Feature/current users (#774)

* Provide user role in context context.

* Also provide user for backwards compatibility.

* Show current users on resource.

* Fix tests.

backend/extensions/Squidex.Extensions/APM/Stackdriver/StackdriverExceptionHandler.cs

@@ -52,11 +52,18 @@ namespace Squidex.Extensions.APM.Stackdriver
         }
 
         public void Append(IObjectWriter writer, SemanticLogLevel logLevel, Exception exception)
+        {
+            try
             {
                 if (exception != null && exception is not DomainException)
                 {
                     logger.Log(exception, httpContextWrapper);
                 }
             }
+            catch
+            {
+                return;
+            }
+        }
     }
 }

backend/src/Squidex.Domain.Apps.Entities/Backup/BackupGrain.cs

@@ -51,8 +51,8 @@ namespace Squidex.Domain.Apps.Entities.Backup
             IEventStore eventStore,
             IGrainState<BackupState> state,
             IServiceProvider serviceProvider,
-            IUserResolver userResolver,
+            ISemanticLog log,
-            ISemanticLog log)
+            IUserResolver userResolver)
         {
             this.backupArchiveLocation = backupArchiveLocation;
             this.backupArchiveStore = backupArchiveStore;

backend/src/Squidex.Domain.Apps.Entities/Comments/GrainWatchingService.cs

@@ -0,0 +1,36 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Threading.Tasks;
+using Orleans;
+using Squidex.Infrastructure;
+
+namespace Squidex.Domain.Apps.Entities.Comments
+{
+    public sealed class GrainWatchingService : IWatchingService
+    {
+        private readonly IGrainFactory grainFactory;
+
+        public GrainWatchingService(IGrainFactory grainFactory)
+        {
+            this.grainFactory = grainFactory;
+        }
+
+        public Task<string[]> GetWatchingUsersAsync(DomainId appId, string resource, string userId)
+        {
+            Guard.NotNullOrEmpty(resource, nameof(resource));
+            Guard.NotNullOrEmpty(userId, nameof(userId));
+
+            return GetGrain(appId).GetWatchingUsersAsync(resource, userId);
+        }
+
+        private IWatchingGrain GetGrain(DomainId appId)
+        {
+            return grainFactory.GetGrain<IWatchingGrain>(appId.ToString());
+        }
+    }
+}

backend/src/Squidex.Domain.Apps.Entities/Comments/IWatchingGrain.cs

@@ -0,0 +1,17 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Threading.Tasks;
+using Orleans;
+
+namespace Squidex.Domain.Apps.Entities.Comments
+{
+    public interface IWatchingGrain : IGrainWithStringKey
+    {
+        Task<string[]> GetWatchingUsersAsync(string resource, string userId);
+    }
+}

backend/src/Squidex.Domain.Apps.Entities/Comments/IWatchingService.cs

@@ -0,0 +1,17 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using Squidex.Infrastructure;
+using System.Threading.Tasks;
+
+namespace Squidex.Domain.Apps.Entities.Comments
+{
+    public interface IWatchingService
+    {
+        Task<string[]> GetWatchingUsersAsync(DomainId appId, string resource, string userId);
+    }
+}

backend/src/Squidex.Domain.Apps.Entities/Comments/WatchingGrain.cs

@@ -0,0 +1,88 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using NodaTime;
+using Squidex.Infrastructure;
+using Squidex.Infrastructure.Orleans;
+
+namespace Squidex.Domain.Apps.Entities.Comments
+{
+    public sealed class WatchingGrain : GrainBase, IWatchingGrain
+    {
+        private static readonly Duration Timeout = Duration.FromMinutes(1);
+        private readonly Dictionary<string, Dictionary<string, Instant>> users = new Dictionary<string, Dictionary<string, Instant>>();
+        private readonly IClock clock;
+
+        public WatchingGrain(IClock clock)
+        {
+            this.clock = clock;
+        }
+
+        public override Task OnActivateAsync()
+        {
+            var time = TimeSpan.FromSeconds(30);
+
+            RegisterTimer(x =>
+            {
+                Cleanup();
+
+                return Task.CompletedTask;
+            }, null, time, time);
+
+            return Task.CompletedTask;
+        }
+
+        public Task<string[]> GetWatchingUsersAsync(string resource, string userId)
+        {
+            Guard.NotNullOrEmpty(resource, nameof(resource));
+            Guard.NotNullOrEmpty(userId, nameof(userId));
+
+            var usersByResource = users.GetOrAddNew(resource);
+
+            usersByResource[userId] = clock.GetCurrentInstant();
+
+            return Task.FromResult(usersByResource.Keys.ToArray());
+        }
+
+        public void Cleanup()
+        {
+            if (users.Count == 0)
+            {
+                return;
+            }
+
+            var now = clock.GetCurrentInstant();
+
+            foreach (var (resource, usersByResource) in users.ToList())
+            {
+                foreach (var (userId, lastSeen) in usersByResource.ToList())
+                {
+                    var timeSinceLastSeen = now - lastSeen;
+
+                    if (timeSinceLastSeen > Timeout)
+                    {
+                        usersByResource.Remove(userId);
+                    }
+                }
+
+                if (usersByResource.Count == 0)
+                {
+                    users.Remove(resource);
+                }
+            }
+
+            if (users.Count == 0)
+            {
+                TryDeactivateOnIdle();
+            }
+        }
+    }
+}

