Add protocol to open conference links with the app

Co-authored-by: Christophe HAMERLING <chamerling@linagora.com>
Co-authored-by: Klemens Arro <klemens.arro@admcloudtech.com>
Co-authored-by: Goran Urukalo <goran.urukalo@teletrader.com>

8 files changed, 243 insertions, 33 deletions

diff --git a/README.md b/README.md
index 58ff8f3..9519763 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ Desktop application for [Jitsi Meet] built with [Electron].
 - Builtin auto-updates
 - Remote control
 - Always-On-Top window
+- Support for deeplinks such as `jitsi-meet://myroom` (will open `myroom` on the configured Jitsi instance) or `jitsi-meet://jitsi.mycompany.com/myroom` (will open `myroom` on the Jitsi instance running on `jitsi.mycompany.com`)
 
 ## Installation
 
diff --git a/app/features/app/components/App.js b/app/features/app/components/App.js
index b934ddf..c34bbbf 100644
--- a/app/features/app/components/App.js
+++ b/app/features/app/components/App.js
@@ -4,26 +4,84 @@ import { AtlasKitThemeProvider } from '@atlaskit/theme';
 
 import React, { Component } from 'react';
 import { Route, Switch } from 'react-router';
-import { ConnectedRouter as Router } from 'react-router-redux';
+import { connect } from 'react-redux';
+import { ConnectedRouter as Router, push } from 'react-router-redux';
 
 import { Conference } from '../../conference';
 import config from '../../config';
 import { history } from '../../router';
+import { createConferenceObjectFromURL } from '../../utils';
 import { Welcome } from '../../welcome';
 
 /**
  * Main component encapsulating the entire application.
  */
-export default class App extends Component<*> {
+class App extends Component<*> {
     /**
      * Initializes a new {@code App} instance.
      *
      * @inheritdoc
      */
-    constructor() {
-        super();
+    constructor(props) {
+        super(props);
 
         document.title = config.appName;
+
+        this._listenOnProtocolMessages
+            = this._listenOnProtocolMessages.bind(this);
+    }
+
+    /**
+     * Implements React's {@link Component#componentDidMount()}.
+     *
+     * @returns {void}
+     */
+    componentDidMount() {
+        // start listening on this events
+        window.jitsiNodeAPI.ipc.on('protocol-data-msg', this._listenOnProtocolMessages);
+
+        // send notification to main process
+        window.jitsiNodeAPI.ipc.send('renderer-ready');
+    }
+
+    /**
+     * Implements React's {@link Component#componentWillUnmount()}.
+     *
+     * @returns {void}
+     */
+    componentWillUnmount() {
+        // remove listening for this events
+        window.jitsiNodeAPI.ipc.removeListener(
+            'protocol-data-msg',
+            this._listenOnProtocolMessages
+        );
+    }
+
+    _listenOnProtocolMessages: (*) => void;
+
+    /**
+     * Handler when main proccess contact us.
+     *
+     * @param {Object} event - Message event.
+     * @param {string} inputURL - String with room name.
+     *
+     * @returns {void}
+     */
+    _listenOnProtocolMessages(event, inputURL: string) {
+        // Remove trailing slash if one exists.
+        if (inputURL.substr(-1) === '/') {
+            inputURL = inputURL.substr(0, inputURL.length - 1); // eslint-disable-line no-param-reassign
+        }
+
+        const conference = createConferenceObjectFromURL(inputURL);
+
+        // Don't navigate if conference couldn't be created
+        if (!conference) {
+            return;
+        }
+
+        // change route when we are notified
+        this.props.dispatch(push('/conference', conference));
     }
 
     /**
@@ -50,3 +108,5 @@ export default class App extends Component<*> {
         );
     }
 }
+
+export default connect()(App);
diff --git a/app/features/config/index.js b/app/features/config/index.js
index dde9fb3..9983fe9 100644
--- a/app/features/config/index.js
+++ b/app/features/config/index.js
@@ -16,6 +16,12 @@ export default {
     appName: 'Jitsi Meet',
 
