Demo Mode (#117)

* Adding Demo Mode to Fredy

conf/config.json

@@ -1 +1 @@
-{"interval":"60","port":9998,"scrapingAnt":{"apiKey":"","proxy":"datacenter"},"workingHours":{"from":"","to":""},"demoMode":false,"analyticsEnabled":null}
+{"interval":"60","port":9998,"scrapingAnt":{"apiKey":"d","proxy":"datacenter"},"workingHours":{"from":"","to":""},"demoMode":false,"analyticsEnabled":null}

index.js

@@ -1,5 +1,5 @@
 import fs from 'fs';
-import { config } from './lib/utils.js';
+import {config} from './lib/utils.js';
 import * as similarityCache from './lib/services/similarity-check/similarityCache.js';
 import { setLastJobExecution } from './lib/services/storage/listingsStorage.js';
 import * as jobStorage from './lib/services/storage/jobStorage.js';
@@ -7,6 +7,8 @@ import FredyRuntime from './lib/FredyRuntime.js';
 import { duringWorkingHoursOrNotSet } from './lib/utils.js';
 import './lib/api/api.js';
 import {track} from './lib/services/tracking/Tracker.js';
+import {handleDemoUser} from './lib/services/storage/userStorage.js';
+import {cleanupDemoAtMidnight} from './lib/services/demoCleanup.js';
 //if db folder does not exist, ensure to create it before loading anything else
 if (!fs.existsSync('./db')) {
   fs.mkdirSync('./db');
@@ -17,35 +19,43 @@ const provider = fs.readdirSync(path).filter((file) => file.endsWith('.js'));
 const INTERVAL = config.interval * 60 * 1000;
 /* eslint-disable no-console */
 console.log(`Started Fredy successfully. Ui can be accessed via http://localhost:${config.port}`);
+if(config.demoMode){
+    console.info('Running in demo mode');
+    cleanupDemoAtMidnight();
+}
 /* eslint-enable no-console */
 const fetchedProvider = await Promise.all(
   provider.filter((provider) => provider.endsWith('.js')).map(async (pro) => import(`${path}/${pro}`))
 );
 
+handleDemoUser();
+
 setInterval(
   (function exec() {
     const isDuringWorkingHoursOrNotSet = duringWorkingHoursOrNotSet(config, Date.now());
-    if (isDuringWorkingHoursOrNotSet) {
-      track();
-      config.lastRun = Date.now();
-      jobStorage
-        .getJobs()
-        .filter((job) => job.enabled)
-        .forEach((job) => {
-          job.provider
-            .filter((p) => fetchedProvider.find((fp) => fp.metaInformation.id === p.id) != null)
-            .forEach(async (prov) => {
-              const pro = fetchedProvider.find((fp) => fp.metaInformation.id === prov.id);
-              pro.init(prov, job.blacklist);
-              await new FredyRuntime(pro.config, job.notificationAdapter, prov.id, job.id, similarityCache).execute();
-              setLastJobExecution(job.id);
-            });
-        });
-    } else {
-      /* eslint-disable no-console */
-      console.debug('Working hours set. Skipping as outside of working hours.');
-      /* eslint-enable no-console */
-    }
+        if(!config.demoMode) {
+            if (isDuringWorkingHoursOrNotSet) {
+                track();
+                config.lastRun = Date.now();
+                jobStorage
+                    .getJobs()
+                    .filter((job) => job.enabled)
+                    .forEach((job) => {
+                        job.provider
+                            .filter((p) => fetchedProvider.find((fp) => fp.metaInformation.id === p.id) != null)
+                            .forEach(async (prov) => {
+                                const pro = fetchedProvider.find((fp) => fp.metaInformation.id === prov.id);
+                                pro.init(prov, job.blacklist);
+                                await new FredyRuntime(pro.config, job.notificationAdapter, prov.id, job.id, similarityCache).execute();
+                                setLastJobExecution(job.id);
+                            });
+                    });
+            } else {
+                /* eslint-disable no-console */
+                console.debug('Working hours set. Skipping as outside of working hours.');
+                /* eslint-enable no-console */
+            }
+        }
     return exec;
   })(),
   INTERVAL