backend/src/Squidex.Domain.Apps.Entities/Tags/TagGrain.cs

@@ -26,6 +26,8 @@ namespace Squidex.Domain.Apps.Entities.Tags
             public TagsExport Tags { get; set; } = new TagsExport();
         }
 
+        public TagsExport Tags => state.Value.Tags;
+
         public TagGrain(IGrainState<State> state)
         {
             this.state = state;
@@ -53,28 +55,9 @@ namespace Squidex.Domain.Apps.Entities.Tags
                 {
                     if (!string.IsNullOrWhiteSpace(tag))
                     {
-                        var tagName = tag.ToLowerInvariant();
+                        var name = tag.ToLowerInvariant();
-                        var tagId = string.Empty;
-
-                        var (key, value) = state.Value.Tags.FirstOrDefault(x => string.Equals(x.Value.Name, tagName, StringComparison.OrdinalIgnoreCase));
-
-                        if (value != null)
-                        {
-                            tagId = key;
 
-                            if (ids == null || !ids.Contains(tagId))
+                        result.Add(name, GetId(name, ids));
-                            {
-                                value.Count++;
-                            }
-                        }
-                        else
-                        {
-                            tagId = DomainId.NewGuid().ToString();
-
-                            state.Value.Tags.Add(tagId, new Tag { Name = tagName });
-                        }
-
-                        result.Add(tagName, tagId);
                     }
                 }
             }
@@ -85,13 +68,13 @@ namespace Squidex.Domain.Apps.Entities.Tags
                 {
                     if (!result.ContainsValue(id))
                     {
-                        if (state.Value.Tags.TryGetValue(id, out var tagInfo))
+                        if (Tags.TryGetValue(id, out var tagInfo))
                         {
                             tagInfo.Count--;
 
                             if (tagInfo.Count <= 0)
                             {
-                                state.Value.Tags.Remove(id);
+                                Tags.Remove(id);
                             }
                         }
                     }
@@ -103,13 +86,34 @@ namespace Squidex.Domain.Apps.Entities.Tags
             return result;
         }
 
+        private string GetId(string name, HashSet<string>? ids)
+        {
+            var (id, value) = Tags.FirstOrDefault(x => string.Equals(x.Value.Name, name, StringComparison.OrdinalIgnoreCase));
+
+            if (value != null)
+            {
+                if (ids == null || !ids.Contains(id))
+                {
+                    value.Count++;
+                }
+            }
+            else
+            {
+                id = DomainId.NewGuid().ToString();
+
+                Tags.Add(id, new Tag { Name = name });
+            }
+
+            return id;
+        }
+
         public Task<Dictionary<string, string>> GetTagIdsAsync(HashSet<string> names)
         {
             var result = new Dictionary<string, string>();
 
             foreach (var name in names)
             {
-                var id = state.Value.Tags.FirstOrDefault(x => string.Equals(x.Value.Name, name, StringComparison.OrdinalIgnoreCase)).Key;
+                var (id, _) = Tags.FirstOrDefault(x => string.Equals(x.Value.Name, name, StringComparison.OrdinalIgnoreCase));
 
                 if (!string.IsNullOrWhiteSpace(id))
                 {
@@ -126,7 +130,7 @@ namespace Squidex.Domain.Apps.Entities.Tags
 
             foreach (var id in ids)
             {
-                if (state.Value.Tags.TryGetValue(id, out var tagInfo))
+                if (Tags.TryGetValue(id, out var tagInfo))
                 {
                     result[id] = tagInfo.Name;
                 }
@@ -137,14 +141,14 @@ namespace Squidex.Domain.Apps.Entities.Tags
 
