Show banner on network lost

ui/src/CurrentUser.ts

@@ -15,6 +15,8 @@ export class CurrentUser {
     public authenticating = false;
     @observable
     public user: IUser = {name: 'unknown', admin: false, id: -1};
+    @observable
+    public hasNetwork = true;
 
     public constructor(private readonly snack: SnackReporter) {}
 
@@ -82,15 +84,18 @@ export class CurrentUser {
             .then((passThrough) => {
                 this.user = passThrough.data;
                 this.loggedIn = true;
+                this.hasNetwork = true;
                 return passThrough;
             })
             .catch((error: AxiosError) => {
-                if (
+                if (!error || !error.response) {
-                    error &&
+                    this.hasNetwork = false;
-                    error.response &&
+                    return Promise.reject(error);
-                    error.response.status >= 400 &&
+                }
-                    error.response.status < 500
+
-                ) {
+                this.hasNetwork = true;
+
+                if (error.response.status >= 400 && error.response.status < 500) {
                     this.logout();
                 }
                 return Promise.reject(error);

ui/src/common/NetworkLostBanner.tsx

@@ -0,0 +1,28 @@
+import React from 'react';
+import Button from '@material-ui/core/Button';
+import Typography from '@material-ui/core/Typography';
+
+interface NetworkLostBannerProps {
+    height: number;
+    retry: () => void;
+}
+
+export const NetworkLostBanner = ({height, retry}: NetworkLostBannerProps) => {
+    return (
+        <div
+            style={{
+                backgroundColor: '#e74c3c',
+                height,
+                width: '100%',
+                zIndex: 1300,
+                position: 'relative',
+            }}>
+            <Typography align="center" variant="title" style={{lineHeight: `${height}px`}}>
+                No network connection.{' '}
+                <Button variant="outlined" onClick={retry}>
+                    Retry
+                </Button>
+            </Typography>
+        </div>
+    );
+};

ui/src/index.tsx

@@ -5,10 +5,8 @@ import {initAxios} from './apiAuth';
 import * as config from './config';
 import Layout from './layout/Layout';
 import registerServiceWorker from './registerServiceWorker';
-import * as Notifications from './snack/browserNotification';
 import {CurrentUser} from './CurrentUser';
 import {AppStore} from './application/AppStore';
-import {reaction} from 'mobx';
 import {WebSocketStore} from './message/WebSocketStore';
 import {SnackManager} from './snack/SnackManager';
 import {InjectProvider, StoreMapping} from './inject';
@@ -16,6 +14,8 @@ import {UserStore} from './user/UserStore';
 import {MessagesStore} from './message/MessagesStore';
 import {ClientStore} from './client/ClientStore';
 import {PluginStore} from './plugin/PluginStore';
+import * as Notifications from './snack/browserNotification';
+import {registerReactions} from './reactions';
 
 const defaultDevConfig = {
     url: 'http://localhost:80/',
@@ -71,24 +71,7 @@ const initStores = (): StoreMapping => {
     const stores = initStores();
     initAxios(stores.currentUser, stores.snackManager.snack);
 
-    reaction(
+    registerReactions(stores);
-        () => stores.currentUser.loggedIn,
-        (loggedIn) => {
-            if (loggedIn) {
-                stores.wsStore.listen((message) => {
-                    stores.messagesStore.publishSingleMessage(message);
-                    Notifications.notifyNewMessage(message);
-                });
-                stores.appStore.refresh();
-            } else {
-                stores.messagesStore.clearAll();
-                stores.appStore.clear();
-                stores.clientStore.clear();
-                stores.userStore.clear();
-                stores.wsStore.close();
-            }
-        }
-    );
 
     stores.currentUser.tryAuthenticate().catch(() => {});
 

ui/src/layout/Header.tsx

@@ -11,7 +11,7 @@ import ExitToApp from '@material-ui/icons/ExitToApp';
 import Highlight from '@material-ui/icons/Highlight';
 import Apps from '@material-ui/icons/Apps';
 import SupervisorAccount from '@material-ui/icons/SupervisorAccount';
-import React, {Component} from 'react';
+import React, {Component, CSSProperties} from 'react';
 import {Link} from 'react-router-dom';
 import {observer} from 'mobx-react';
 
@@ -43,15 +43,16 @@ interface IProps {
     toggleTheme: VoidFunction;
     showSettings: VoidFunction;
     logout: VoidFunction;
+    style: CSSProperties;
 }
 
 @observer
 class Header extends Component<IProps & Styles> {
     public render() {
-        const {classes, version, name, loggedIn, admin, toggleTheme, logout} = this.props;
+        const {classes, version, name, loggedIn, admin, toggleTheme, logout, style} = this.props;
 
         return (
-            <AppBar position="absolute" className={classes.appBar}>
+            <AppBar position="absolute" style={style} className={classes.appBar}>
                 <Toolbar>
                     <div className={classes.title}>
                         <a href="https://github.com/gotify/server" className={classes.link}>

ui/src/layout/Layout.tsx

@@ -20,6 +20,7 @@ import Users from '../user/Users';
 import {observer} from 'mobx-react';
 import {observable} from 'mobx';
 import {inject, Stores} from '../inject';
+import {NetworkLostBanner} from '../common/NetworkLostBanner';
 
 const styles = (theme: Theme) => ({
     content: {
@@ -50,7 +51,9 @@ const isThemeKey = (value: string | null): value is ThemeKey => {
 };
 
