Use same hazel endpoint to notify update to Linux users (#2497)

Add a pseudo auto-updater for Linux

Fixes #2476

app/auto-updater-linux.js

@@ -0,0 +1,50 @@
+'use strict';
+
+const fetch = require('node-fetch');
+const {EventEmitter} = require('events');
+
+class AutoUpdater extends EventEmitter {
+  quitAndInstall() {
+    this.emitError('QuitAndInstall unimplemented');
+  }
+  getFeedURL() {
+    return this.updateURL;
+  }
+
+  setFeedURL(updateURL) {
+    this.updateURL = updateURL;
+  }
+
+  checkForUpdates() {
+    if (!this.updateURL) {
+      return this.emitError('Update URL is not set');
+    }
+    this.emit('checking-for-update');
+
+    fetch(this.updateURL)
+      .then(res => {
+        if (res.status === 204) {
+          return this.emit('update-not-available');
+        }
+        return res.json().then(({name, notes, pub_date}) => {
+          // Only name is mandatory, needed to construct release URL.
+          if (!name) {
+            throw new Error('Malformed server response: release name is missing.');
+          }
+          // If `null` is passed to Date constructor, current time will be used. This doesn't work with `undefined`
+          const date = new Date(pub_date || null);
+          this.emit('update-available', {}, notes, name, date);
+        });
+      })
+      .catch(this.emitError.bind(this));
+  }
+
+  emitError(error) {
+    if (typeof error === 'string') {
+      error = new Error(error);
+    }
+    this.emit('error', error, error.message);
+  }
+}
+
+module.exports = new AutoUpdater();

app/ui/window.js

@@ -4,7 +4,7 @@ const {parse: parseUrl} = require('url');
 const uuid = require('uuid');
 const fileUriToPath = require('file-uri-to-path');
 const isDev = require('electron-is-dev');
-const AutoUpdater = require('../auto-updater');
+const updater = require('../updater');
 const toElectronBackgroundColor = require('../utils/to-electron-background-color');
 const {icon, cfgDir} = require('../config/paths');
 const createRPC = require('../rpc');
@@ -76,8 +76,8 @@ module.exports = class Window {
       delete app.windowCallback;
       fetchNotifications(window);
       // auto updates
-      if (!isDev && process.platform !== 'linux') {
-        AutoUpdater(window);
+      if (!isDev) {
+        updater(window);
       } else {
         //eslint-disable-next-line no-console
         console.log('ignoring auto updates during dev');

app/updater.js

@@ -1,5 +1,6 @@
 // Packages
-const {autoUpdater, app} = require('electron');
+const electron = require('electron');
+const {app} = electron;
 const ms = require('ms');
 const retry = require('async-retry');
 
@@ -7,17 +8,20 @@ const retry = require('async-retry');
 // eslint-disable-next-line no-unused-vars
 const notify = require('./notify');
 const {version} = require('./package');
-const {getConfig} = require('./config');
+const {getDecoratedConfig} = require('./plugins');
 
 const {platform} = process;
+const isLinux = platform === 'linux';
+
+const autoUpdater = isLinux ? require('./auto-updater-linux') : electron.autoUpdater;
 
 let isInit = false;
 // Default to the "stable" update channel
 let canaryUpdates = false;
 
-const buildFeedUrl = canary => {
+const buildFeedUrl = (canary, currentVersion) => {
   const updatePrefix = canary ? 'releases-canary' : 'releases';
-  return `https://${updatePrefix}.hyper.is/update/${platform}`;
+  return `https://${updatePrefix}.hyper.is/update/${isLinux ? 'deb' : platform}/${currentVersion}`;
 };
 
 const isCanary = updateChannel => updateChannel === 'canary';
@@ -29,7 +33,7 @@ async function init() {
   });
 
   const config = await retry(async () => {
-    const content = await getConfig();
+    const content = await getDecoratedConfig();
 
     if (!content) {
       throw new Error('No config content loaded');
@@ -43,9 +47,9 @@ async function init() {
     canaryUpdates = true;
   }
 
-  const feedURL = buildFeedUrl(canaryUpdates);
+  const feedURL = buildFeedUrl(canaryUpdates, version);
 
-  autoUpdater.setFeedURL(`${feedURL}/${version}`);
+  autoUpdater.setFeedURL(feedURL);
 
   setTimeout(() => {
     autoUpdater.checkForUpdates();
@@ -65,11 +69,14 @@ module.exports = win => {
 
   const {rpc} = win;
 