         public Task<TagsSet> GetTagsAsync()
         {
-            var tags = state.Value.Tags.Values.ToDictionary(x => x.Name, x => x.Count);
+            var tags = Tags.Values.ToDictionary(x => x.Name, x => x.Count);
 
             return Task.FromResult(new TagsSet(tags, state.Version));
         }
 
         public Task<TagsExport> GetExportableTagsAsync()
         {
-            return Task.FromResult(state.Value.Tags);
+            return Task.FromResult(Tags);
         }
     }
 }

backend/src/Squidex.Web/Pipeline/ActionContextLogAppender.cs

@@ -26,6 +26,8 @@ namespace Squidex.Web.Pipeline
         }
 
         public void Append(IObjectWriter writer, SemanticLogLevel logLevel, Exception? exception)
+        {
+            try
             {
                 var httpContext = httpContextAccessor.HttpContext;
 
@@ -58,6 +60,11 @@ namespace Squidex.Web.Pipeline
                     }
                 });
             }
+            catch
+            {
+                return;
+            }
+        }
 
         private static string GetRequestId(HttpContext httpContext)
         {

backend/src/Squidex/Areas/Api/Controllers/Apps/Models/AppDto.cs

@@ -83,6 +83,11 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
         /// </summary>
         public bool CanAccessContent { get; set; }
 
+        /// <summary>
+        /// The role name of the user.
+        /// </summary>
+        public string? RoleName { get; set; }
+
         /// <summary>
         /// The properties from the role.
         /// </summary>
@@ -101,6 +106,15 @@ namespace Squidex.Areas.Api.Controllers.Apps.Models
             {
                 isContributor = true;
 
+                result.RoleName = roleName;
+                result.RoleProperties = role.Properties;
+                result.Permissions = permissions.ToIds();
+
+                permissions = role.Permissions;
+            }
+            else if (app.Clients.TryGetValue(userId, out var client) && app.Roles.TryGet(app.Name, client.Role, isFrontend, out role))
+            {
+                result.RoleName = roleName;
                 result.RoleProperties = role.Properties;
                 result.Permissions = permissions.ToIds();
 

backend/src/Squidex/Areas/Api/Controllers/Comments/CommentsController.cs

@@ -15,6 +15,8 @@ using Squidex.Domain.Apps.Entities.Comments;
 using Squidex.Domain.Apps.Entities.Comments.Commands;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Commands;
+using Squidex.Infrastructure.Security;
+using Squidex.Infrastructure.Translations;
 using Squidex.Shared;
 using Squidex.Web;
 
@@ -27,11 +29,36 @@ namespace Squidex.Areas.Api.Controllers.Comments
     public sealed class CommentsController : ApiController
     {
         private readonly ICommentsLoader commentsLoader;
+        private readonly IWatchingService watchingService;
 
-        public CommentsController(ICommandBus commandBus, ICommentsLoader commentsLoader)
+        public CommentsController(ICommandBus commandBus, ICommentsLoader commentsLoader,
+            IWatchingService watchingService)
             : base(commandBus)
         {
             this.commentsLoader = commentsLoader;
+
+            this.watchingService = watchingService;
+        }
+
+        /// <summary>
+        /// Get all watching users..
+        /// </summary>
+        /// <param name="app">The name of the app.</param>
+        /// <param name="resource">The path to the resource.</param>
+        /// <returns>
+        /// 200 => Watching users returned.
+        /// 404 => App not found.
+        /// </returns>
+        [HttpGet]
+        [Route("apps/{app}/watching/{*resource}")]
+        [ProducesResponseType(typeof(string[]), StatusCodes.Status200OK)]
+        [ApiPermissionOrAnonymous]
+        [ApiCosts(0)]
+        public async Task<IActionResult> GetWatchingUsers(string app, string? resource = null)
+        {
+            var result = await watchingService.GetWatchingUsersAsync(App.Id, resource ?? "all", UserId());
+
+            return Ok(result);
         }
 
