Blur hash. (#845)

* Blur hash.

* Cleanup

* More fixes.

backend/src/Squidex.Domain.Apps.Core.Operations/HandleRules/Extensions/EventJintExtension.cs

@@ -78,7 +78,7 @@ namespace Squidex.Domain.Apps.Core.HandleRules.Extensions
 
         public void Describe(AddDescription describe, ScriptScope scope)
         {
-            if ((scope & ScriptScope.ContentTrigger) == ScriptScope.ContentTrigger)
+            if (scope.HasFlag(ScriptScope.ContentTrigger))
             {
                 describe(JsonType.Function, "contentAction",
                     Resources.ScriptingContentAction);
@@ -87,7 +87,7 @@ namespace Squidex.Domain.Apps.Core.HandleRules.Extensions
                     Resources.ScriptingContentUrl);
             }
 
-            if ((scope & ScriptScope.AssetTrigger) == ScriptScope.AssetTrigger)
+            if (scope.HasFlag(ScriptScope.AssetTrigger))
             {
                 describe(JsonType.Function, "assetContentUrl",
                 Resources.ScriptingAssetContentUrl);

backend/src/Squidex.Domain.Apps.Core.Operations/Scripting/Extensions/HttpJintExtension.cs

@@ -11,7 +11,6 @@ using Jint.Native;
 using Jint.Native.Json;
 using Jint.Runtime;
 using Squidex.Domain.Apps.Core.Properties;
-using Squidex.Infrastructure.Tasks;
 
 namespace Squidex.Domain.Apps.Core.Scripting.Extensions
 {
@@ -28,28 +27,28 @@ namespace Squidex.Domain.Apps.Core.Scripting.Extensions
 
         public void ExtendAsync(ScriptExecutionContext context)
         {
-            AdBodyMethod(context, HttpMethod.Patch, "patchJSON");
-            AdBodyMethod(context, HttpMethod.Post, "postJSON");
-            AdBodyMethod(context, HttpMethod.Put, "putJSON");
+            AddBodyMethod(context, HttpMethod.Patch, "patchJSON");
+            AddBodyMethod(context, HttpMethod.Post, "postJSON");
+            AddBodyMethod(context, HttpMethod.Put, "putJSON");
             AddMethod(context, HttpMethod.Delete, "deleteJSON");
             AddMethod(context, HttpMethod.Get, "getJSON");
         }
 
         public void Describe(AddDescription describe, ScriptScope scope)
         {
-            describe(JsonType.Function, "getJSON(url, callback, ?headers)",
+            describe(JsonType.Function, "getJSON(url, callback, headers?)",
                 Resources.ScriptingGetJSON);
 
-            describe(JsonType.Function, "postJSON(url, body, callback, ?headers)",
+            describe(JsonType.Function, "postJSON(url, body, callback, headers?)",
                 Resources.ScriptingPostJSON);
 
-            describe(JsonType.Function, "putJSON(url, body, callback, ?headers)",
+            describe(JsonType.Function, "putJSON(url, body, callback, headers?)",
                 Resources.ScriptingPutJson);
 
-            describe(JsonType.Function, "patchJSON(url, body, callback, headers)",
+            describe(JsonType.Function, "patchJSON(url, body, callback, headers?)",
                 Resources.ScriptingPatchJson);
 
-            describe(JsonType.Function, "deleteJSON(url, body, callback, headers)",
+            describe(JsonType.Function, "deleteJSON(url, body, callback, headers?)",
                 Resources.ScriptingDeleteJson);
         }
 
