
+{-# LANGUAGE TypeOperators      #-}
+
+module Thermoprint.Server.QMConfig
+       ( QMConfig(..)
+       ) where
+
+import Control.Monad.Trans.Resource
+import Control.Monad.Trans.Control
+import Control.Monad.Trans.Identity
+import Control.Monad.Logger
+import Control.Monad.Reader
+import Control.Monad.IO.Class
+import Control.Monad.Morph
+import Control.Category
+import Prelude hiding (id, (.))
+import Servant.Server.Internal.Enter (enter, (:~>)(..))
+
+import Data.Default.Class
+
+import Control.Concurrent.STM
+
+import Thermoprint.Server.Queue
+
+data QMConfig m where
+  QMConfig :: ( MonadTrans t
+              , MFunctor t
+              , Monad (t STM)
+              , MonadIO (t IO)
+              ) => QueueManager t -> (t IO) :~> m -> QMConfig m
+  QMConfig' :: ( MonadIO m
+               ) => ( forall t. ( MonadTrans t
+                                , MFunctor t
+                                , Monad (t STM)
+                                , MonadIO (t IO)
+                                ) => QueueManager t
+                    ) -> QMConfig m
+
+instance MonadIO m => Default (QMConfig m) where
+  def = QMConfig idQM $ Nat (liftIO . runIdentityT)