Store the last tab in a cookie so the server can use it for embedding state

client/package.json

@@ -44,6 +44,7 @@
     "fontfaceobserver": "^2.0.9",
     "history": "4.5.1",
     "immutable": "^3.8.1",
+    "js-cookie": "^2.1.4",
     "lodash": "^4.17.4",
     "react": "^15.4.2",
     "react-dom": "^15.4.2",

client/src/js/modules/initialState.js

@@ -1,3 +1,4 @@
+import Cookie from 'js-cookie';
 import { setEnvironment } from '../actions/environment';
 import { addMessages } from '../actions/message';
 import { select, updateSelection } from '../actions/tab';
@@ -17,12 +18,12 @@ export default function initialState({ store }) {
     });
 
     if (!store.getState().router.route) {
-      let tab = localStorage.tab;
+      const tab = Cookie.get('tab');
       if (tab) {
-        tab = JSON.parse(tab);
+        const [server, name = null] = tab.split(':');
 
-        if (find(env.servers, server => server.host === tab.server)) {
-          store.dispatch(select(tab.server, tab.name, true));
+        if (find(env.servers, srv => srv.host === server)) {
+          store.dispatch(select(server, name, true));
         } else {
           store.dispatch(updateSelection());
         }

client/src/js/modules/storage.js

@@ -1,10 +1,11 @@
+import Cookie from 'js-cookie';
 import debounce from 'lodash/debounce';
 import observe from '../util/observe';
 import { getSelectedTab } from '../reducers/tab';
 
-const saveTab = debounce(tab => {
-  localStorage.tab = JSON.stringify(tab);
-}, 3000);
+const saveTab = debounce(tab =>
+  Cookie.set('tab', tab.toString(), { expires: 30 })
+, 3000);
 
 export default function storage({ store }) {
   observe(store, getSelectedTab, tab => {

client/src/js/reducers/tab.js

@@ -12,6 +12,14 @@ class Tab extends TabRecord {
   isChannel() {
     return this.name && this.name.charAt(0) === '#';
   }
+
+  toString() {
+    let str = this.server;
+    if (this.name) {
+      str += `:${this.name}`;
+    }
+    return str;
+  }
 }
 
 const State = Record({

client/yarn.lock

@@ -3462,6 +3462,10 @@ js-base64@^2.1.9:
   version "2.1.9"
   resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-2.1.9.tgz#f0e80ae039a4bd654b5f281fc93f04a914a7fcce"
 
+js-cookie@^2.1.4:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/js-cookie/-/js-cookie-2.1.4.tgz#da4ec503866f149d164cf25f579ef31015025d8d"
+
 js-tokens@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.1.tgz#08e9f132484a2c45a30907e9dc4d5567b7f114d7"

server/index_data.go

@@ -29,6 +29,32 @@ type indexData struct {
 	Messages *Messages `json:"messages,omitempty"`
 }
 
+func (d *indexData) addUsersAndMessages(server, channel string, session *Session) {
+	users := channelStore.GetUsers(server, channel)
+	if len(users) > 0 {
+		d.Users = &Userlist{
+			Server:  server,
+			Channel: channel,
+			Users:   users,
+		}
+	}
+
+	messages, hasMore, err := session.user.GetLastMessages(server, channel, 50)
+	if err == nil && len(messages) > 0 {
+		m := Messages{
+			Server:   server,
+			To:       channel,
+			Messages: messages,
+		}
+
+		if hasMore {
+			m.Next = messages[0].ID
+		}
+
+		d.Messages = &m
+	}
+}
+
 func getIndexData(r *http.Request, session *Session) *indexData {
 	servers := session.user.GetServers()
 	connections := session.getConnectionStates()
@@ -60,30 +86,32 @@ func getIndexData(r *http.Request, session *Session) *indexData {
 
 	params := strings.Split(strings.Trim(r.URL.Path, "/"), "/")
 	if len(params) == 2 && isChannel(params[1]) {
-		users := channelStore.GetUsers(params[0], params[1])
-		if len(users) > 0 {
-			data.Users = &Userlist{
-				Server:  params[0],
-				Channel: params[1],
-				Users:   users,
+		data.addUsersAndMessages(params[0], params[1], session)
+	} else {
+		server, channel := parseTabCookie(r, r.URL.Path)
+		if channel != "" {
+			for _, ch := range channels {
+				if server == ch.Server && channel == ch.Name {
+					data.addUsersAndMessages(server, channel, session)
+					break
+				}
 			}
 		}
-
-		messages, hasMore, err := session.user.GetLastMessages(params[0], params[1], 50)
-		if err == nil && len(messages) > 0 {
-			m := Messages{
-				Server:   params[0],
-				To:       params[1],
-				Messages: messages,
-			}
-
-			if hasMore {
-				m.Next = messages[0].ID
-			}
-
-			data.Messages = &m
-		}
 	}
 
 	return &data
 }
+
+func parseTabCookie(r *http.Request, path string) (string, string) {
+	if path == "/" {
+		cookie, err := r.Cookie("tab")
+		if err == nil {
+			tab := strings.Split(cookie.Value, ":")
+
+			if len(tab) == 2 && isChannel(tab[1]) {
+				return tab[0], tab[1]
+			}
+		}
+	}
+	return "", ""
+}

server/websocket_handler.go

@@ -66,10 +66,13 @@ func (h *wsHandler) init(r *http.Request) {
 		h.session.numWS(), "WebSocket connections")
 
 	channels := h.session.user.GetChannels()
-	params := strings.Split(strings.Trim(r.URL.Query().Get("path"), "/"), "/")
+	path := r.URL.Query().Get("path")
+	params := strings.Split(strings.Trim(path, "/"), "/")
+	tabServer, tabChannel := parseTabCookie(r, path)
 
 	for _, channel := range channels {
-		if len(params) > 1 && channel.Server == params[0] && channel.Name == params[1] {
+		if (len(params) == 2 && channel.Server == params[0] && channel.Name == params[1]) ||
+			(channel.Server == tabServer && channel.Name == tabChannel) {
 			continue
 		}