add UI in settings for push notifs status/enable/disable

src/domain/session/settings/SettingsViewModel.js

@@ -17,6 +17,14 @@ limitations under the License.
 import {ViewModel} from "../../ViewModel.js";
 import {SessionBackupViewModel} from "./SessionBackupViewModel.js";
 
+class PushNotificationStatus {
+    constructor() {
+        this.supported = null;
+        this.enabled = false;
+        this.updating = false;
+    }
+}
+
 function formatKey(key) {
     const partLength = 4;
     const partCount = Math.ceil(key.length / partLength);
@@ -40,6 +48,7 @@ export class SettingsViewModel extends ViewModel {
         this.sentImageSizeLimit = null;
         this.minSentImageSizeLimit = 400;
         this.maxSentImageSizeLimit = 4000;
+        this.pushNotifications = new PushNotificationStatus();
     }
 
     setSentImageSizeLimit(size) {
@@ -56,6 +65,8 @@ export class SettingsViewModel extends ViewModel {
     async load() {
         this._estimate = await this.platform.estimateStorageUsage();
         this.sentImageSizeLimit = await this.platform.settingsStorage.getInt("sentImageSizeLimit");
+        this.pushNotifications.supported = await this.platform.notificationService.supportsPush();
+        this.pushNotifications.enabled = await this._session.arePushNotificationsEnabled();
         this.emitChange("");
     }
 
@@ -115,5 +126,21 @@ export class SettingsViewModel extends ViewModel {
         const logExport = await this.logger.export();
         this.platform.saveFileAs(logExport.asBlob(), `hydrogen-logs-${this.platform.clock.now()}.json`);
     }
+
+    async togglePushNotifications() {
+        this.pushNotifications.updating = true;
+        this.emitChange("pushNotifications.updating");
+        try {
+            if (await this._session.enablePushNotifications(!this.pushNotifications.enabled)) {
+                this.pushNotifications.enabled = !this.pushNotifications.enabled;
+                if (this.pushNotifications.enabled) {
+                    this.platform.notificationService.showNotification(this.i18n`Push notifications are now enabled`);
+                }
+            }
+        } finally {
+        this.pushNotifications.updating = false;
+            this.emitChange("pushNotifications.updating");
+        }
+    }
 }
 

src/platform/web/ui/session/settings/SettingsView.js

@@ -34,27 +34,60 @@ export class SettingsView extends TemplateView {
             ]);
         };
 
-        return t.main({className: "Settings middle"}, [
+        const settingNodes = [];
-            t.div({className: "middle-header"}, [
+
-                t.a({className: "button-utility close-middle", href: vm.closeUrl, title: vm.i18n`Close settings`}),
+        settingNodes.push(
-                t.h2("Settings")
-            ]),
-            t.div({className: "SettingsBody"}, [
             t.h3("Session"),
             row(vm.i18n`User ID`, vm.userId),
             row(vm.i18n`Session ID`, vm.deviceId, "code"),
-                row(vm.i18n`Session key`, vm.fingerprintKey, "code"),
+            row(vm.i18n`Session key`, vm.fingerprintKey, "code")
+        );
+        settingNodes.push(
             t.h3("Session Backup"),
-                t.view(new SessionBackupSettingsView(vm.sessionBackupViewModel)),
+            t.view(new SessionBackupSettingsView(vm.sessionBackupViewModel))
+        );
+
+        settingNodes.push(
+            t.h3("Notifications"),
+            t.map(vm => vm.pushNotifications.supported, (supported, t) => {
+                if (supported === null) {
+                    return t.p(vm.i18n`Loading…`);
+                } else if (supported) {
+                    const label = vm => vm.pushNotifications.enabled ?
+                        vm.i18n`Push notifications are enabled`:
+                        vm.i18n`Push notifications are disabled`;
+                    const buttonLabel = vm => vm.pushNotifications.enabled ?
+                        vm.i18n`Disable`:
+                        vm.i18n`Enable`;
+                    return row(label, t.button({
+                        onClick: () => vm.togglePushNotifications(),
+                        disabled: vm => vm.pushNotifications.updating
+                    }, buttonLabel));
+                } else {
+                    return t.p(vm.i18n`Push notifications are not supported on this browser`);
+                }
+            })
+        );
+
+        settingNodes.push(
             t.h3("Preferences"),
             row(vm.i18n`Scale down images when sending`, this._imageCompressionRange(t, vm)),
+        );
+        settingNodes.push(
             t.h3("Application"),
             row(vm.i18n`Version`, version),
             row(vm.i18n`Storage usage`, vm => `${vm.storageUsage} / ${vm.storageQuota}`),
             row(vm.i18n`Debug logs`, t.button({onClick: () => vm.exportLogs()}, "Export")),
             t.p(["Debug logs contain application usage data including your username, the IDs or aliases of the rooms or groups you have visited, the usernames of other users and the names of files you send. They do not contain messages. For more information, review our ",
                 t.a({href: "https://element.io/privacy", target: "_blank", rel: "noopener"}, "privacy policy"), "."]),
-            ])
+        );
+
+        return t.main({className: "Settings middle"}, [
+            t.div({className: "middle-header"}, [
+                t.a({className: "button-utility close-middle", href: vm.closeUrl, title: vm.i18n`Close settings`}),
+                t.h2("Settings")
+            ]),
+            t.div({className: "SettingsBody"}, settingNodes)
         ]);
     }