Merge pull request #21 from oslabs-beta/liz-chatbug

[Bug Fix] Clean Chat History When Leaving Collaboration Room

Author: johnwage

app/src/components/left/RoomsContainer.tsx

@@ -41,7 +41,8 @@ import {
   setUserJoined,
   setUserList,
   setMessages,
-  setPassword
+  setPassword,
+  setEmptyMessages
 } from '../../redux/reducers/slice/roomSlice';
 import { codePreviewCooperative } from '../../redux/reducers/slice/codePreviewSlice';
 import { cooperativeStyle } from '../../redux/reducers/slice/styleSlice';
@@ -342,6 +343,7 @@ const RoomsContainer = () => {
     dispatch(setUserJoined(false)); //false: join room UI appear
     dispatch(resetState(''));
     dispatch(setPassword(''));
+    dispatch(setEmptyMessages([]));
   };
 
   const checkInputField = (...inputs) => {

app/src/redux/reducers/slice/roomSlice.ts

@@ -28,6 +28,9 @@ const roomSlice = createSlice({
     setMessages: (state, action) => {
       state.messages = [...state.messages, action.payload];
     },
+    setEmptyMessages: (state, action) => {
+      state.messages = [];
+    },
     setPassword: (state, action) => {
       state.password = action.payload;
     }
@@ -40,6 +43,7 @@ export const {
   setUserList,
   setUserJoined,
   setMessages,
+  setEmptyMessages,
   setPassword
 } = roomSlice.actions;