@@ -57,62 +56,51 @@ namespace Squidex.Domain.Apps.Core.Scripting.Extensions
         {
             var action = new HttpJson((url, callback, headers) =>
             {
-                RequestAsync(context, method, url, null, callback, headers).Forget();
+                Request(context, method, url, null, callback, headers);
             });
 
             context.Engine.SetValue(name, action);
         }
 
-        private void AdBodyMethod(ScriptExecutionContext context, HttpMethod method, string name)
+        private void AddBodyMethod(ScriptExecutionContext context, HttpMethod method, string name)
         {
             var action = new HttpJsonWithBody((url, body, callback, headers) =>
             {
-                RequestAsync(context, method, url, body, callback, headers).Forget();
+                Request(context, method, url, body, callback, headers);
             });
 
             context.Engine.SetValue(name, action);
         }
 
-        private async Task RequestAsync(ScriptExecutionContext context, HttpMethod method, string url, JsValue? body, Action<JsValue> callback, JsValue? headers)
+        private void Request(ScriptExecutionContext context, HttpMethod method, string url, JsValue? body, Action<JsValue> callback, JsValue? headers)
         {
-            if (callback == null)
+            context.Schedule(async (scheduler, ct) =>
             {
-                context.Fail(new JavaScriptException("Callback cannot be null."));
-                return;
-            }
-
-            if (!Uri.TryCreate(url, UriKind.Absolute, out var uri))
-            {
-                context.Fail(new JavaScriptException("URL is not valid."));
-                return;
-            }
+                if (callback == null)
+                {
+                    throw new JavaScriptException("Callback cannot be null.");
+                }
 
-            context.MarkAsync();
+                if (!Uri.TryCreate(url, UriKind.Absolute, out var uri))
+                {
+                    throw new JavaScriptException("URL is not valid.");
+                }
 
-            try
-            {
                 using (var httpClient = httpClientFactory.CreateClient())
                 {
                     using (var request = CreateRequest(context, method, uri, body, headers))
                     {
-                        using (var response = await httpClient.SendAsync(request, context.CancellationToken))
+                        using (var response = await httpClient.SendAsync(request, ct))
                         {
                             response.EnsureSuccessStatusCode();
 
-                            var responseObject = await ParseResponse(context, response);
+                            var responseObject = await ParseResponseasync(context, response, ct);
 
-                            // Reset the time contraints and other constraints so that our awaiting does not count as script time.
-                            context.Engine.ResetConstraints();
-
-                            callback(responseObject);
+                            scheduler.Run(callback, responseObject);
                         }
                     }
                 }
-            }
-            catch (Exception ex)
-            {
-                context.Fail(ex);
-            }
+            });
         }
 
         private static HttpRequestMessage CreateRequest(ScriptExecutionContext context, HttpMethod method, Uri uri, JsValue? body, JsValue? headers)
@@ -151,16 +139,17 @@ namespace Squidex.Domain.Apps.Core.Scripting.Extensions
             return request;
         }
 
-        private static async Task<JsValue> ParseResponse(ScriptExecutionContext context, HttpResponseMessage response)
+        private static async Task<JsValue> ParseResponseasync(ScriptExecutionContext context, HttpResponseMessage response,
+            CancellationToken ct)
         {
-            var responseString = await response.Content.ReadAsStringAsync(context.CancellationToken);
+            var responseString = await response.Content.ReadAsStringAsync(ct);
 
-            context.CancellationToken.ThrowIfCancellationRequested();
+            ct.ThrowIfCancellationRequested();
 
             var jsonParser = new JsonParser(context.Engine);
             var jsonValue = jsonParser.Parse(responseString);
 
-            context.CancellationToken.ThrowIfCancellationRequested();
+            ct.ThrowIfCancellationRequested();
 
             return jsonValue;
         }

backend/src/Squidex.Domain.Apps.Core.Operations/Scripting/JintExtensions.cs

@@ -0,0 +1,38 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using Jint;
+using Jint.Native;
+using Squidex.Infrastructure;
+
+namespace Squidex.Domain.Apps.Core.Scripting
+{
+    public static class JintExtensions
+    {
+        public static List<DomainId> ToIds(this JsValue? value)
+        {
+            var ids = new List<DomainId>();
+
+            if (value?.IsString() == true)
+            {
+                ids.Add(DomainId.Create(value.ToString()));
+            }
+            else if (value?.IsArray() == true)
+            {
+                foreach (var item in value.AsArray())
+                {
+                    if (item.IsString())
+                    {
+                        ids.Add(DomainId.Create(item.ToString()));
+                    }
+                }
+            }
+
+            return ids;
+        }
+    }
+}

