Add account expiry warning notification

9 files changed, 62 insertions, 8 deletions

diff --git a/gui/src/main/index.ts b/gui/src/main/index.ts
index 4df3b4c7a2..32620c3574 100644
--- a/gui/src/main/index.ts
+++ b/gui/src/main/index.ts
@@ -2,8 +2,10 @@ import { execFile } from 'child_process';
 import { app, BrowserWindow, ipcMain, Menu, nativeImage, screen, Tray } from 'electron';
 import log from 'electron-log';
 import mkdirp from 'mkdirp';
+import moment from 'moment';
 import * as path from 'path';
 import * as uuid from 'uuid';
+import AccountExpiry from '../shared/account-expiry';
 import BridgeSettingsBuilder from '../shared/bridge-settings-builder';
 import {
   AccountToken,
@@ -145,6 +147,8 @@ class ApplicationMain {
 
   private wireguardPublicKey?: IWireguardPublicKey;
 
+  private accountExpiryNotificationTimeout?: NodeJS.Timeout;
+
   private accountDataCache = new AccountDataCache(
     (accountToken) => {
       return this.daemonRpc.getAccountData(accountToken);
@@ -155,6 +159,8 @@ class ApplicationMain {
       if (this.windowController) {
         IpcMainEventChannel.account.notify(this.windowController.webContents, accountData);
       }
+
+      this.notifyOfAccountExpiry();
     },
   );
 
@@ -1081,6 +1087,11 @@ class ApplicationMain {
   private async logout(): Promise<void> {
     try {
       await this.daemonRpc.setAccount();
+
+      if (this.accountExpiryNotificationTimeout) {
+        global.clearTimeout(this.accountExpiryNotificationTimeout);
+        this.accountExpiryNotificationTimeout = undefined;
+      }
     } catch (error) {
       log.info(`Failed to logout: ${error.message}`);
 
@@ -1132,6 +1143,27 @@ class ApplicationMain {
     }
   }
 
+  private notifyOfAccountExpiry() {
+    if (this.accountData) {
+      const accountExpiry = new AccountExpiry(this.accountData.expiry, this.locale);
+      if (
+        accountExpiry &&
+        !this.accountExpiryNotificationTimeout &&
+        accountExpiry.willHaveExpiredAt(
+          moment()
+            .add(3, 'days')
+            .toDate(),
+        )
+      ) {
+        this.notificationController.closeToExpiryNotification(accountExpiry);
+        this.accountExpiryNotificationTimeout = global.setTimeout(() => {
+          this.accountExpiryNotificationTimeout = undefined;
+          this.notifyOfAccountExpiry();
+        }, 12 * 60 * 60 * 1000); // Every 12 hours
+      }
+    }
+  }
+
   private async updateAccountHistory(): Promise<void> {
     try {
       this.setAccountHistory(await this.daemonRpc.getAccountHistory());
diff --git a/gui/src/main/notification-controller.ts b/gui/src/main/notification-controller.ts
index 98852029f3..69c0f9ec30 100644
--- a/gui/src/main/notification-controller.ts
+++ b/gui/src/main/notification-controller.ts
@@ -3,6 +3,7 @@ import os from 'os';
 import path from 'path';
 import { sprintf } from 'sprintf-js';
 import config from '../config.json';
+import AccountExpiry from '../shared/account-expiry';
 import { TunnelState } from '../shared/daemon-rpc-types';
 import { messages } from '../shared/gettext';
 
@@ -156,6 +157,23 @@ export default class NotificationController {
     this.scheduleNotification(notification);
   }
 
+  public closeToExpiryNotification(accountExpiry: AccountExpiry) {
+    const duration = accountExpiry.durationUntilExpiry();
+    const notification = new Notification({
+      title: this.notificationTitle,
+      body: sprintf(
+        // TRANSLATORS: The system notification displayed to the user when the account credit is close to expiry.
+        // TRANSLATORS: Available placeholder:
+        // TRANSLATORS: %(duration)s - remaining time, e.g. "2 days"
+        messages.pgettext('notifications', 'Account credit expires in %(duration)s'),
+        { duration },
+      ),
+      silent: true,
+      icon: this.notificationIcon,
+    });
+    this.scheduleNotification(notification);
+  }
+
   public cancelPendingNotifications() {
     for (const notification of this.pendingNotifications) {
       notification.close();
diff --git a/gui/src/renderer/components/Account.tsx b/gui/src/renderer/components/Account.tsx
index 1390f78370..5b5a393f62 100644
--- a/gui/src/renderer/components/Account.tsx
+++ b/gui/src/renderer/components/Account.tsx
@@ -1,7 +1,7 @@
 import * as React from 'react';
 import { Component, Text, View } from 'reactxp';
+import AccountExpiry from '../../shared/account-expiry';
 import { messages } from '../../shared/gettext';
-import AccountExpiry from '../lib/account-expiry';
 import styles from './AccountStyles';
 import * as AppButton from './AppButton';
 import ClipboardLabel from './ClipboardLabel';
diff --git a/gui/src/renderer/components/Connect.tsx b/gui/src/renderer/components/Connect.tsx
index 4cb63c6a5b..2308a91dff 100644
--- a/gui/src/renderer/components/Connect.tsx
+++ b/gui/src/renderer/components/Connect.tsx
@@ -1,8 +1,8 @@
 import * as React from 'react';
 import { Component, Styles, View } from 'reactxp';
 import { links } from '../../config.json';
+import AccountExpiry from '../../shared/account-expiry';
 import NotificationAreaContainer from '../containers/NotificationAreaContainer';
-import AccountExpiry from '../lib/account-expiry';
 import { AuthFailureKind, parseAuthFailure } from '../lib/auth-failure';
 import { IConnectionReduxState } from '../redux/connection/reducers';
 import { IVersionReduxState } from '../redux/version/reducers';
diff --git a/gui/src/renderer/components/NotificationArea.tsx b/gui/src/renderer/components/NotificationArea.tsx
index c459695a30..243b406518 100644
--- a/gui/src/renderer/components/NotificationArea.tsx
+++ b/gui/src/renderer/components/NotificationArea.tsx
@@ -13,8 +13,8 @@ import {
   NotificationTitle,
 } from './NotificationBanner';
 
