App plan handling changed.

src/Squidex.Domain.Apps.Read/Apps/Services/IAppPlanBillingManager.cs

@@ -15,7 +15,7 @@ namespace Squidex.Domain.Apps.Read.Apps.Services
     {
         bool HasPortal { get; }
 
-        Task ChangePlanAsync(string userId, Guid appId, string appName, string planId);
+        Task<IChangePlanResult> ChangePlanAsync(string userId, Guid appId, string appName, string planId);
 
         Task<bool> HasPaymentOptionsAsync(string userId);
 

src/Squidex.Domain.Apps.Read/Apps/Services/IChangePlanResult.cs

@@ -0,0 +1,14 @@
+// ==========================================================================
+//  IChangePlanResult.cs
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex Group
+//  All rights reserved.
+// ==========================================================================
+
+namespace Squidex.Domain.Apps.Read.Apps.Services
+{
+    public interface IChangePlanResult
+    {
+    }
+}

src/Squidex.Domain.Apps.Read/Apps/Services/Implementations/NoopAppPlanBillingManager.cs

@@ -19,9 +19,9 @@ namespace Squidex.Domain.Apps.Read.Apps.Services.Implementations
             get { return false; }
         }
 
-        public Task ChangePlanAsync(string userId, Guid appId, string appName, string planId)
+        public Task<IChangePlanResult> ChangePlanAsync(string userId, Guid appId, string appName, string planId)
         {
-            return TaskHelper.Done;
+            return Task.FromResult<IChangePlanResult>(PlanChangedResult.Instance);
         }
 
         public Task<bool> HasPaymentOptionsAsync(string userId)

src/Squidex.Domain.Apps.Read/Apps/Services/PlanChangeAsyncResult.cs

@@ -0,0 +1,18 @@
+// ==========================================================================
+//  PlanChangeAsyncResult.cs
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex Group
+//  All rights reserved.
+// ==========================================================================
+namespace Squidex.Domain.Apps.Read.Apps.Services
+{
+    public sealed class PlanChangeAsyncResult : IChangePlanResult
+    {
+        public static readonly PlanChangeAsyncResult Instance = new PlanChangeAsyncResult();
+
+        private PlanChangeAsyncResult()
+        {
+        }
+    }
+}

src/Squidex.Domain.Apps.Read/Apps/Services/PlanChangedResult.cs

@@ -0,0 +1,19 @@
+// ==========================================================================
+//  PlanChangedResult.cs
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex Group
+//  All rights reserved.
+// ==========================================================================
+
+namespace Squidex.Domain.Apps.Read.Apps.Services
+{
+    public sealed class PlanChangedResult : IChangePlanResult
+    {
+        public static readonly PlanChangedResult Instance = new PlanChangedResult();
+
+        private PlanChangedResult()
+        {
+        }
+    }
+}

src/Squidex.Domain.Apps.Read/Apps/Services/RedirectToCheckoutResult.cs

@@ -0,0 +1,25 @@
+// ==========================================================================
+//  RedirectToCheckoutResult.cs
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex Group
+//  All rights reserved.
+// ==========================================================================
+
+using System;
+using Squidex.Infrastructure;
+
+namespace Squidex.Domain.Apps.Read.Apps.Services
+{
+    public sealed class RedirectToCheckoutResult : IChangePlanResult
+    {
+        public Uri Url { get; }
+
+        public RedirectToCheckoutResult(Uri url)
+        {
+            Guard.NotNull(url, nameof(url));
+
+            Url = url;
+        }
+    }
+}

src/Squidex.Domain.Apps.Write/Apps/AppCommandHandler.cs

@@ -106,10 +106,22 @@ namespace Squidex.Domain.Apps.Write.Apps
             }
 
             return handler.UpdateAsync<AppDomainObject>(context, async a =>
+            {
+                if (command.FromCallback)
+                {
+                    a.ChangePlan(command);
+                }
+                else
+                {
+                    var result = await appPlansBillingManager.ChangePlanAsync(command.Actor.Identifier, a.Id, a.Name, command.PlanId);
+
+                    if (result is PlanChangedResult)
                     {
                         a.ChangePlan(command);
+                    }
 
