[GRAPH] Version number of List in Graph Type

src/Gargantext/Viz/Graph.hs

@@ -83,11 +83,23 @@ instance ToSchema LegendField where
   declareNamedSchema = genericDeclareNamedSchema (unPrefixSwagger "_lf_")
 
 makeLenses ''LegendField
+---------------------------------------------------------------
+type Version = Int
+data ListForGraph = ListForGraph { _lfg_listId  :: ListId
+                                 , _lfg_version :: Version
+                 } deriving (Show, Generic)
+$(deriveJSON (unPrefix "_lfg_") ''ListForGraph)
+
+instance ToSchema ListForGraph where
+  declareNamedSchema = genericDeclareNamedSchema (unPrefixSwagger "_lfg_")
+
+makeLenses ''ListForGraph
+
 --
 data GraphMetadata = GraphMetadata { _gm_title    :: Text   -- title of the graph
                                    , _gm_corpusId :: [NodeId]  -- we can map with different corpus
                                    , _gm_legend   :: [LegendField] -- legend of the Graph
-                                   , _gm_listId :: ListId
+                                   , _gm_list     :: ListForGraph
                                    , _gm_version  :: Int
                                    }
   deriving (Show, Generic)

src/Gargantext/Viz/Graph/API.hs

@@ -98,12 +98,13 @@ getGraph uId nId = do
 computeGraph :: CorpusId -> NgramsType -> Int -> GargServer (Get '[JSON] Graph)
 computeGraph cId nt v = do
   lId  <- defaultList cId
+  v'   <- currentVersion
 
   let metadata = GraphMetadata "Title" [cId]
                                      [ LegendField 1 "#FFF" "Cluster"
                                      , LegendField 2 "#FFF" "Cluster"
                                      ]
-                                lId
+                                (ListForGraph lId v')
                                 v
                          -- (map (\n -> LegendField n "#FFFFFF" (pack $ show n)) [1..10])