lib/api/api.js

@@ -12,6 +12,7 @@ import restana from 'restana';
 import files from 'serve-static';
 import path from 'path';
 import { getDirName } from '../utils.js';
+import {demoRouter} from './routes/demoRouter.js';
 const service = restana();
 const staticService = files(path.join(getDirName(), '../ui/public'));
 const PORT = config.port || 9998;
@@ -30,6 +31,9 @@ service.use('/api/jobs/insights', analyticsRouter);
 service.use('/api/admin/users', userRouter);
 service.use('/api/jobs', jobRouter);
 service.use('/api/login', loginRouter);
+//this route is unsecured intentionally as it is being queried from the login page
+service.use('/api/demo', demoRouter);
+
 /* eslint-disable no-console */
 service.start(PORT).then(() => {
   console.info(`Started API service on port ${PORT}`);

lib/api/routes/demoRouter.js

@@ -0,0 +1,11 @@
+import restana from 'restana';
+import {config} from '../../utils.js';
+const service = restana();
+const demoRouter = service.newRouter();
+
+demoRouter.get('/', async (req, res) => {
+  res.body = Object.assign({}, {demoMode: config.demoMode});
+  res.send();
+});
+
+export { demoRouter };

lib/api/routes/generalSettingsRoute.js

@@ -1,6 +1,7 @@
 import restana from 'restana';
 import {config, getDirName, readConfigFromStorage, refreshConfig} from '../../utils.js';
 import fs from 'fs';
+import {handleDemoUser} from '../../services/storage/userStorage.js';
 const service = restana();
 const generalSettingsRouter = service.newRouter();
 generalSettingsRouter.get('/', async (req, res) => {
@@ -10,9 +11,14 @@ generalSettingsRouter.get('/', async (req, res) => {
 generalSettingsRouter.post('/', async (req, res) => {
   const settings = req.body;
   try {
+    if(config.demoMode){
+      res.send(new Error('In demo mode, it is not allowed to change these settings.'));
+      return;
+    }
     const currentConfig = await readConfigFromStorage();
     fs.writeFileSync(`${getDirName()}/../conf/config.json`, JSON.stringify({...currentConfig, ...settings}));
     await refreshConfig();
+    handleDemoUser();
   } catch (err) {
     console.error(err);
     res.send(new Error('Error while trying to write settings.'));

lib/api/routes/jobRouter.js

@@ -6,6 +6,7 @@ import * as immoscoutProvider from '../../provider/immoscout.js';
 import { config } from '../../utils.js';
 import { isAdmin } from '../security.js';
 import {isScrapingAntApiKeySet} from '../../services/scrapingAnt.js';
+import {trackDemoJobCreated} from '../../services/tracking/Tracker.js';
 const service = restana();
 const jobRouter = service.newRouter();
 function doesJobBelongsToUser(job, req) {
@@ -68,6 +69,11 @@ jobRouter.post('/', async (req, res) => {
     res.send(new Error(error));
     console.error(error);
   }
+  trackDemoJobCreated({
+    name,
+    provider,
+    adapter: notificationAdapter
+  });
   res.send();
 });
 jobRouter.delete('', async (req, res) => {

lib/api/routes/loginRoute.js

@@ -1,6 +1,8 @@
 import restana from 'restana';
 import * as userStorage from '../../services/storage/userStorage.js';
 import * as hasher from '../../services/security/hash.js';
+import {config} from '../../utils.js';
+import {trackDemoAccessed} from '../../services/tracking/Tracker.js';
 const service = restana();
 const loginRouter = service.newRouter();
 loginRouter.get('/user', async (req, res) => {
@@ -24,6 +26,11 @@ loginRouter.post('/', async (req, res) => {
     return;
   }
   if (user.password === hasher.hash(password)) {
+
+    if(config.demoMode){
+      trackDemoAccessed();
+    }
+
     req.session.currentUser = user.id;
     userStorage.setLastLoginToNow({ userId: user.id });
     res.send(200);