         /// <summary>
@@ -140,5 +167,17 @@ namespace Squidex.Areas.Api.Controllers.Comments
 
             return NoContent();
         }
+
+        private string UserId()
+        {
+            var subject = User.OpenIdSubject();
+
+            if (string.IsNullOrWhiteSpace(subject))
+            {
+                throw new DomainForbiddenException(T.Get("common.httpOnlyAsUser"));
+            }
+
+            return subject;
+        }
     }
 }

backend/src/Squidex/Config/Domain/CommentsServices.cs

@@ -1,4 +1,4 @@
-// ==========================================================================
+// ==========================================================================
 //  Squidex Headless CMS
 // ==========================================================================
 //  Copyright (c) Squidex UG (haftungsbeschraenkt)
@@ -14,6 +14,9 @@ namespace Squidex.Config.Domain
     {
         public static void AddSquidexComments(this IServiceCollection services)
         {
+            services.AddSingletonAs<GrainWatchingService>()
+                .As<IWatchingService>();
+
             services.AddSingletonAs<CommentsLoader>()
                 .As<ICommentsLoader>();
         }

backend/tests/Squidex.Domain.Apps.Entities.Tests/Comments/GrainWatchingServiceTests.cs

@@ -0,0 +1,46 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Threading.Tasks;
+using FakeItEasy;
+using Orleans;
+using Squidex.Infrastructure;
+using Xunit;
+
+namespace Squidex.Domain.Apps.Entities.Comments
+{
+    public class GrainWatchingServiceTests
+    {
+        private readonly IGrainFactory grainFactory = A.Fake<IGrainFactory>();
+        private readonly GrainWatchingService sut;
+
+        public GrainWatchingServiceTests()
+        {
+            sut = new GrainWatchingService(grainFactory);
+        }
+
+        [Fact]
+        public async Task Should_call_grain_if_retrieving_watching_users()
+        {
+            var appId = DomainId.NewGuid();
+            var userResource = "resource1";
+            var userIdentity = "user1";
+
+            var grain = A.Fake<IWatchingGrain>();
+
+            A.CallTo(() => grainFactory.GetGrain<IWatchingGrain>(appId.ToString(), null))
+                .Returns(grain);
+
+            A.CallTo(() => grain.GetWatchingUsersAsync(userResource, userIdentity))
+                .Returns(Task.FromResult(new[] { "user1", "user2" }));
+
+            var result = await sut.GetWatchingUsersAsync(appId, userResource, userIdentity);
+
+            Assert.Equal(new[] { "user1", "user2" }, result);
+        }
+    }
+}

backend/tests/Squidex.Domain.Apps.Entities.Tests/Comments/WatchingGrainTests.cs

@@ -0,0 +1,72 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Threading.Tasks;
+using FakeItEasy;
+using NodaTime;
+using Xunit;
+
+namespace Squidex.Domain.Apps.Entities.Comments
+{
+    public class WatchingGrainTests
+    {
+        private readonly IClock clock = A.Fake<IClock>();
+        private readonly WatchingGrain sut;
+        private Instant now = SystemClock.Instance.GetCurrentInstant();
+
+        public WatchingGrainTests()
+        {
+            A.CallTo(() => clock.GetCurrentInstant())
+                .ReturnsLazily(() => now);
+
+            sut = new WatchingGrain(clock);
+        }
+
+        [Fact]
+        public async Task Should_only_return_self_if_no_one_watching()
+        {
+            var watching = await sut.GetWatchingUsersAsync("resource1", "user1");
+
+            Assert.Equal(new[] { "user1" }, watching);
+        }
+
+        [Fact]
+        public async Task Should_return_users_watching_on_same_resource()
+        {
+            await sut.GetWatchingUsersAsync("resource1", "user1");
+            await sut.GetWatchingUsersAsync("resource2", "user2");
+
+            var watching1 = await sut.GetWatchingUsersAsync("resource1", "user3");
+            var watching2 = await sut.GetWatchingUsersAsync("resource2", "user4");
+
+            Assert.Equal(new[] { "user1", "user3" }, watching1);
+            Assert.Equal(new[] { "user2", "user4" }, watching2);
+        }
+
+        [Fact]
+        public async Task Should_cleanup_old_users()
+        {
+            await sut.GetWatchingUsersAsync("resource1", "user1");
+            await sut.GetWatchingUsersAsync("resource2", "user2");
+
+            now = now.Plus(Duration.FromMinutes(2));
+
+            sut.Cleanup();
+
+            await sut.GetWatchingUsersAsync("resource1", "user3");
+            await sut.GetWatchingUsersAsync("resource2", "user4");
+
+            sut.Cleanup();
+
+            var watching1 = await sut.GetWatchingUsersAsync("resource1", "user5");
+            var watching2 = await sut.GetWatchingUsersAsync("resource2", "user6");
+
+            Assert.Equal(new[] { "user3", "user5" }, watching1);
+            Assert.Equal(new[] { "user4", "user6" }, watching2);
+        }
+    }
+}