     /**
+    * The prefix for application protocol.
+    * You will also need to replace this in package.json.
+    */
+    appProtocolPrefix: 'jitsi-meet',
+
+    /**
      * The default server URL of Jitsi Meet Deployment that will be used.
      */
     defaultServerURL: 'https://meet.jit.si',
diff --git a/app/features/utils/functions.js b/app/features/utils/functions.js
index 4c7bf5a..e8e11e2 100644
--- a/app/features/utils/functions.js
+++ b/app/features/utils/functions.js
@@ -54,3 +54,40 @@ export function normalizeServerURL(url: string) {
 export function openExternalLink(link: string) {
     window.jitsiNodeAPI.openExternalLink(link);
 }
+
+
+/**
+ * Get URL, extract room name from it and create a Conference object.
+ *
+ * @param {string} inputURL - Combined server url with room separated by /.
+ * @returns {Object}
+ */
+export function createConferenceObjectFromURL(inputURL: string) {
+    const lastIndexOfSlash = inputURL.lastIndexOf('/');
+    let room;
+    let serverURL;
+
+    if (lastIndexOfSlash === -1) {
+        // This must be only the room name.
+        room = inputURL;
+    } else {
+        // Take the substring after last slash to be the room name.
+        room = inputURL.substring(lastIndexOfSlash + 1);
+
+        // Take the substring before last slash to be the Server URL.
+        serverURL = inputURL.substring(0, lastIndexOfSlash);
+
+        // Normalize the server URL.
+        serverURL = normalizeServerURL(serverURL);
+    }
+
+    // Don't navigate if no room was specified.
+    if (!room) {
+        return;
+    }
+
+    return {
+        room,
+        serverURL
+    };
+}
diff --git a/app/features/welcome/components/Welcome.js b/app/features/welcome/components/Welcome.js
index 4a04661..f0bb138 100644
--- a/app/features/welcome/components/Welcome.js
+++ b/app/features/welcome/components/Welcome.js
@@ -15,7 +15,7 @@ import { push } from 'react-router-redux';
 import { Navbar } from '../../navbar';
 import { Onboarding, startOnboarding } from '../../onboarding';
 import { RecentList } from '../../recent-list';
-import { normalizeServerURL } from '../../utils';
+import { createConferenceObjectFromURL } from '../../utils';
 
 import { Body, FieldWrapper, Form, Header, Label, Wrapper } from '../styled';
 
@@ -206,33 +206,14 @@ class Welcome extends Component<Props, State> {
      */
     _onJoin() {
         const inputURL = this.state.url || this.state.generatedRoomname;
-        const lastIndexOfSlash = inputURL.lastIndexOf('/');
-        let room;
-        let serverURL;
-
-        if (lastIndexOfSlash === -1) {
-            // This must be only the room name.
-            room = inputURL;
-        } else {
-            // Take the substring after last slash to be the room name.
-            room = inputURL.substring(lastIndexOfSlash + 1);
-
-            // Take the substring before last slash to be the Server URL.
-            serverURL = inputURL.substring(0, lastIndexOfSlash);
-
-            // Normalize the server URL.
-            serverURL = normalizeServerURL(serverURL);
-        }
+        const conference = createConferenceObjectFromURL(inputURL);
 
-        // Don't navigate if no room was specified.
-        if (!room) {
+        // Don't navigate if conference couldn't be created
+        if (!conference) {
             return;
         }
 
-        this.props.dispatch(push('/conference', {
-            room,
-            serverURL
-        }));
+        this.props.dispatch(push('/conference', conference));
     }
 
     _onURLChange: (*) => void;
diff --git a/app/preload/preload.js b/app/preload/preload.js
index cbe9aab..85064ea 100644
--- a/app/preload/preload.js
+++ b/app/preload/preload.js
@@ -1,11 +1,10 @@
 const createElectronStorage = require('redux-persist-electron-storage');
-const { shell } = require('electron');
+const { ipcRenderer, shell } = require('electron');
 const os = require('os');
 const url = require('url');
 
 const jitsiMeetElectronUtils = require('jitsi-meet-electron-utils');
 
-
 const protocolRegex = /^https?:/i;
 
 /**
@@ -28,10 +27,35 @@ function openExternalLink(link) {
     }
 }
 
+const whitelistedIpcChannels = [ 'protocol-data-msg', 'renderer-ready' ];
 
 window.jitsiNodeAPI = {
     createElectronStorage,
     osUserInfo: os.userInfo,
     openExternalLink,
-    jitsiMeetElectronUtils
+    jitsiMeetElectronUtils,
+    shellOpenExternal: shell.openExternal,
+    ipc: {
+        on: (channel, listener) => {
+            if (!whitelistedIpcChannels.includes(channel)) {
+                return;
+            }
+
+            return ipcRenderer.on(channel, listener);
+        },
+        send: channel => {
+            if (!whitelistedIpcChannels.includes(channel)) {
+                return;
+            }
+
+            return ipcRenderer.send(channel);
+        },
+        removeListener: (channel, listener) => {
+            if (!whitelistedIpcChannels.includes(channel)) {
+                return;
+            }
+
+            return ipcRenderer.removeListener(channel, listener);
+        }
+    }
 };
diff --git a/main.js b/main.js
index 296741d..0ca6cde 100644
--- a/main.js
+++ b/main.js
@@ -4,6 +4,7 @@ const {
     BrowserWindow,
     Menu,
     app,
+    ipcMain,
     shell
 } = require('electron');
 const contextMenu = require('electron-context-menu');
@@ -72,6 +73,14 @@ if (isDev) {
 let mainWindow = null;
 