backend/src/Squidex.Domain.Apps.Core.Operations/Scripting/JintScriptEngine.cs

@@ -19,6 +19,7 @@ using Squidex.Infrastructure;
 using Squidex.Infrastructure.Json.Objects;
 using Squidex.Infrastructure.Translations;
 using Squidex.Infrastructure.Validation;
+using System.Diagnostics;
 
 namespace Squidex.Domain.Apps.Core.Scripting
 {
@@ -49,30 +50,20 @@ namespace Squidex.Domain.Apps.Core.Scripting
             {
                 using (var combined = CancellationTokenSource.CreateLinkedTokenSource(cts.Token, ct))
                 {
-                    var tcs = new TaskCompletionSource<IJsonValue>();
+                    var context =
+                        CreateEngine<IJsonValue>(options, combined.Token)
+                            .Extend(vars, options)
+                            .Extend(extensions)
+                            .ExtendAsync(extensions);
 
-                    await using (combined.Token.Register(() => tcs.TrySetCanceled(combined.Token)))
+                    context.Engine.SetValue("complete", new Action<JsValue?>(value =>
                     {
-                        var context =
-                            CreateEngine(options)
-                                .Extend(vars, options)
-                                .Extend(extensions)
-                                .ExtendAsync(extensions, tcs.TrySetException, combined.Token);
+                        context.Complete(JsonMapper.Map(value));
+                    }));
 
-                        context.Engine.SetValue("complete", new Action<JsValue?>(value =>
-                        {
-                            tcs.TrySetResult(JsonMapper.Map(value));
-                        }));
-
-                        var result = Execute(context.Engine, script);
-
-                        if (!context.IsAsync)
-                        {
-                            tcs.TrySetResult(JsonMapper.Map(result));
-                        }
+                    var result = Execute(context.Engine, script);
 
-                        return await tcs.Task;
-                    }
+                    return await context.CompleteAsync() ?? JsonMapper.Map(result);
                 }
             }
         }
@@ -87,50 +78,33 @@ namespace Squidex.Domain.Apps.Core.Scripting
             {
                 using (var combined = CancellationTokenSource.CreateLinkedTokenSource(cts.Token, ct))
                 {
-                    var tcs = new TaskCompletionSource<ContentData>();
+                    var context =
+                        CreateEngine<ContentData>(options, combined.Token)
+                            .Extend(vars, options)
+                            .Extend(extensions)
+                            .ExtendAsync(extensions);
 
-                    await using (combined.Token.Register(() => tcs.TrySetCanceled(combined.Token)))
+                    context.Engine.SetValue("complete", new Action<JsValue?>(_ =>
                     {
-                        var context =
-                            CreateEngine(options)
-                                .Extend(vars, options)
-                                .Extend(extensions)
-                                .ExtendAsync(extensions, tcs.TrySetException, combined.Token);
+                        context.Complete(vars.Data!);
+                    }));
 
-                        context.Engine.SetValue("complete", new Action<JsValue?>(_ =>
-                        {
-                            tcs.TrySetResult(vars.Data!);
-                        }));
+                    context.Engine.SetValue("replace", new Action(() =>
+                    {
+                        var dataInstance = context.Engine.GetValue("ctx").AsObject().Get("data");
 
-                        context.Engine.SetValue("replace", new Action(() =>
+                        if (dataInstance != null && dataInstance.IsObject() && dataInstance.AsObject() is ContentDataObject data)
                         {
-                            var dataInstance = context.Engine.GetValue("ctx").AsObject().Get("data");
-
-                            if (dataInstance != null && dataInstance.IsObject() && dataInstance.AsObject() is ContentDataObject data)
+                            if (!context.IsCompleted && data.TryUpdate(out var modified))
                             {
-                                if (!tcs.Task.IsCompleted)
-                                {
-                                    if (data.TryUpdate(out var modified))
-                                    {
-                                        tcs.TrySetResult(modified);
-                                    }
-                                    else
-                                    {
-                                        tcs.TrySetResult(vars.Data!);
-                                    }
-                                }
+                                context.Complete(modified);
                             }
-                        }));
-
-                        Execute(context.Engine, script);
-
-                        if (!context.IsAsync)
-                        {
-                            tcs.TrySetResult(vars.Data!);
                         }
+                    }));
+
+                    Execute(context.Engine, script);
 