lib/api/routes/userRoute.js

@@ -1,6 +1,7 @@
 import restana from 'restana';
 import * as userStorage from '../../services/storage/userStorage.js';
 import * as jobStorage from '../../services/storage/jobStorage.js';
+import {config} from '../../utils.js';
 const service = restana();
 const userRouter = service.newRouter();
 function checkIfAnyAdminAfterRemovingUser(userIdToBeRemoved, allUser) {
@@ -20,6 +21,11 @@ userRouter.get('/:userId', async (req, res) => {
   res.send();
 });
 userRouter.delete('/', async (req, res) => {
+  if(config.demoMode){
+    res.send(new Error('In demo mode, it is not allowed to remove user.'));
+    return;
+  }
+
   const { userId } = req.body;
   const allUser = userStorage.getUsers(false);
   if (!checkIfAnyAdminAfterRemovingUser(userId, allUser)) {
@@ -36,6 +42,12 @@ userRouter.delete('/', async (req, res) => {
   res.send();
 });
 userRouter.post('/', async (req, res) => {
+
+  if(config.demoMode){
+      res.send(new Error('In demo mode, it is not allowed to change or add user.'));
+      return;
+  }
+
   const { username, password, password2, isAdmin, userId } = req.body;
   if (password !== password2) {
     res.send(new Error('Passwords does not match'));

lib/services/demoCleanup.js

@@ -0,0 +1,29 @@
+import { setInterval } from 'node:timers';
+import {removeJobsByUserName} from './storage/jobStorage.js';
+import {config} from '../utils.js';
+
+/**
+ * if we are running in demo environment, we have to cleanup the db files (specifically the jobs table)
+ */
+export function cleanupDemoAtMidnight() {
+    const now = new Date();
+    const millisUntilMidnightUTC = (24 - now.getUTCHours()) * 60 * 60 * 1000
+        - now.getUTCMinutes() * 60 * 1000
+        - now.getUTCSeconds() * 1000
+        - now.getUTCMilliseconds();
+
+    setTimeout(() => {
+        cleanup();
+
+        setInterval(() => {
+            cleanup();
+        }, 24 * 60 * 60 * 1000);
+
+    }, millisUntilMidnightUTC);
+}
+
+function cleanup(){
+    if(config.demoMode){
+        removeJobsByUserName('demo');
+    }
+}

lib/services/storage/jobStorage.js

@@ -77,6 +77,17 @@ export const removeJobsByUserId = (userId) => {
     .value();
   db.write();
 };
+export const removeJobsByUserName = (userName) => {
+  db.chain
+      .get('jobs')
+      .filter((job) => job.username === userName)
+      .forEach((job) => listingStorage.removeListings(job.id));
+  db.chain
+      .get('jobs')
+      .remove((job) => job.username === userName)
+      .value();
+  db.write();
+};
 export const getJobs = () => {
   return db.chain
     .get('jobs')

lib/services/storage/userStorage.js

@@ -1,5 +1,5 @@
 import { JSONFileSync } from 'lowdb/node';
-import { getDirName } from '../../utils.js';
+import {config, getDirName} from '../../utils.js';
 import * as hasher from '../security/hash.js';
 import { nanoid } from 'nanoid';
 import * as jobStorage from './jobStorage.js';
@@ -16,6 +16,13 @@ const defaultData = {
             password: hasher.hash('admin'),
             isAdmin: true,
         },
+        {
+            id: nanoid(),
+            lastLogin: Date.now(),
+            username: 'demo',
+            password: hasher.hash('demo'),
+            isAdmin: true,
+        },
     ],
 };
 