 /**
+ * Add protocol data
+ */
+const appProtocolSurplus = `${config.default.appProtocolPrefix}://`;
+let rendererReady = false;
+let protocolDataForFrontApp = null;
+
+
+/**
  * Sets the application menu. It is hidden on all platforms except macOS because
  * otherwise copy and paste functionality is not available.
  */
@@ -211,6 +220,44 @@ function createJitsiMeetWindow() {
     mainWindow.once('ready-to-show', () => {
         mainWindow.show();
     });
+
+    /**
+     * This is for windows [win32]
+     * so when someone tries to enter something like jitsi-meet://test
+     *  while app is closed
+     * it will trigger this event below
+     */
+    if (process.platform === 'win32') {
+        handleProtocolCall(process.argv.pop());
+    }
+}
+
+/**
+ * Handler for application protocol links to initiate a conference.
+ */
+function handleProtocolCall(fullProtocolCall) {
+    // don't touch when something is bad
+    if (
+        !fullProtocolCall
+        || fullProtocolCall.trim() === ''
+        || fullProtocolCall.indexOf(appProtocolSurplus) !== 0
+    ) {
+        return;
+    }
+
+    const inputURL = fullProtocolCall.replace(appProtocolSurplus, '');
+
+    if (app.isReady() && mainWindow === null) {
+        createJitsiMeetWindow();
+    }
+
+    protocolDataForFrontApp = inputURL;
+
+    if (rendererReady) {
+        mainWindow
+            .webContents
+            .send('protocol-data-msg', inputURL);
+    }
 }
 
 /**
@@ -247,7 +294,7 @@ app.on('certificate-error',
 
 app.on('ready', createJitsiMeetWindow);
 
-app.on('second-instance', () => {
+app.on('second-instance', (event, commandLine) => {
     /**
      * If someone creates second instance of the application, set focus on
      * existing window.
@@ -255,6 +302,13 @@ app.on('second-instance', () => {
     if (mainWindow) {
         mainWindow.isMinimized() && mainWindow.restore();
         mainWindow.focus();
+
+        /**
+         * This is for windows [win32]
+         * so when someone tries to enter something like jitsi-meet://test
+         * while app is opened it will trigger protocol handler.
+         */
+        handleProtocolCall(commandLine.pop());
     }
 });
 
@@ -264,3 +318,41 @@ app.on('window-all-closed', () => {
         app.quit();
     }
 });
+
+// remove so we can register each time as we run the app.
+app.removeAsDefaultProtocolClient(config.default.appProtocolPrefix);
+
+// If we are running a non-packaged version of the app && on windows
+if (isDev && process.platform === 'win32') {
+    // Set the path of electron.exe and your app.
+    // These two additional parameters are only available on windows.
+    app.setAsDefaultProtocolClient(
+        config.default.appProtocolPrefix,
+        process.execPath,
+        [ path.resolve(process.argv[1]) ]
+    );
+} else {
+    app.setAsDefaultProtocolClient(config.default.appProtocolPrefix);
+}
+
+/**
+ * This is for mac [darwin]
+ * so when someone tries to enter something like jitsi-meet://test
+ * it will trigger this event below
+ */
+app.on('open-url', (event, data) => {
+    event.preventDefault();
+    handleProtocolCall(data);
+});
+
+/**
+ * This is to notify main.js [this] that front app is ready to receive messages.
+ */
+ipcMain.on('renderer-ready', () => {
+    rendererReady = true;
+    if (protocolDataForFrontApp) {
+        mainWindow
+            .webContents
+            .send('protocol-data-msg', protocolDataForFrontApp);
+    }
+});
diff --git a/package.json b/package.json
index 0e52f08..d1fea59 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,16 @@
     },
     "directories": {
       "buildResources": "resources"
-    }
+    },
+    "protocols": [
+      {
+        "name": "jitsi-protocol",
+        "role": "Viewer",
+        "schemes": [
+          "jitsi-meet"
+        ]
+      }
+    ]
   },
   "pre-commit": [
     "lint"