-                        return await tcs.Task;
-                    }
+                    return await context.CompleteAsync() ?? vars.Data!;
                 }
             }
         }
@@ -141,7 +115,7 @@ namespace Squidex.Domain.Apps.Core.Scripting
             Guard.NotNullOrEmpty(script);
 
             var context =
-                CreateEngine(options)
+                CreateEngine<object>(options, default)
                     .Extend(vars, options)
                     .Extend(extensions);
 
@@ -150,14 +124,24 @@ namespace Squidex.Domain.Apps.Core.Scripting
             return JsonMapper.Map(result);
         }
 
-        private ScriptExecutionContext CreateEngine(ScriptOptions options)
+        private ScriptExecutionContext<T> CreateEngine<T>(ScriptOptions options, CancellationToken ct) where T : class
         {
+            if (Debugger.IsAttached)
+            {
+                ct = default;
+            }
+
             var engine = new Engine(engineOptions =>
             {
                 engineOptions.AddObjectConverter(DefaultConverter.Instance);
                 engineOptions.SetReferencesResolver(NullPropagation.Instance);
                 engineOptions.Strict();
-                engineOptions.TimeoutInterval(timeoutScript);
+
+                if (!Debugger.IsAttached)
+                {
+                    engineOptions.TimeoutInterval(timeoutScript);
+                    engineOptions.CancellationToken(ct);
+                }
             });
 
             if (options.CanDisallow)
@@ -175,9 +159,7 @@ namespace Squidex.Domain.Apps.Core.Scripting
                 extension.Extend(engine);
             }
 
-            var context = new ScriptExecutionContext(engine);
-
-            return context;
+            return new ScriptExecutionContext<T>(engine, ct);
         }
 
         private JsValue Execute(Engine engine, string script)
@@ -212,7 +194,7 @@ namespace Squidex.Domain.Apps.Core.Scripting
 
         public void Describe(AddDescription describe, ScriptScope scope)
         {
-            if (scope == ScriptScope.Transform)
+            if (scope.HasFlag(ScriptScope.Transform) || scope.HasFlag(ScriptScope.ContentScript))
             {
                 describe(JsonType.Function, "replace()",
                     Resources.ScriptingReplace);

backend/src/Squidex.Domain.Apps.Core.Operations/Scripting/ScriptExecutionContext.cs

@@ -6,42 +6,96 @@
 // ==========================================================================
 
 using Jint;
+using Squidex.Infrastructure.Tasks;
 using Squidex.Text;
+using System.Diagnostics;
 
 namespace Squidex.Domain.Apps.Core.Scripting
 {
-    public sealed class ScriptExecutionContext : ScriptContext
+    public abstract class ScriptExecutionContext : ScriptContext
     {
-        private Func<Exception, bool>? completion;
-
         public Engine Engine { get; }
 
-        public CancellationToken CancellationToken { get; private set; }
+        protected ScriptExecutionContext(Engine engine)
+        {
+            Engine = engine;
+        }
+
+        public abstract void Schedule(Func<IScheduler, CancellationToken, Task> action);
+    }
+
+#pragma warning disable MA0048 // File name must match type name
+    public interface IScheduler
+#pragma warning restore MA0048 // File name must match type name
+    {
+        void Run(Action? action);
+
+        void Run<T>(Action<T>? action, T argument);
+    }
 
-        public bool IsAsync { get; private set; }
+    public sealed class ScriptExecutionContext<T> : ScriptExecutionContext, IScheduler where T : class
+    {
+        private readonly TaskCompletionSource<T?> tcs = new TaskCompletionSource<T?>();
+        private readonly CancellationToken cancellationToken;
+        private int pendingTasks;
 