@@ -84,3 +91,29 @@ export const removeUser = (userId) => {
     .value();
   db.write();
 };
+
+export const handleDemoUser = () => {
+    if(!config.demoMode){
+        const user = db.chain.get('user').value();
+        db.chain.get('user').value();
+        db.chain.set('user', user.filter((u) => u.username !== 'demo')).value();
+        db.write();
+    }else {
+        const demoUser = db.chain
+            .get('user')
+            .filter((u) => u.username === 'demo')
+            .value();
+        if (demoUser == null || demoUser.length === 0) {
+            db.chain.get('user')
+                .value()
+                .push({
+                    id: nanoid(),
+                    username: 'demo',
+                    password: hasher.hash('demo'),
+                    isAdmin: true,
+                });
+            db.write();
+        }
+    }
+};
+

lib/services/tracking/Tracker.js

@@ -1,20 +1,16 @@
 import Mixpanel from 'mixpanel';
 import {getJobs} from '../storage/jobStorage.js';
 
-import {config} from '../../utils.js';
+import {config, inDevMode} from '../../utils.js';
+
+const mixpanelTracker = Mixpanel.init('718670ef1c58c0208256c1e408a3d75e');
 
 export const track = function () {
     //only send tracking information if the user allowed to do so.
-    if (config.analyticsEnabled) {
-
-        const mixpanelTracker = Mixpanel.init('718670ef1c58c0208256c1e408a3d75e');
+    if (config.analyticsEnabled && !inDevMode()) {
 
         const activeProvider = new Set();
         const activeAdapter = new Set();
-        const platform = process.platform;
-        const arch = process.arch;
-        const language = process.env.LANG || 'en';
-        const nodeVersion = process.version || 'N/A';
 
         const jobs = getJobs();
 
@@ -28,15 +24,45 @@ export const track = function () {
                 });
             });
 
-            mixpanelTracker.track('fredy_tracking', {
+            mixpanelTracker.track('fredy_tracking', enrichTrackingObject({
                 adapter: Array.from(activeAdapter),
                 provider: Array.from(activeProvider),
-                isDemo: config.demoMode,
-                platform,
-                arch,
-                nodeVersion,
-                language
-            });
+            }));
         }
     }
-};
+};
+
+/**
+ * Note, this will only be used when Fredy runs in demo mode
+ */
+export function trackDemoJobCreated(jobData) {
+    if (config.analyticsEnabled && !inDevMode() && config.demoMode) {
+        mixpanelTracker.track('demoJobCreated', enrichTrackingObject(jobData));
+    }
+}
+
+/**
+ * Note, this will only be used when Fredy runs in demo mode
+ */
+export function trackDemoAccessed() {
+    if (config.analyticsEnabled && !inDevMode() && config.demoMode) {
+        mixpanelTracker.track('demoAccessed', enrichTrackingObject({}));
+    }
+}
+
+
+function enrichTrackingObject(trackingObject) {
+    const platform = process.platform;
+    const arch = process.arch;
+    const language = process.env.LANG || 'en';
+    const nodeVersion = process.version || 'N/A';
+
+    return {
+        ...trackingObject,
+        isDemo: config.demoMode,
+        platform,
+        arch,
+        nodeVersion,
+        language
+    };
+}

lib/utils.js

@@ -4,6 +4,10 @@ import {readFile} from 'fs/promises';
 import {createHash} from 'crypto';
 import {DEFAULT_CONFIG} from './defaultConfig.js';
 