frontend/app/features/content/pages/content/content-page.component.html

@@ -51,6 +51,8 @@
         <ng-container menu>
             <div class="menu">
                 <ng-container *ngIf="content; else noContentMenu">
+                    <sqx-watching-users resource="{{schema.id}}/{{content.id}}"></sqx-watching-users>
+
                     <sqx-notifo topic="apps/{{contentsState.appId}}/schemas/{{schema?.name}}/contents/{{content.id}}"></sqx-notifo>
         
                     <ng-container *ngIf="languages.length > 1">

frontend/app/features/content/pages/content/content-page.component.ts

@@ -57,11 +57,13 @@ export class ContentPageComponent extends ResourceOwner implements CanComponentD
     ) {
         super();
 
+        const role = appsState.snapshot.selectedApp?.roleName;
+
         this.formContext = {
             apiUrl: apiUrl.buildUrl('api'),
             appId: contentsState.appId,
-            appName: appsState.appName,
+            appName: contentsState.appName,
-            user: authService.user,
+            user: { role, ...authService.user?.export() },
         };
     }
 

frontend/app/framework/angular/stateful.component.ts

@@ -7,8 +7,8 @@
 
 import { ChangeDetectorRef, Directive, OnDestroy } from '@angular/core';
 import { ControlValueAccessor } from '@angular/forms';
-import { Observable, Subscription } from 'rxjs';
+import { EMPTY, Observable, Subscription } from 'rxjs';
-import { onErrorResumeNext, skip } from 'rxjs/operators';
+import { catchError, skip } from 'rxjs/operators';
 import { State } from './../state';
 import { Types } from './../utils/types';
 
@@ -23,7 +23,7 @@ export class ResourceOwner implements OnDestroy {
             if (Types.isFunction(subscription['subscribe'])) {
                 const observable = <Observable<T>>subscription;
 
-                this.subscriptions.push(observable.pipe(onErrorResumeNext()).subscribe());
+                this.subscriptions.push(observable.pipe(catchError(_ => EMPTY)).subscribe());
             } else {
                 this.subscriptions.push(<any>subscription);
             }

frontend/app/framework/utils/rxjs-extensions.ts

@@ -69,7 +69,14 @@ export function defined<T>() {
 
 export function switchSafe<T, R>(project: (source: T) => Observable<R>) {
     return function mapOperation(source: Observable<T>) {
-        return source.pipe(switchMap(project), onErrorResumeNext());
+        return source.pipe(
+            switchMap(x => {
+                try {
+                    return project(x).pipe(catchError(_ => EMPTY));
+                } catch {
+                    return EMPTY;
+                }
+            }));
     };
 }
 

frontend/app/shared/components/comments/comments.component.ts

@@ -8,10 +8,10 @@
 import { ChangeDetectorRef, Component, ElementRef, Input, OnChanges, QueryList, ViewChild, ViewChildren } from '@angular/core';
 import { FormBuilder } from '@angular/forms';
 import { Router } from '@angular/router';
+import { switchSafe } from '@app/framework';
 import { AppsState, AuthService, CommentDto, CommentsService, CommentsState, ContributorsState, DialogService, ResourceOwner, UpsertCommentForm } from '@app/shared/internal';
 import { MentionConfig } from 'angular-mentions';
 import { timer } from 'rxjs';
-import { onErrorResumeNext, switchMap } from 'rxjs/operators';
 import { CommentComponent } from './comment.component';
 
 @Component({
@@ -58,7 +58,7 @@ export class CommentsComponent extends ResourceOwner implements OnChanges {
         this.commentsUrl = `apps/${this.appsState.appName}/comments/${this.commentsId}`;
         this.commentsState = new CommentsState(this.commentsUrl, this.commentsService, this.dialogs);
 