-        internal ScriptExecutionContext(Engine engine)
+        public bool IsCompleted
         {
-            Engine = engine;
+            get => tcs.Task.Status == TaskStatus.RanToCompletion || tcs.Task.Status == TaskStatus.Faulted;
         }
 
-        public void MarkAsync()
+        internal ScriptExecutionContext(Engine engine, CancellationToken cancellationToken)
+            : base(engine)
         {
-            IsAsync = true;
+            this.cancellationToken = cancellationToken;
         }
 
-        public void Fail(Exception exception)
+        public Task<T?> CompleteAsync()
         {
-            completion?.Invoke(exception);
+            if (pendingTasks <= 0)
+            {
+                tcs.TrySetResult(null);
+            }
+
+            return tcs.Task.WithCancellation(cancellationToken);
+        }
+
+        public void Complete(T value)
+        {
+            tcs.TrySetResult(value);
         }
 
-        public ScriptExecutionContext ExtendAsync(IEnumerable<IJintExtension> extensions, Func<Exception, bool> completion,
-            CancellationToken ct)
+        public override void Schedule(Func<IScheduler, CancellationToken, Task> action)
         {
-            CancellationToken = ct;
+            if (IsCompleted)
+            {
+                return;
+            }
+
+            async Task ScheduleAsync()
+            {
+                try
+                {
+                    Interlocked.Increment(ref pendingTasks);
 
-            this.completion = completion;
+                    await action(this, cancellationToken);
 
+                    if (Interlocked.Decrement(ref pendingTasks) <= 0)
+                    {
+                        tcs.TrySetResult(null);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    tcs.TrySetException(ex);
+                }
+            }
+
+            ScheduleAsync().Forget();
+        }
+
+        public ScriptExecutionContext<T> ExtendAsync(IEnumerable<IJintExtension> extensions)
+        {
             foreach (var extension in extensions)
             {
                 extension.ExtendAsync(this);
@@ -50,7 +104,7 @@ namespace Squidex.Domain.Apps.Core.Scripting
             return this;
         }
 
-        public ScriptExecutionContext Extend(IEnumerable<IJintExtension> extensions)
+        public ScriptExecutionContext<T> Extend(IEnumerable<IJintExtension> extensions)
         {
             foreach (var extension in extensions)
             {
@@ -60,7 +114,7 @@ namespace Squidex.Domain.Apps.Core.Scripting
             return this;
         }
 
-        public ScriptExecutionContext Extend(ScriptVars vars, ScriptOptions options)
+        public ScriptExecutionContext<T> Extend(ScriptVars vars, ScriptOptions options)
         {
             var engine = Engine;
 
@@ -95,5 +149,27 @@ namespace Squidex.Domain.Apps.Core.Scripting
 
             return this;
         }
+
+        void IScheduler.Run(Action? action)
+        {
+            if (IsCompleted || action == null)
+            {
+                return;
+            }
+
+            Engine.ResetConstraints();
+            action();
+        }
+
+        void IScheduler.Run<TArg>(Action<TArg>? action, TArg argument)
+        {
+            if (IsCompleted || action == null)
+            {
+                return;
+            }
+
+            Engine.ResetConstraints();
+            action(argument);
+        }
     }
 }

backend/src/Squidex.Domain.Apps.Entities/AppTag.cs

@@ -1,22 +0,0 @@
-// ==========================================================================
-//  Squidex Headless CMS
-// ==========================================================================
-//  Copyright (c) Squidex UG (haftungsbeschraenkt)
-//  All rights reserved. Licensed under the MIT license.
-// ==========================================================================
-
-using Fluid.Tags;
-using Microsoft.Extensions.DependencyInjection;
-
-namespace Squidex.Domain.Apps.Entities
-{
-    internal abstract class AppTag : ArgumentsTag
-    {
-        protected IAppProvider AppProvider { get; }
-
-        protected AppTag(IServiceProvider serviceProvider)
-        {
-            AppProvider = serviceProvider.GetRequiredService<IAppProvider>();
-        }
-    }
-}