-                await appPlansBillingManager.ChangePlanAsync(command.Actor.Identifier, a.Id, a.Name, command.PlanId);
+                    context.Succeed(result);
+                }
             });
         }
 

src/Squidex.Domain.Apps.Write/Apps/Commands/ChangePlan.cs

@@ -13,6 +13,8 @@ namespace Squidex.Domain.Apps.Write.Apps.Commands
 {
     public sealed class ChangePlan : AppAggregateCommand, IValidatable
     {
+        public bool FromCallback { get; set; }
+
         public string PlanId { get; set; }
 
         public void Validate(IList<ValidationError> errors)

src/Squidex.Infrastructure.GetEventStore/CQRS/Events/GetEventStoreSubscription.cs

@@ -189,7 +189,7 @@ namespace Squidex.Infrastructure.CQRS.Events
                         }
                     }
 
-                    if (reason != SubscriptionDropReason.UserInitiated && reason != SubscriptionDropReason.EventHandlerException)
+                    if (reason != SubscriptionDropReason.UserInitiated)
                     {
                         var exception = ex ?? new ConnectionClosedException($"Subscription closed with reason {reason}.");
 

src/Squidex.Infrastructure.MongoDb/CQRS/Events/MongoEventStore.cs

@@ -83,7 +83,7 @@ namespace Squidex.Infrastructure.CQRS.Events
 
             var filter = CreateFilter(streamFilter, lastPosition);
 
-            await Collection.Find(filter).Sort(Sort.Ascending(EventStreamField)).ForEachAsync(async commit =>
+            await Collection.Find(filter).Sort(Sort.Ascending(TimestampField)).ForEachAsync(async commit =>
             {
                 var eventStreamOffset = (int)commit.EventStreamOffset;
 

src/Squidex.Infrastructure/CQRS/Events/EventReceiver.cs

@@ -140,26 +140,17 @@ namespace Squidex.Infrastructure.CQRS.Events
 
             var subscription = eventStore.CreateSubscription(eventConsumer.EventsFilter, position);
 
-            async Task StopSubscriptionAsync(Exception exception)
-            {
-                await eventConsumerInfoRepository.StopAsync(consumerName, exception.ToString());
-
-                subscription.Dispose();
-            }
-
             await subscription.SubscribeAsync(async storedEvent =>
-            {
-                try
             {
                 await DispatchConsumer(ParseEvent(storedEvent), eventConsumer, eventConsumer.Name);
 
                 await eventConsumerInfoRepository.SetPositionAsync(eventConsumer.Name, storedEvent.EventPosition, false);
-                }
-                catch (Exception ex)
+            }, async exception =>
             {
-                    await StopSubscriptionAsync(ex);
-                }
-            }, StopSubscriptionAsync);
+                await eventConsumerInfoRepository.StopAsync(consumerName, exception.ToString());
+
+                subscription.Dispose();
+            });
 
             currentSubscription = subscription;
         }

src/Squidex.Infrastructure/Timers/CompletionTimer.cs

@@ -49,6 +49,8 @@ namespace Squidex.Infrastructure.Timers
         }
 
         private async Task RunInternal(int delay, int initialDelay, Func<CancellationToken, Task> callback)
+        {
+            try
             {
                 if (initialDelay > 0)
                 {
@@ -72,6 +74,11 @@ namespace Squidex.Infrastructure.Timers
                     await WaitAsync(delay).ConfigureAwait(false);
                 }
             }
+            catch
+            {
+                
+            }
+        }
 