+function inDevMode(){
+    return process.env.NODE_ENV == null || process.env.NODE_ENV !== 'production';
+}
+
 function isOneOf(word, arr) {
     if (arr == null || arr.length === 0) {
         return false;
@@ -72,6 +76,7 @@ export async function refreshConfig(){
 await refreshConfig();
 
 export {isOneOf};
+export {inDevMode};
 export {nullOrEmpty};
 export {duringWorkingHoursOrNotSet};
 export {getDirName};

package.json

@@ -3,7 +3,7 @@
   "version": "10.3.0",
   "description": "[F]ind [R]eal [E]states [d]amn eas[y].",
   "scripts": {
-    "start": "node index.js",
+    "start": "node prod.js",
     "dev": "yarn && rm -rf ./ui/public/* && vite",
     "ui": "rm -rf ./ui/public/* && vite",
     "prod": "yarn && vite build --emptyOutDir",

prod.js

@@ -0,0 +1,2 @@
+process.env.NODE_ENV = 'production';
+import('./index.js');

ui/src/App.jsx

@@ -1,4 +1,4 @@
-import React, { useEffect } from 'react';
+import React, {useEffect} from 'react';
 
 import InsufficientPermission from './components/permission/InsufficientPermission';
 import PermissionAwareRoute from './components/permission/PermissionAwareRoute';
@@ -6,94 +6,106 @@ import GeneralSettings from './views/generalSettings/GeneralSettings';
 import JobMutation from './views/jobs/mutation/JobMutation';
 import UserMutator from './views/user/mutation/UserMutator';
 import JobInsight from './views/jobs/insights/JobInsight.jsx';
-import { useDispatch, useSelector } from 'react-redux';
-import { Switch, Redirect } from 'react-router-dom';
+import {useDispatch, useSelector} from 'react-redux';
+import {Switch, Redirect} from 'react-router-dom';
 import Logout from './components/logout/Logout';
 import Logo from './components/logo/Logo';
 import Menu from './components/menu/Menu';
 import Login from './views/login/Login';
 import Users from './views/user/Users';
 import Jobs from './views/jobs/Jobs';
-import { Route } from 'react-router';
+import {Route} from 'react-router';
 
 import './App.less';
 import TrackingModal from './components/tracking/TrackingModal.jsx';
+import {Banner} from '@douyinfe/semi-ui';
 
 export default function FredyApp() {
-  const dispatch = useDispatch();
-  const [loading, setLoading] = React.useState(true);
-  const currentUser = useSelector((state) => state.user.currentUser);
-  const settings = useSelector((state) => state.generalSettings.settings);
+    const dispatch = useDispatch();
+    const [loading, setLoading] = React.useState(true);
+    const currentUser = useSelector((state) => state.user.currentUser);
+    const settings = useSelector((state) => state.generalSettings.settings);
 
-  useEffect(() => {
-    async function init() {
-      await dispatch.user.getCurrentUser();
-      if (!needsLogin()) {
-        await dispatch.provider.getProvider();
-        await dispatch.jobs.getJobs();
-        await dispatch.jobs.getProcessingTimes();
-        await dispatch.notificationAdapter.getAdapter();
-        await dispatch.generalSettings.getGeneralSettings();
-      }
-      setLoading(false);
-    }
+    useEffect(() => {
+        async function init() {
+            await dispatch.user.getCurrentUser();
+            if (!needsLogin()) {
+                await dispatch.provider.getProvider();
+                await dispatch.jobs.getJobs();
+                await dispatch.jobs.getProcessingTimes();
+                await dispatch.notificationAdapter.getAdapter();
+                await dispatch.generalSettings.getGeneralSettings();
+            }
+            setLoading(false);
+        }
 
-    init();
-  }, [currentUser?.userId]);
+        init();
+    }, [currentUser?.userId]);
 
-  const needsLogin = () => {
-    return currentUser == null || Object.keys(currentUser).length === 0;
-  };
+    const needsLogin = () => {
+        return currentUser == null || Object.keys(currentUser).length === 0;
+    };
 
-  const isAdmin = () => currentUser != null && currentUser.isAdmin;
+    const isAdmin = () => currentUser != null && currentUser.isAdmin;
 