-  const onupdate = (ev, releaseNotes, releaseName) => {
-    rpc.emit('update available', {releaseNotes, releaseName});
+  const onupdate = (ev, releaseNotes, releaseName, date, updateUrl, onQuitAndInstall) => {
+    const releaseUrl = updateUrl || `https://github.com/zeit/hyper/releases/tag/${releaseName}`;
+    rpc.emit('update available', {releaseNotes, releaseName, releaseUrl, canInstall: !!onQuitAndInstall});
   };
 
-  autoUpdater.on('update-downloaded', onupdate);
+  const eventName = isLinux ? 'update-available' : 'update-downloaded';
+
+  autoUpdater.on(eventName, onupdate);
 
   rpc.once('quit and install', () => {
     autoUpdater.quitAndInstall();
@@ -80,9 +87,9 @@ module.exports = win => {
     const newUpdateIsCanary = isCanary(updateChannel);
 
     if (newUpdateIsCanary !== canaryUpdates) {
-      const feedURL = buildFeedUrl(newUpdateIsCanary);
+      const feedURL = buildFeedUrl(newUpdateIsCanary, version);
 
-      autoUpdater.setFeedURL(`${feedURL}/${version}`);
+      autoUpdater.setFeedURL(feedURL);
       autoUpdater.checkForUpdates();
 
       canaryUpdates = newUpdateIsCanary;
@@ -90,6 +97,6 @@ module.exports = win => {
   });
 
   win.on('close', () => {
-    autoUpdater.removeListener('update-downloaded', onupdate);
+    autoUpdater.removeListener(eventName, onupdate);
   });
 };

lib/actions/updater.js

@@ -10,10 +10,12 @@ export function installUpdate() {
   };
 }
 
-export function updateAvailable(version, notes) {
+export function updateAvailable(version, notes, releaseUrl, canInstall) {
   return {
     type: UPDATE_AVAILABLE,
     version,
-    notes
+    notes,
+    releaseUrl,
+    canInstall
   };
 }

lib/components/notifications.js

@@ -79,20 +79,38 @@ export default class Notifications extends PureComponent {
                 window.require('electron').shell.openExternal(ev.target.href);
                 ev.preventDefault();
               }}
-              href={`https://github.com/zeit/hyper/releases/tag/${this.props.updateVersion}`}
+              href={this.props.updateReleaseUrl}
             >
               notes
             </a>).{' '}
-            <a
-              style={{
-                cursor: 'pointer',
-                textDecoration: 'underline',
-                fontWeight: 'bold'
-              }}
-              onClick={this.props.onUpdateInstall}
-            >
-              Restart
-            </a>.{' '}
+            {this.props.updateCanInstall ? (
+              <a
+                style={{
+                  cursor: 'pointer',
+                  textDecoration: 'underline',
+                  fontWeight: 'bold'
+                }}
+                onClick={this.props.onUpdateInstall}
+              >
+                Restart
+              </a>
+            ) : (
+              <a
+                style={{
+                  color: '#fff',
+                  cursor: 'pointer',
+                  textDecoration: 'underline',
+                  fontWeight: 'bold'
+                }}
+                onClick={ev => {
+                  window.require('electron').shell.openExternal(ev.target.href);
+                  ev.preventDefault();
+                }}
+                href={this.props.updateReleaseUrl}
+              >
+                Download
+              </a>
+            )}.{' '}
           </Notification>
         )}
         {this.props.customChildren}

lib/containers/notifications.js

@@ -34,7 +34,9 @@ const NotificationsContainer = connect(
       Object.assign(state_, {
         updateShowing: true,
         updateVersion: ui.updateVersion,
-        updateNote: ui.updateNotes.split('\n')[0]
+        updateNote: ui.updateNotes.split('\n')[0],
+        updateReleaseUrl: ui.updateReleaseUrl,
+        updateCanInstall: ui.updateCanInstall
       });
     } else if (notifications.message) {
       Object.assign(state_, {

lib/index.js

@@ -147,8 +147,8 @@ rpc.on('open file', ({path}) => {
   store_.dispatch(uiActions.openFile(path));
 });
 
-rpc.on('update available', ({releaseName, releaseNotes}) => {
-  store_.dispatch(updaterActions.updateAvailable(releaseName, releaseNotes));
+rpc.on('update available', ({releaseName, releaseNotes, releaseUrl, canInstall}) => {
+  store_.dispatch(updaterActions.updateAvailable(releaseName, releaseNotes, releaseUrl, canInstall));
 });
 
 rpc.on('move', () => {

lib/reducers/ui.js

@@ -346,7 +346,9 @@ const reducer = (state = initial, action) => {
     case UPDATE_AVAILABLE:
       state_ = state.merge({
         updateVersion: action.version,
-        updateNotes: action.notes || ''
+        updateNotes: action.notes || '',
+        updateReleaseUrl: action.releaseUrl,
+        updateCanInstall: !!action.canInstall
       });
       break;
   }