 @observer
-class Layout extends React.Component<WithStyles<'content'> & Stores<'currentUser'>> {
+class Layout extends React.Component<
+    WithStyles<'content'> & Stores<'currentUser' | 'snackManager'>
+> {
     private static defaultVersion = '0.0.0';
 
     @observable
@@ -59,6 +62,8 @@ class Layout extends React.Component<WithStyles<'content'> & Stores<'currentUser
     private showSettings = false;
     @observable
     private version = Layout.defaultVersion;
+    @observable
+    private reconnecting = false;
 
     public componentDidMount() {
         if (this.version === Layout.defaultVersion) {
@@ -75,6 +80,19 @@ class Layout extends React.Component<WithStyles<'content'> & Stores<'currentUser
         }
     }
 
+    private doReconnect = () => {
+        this.reconnecting = true;
+        this.props.currentUser
+            .tryAuthenticate()
+            .then(() => {
+                this.reconnecting = false;
+            })
+            .catch(() => {
+                this.reconnecting = false;
+                this.props.snackManager.snack('Reconnect failed');
+            });
+    };
+
     public render() {
         const {version, showSettings, currentTheme} = this;
         const {
@@ -84,6 +102,7 @@ class Layout extends React.Component<WithStyles<'content'> & Stores<'currentUser
                 authenticating,
                 user: {name, admin},
                 logout,
+                hasNetwork,
             },
         } = this.props;
         const theme = themeMap[currentTheme];
@@ -91,9 +110,14 @@ class Layout extends React.Component<WithStyles<'content'> & Stores<'currentUser
         return (
             <MuiThemeProvider theme={theme}>
                 <HashRouter>
+                    <div>
+                        {hasNetwork ? null : (
+                            <NetworkLostBanner height={64} retry={this.doReconnect} />
+                        )}
                         <div style={{display: 'flex'}}>
                             <CssBaseline />
                             <Header
+                                style={{top: hasNetwork ? 0 : 64}}
                                 admin={admin}
                                 name={name}
                                 version={version}
@@ -106,7 +130,7 @@ class Layout extends React.Component<WithStyles<'content'> & Stores<'currentUser
 
                             <main className={classes.content}>
                                 <Switch>
-                                {authenticating ? (
+                                    {authenticating || this.reconnecting ? (
                                         <Route path="/">
                                             <LoadingSpinner />
                                         </Route>
@@ -128,6 +152,7 @@ class Layout extends React.Component<WithStyles<'content'> & Stores<'currentUser
                             <ScrollUpButton />
                             <SnackBarHandler />
                         </div>
+                    </div>
                 </HashRouter>
             </MuiThemeProvider>
         );
@@ -139,4 +164,6 @@ class Layout extends React.Component<WithStyles<'content'> & Stores<'currentUser
     }
 }
 
-export default withStyles(styles, {withTheme: true})<{}>(inject('currentUser')(Layout));
+export default withStyles(styles, {withTheme: true})<{}>(
+    inject('currentUser', 'snackManager')(Layout)
+);

ui/src/message/WebSocketStore.ts

@@ -42,8 +42,6 @@ export class WebSocketStore {
                 .catch((error: AxiosError) => {
                     if (error && error.response && error.response.status === 401) {
                         this.snack('Could not authenticate with client token, logging out.');
-                    } else {
-                        this.snack('Lost network connection, please refresh the page.');
                     }
                 });
         };

ui/src/reactions.ts

@@ -0,0 +1,41 @@
+import {StoreMapping} from './inject';
+import {reaction} from 'mobx';
+import * as Notifications from './snack/browserNotification';
+
+export const registerReactions = (stores: StoreMapping) => {
+    const clearAll = () => {
+        stores.messagesStore.clearAll();
+        stores.appStore.clear();
+        stores.clientStore.clear();
+        stores.userStore.clear();
+        stores.wsStore.close();
+    };
+    const loadAll = () => {
+        stores.wsStore.listen((message) => {
+            stores.messagesStore.publishSingleMessage(message);
+            Notifications.notifyNewMessage(message);
+        });
+        stores.appStore.refresh();
+    };
+
+    reaction(
+        () => stores.currentUser.loggedIn,
+        (loggedIn) => {
+            if (loggedIn) {
+                loadAll();
+            } else {
+                clearAll();
+            }
+        }
+    );
+
+    reaction(
+        () => stores.currentUser.hasNetwork,
+        (hasNetwork) => {
+            if (hasNetwork) {
+                clearAll();
+                loadAll();
+            }
+        }
+    );
+};

ui/src/user/Login.tsx

@@ -44,6 +44,7 @@ class Login extends Component<Stores<'currentUser'>> {
                                 size="large"
                                 className="login"
                                 color="primary"
+                                disabled={!this.props.currentUser.hasNetwork}
                                 style={{marginTop: 15, marginBottom: 5}}
                                 onClick={this.login}>
                                 Login