-  const login = () => (
-    <Switch>
-      <Route name="Login" path={'/login'} component={Login} />
-      <Redirect from="*" to={'/login'} />
-    </Switch>
-  );
-
-  return loading ? null : needsLogin() ? (
-    login()
-  ) : (
-    <div className="app">
-      <div className="app__container">
-        <Logout />
-        <Logo width={190} white />
-        <Menu isAdmin={isAdmin()} />
-        {settings.analyticsEnabled === null && <TrackingModal/>}
+    const login = () => (
         <Switch>
-          <Route name="Insufficient Permission" path={'/403'} component={InsufficientPermission} />
-          <Route name="Create new Job" path={'/jobs/new'} component={JobMutation} />
-          <Route name="Edit a Job" path={'/jobs/edit/:jobId'} component={JobMutation} />
-          <Route name="Insights into a Job" path={'/jobs/insights/:jobId'} component={JobInsight} />
-          <Route name="Job overview" path={'/jobs'} component={Jobs} />
-          <PermissionAwareRoute
-            name="Create new User"
-            path="/users/new"
-            component={<UserMutator />}
-            currentUser={currentUser}
-          />
-          <PermissionAwareRoute
-            name="Edit a user"
-            path="/users/edit/:userId"
-            component={<UserMutator />}
-            currentUser={currentUser}
-          />
-          <PermissionAwareRoute name="Users" path="/users" component={<Users />} currentUser={currentUser} />
-          <PermissionAwareRoute
-            name="General Settings"
-            path="/generalSettings"
-            component={<GeneralSettings />}
-            currentUser={currentUser}
-          />
-
-          <Redirect from="/" to={'/jobs'} />
+            <Route name="Login" path={'/login'} component={Login}/>
+            <Redirect from="*" to={'/login'}/>
         </Switch>
-      </div>
-    </div>
-  );
+    );
+
+    return loading ? null : needsLogin() ? (
+        login()
+    ) : (
+        <div className="app">
+            <div className="app__container">
+                <Logout/>
+                <Logo width={190} white/>
+                <Menu isAdmin={isAdmin()}/>
+
+                {settings.demoMode && (
+                <>
+                    <Banner fullMode={true}
+                            type="info"
+                            bordered
+                            closeIcon={null}
+                            description="You're currently viewing the demo version of Fredy. Jobs won't scrape websites, and any changes you make will be reverted at midnight."
+                    />
+                    <br/>
+                </>)}
+                {(settings.analyticsEnabled === null && !settings.demoMode) && <TrackingModal/>}
+                <Switch>
+                    <Route name="Insufficient Permission" path={'/403'} component={InsufficientPermission}/>
+                    <Route name="Create new Job" path={'/jobs/new'} component={JobMutation}/>
+                    <Route name="Edit a Job" path={'/jobs/edit/:jobId'} component={JobMutation}/>
+                    <Route name="Insights into a Job" path={'/jobs/insights/:jobId'} component={JobInsight}/>
+                    <Route name="Job overview" path={'/jobs'} component={Jobs}/>
+                    <PermissionAwareRoute
+                        name="Create new User"
+                        path="/users/new"
+                        component={<UserMutator/>}
+                        currentUser={currentUser}
+                    />
+                    <PermissionAwareRoute
+                        name="Edit a user"
+                        path="/users/edit/:userId"
+                        component={<UserMutator/>}
+                        currentUser={currentUser}
+                    />
+                    <PermissionAwareRoute name="Users" path="/users" component={<Users/>} currentUser={currentUser}/>
+                    <PermissionAwareRoute
+                        name="General Settings"
+                        path="/generalSettings"
+                        component={<GeneralSettings/>}
+                        currentUser={currentUser}
+                    />
+
+                    <Redirect from="/" to={'/jobs'}/>
+                </Switch>
+            </div>
+        </div>
+    );
 }
 
