1 files changed, 49 insertions, 0 deletions
diff --git a/fig-web/src/Fig/Web/Module/Gizmo.hs b/fig-web/src/Fig/Web/Module/Gizmo.hs
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+++ b/fig-web/src/Fig/Web/Module/Gizmo.hs
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+module Fig.Web.Module.Gizmo
+  ( public
+  , publicWebsockets
+  , publicBusEvents
+  ) where
+
+import Fig.Prelude
+
+import qualified Control.Concurrent.Chan as Chan
+
+import qualified Data.Text as Text
+
+import qualified Network.WebSockets as WS
+
+import Fig.Web.Utils
+import Fig.Web.Types
+import qualified Fig.Web.DB as DB
+
+public :: Module
+public a = do
+  onGet "/api/gizmo" do
+    buf <- queryParam "buf"
+    DB.hget a.db "gizmos" buf >>= \case
+      Nothing -> do
+        status status404
+        respondText "gizmo does not exist"
+      Just html -> respondHTML $ decodeUtf8 html
+  onGet "/api/gizmo/list" do
+    gizmos <- maybe [] (fmap decodeUtf8) <$> DB.hkeys a.db "gizmos"
+    respondText $ Text.unlines gizmos
+
+publicWebsockets :: Websockets
+publicWebsockets a =
+  [ ( "/api/gizmo/events", \conn -> do
+        c <- Chan.dupChan a.channels.gizmo
+        forever do
+          ev <- liftIO $ Chan.readChan c
+          WS.sendTextData conn ev
+    )
+  ]
+
+publicBusEvents :: BusEvents
+publicBusEvents a =
+  [ ("gizmo buffer update", \d -> do
+        let dstr = decodeUtf8 d
+        let updates = Text.splitOn " " dstr
+        forM_ updates $ Chan.writeChan a.channels.gizmo
+    )
+  ]