         private async Task WaitAsync(int intervall)
         {

src/Squidex/Config/Domain/ReadModule.cs

@@ -9,8 +9,10 @@
 using System.Collections.Generic;
 using System.Linq;
 using Autofac;
+using Microsoft.AspNetCore.Identity;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Options;
+using Squidex.Chargebee;
 using Squidex.Domain.Apps.Read.Apps;
 using Squidex.Domain.Apps.Read.Apps.Services;
 using Squidex.Domain.Apps.Read.Apps.Services.Implementations;
@@ -22,8 +24,10 @@ using Squidex.Domain.Apps.Read.Schemas;
 using Squidex.Domain.Apps.Read.Schemas.Services;
 using Squidex.Domain.Apps.Read.Schemas.Services.Implementations;
 using Squidex.Domain.Users;
+using Squidex.Infrastructure;
 using Squidex.Infrastructure.CQRS.Events;
 using Squidex.Pipeline;
+using Squidex.Shared.Users;
 
 // ReSharper disable UnusedAutoPropertyAccessor.Local
 
@@ -55,11 +59,6 @@ namespace Squidex.Config.Domain
                 .AsSelf()
                 .SingleInstance();
 
-            builder.RegisterType<NoopAppPlanBillingManager>()
-                .As<IAppPlanBillingManager>()
-                .AsSelf()
-                .SingleInstance();
-
             builder.RegisterType<CachingSchemaProvider>()
                 .As<ISchemaProvider>()
                 .AsSelf()
@@ -98,6 +97,23 @@ namespace Squidex.Config.Domain
                 .As<IGraphQLService>()
                 .AsSelf()
                 .InstancePerDependency();
+
+            var chargebeeSiteName = Configuration.GetValue<string>("chargebee:siteName");
+            var chargebeeApiKey = Configuration.GetValue<string>("chargebee:apiKey");
+
+            if (string.IsNullOrWhiteSpace(chargebeeSiteName))
+            {
+                throw new ConfigurationException("Configure Chargebee SiteName type with 'chargebee:siteName'.");
+            }
+            if (string.IsNullOrWhiteSpace(chargebeeApiKey))
+            {
+                throw new ConfigurationException("Configure Chargebee ApiKey with 'chargebee:apiKey'.");
+            }
+
+            builder.Register(c => new ChargebeeAppPlanBillingManager(c.Resolve<UserManager<IUser>>(), chargebeeSiteName, chargebeeApiKey))
+                .As<IAppPlanBillingManager>()
+                .AsSelf()
+                .SingleInstance();
         }
     }
 }

src/Squidex/Controllers/Api/Plans/AppPlansController.cs

@@ -19,6 +19,8 @@ using Squidex.Infrastructure.Reflection;
 using Squidex.Infrastructure.Security;
 using Squidex.Pipeline;
 
+// ReSharper disable RedundantIfElseBlock
+
 namespace Squidex.Controllers.Api.Plans
 {
     /// <summary>
@@ -81,6 +83,7 @@ namespace Squidex.Controllers.Api.Plans
         /// <param name="app">The name of the app.</param>
         /// <param name="request">Plan object that needs to be changed.</param>
         /// <returns>
+        /// 201 => Redirected to checkout page.
         /// 204 => Plan changed.
         /// 400 => Plan not owned by user.
         /// 404 => App not found.
@@ -88,13 +91,20 @@ namespace Squidex.Controllers.Api.Plans
         [MustBeAppOwner]
         [HttpPut]
         [Route("apps/{app}/plan/")]
+        [ProducesResponseType(typeof(PlanChangedDto), 200)]
         [ProducesResponseType(typeof(ErrorDto), 400)]
         [ApiCosts(0.5)]
         public async Task<IActionResult> ChangePlanAsync(string app, [FromBody] ChangePlanDto request)
         {
-            await CommandBus.PublishAsync(SimpleMapper.Map(request, new ChangePlan()));
+            var redirectUri = (string)null;
+            var context = await CommandBus.PublishAsync(SimpleMapper.Map(request, new ChangePlan()));
+
+            if (context.Result<object>() is RedirectToCheckoutResult result)
+            {
+                redirectUri = result.Url.ToString();
+            }
 