 FredyApp.displayName = 'FredyApp';

ui/src/services/rematch/models/demoMode.js

@@ -0,0 +1,24 @@
+import { xhrGet } from '../../xhr';
+export const demoMode = {
+  state: {
+    demoMode: false,
+  },
+  reducers: {
+    setDemoMode: (state, payload) => {
+      return {
+        ...state,
+        demoMode: payload.demoMode,
+      };
+    },
+  },
+  effects: {
+    async getDemoMode() {
+      try {
+        const response = await xhrGet('/api/demo');
+        this.setDemoMode(response.json);
+      } catch (Exception) {
+        console.error('Error while trying to get resource for api/demo. Error:', Exception);
+      }
+    },
+  },
+};

ui/src/services/rematch/store.js

@@ -5,6 +5,7 @@ import { provider } from './models/provider';
 import { createLogger } from 'redux-logger';
 import { jobs } from './models/jobs';
 import { user } from './models/user';
+import { demoMode } from './models/demoMode.js';
 import { init } from '@rematch/core';
 const middleware = [];
 if (process.env.NODE_ENV === 'development') {
@@ -16,6 +17,7 @@ const store = init({
   models: {
     notificationAdapter,
     generalSettings,
+    demoMode,
     provider,
     jobs,
     user,

ui/src/views/generalSettings/GeneralSettings.jsx

@@ -109,10 +109,17 @@ const GeneralSettings = function GeneralSettings() {
             });
         } catch (exception) {
             console.error(exception);
-            throwMessage('Error while trying to store settings.', 'error');
+            if(exception?.json?.message != null){
+                throwMessage(exception.json.message, 'error');
+            }else {
+                throwMessage('Error while trying to store settings.', 'error');
+            }
             return;
         }
-        throwMessage('Settings stored successfully.', 'success');
+        throwMessage('Settings stored successfully. We will reload your browser in 3 seconds.', 'success');
+        setTimeout(()=>{
+            location.reload();
+        }, 3000);
     };
 
     return (
@@ -120,14 +127,6 @@ const GeneralSettings = function GeneralSettings() {
             {!loading && (
                 <React.Fragment>
                     <Headline text="General Settings"/>
-                    <Banner
-                        fullMode={false}
-                        type="info"
-                        closeIcon={null}
-                        title={<div style={{fontWeight: 600, fontSize: '14px', lineHeight: '20px'}}>Info</div>}
-                        style={{marginBottom: '1rem'}}
-                        description="If you change any settings, you must restart Fredy afterwards."
-                    />
                     <div>
                         <SegmentPart
                             name="Interval"

ui/src/views/login/Login.jsx

@@ -1,88 +1,102 @@
-import React from 'react';
+import React, {useEffect} from 'react';
 
 import cityBackground from '../../assets/city_background.jpg';
 import Logo from '../../components/logo/Logo';
-import { xhrPost } from '../../services/xhr';
-import { useHistory } from 'react-router';
-import { useDispatch } from 'react-redux';
-import { Input, Button, Banner } from '@douyinfe/semi-ui';
+import {xhrPost} from '../../services/xhr';
+import {useHistory} from 'react-router';
+import {useDispatch, useSelector} from 'react-redux';
+import {Input, Button, Banner} from '@douyinfe/semi-ui';
 
 import './login.less';
-import { IconUser, IconLock } from '@douyinfe/semi-icons';
+import {IconUser, IconLock} from '@douyinfe/semi-icons';
 
 export default function Login() {
-  const dispatch = useDispatch();
+    const dispatch = useDispatch();
+    const [username, setUserName] = React.useState('');
+    const [password, setPassword] = React.useState('');
+    const [error, setError] = React.useState(null);
+    const demoMode = useSelector((state) => state.demoMode.demoMode || false);
+    const history = useHistory();
 
-  const [username, setUserName] = React.useState('');
-  const [password, setPassword] = React.useState('');
-  const [error, setError] = React.useState(null);
+    useEffect(() => {
+        async function init() {
+            await dispatch.demoMode.getDemoMode();
+        }
 
