Reset hook to clear internal state and go back to a first loaded state

src/lib/hooks.js

@@ -151,6 +151,10 @@ const api = {
 		store.setState({ minimized: false });
 		parentCall('openWidget');
 	},
+
+	reset() {
+		store.resetState();
+	}
 };
 
 const onNewMessage = (event) => {

src/store/Store.js

@@ -1,6 +1,8 @@
+import { route } from 'preact-router';
 import mitt from 'mitt';
-
 import { parentCall } from '../lib/parentCall';
+import { loadConfig } from '../lib/main';
+import queryString from 'query-string';
 
 const { localStorage, sessionStorage } = window;
 
@@ -14,14 +16,18 @@ export default class Store {
 		let storedState;
 
 		try {
-			storedState = JSON.parse(localStorage.getItem(this.localStorageKey));
+			const reset = queryString.parse(window.location.search).reset === 'true';
+			if (!reset) {
+				storedState = JSON.parse(localStorage.getItem(this.localStorageKey));
+			}
 		} catch (e) {
 			storedState = {};
 		} finally {
 			storedState = typeof storedState === 'object' ? storedState : {};
 		}
 
-		this._state = { ...initialState, ...storedState };
+		this._initialState = initialState;
+ 		this._state = { ...initialState, ...storedState };
 
 		window.addEventListener('storage', (e) => {
 			// Cross-tab communication
@@ -47,7 +53,7 @@ export default class Store {
 		});
 
 		window.addEventListener('visibilitychange', () => {
-			!this._state.minimized && !this._state.triggered && parentCall('openWidget');
+			!this._state.minimized && parentCall('openWidget');
 			this._state.iframe.visible ? parentCall('showWidget') : parentCall('hideWidget');
 		});
 
@@ -87,4 +93,11 @@ export default class Store {
 		this._state = { ...storedState, ...nonPeristable };
 		this.emit('change', [this._state, prevState]);
 	}
+
+	resetState() {
+		window.addEventListener('beforeunload', () => {
+			localStorage.removeItem(this.localStorageKey);
+		});
+		document.location.href = document.location.href;
+	}
 }

src/widget.js

@@ -310,6 +310,10 @@ function minimizeWidget() {
 	callHook('minimizeWidget');
 }
 
+function reset() {
+	callHook('reset');
+}
+
 function initialize(params) {
 	for (const method in params) {
 		if (!params.hasOwnProperty(method)) {
@@ -439,6 +443,7 @@ window.RocketChat.livechat = {
 	hideWidget,
 	maximizeWidget,
 	minimizeWidget,
+	reset,
 
 	// callbacks
 	onChatMaximized(fn) { registerCallback('chat-maximized', fn); },