+import AccountExpiry from '../../shared/account-expiry';
 import { ErrorStateCause, TunnelParameterError, TunnelState } from '../../shared/daemon-rpc-types';
-import AccountExpiry from '../lib/account-expiry';
 import { parseAuthFailure } from '../lib/auth-failure';
 import { IVersionReduxState } from '../redux/version/reducers';
 
diff --git a/gui/src/renderer/components/Settings.tsx b/gui/src/renderer/components/Settings.tsx
index dc7f875529..ee5cc8c340 100644
--- a/gui/src/renderer/components/Settings.tsx
+++ b/gui/src/renderer/components/Settings.tsx
@@ -1,8 +1,8 @@
 import * as React from 'react';
 import { Component, Text, View } from 'reactxp';
 import { colors, links } from '../../config.json';
+import AccountExpiry from '../../shared/account-expiry';
 import { messages } from '../../shared/gettext';
-import AccountExpiry from '../lib/account-expiry';
 import * as AppButton from './AppButton';
 import * as Cell from './Cell';
 import { Container, Layout } from './Layout';
diff --git a/gui/src/renderer/containers/ConnectPage.tsx b/gui/src/renderer/containers/ConnectPage.tsx
index e4c37f19cc..de691b0db9 100644
--- a/gui/src/renderer/containers/ConnectPage.tsx
+++ b/gui/src/renderer/containers/ConnectPage.tsx
@@ -3,10 +3,10 @@ import log from 'electron-log';
 import { connect } from 'react-redux';
 import { bindActionCreators } from 'redux';
 import { sprintf } from 'sprintf-js';
+import AccountExpiry from '../../shared/account-expiry';
 import { messages } from '../../shared/gettext';
 import Connect from '../components/Connect';
 import withAppContext, { IAppContext } from '../context';
-import AccountExpiry from '../lib/account-expiry';
 import { IRelayLocationRedux, RelaySettingsRedux } from '../redux/settings/reducers';
 import { IReduxState, ReduxDispatch } from '../redux/store';
 
diff --git a/gui/src/renderer/containers/NotificationAreaContainer.tsx b/gui/src/renderer/containers/NotificationAreaContainer.tsx
index 814b055d97..f282c48fab 100644
--- a/gui/src/renderer/containers/NotificationAreaContainer.tsx
+++ b/gui/src/renderer/containers/NotificationAreaContainer.tsx
@@ -2,9 +2,9 @@ import { connect } from 'react-redux';
 
 import { shell } from 'electron';
 import { links } from '../../config.json';
+import AccountExpiry from '../../shared/account-expiry';
 import NotificationArea from '../components/NotificationArea';
 import withAppContext, { IAppContext } from '../context';
-import AccountExpiry from '../lib/account-expiry';
 import { IReduxState, ReduxDispatch } from '../redux/store';
 
 const mapStateToProps = (state: IReduxState, _props: IAppContext) => ({
diff --git a/gui/src/renderer/lib/account-expiry.ts b/gui/src/shared/account-expiry.ts
index 5393238dcd..8e4c9b2ece 100644
--- a/gui/src/renderer/lib/account-expiry.ts
+++ b/gui/src/shared/account-expiry.ts
@@ -1,6 +1,6 @@
 import moment from 'moment';
 import { sprintf } from 'sprintf-js';
-import { messages } from '../../shared/gettext';
+import { messages } from './gettext';
 
 export default class AccountExpiry {
   private expiry: moment.Moment;
@@ -21,8 +21,12 @@ export default class AccountExpiry {
     return this.expiry.format('L LTS');
   }
 
+  public durationUntilExpiry(): string {
+    return this.expiry.fromNow(true);
+  }
+
   public remainingTime(): string {
-    const duration = this.expiry.fromNow(true);
+    const duration = this.durationUntilExpiry();
 
     return sprintf(
       // TRANSLATORS: The remaining time left on the account displayed across the app.