-            return NoContent();
+            return Ok(new PlanChangedDto { RedirectUri = redirectUri });
         }
     }
 }

src/Squidex/Controllers/Api/Plans/Models/PlanChangedDto.cs

@@ -0,0 +1,18 @@
+// ==========================================================================
+//  PlanChangedDto.cs
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex Group
+//  All rights reserved.
+// ==========================================================================
+
+namespace Squidex.Controllers.Api.Plans.Models
+{
+    public class PlanChangedDto
+    {
+        /// <summary>
+        /// Optional redirect uri.
+        /// </summary>
+        public string RedirectUri { get; set; }
+    }
+}

src/Squidex/app/features/settings/pages/plans/plans-page.component.ts

@@ -67,6 +67,9 @@ export class PlansPageComponent extends AppComponentBase implements OnInit {
         this.appNameOnce()
             .switchMap(app => this.plansService.putPlan(app, new ChangePlanDto(planId), this.version))
             .subscribe(dto => {
+                if (dto.redirectUri && dto.redirectUri.length > 0) {
+                    window.location.replace(dto.redirectUri);
+                } else {
                     this.plans =
                         new AppPlansDto(planId,
                             this.plans.planOwner,
@@ -74,6 +77,7 @@ export class PlansPageComponent extends AppComponentBase implements OnInit {
                             this.plans.hasConfigured,
                             this.plans.plans);
                     this.isDisabled = false;
+                }
             }, error => {
                 this.notifyError(error);
                 this.isDisabled = false;

src/Squidex/app/shared/services/plans.service.spec.ts

@@ -12,6 +12,7 @@ import {
     AppPlansDto,
     ApiUrlConfig,
     ChangePlanDto,
+    PlanChangedDto,
     PlanDto,
     PlansService,
     Version
@@ -93,11 +94,19 @@ describe('PlansService', () => {
 
         const dto = new ChangePlanDto('enterprise');
 
-        plansService.putPlan('my-app', dto, version).subscribe();
+        let planChanged: PlanChangedDto | null = null;
+
+        plansService.putPlan('my-app', dto, version).subscribe(result => {
+            planChanged = result;
+        });
 
         const req = httpMock.expectOne('http://service/p/api/apps/my-app/plan');
 
+        req.flush({ redirectUri: 'my-url' });
+
         expect(req.request.method).toEqual('PUT');
         expect(req.request.headers.get('If-Match')).toBe(version.value);
+
+        expect(planChanged).toBe(new PlanChangedDto('my-url'));
     }));
 });

src/Squidex/app/shared/services/plans.service.ts

@@ -40,6 +40,13 @@ export class PlanDto {
     }
 }
 
+export class PlanChangedDto {
+    constructor(
+        public readonly redirectUri: string
+    ) {
+    }
+}
+
 export class ChangePlanDto {
     constructor(
         public readonly planId: string
@@ -80,10 +87,13 @@ export class PlansService {
                 .pretifyError('Failed to load plans. Please reload.');
     }
 
-    public putPlan(appName: string, dto: ChangePlanDto, version?: Version): Observable<any> {
+    public putPlan(appName: string, dto: ChangePlanDto, version?: Version): Observable<PlanChangedDto> {
         const url = this.apiUrl.buildUrl(`api/apps/${appName}/plan`);
 
         return HTTP.putVersioned(this.http, url, dto, version)
+                .map(response => {
+                    return new PlanChangedDto(response.redirectUri);
+                })
                 .pretifyError('Failed to change plan. Please reload.');
     }
 }

tests/Squidex.Domain.Apps.Write.Tests/Apps/AppCommandHandlerTests.cs

@@ -232,6 +232,41 @@ namespace Squidex.Domain.Apps.Write.Apps
             appPlansBillingManager.Verify(x => x.ChangePlanAsync(User.Identifier, app.Id, app.Name, "my-plan"), Times.Once());
         }
 