-        this.own(timer(0, 4000).pipe(switchMap(() => this.commentsState.load(true).pipe(onErrorResumeNext()))));
+        this.own(timer(0, 4000).pipe(switchSafe(() => this.commentsState.load(true))));
     }
 
     public scrollDown() {

frontend/app/shared/components/watching-users.component.html

@@ -0,0 +1,11 @@
+<ng-container *ngIf="users | async; let currentUsers">
+    <ng-container *ngIf="currentUsers.length > 1">
+        <div class="user-item" *ngFor="let userId of currentUsers | slice:0:5; let i = index" [style]="{ zIndex: i }">
+            <img class="user-picture" title="{{userId | sqxUserName}}" [src]="userId | sqxUserPicture">
+        </div>
+    
+        <div class="user-item" *ngIf="currentUsers.length > 5" [style]="{ zIndex: 6 }">
+            <div class="user-more">+{{currentUsers.length - 5}}</div>
+        </div>
+    </ng-container>
+</ng-container>

frontend/app/shared/components/watching-users.component.scss

@@ -0,0 +1,31 @@
+:host {
+    display: flex;
+    align-items: center;
+    margin-right: .5rem;
+}
+
+.user-item {
+    display: inline-block;
+    margin-right: 0;
+    margin-left: -1.1rem;
+    position: relative;
+
+    &:hover {
+        z-index: 1000 !important;
+    }
+
+    .user-picture,
+    .user-more {
+        @include circle(2.3rem);
+        border: 2px solid $color-white;
+    }
+
+    .user-more {
+        background: $color-border;
+        font-size: 90%;
+        font-weight: bolder;
+        line-height: 2rem;
+        text-align: center;
+        z-index: 6;
+    }
+}

frontend/app/shared/components/watching-users.component.ts

@@ -0,0 +1,33 @@
+/*
+ * Squidex Headless CMS
+ *
+ * @license
+ * Copyright (c) Squidex UG (haftungsbeschränkt). All rights reserved.
+ */
+
+import { ChangeDetectionStrategy, Component, Input } from '@angular/core';
+import { AppsState, CommentsService, switchSafe } from '@app/shared/internal';
+import { timer } from 'rxjs';
+
+@Component({
+    selector: 'sqx-watching-users[resource]',
+    styleUrls: ['./watching-users.component.scss'],
+    templateUrl: './watching-users.component.html',
+    changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class WatchingUsersComponent {
+    private appName: string;
+
+    @Input()
+    public resource: string;
+
+    public users =
+        timer(0, 5000).pipe(
+            switchSafe((() => this.commentsService.getWatchingUsers(this.appName, this.resource))));
+
+    constructor(appsState: AppsState,
+        private readonly commentsService: CommentsService,
+    ) {
+        this.appName = appsState.appName;
+    }
+}

frontend/app/shared/declarations.ts

@@ -56,6 +56,7 @@ export * from './components/search/query-list.component';
 export * from './components/search/search-form.component';
 export * from './components/search/shared-queries.component';
 export * from './components/table-header.component';
+export * from './components/watching-users.component';
 export * from './guards/app-must-exist.guard';
 export * from './guards/content-must-exist.guard';
 export * from './guards/load-apps.guard';