backend/src/Squidex.Domain.Apps.Entities/Assets/AssetExtensions.cs

@@ -5,10 +5,6 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System.Text;
-using Squidex.Infrastructure;
-using Squidex.Infrastructure.ObjectPool;
-
 namespace Squidex.Domain.Apps.Entities.Assets
 {
     public static class AssetExtensions
@@ -24,29 +20,5 @@ namespace Squidex.Domain.Apps.Entities.Assets
         {
             return builder.WithBoolean(HeaderNoEnrichment, value);
         }
-
-        public static async Task<string> GetTextAsync(this IAssetFileStore assetFileStore, DomainId appId, DomainId id, long fileVersion, string? encoding)
-        {
-            using (var stream = DefaultPools.MemoryStream.GetStream())
-            {
-                await assetFileStore.DownloadAsync(appId, id, fileVersion, null, stream);
-
-                stream.Position = 0;
-
-                var bytes = stream.ToArray();
-
-                switch (encoding?.ToLowerInvariant())
-                {
-                    case "base64":
-                        return Convert.ToBase64String(bytes);
-                    case "ascii":
-                        return Encoding.ASCII.GetString(bytes);
-                    case "unicode":
-                        return Encoding.Unicode.GetString(bytes);
-                    default:
-                        return Encoding.UTF8.GetString(bytes);
-                }
-            }
-        }
     }
 }

backend/src/Squidex.Domain.Apps.Entities/Assets/AssetsFluidExtension.cs

@@ -8,8 +8,11 @@
 using System.Text.Encodings.Web;
 using Fluid;
 using Fluid.Ast;
+using Fluid.Tags;
 using Fluid.Values;
 using Microsoft.Extensions.DependencyInjection;
+using Squidex.Assets;
+using Squidex.Domain.Apps.Core.Assets;
 using Squidex.Domain.Apps.Core.Rules.EnrichedEvents;
 using Squidex.Domain.Apps.Core.Templates;
 using Squidex.Domain.Apps.Core.ValidateContent;
@@ -21,32 +24,33 @@ namespace Squidex.Domain.Apps.Entities.Assets
     {
         private static readonly FluidValue ErrorNullAsset = FluidValue.Create(null);
         private static readonly FluidValue ErrorNoAsset = new StringValue("NoAsset");
+        private static readonly FluidValue ErrorNoImage = new StringValue("NoImage");
         private static readonly FluidValue ErrorTooBig = new StringValue("ErrorTooBig");
         private readonly IServiceProvider serviceProvider;
 
-        private sealed class AssetTag : AppTag
+        private sealed class AssetTag : ArgumentsTag
         {
-            private readonly IAssetQueryService assetQuery;
+            private readonly IServiceProvider serviceProvider;
 
             public AssetTag(IServiceProvider serviceProvider)
-                : base(serviceProvider)
             {
-                assetQuery = serviceProvider.GetRequiredService<IAssetQueryService>();
+                this.serviceProvider = serviceProvider;
             }
 
-            public override async ValueTask<Completion> WriteToAsync(TextWriter writer, TextEncoder encoder, TemplateContext context, FilterArgument[] arguments)
+            public override async ValueTask<Completion> WriteToAsync(TextWriter writer,
+                TextEncoder encoder, TemplateContext context, FilterArgument[] arguments)
             {
                 if (arguments.Length == 2 && context.GetValue("event")?.ToObjectValue() is EnrichedEvent enrichedEvent)
                 {
                     var id = await arguments[1].Expression.EvaluateAsync(context);
 
-                    var content = await ResolveAssetAsync(AppProvider, assetQuery, enrichedEvent.AppId.Id, id);
+                    var asset = await ResolveAssetAsync(serviceProvider, enrichedEvent.AppId.Id, id);
 