-  const history = useHistory();
+        init();
+    }, []);
 
-  const tryLogin = async () => {
-    if (username.length === 0 || password.length === 0) {
-      setError('Username and password are mandatory.');
-      return;
-    }
-    try {
-      await xhrPost('/api/login', {
-        username,
-        password,
-      });
-      setError(null);
-    } catch (Exception) {
-      setError('Login not successful...');
-      return;
-    }
-    await dispatch.user.getCurrentUser();
-    history.push('/jobs');
-  };
+    const tryLogin = async () => {
+        if (username.length === 0 || password.length === 0) {
+            setError('Username and password are mandatory.');
+            return;
+        }
+        try {
+            await xhrPost('/api/login', {
+                username,
+                password,
+            });
+            setError(null);
+        } catch (Exception) {
+            setError('Login not successful...');
+            return;
+        }
+        await dispatch.user.getCurrentUser();
+        history.push('/jobs');
+    };
 
-  return (
-    <div className="login">
-      <div className="login__bgImage" style={{ background: `url("${cityBackground}")` }} />
-      <Logo />
-      <form>
-        <div className="login__loginWrapper">
-          {error && <Banner type="danger" closeIcon={null} description={error} />}
-          <Input
-            size="large"
-            prefix={<IconUser />}
-            placeholder="Username"
-            value={username}
-            showClear
-            style={{ marginTop: error ? '1rem' : '4rem' }}
-            autofocus
-            onChange={(value) => setUserName(value)}
-            onKeyPress={async (e) => {
-              if (e.key === 'Enter') {
-                await tryLogin();
-              }
-            }}
-          />
+    return (
+        <div className="login">
+            <div className="login__bgImage" style={{background: `url("${cityBackground}")`}}/>
+            <Logo/>
+            <form>
+                <div className="login__loginWrapper">
+                    {error && <Banner type="danger" closeIcon={null} description={error}/>}
+                    <Input
+                        size="large"
+                        prefix={<IconUser/>}
+                        placeholder="Username"
+                        value={username}
+                        showClear
+                        style={{marginTop: error ? '1rem' : '4rem'}}
+                        autoFocus
+                        onChange={(value) => setUserName(value)}
+                        onKeyPress={async (e) => {
+                            if (e.key === 'Enter') {
+                                await tryLogin();
+                            }
+                        }}
+                    />
 
-          <Input
-            size="large"
-            mode="password"
-            prefix={<IconLock />}
-            value={password}
-            placeholder="Password"
-            style={{ marginTop: '2rem' }}
-            onChange={(value) => setPassword(value)}
-            onKeyPress={async (e) => {
-              if (e.key === 'Enter') {
-                await tryLogin();
-              }
-            }}
-          />
+                    <Input
+                        size="large"
+                        mode="password"
+                        prefix={<IconLock/>}
+                        value={password}
+                        placeholder="Password"
+                        style={{marginTop: '2rem'}}
+                        onChange={(value) => setPassword(value)}
+                        onKeyPress={async (e) => {
+                            if (e.key === 'Enter') {
+                                await tryLogin();
+                            }
+                        }}
+                    />
 
-          <Button type="primary" onClick={tryLogin} theme="solid" style={{ marginTop: '3rem' }}>
-            Login
-          </Button>
+                    <Button type="primary" onClick={tryLogin} theme="solid" style={{marginTop: '3rem'}}>
+                        Login
+                    </Button>
+                    <br/>
+                    {demoMode && <Banner fullMode={true}
+                                         type="info"
+                                         bordered
+                                         closeIcon={null}
+                                         description="This is the demo version of Fredy. Use 'demo' as both the username and password to log in."
+                    />}
+                </div>
+            </form>
         </div>
-      </form>
-    </div>
-  );
+    );
 }
 
 Login.displayName = 'Login';