+        [Fact]
+        public async Task ChangePlan_should_not_make_update_for_redirect_result()
+        {
+            appPlansProvider.Setup(x => x.IsConfiguredPlan("my-plan")).Returns(true);
+            appPlansBillingManager.Setup(x => x.ChangePlanAsync(User.Identifier, app.Id, app.Name, "my-plan")).Returns(CreateRedirectResult());
+
+            CreateApp();
+
+            var context = CreateContextForCommand(new ChangePlan { PlanId = "my-plan" });
+
+            await TestUpdate(app, async _ =>
+            {
+                await sut.HandleAsync(context);
+            });
+
+            Assert.Null(app.PlanId);
+        }
+
+        [Fact]
+        public async Task ChangePlan_should_not_call_billing_manager_for_callback()
+        {
+            appPlansProvider.Setup(x => x.IsConfiguredPlan("my-plan")).Returns(true);
+
+            CreateApp();
+
+            var context = CreateContextForCommand(new ChangePlan { PlanId = "my-plan", FromCallback = true });
+
+            await TestUpdate(app, async _ =>
+            {
+                await sut.HandleAsync(context);
+            });
+
+            appPlansBillingManager.Verify(x => x.ChangePlanAsync(User.Identifier, app.Id, app.Name, "my-plan"), Times.Never());
+        }
+
         [Fact]
         public async Task AddLanguage_should_update_domain_object()
         {
@@ -279,5 +314,10 @@ namespace Squidex.Domain.Apps.Write.Apps
 
             return app;
         }
+
+        private static Task<IChangePlanResult> CreateRedirectResult()
+        {
+            return Task.FromResult<IChangePlanResult>(new RedirectToCheckoutResult(new Uri("http://squidex.io")));
+        }
     }
 }

tests/Squidex.Infrastructure.Tests/CQRS/Events/EventReceiverTests.cs

@@ -43,7 +43,7 @@ namespace Squidex.Infrastructure.CQRS.Events
                 this.storedEvents = storedEvents;
             }
 
-            public Task SubscribeAsync(Func<StoredEvent, Task> onNext, Func<Exception, Task> onError)
+            public async Task SubscribeAsync(Func<StoredEvent, Task> onNext, Func<Exception, Task> onError)
             {
                 foreach (var storedEvent in storedEvents)
                 {
@@ -52,10 +52,15 @@ namespace Squidex.Infrastructure.CQRS.Events
                         break;
                     }
 
-                    onNext(storedEvent).Wait();
+                    try
+                    {
+                        await onNext(storedEvent);
+                    }
+                    catch (Exception ex)
+                    {
+                        await onError(ex);
+                    }
                 }
-
-                return TaskHelper.Done;
             }
 
             public void Dispose()

tests/Squidex.Infrastructure.Tests/Timers/CompletionTimerTests.cs

@@ -6,9 +6,12 @@
 //  All rights reserved.
 // ==========================================================================
 
+using System.Threading;
 using Squidex.Infrastructure.Tasks;
 using Xunit;
 
+// ReSharper disable AccessToModifiedClosure
+
 namespace Squidex.Infrastructure.Timers
 {
     public class CompletionTimerTests
@@ -30,5 +33,22 @@ namespace Squidex.Infrastructure.Timers
 
             Assert.True(called);
         }
+
+        public void Should_invoke_dispose_within_timer()
+        {
+            CompletionTimer timer = null;
+
+            timer = new CompletionTimer(10, ct =>
+            {
+                timer?.Dispose();
+
+                return TaskHelper.Done;
+            }, 10);
+
+            Thread.Sleep(1000);
+
+            timer.Wakeup();
+            timer.Dispose();
+        }
     }
 }