only poll tree if websocket connection is unavailable

commafeed-client/src/app/slices/server.ts

@@ -1,18 +1,25 @@
-import { createAsyncThunk, createSlice } from "@reduxjs/toolkit"
+import { PayloadAction, createAsyncThunk, createSlice } from "@reduxjs/toolkit"
 import { client } from "app/client"
 import { ServerInfo } from "app/types"
 
 interface ServerState {
     serverInfos?: ServerInfo
+    webSocketConnected: boolean
 }
 
-const initialState: ServerState = {}
+const initialState: ServerState = {
+    webSocketConnected: false,
+}
 
 export const reloadServerInfos = createAsyncThunk("server/infos", () => client.server.getServerInfos().then(r => r.data))
 export const serverSlice = createSlice({
     name: "server",
     initialState,
-    reducers: {},
+    reducers: {
+        setWebSocketConnected: (state, action: PayloadAction<boolean>) => {
+            state.webSocketConnected = action.payload
+        },
+    },
     extraReducers: builder => {
         builder.addCase(reloadServerInfos.fulfilled, (state, action) => {
             state.serverInfos = action.payload
@@ -20,4 +27,5 @@ export const serverSlice = createSlice({
     },
 })
 
+export const { setWebSocketConnected } = serverSlice.actions
 export default serverSlice.reducer