[API] WebSockets (WIP)

package.yaml

@@ -217,6 +217,7 @@ library:
   - servant-static-th
   - servant-swagger
   - servant-swagger-ui
+  - servant-websockets
   - servant-xml
   - simple-reflect
   - singletons # (IGraph)

src/Gargantext/API.hs

@@ -178,9 +178,6 @@ makeDevMiddleware mode = do
 -- | API Global
 ---------------------------------------------------------------------
 
----------------------------
-
-
 -- TODO-SECURITY admin only: withAdmin
 -- Question: How do we mark admins?
 {-
@@ -226,4 +223,4 @@ type family GenericTypeName t (r :: *) :: Symbol where
     GenericTypeName t (D1 ('MetaData name mod pkg nt) f x) = name
 
 type Desc t n = Description (AppendSymbol (TypeName t) (AppendSymbol " | " n))
--}
+-}
\ No newline at end of file

src/Gargantext/API/Routes.hs

@@ -26,6 +26,12 @@ module Gargantext.API.Routes
 import Control.Concurrent (threadDelay)
 import Control.Lens (view)
 import Data.Text (Text)
+
+import Data.Aeson (Value)
+import Data.Conduit (ConduitT)
+import Servant.API.WebSocketConduit (WebSocketConduit, WebSocketSource) 
+import qualified Data.Conduit.List as CL
+
 import Data.Validity
 import Gargantext.API.Admin.Auth.Types (AuthRequest, AuthResponse, AuthenticatedUser(..), PathId(..))
 import Gargantext.API.Admin.Auth (withAccess)
@@ -168,6 +174,10 @@ type GargPrivateAPI' =
                          :> Capture "x" Int
                          :> WaitAPI -- Get '[JSON] Int
 -}
+
+           :<|> "ws"    :> Summary "WebSocket Test Route"
+                        :> WebSocketConduit Value Value
+
 -- /mv/<id>/<id>
 -- /merge/<id>/<id>
 -- /rename/<id>
@@ -239,7 +249,12 @@ serverPrivateGargAPI' (AuthenticatedUser (NodeId uid))
      -- :<|> New.info uid -- TODO-SECURITY
      :<|> List.api
 --     :<|> waitAPI
+     :<|> echo
+    
 
+-- FIXME which Monad type it is ?
+-- echo :: ConduitT Value Value ?? ()
+echo = CL.map identity
 
 ----------------------------------------------------------------------
 -- For Tests

src/Gargantext/Core/Text/Metrics/FrequentItemSet.hs

@@ -90,7 +90,10 @@ fisWithSize n f is = case n of
 fisWith :: Maybe ([Item] -> Bool) -> Frequency -> [[Item]] -> [Fis]
 fisWith s f is = case filter (not . null) is of
                    [] -> []
-                   js -> catMaybes $ map items2fis $ filter' $ runLCMmatrix js f
+                   js -> catMaybes
+                       $ map items2fis
+                       $ filter'
+                       $ runLCMmatrix js f
 -- drop unMaybe
   where
     filter' = case s of