frontend/app/shared/module.ts

@@ -12,7 +12,7 @@ import { RouterModule } from '@angular/router';
 import { SqxFrameworkModule } from '@app/framework';
 import { MentionModule } from 'angular-mentions';
 import { NgxDocViewerModule } from 'ngx-doc-viewer';
-import { AppFormComponent, AppLanguagesService, AppMustExistGuard, AppsService, AppsState, AssetComponent, AssetDialogComponent, AssetFolderComponent, AssetFolderDialogComponent, AssetFolderDropdownComponent, AssetFolderDropdownItemComponent, AssetHistoryComponent, AssetPathComponent, AssetPreviewUrlPipe, AssetScriptsState, AssetsListComponent, AssetsSelectorComponent, AssetsService, AssetsState, AssetTextEditorComponent, AssetUploaderComponent, AssetUploaderState, AssetUrlPipe, AuthInterceptor, AuthService, AutoSaveService, BackupsService, BackupsState, ClientsService, ClientsState, CommentComponent, CommentsComponent, CommentsService, ContentListCellDirective, ContentListFieldComponent, ContentListHeaderComponent, ContentListWidthPipe, ContentMustExistGuard, ContentsColumnsPipe, ContentSelectorComponent, ContentSelectorItemComponent, ContentsService, ContentsState, ContentStatusComponent, ContentValueComponent, ContentValueEditorComponent, ContributorsService, ContributorsState, FileIconPipe, FilterComparisonComponent, FilterLogicalComponent, FilterNodeComponent, GeolocationEditorComponent, GraphQlService, HelpComponent, HelpMarkdownPipe, HelpService, HistoryComponent, HistoryListComponent, HistoryMessagePipe, HistoryService, ImageCropperComponent, ImageFocusPointComponent, LanguagesService, LanguagesState, LoadAppsGuard, LoadLanguagesGuard, LoadSchemasGuard, MarkdownEditorComponent, MustBeAuthenticatedGuard, MustBeNotAuthenticatedGuard, NewsService, NotifoComponent, PlansService, PlansState, PreviewableType, QueryComponent, QueryListComponent, QueryPathComponent, ReferenceDropdownComponent, ReferenceInputComponent, ReferencesCheckboxesComponent, ReferencesTagsComponent, RichEditorComponent, RolesService, RolesState, RuleEventsState, RuleMustExistGuard, RuleSimulatorState, RulesService, RulesState, SavedQueriesComponent, SchemaCategoryComponent, SchemaMustExistGuard, SchemaMustExistPublishedGuard, SchemaMustNotBeSingletonGuard, SchemasService, SchemasState, SchemaTagSource, SearchFormComponent, SearchService, SortingComponent, StockPhotoService, TableHeaderComponent, TranslationsService, UIService, UIState, UnsetAppGuard, UsagesService, UserDtoPicture, UserIdPicturePipe, UserNamePipe, UserNameRefPipe, UserPicturePipe, UserPictureRefPipe, UsersProviderService, UsersService, WorkflowsService, WorkflowsState } from './declarations';
+import { AppFormComponent, AppLanguagesService, AppMustExistGuard, AppsService, AppsState, AssetComponent, AssetDialogComponent, AssetFolderComponent, AssetFolderDialogComponent, AssetFolderDropdownComponent, AssetFolderDropdownItemComponent, AssetHistoryComponent, AssetPathComponent, AssetPreviewUrlPipe, AssetScriptsState, AssetsListComponent, AssetsSelectorComponent, AssetsService, AssetsState, AssetTextEditorComponent, AssetUploaderComponent, AssetUploaderState, AssetUrlPipe, AuthInterceptor, AuthService, AutoSaveService, BackupsService, BackupsState, ClientsService, ClientsState, CommentComponent, CommentsComponent, CommentsService, ContentListCellDirective, ContentListFieldComponent, ContentListHeaderComponent, ContentListWidthPipe, ContentMustExistGuard, ContentsColumnsPipe, ContentSelectorComponent, ContentSelectorItemComponent, ContentsService, ContentsState, ContentStatusComponent, ContentValueComponent, ContentValueEditorComponent, ContributorsService, ContributorsState, FileIconPipe, FilterComparisonComponent, FilterLogicalComponent, FilterNodeComponent, GeolocationEditorComponent, GraphQlService, HelpComponent, HelpMarkdownPipe, HelpService, HistoryComponent, HistoryListComponent, HistoryMessagePipe, HistoryService, ImageCropperComponent, ImageFocusPointComponent, LanguagesService, LanguagesState, LoadAppsGuard, LoadLanguagesGuard, LoadSchemasGuard, MarkdownEditorComponent, MustBeAuthenticatedGuard, MustBeNotAuthenticatedGuard, NewsService, NotifoComponent, PlansService, PlansState, PreviewableType, QueryComponent, QueryListComponent, QueryPathComponent, ReferenceDropdownComponent, ReferenceInputComponent, ReferencesCheckboxesComponent, ReferencesTagsComponent, RichEditorComponent, RolesService, RolesState, RuleEventsState, RuleMustExistGuard, RuleSimulatorState, RulesService, RulesState, SavedQueriesComponent, SchemaCategoryComponent, SchemaMustExistGuard, SchemaMustExistPublishedGuard, SchemaMustNotBeSingletonGuard, SchemasService, SchemasState, SchemaTagSource, SearchFormComponent, SearchService, SortingComponent, StockPhotoService, TableHeaderComponent, TranslationsService, UIService, UIState, UnsetAppGuard, UsagesService, UserDtoPicture, UserIdPicturePipe, UserNamePipe, UserNameRefPipe, UserPicturePipe, UserPictureRefPipe, UsersProviderService, UsersService, WatchingUsersComponent, WorkflowsService, WorkflowsState } from './declarations';
 
 @NgModule({
     imports: [
@@ -84,6 +84,7 @@ import { AppFormComponent, AppLanguagesService, AppMustExistGuard, AppsService,
         UserNameRefPipe,
         UserPicturePipe,
         UserPictureRefPipe,
+        WatchingUsersComponent,
     ],
     exports: [
         AppFormComponent,
@@ -138,6 +139,7 @@ import { AppFormComponent, AppLanguagesService, AppMustExistGuard, AppsService,
         UserNameRefPipe,
         UserPicturePipe,
         UserPictureRefPipe,
+        WatchingUsersComponent,
     ],
 })
 export class SqxSharedModule {

frontend/app/shared/services/apps.service.spec.ts

@@ -333,8 +333,7 @@ describe('AppsService', () => {
             permissions: ['Owner'],
             canAccessApi: id % 2 === 0,
             canAccessContent: id % 2 === 0,
-            planName: 'Free',
+            roleName: `Role${id}`,
-            planUpgrade: 'Basic',
             roleProperties: createProperties(id),
             _links: {
                 update: { method: 'PUT', href: `apps/${id}` },
@@ -394,7 +393,7 @@ export function createApp(id: number, suffix = '') {
         ['Owner'],
         id % 2 === 0,
         id % 2 === 0,
-        'Free', 'Basic',
+        `Role${id}`,
         createProperties(id));
 }
 

frontend/app/shared/services/apps.service.ts

@@ -47,8 +47,7 @@ export class AppDto {
         public readonly permissions: ReadonlyArray<string>,
         public readonly canAccessApi: boolean,
         public readonly canAccessContent: boolean,
-        public readonly planName: string | undefined,
+        public readonly roleName: string | undefined,
-        public readonly planUpgrade: string | undefined,
         public readonly roleProperties: {},
     ) {
         this._links = links;
@@ -326,8 +325,7 @@ function parseApp(response: any) {
         response.permissions,
         response.canAccessApi,
         response.canAccessContent,
-        response.planName,
+        response.roleName,
-        response.planUpgrade,
         response.roleProperties);
 }
 

frontend/app/shared/services/auth.service.ts

@@ -52,6 +52,29 @@ export class Profile {
         public readonly user: User,
     ) {
     }
+
+    public export() {
+        const result: any = {
+            id: this.id,
+            accessToken: this.accessToken,
+            accessCode: this.accessToken,
+            authorization: this.authorization,
+            displayName: this.displayName,
+            email: this.email,
+            notifoEnabled: !!this.notifoToken,
+            notifoToken: this.notifoToken,
+            picture: this.pictureUrl,
+            pictureUrl: this.pictureUrl,
+            token: this.token,
+            user: this.user,
+        };
+
+        for (const key of Object.keys(this.user.profile)) {
+            result[key] = this.user.profile[key];
+        }
+
+        return result;
+    }
 }
 
 @Injectable()

frontend/app/shared/services/comments.service.spec.ts

@@ -28,6 +28,25 @@ describe('CommentsService', () => {
         httpMock.verify();
     }));
 
+    it('should make get request to get watching users',
+        inject([CommentsService, HttpTestingController], (commentsService: CommentsService, httpMock: HttpTestingController) => {
+            let userIds: ReadonlyArray<string>;
+
+            commentsService.getWatchingUsers('my-app', 'my-resource').subscribe(result => {
+                userIds = result;
+            });
+
+            const req = httpMock.expectOne('http://service/p/api/apps/my-app/watching/my-resource');
+
+            expect(req.request.method).toEqual('GET');
+            expect(req.request.headers.get('If-Match')).toBeNull();
+            expect(req.request.headers.get('X-Silent')).toBe('1');
+
+            req.flush(['user1', 'user2']);
+
+            expect(userIds!).toEqual(['user1', 'user2']);
+        }));
+
     it('should make get request to get comments',
         inject([CommentsService, HttpTestingController], (commentsService: CommentsService, httpMock: HttpTestingController) => {
             let comments: CommentsDto;

frontend/app/shared/services/comments.service.ts

@@ -45,6 +45,18 @@ export class CommentsService {
     ) {
     }
 
+    public getWatchingUsers(appId: string, resource: string): Observable<ReadonlyArray<string>> {
+        const url = this.apiUrl.buildUrl(`api/apps/${appId}/watching/${resource}`);
+
+        const options = {
+            headers: new HttpHeaders({
+                'X-Silent': '1',
+            }),
+        };
+
+        return this.http.get<ReadonlyArray<string>>(url, options);
+    }
+
     public getComments(commentsUrl: string, version: Version): Observable<CommentsDto> {
         const url = this.apiUrl.buildUrl(`api/${commentsUrl}?version=${version.value}`);