-                    if (content != null)
+                    if (asset != null)
                     {
                         var name = (await arguments[0].Expression.EvaluateAsync(context)).ToStringValue();
 
-                        context.SetValue(name, content);
+                        context.SetValue(name, asset);
                     }
                 }
 
@@ -75,15 +79,11 @@ namespace Squidex.Domain.Apps.Entities.Assets
 
         private void AddAssetFilter()
         {
-            var appProvider = serviceProvider.GetRequiredService<IAppProvider>();
-
-            var assetQuery = serviceProvider.GetRequiredService<IAssetQueryService>();
-
             TemplateContext.GlobalFilters.AddAsyncFilter("asset", async (input, arguments, context) =>
             {
                 if (context.GetValue("event")?.ToObjectValue() is EnrichedEvent enrichedEvent)
                 {
-                    var asset = await ResolveAssetAsync(appProvider, assetQuery, enrichedEvent.AppId.Id, input);
+                    var asset = await ResolveAssetAsync(serviceProvider, enrichedEvent.AppId.Id, input);
 
                     if (asset == null)
                     {
@@ -99,8 +99,6 @@ namespace Squidex.Domain.Apps.Entities.Assets
 
         private void AddAssetTextFilter()
         {
-            var assetFileStore = serviceProvider.GetRequiredService<IAssetFileStore>();
-
             TemplateContext.GlobalFilters.AddAsyncFilter("assetText", async (input, arguments, context) =>
             {
                 if (input is not ObjectValue objectValue)
@@ -108,15 +106,17 @@ namespace Squidex.Domain.Apps.Entities.Assets
                     return ErrorNoAsset;
                 }
 
-                async Task<FluidValue> ResolveAssetText(DomainId appId, DomainId id, long fileSize, long fileVersion)
+                async Task<FluidValue> ResolveAssetTextAsync(AssetRef asset)
                 {
-                    if (fileSize > 256_000)
+                    if (asset.FileSize > 256_000)
                     {
                         return ErrorTooBig;
                     }
 
+                    var assetFileStore = serviceProvider.GetRequiredService<IAssetFileStore>();
+
                     var encoding = arguments.At(0).ToStringValue()?.ToUpperInvariant();
-                    var encoded = await assetFileStore.GetTextAsync(appId, id, fileVersion, encoding);
+                    var encoded = await asset.GetTextAsync(encoding, assetFileStore, default);
 
                     return new StringValue(encoded);
                 }
@@ -124,10 +124,64 @@ namespace Squidex.Domain.Apps.Entities.Assets
                 switch (objectValue.ToObjectValue())
                 {
                     case IAssetEntity asset:
-                        return await ResolveAssetText(asset.AppId.Id, asset.Id, asset.FileSize, asset.FileVersion);
+                        return await ResolveAssetTextAsync(asset.ToRef());
+
+                    case EnrichedAssetEvent @event:
+                        return await ResolveAssetTextAsync(@event.ToRef());
+                }
+
+                return ErrorNoAsset;
+            });
+
+            TemplateContext.GlobalFilters.AddAsyncFilter("assetBlurHash", async (input, arguments, context) =>
+            {
+                if (input is not ObjectValue objectValue)
+                {
+                    return ErrorNoAsset;
+                }
+
+                async Task<FluidValue> ResolveAssetHashAsync(AssetRef asset)
+                {
+                    if (asset.FileSize > 512_000)
+                    {
+                        return ErrorTooBig;
+                    }
+
+                    if (asset.Type != AssetType.Image)
+                    {
+                        return ErrorNoImage;
+                    }
+
+                    var options = new BlurOptions();
+
+                    var arg0 = arguments.At(0);
+                    var arg1 = arguments.At(1);
+
+                    if (arg0.Type == FluidValues.Number)
+                    {
+                        options.ComponentX = (int)arg0.ToNumberValue();
+                    }
+
+                    if (arg1.Type == FluidValues.Number)
+                    {
+                        options.ComponentX = (int)arg1.ToNumberValue();
+                    }
+
+                    var assetFileStore = serviceProvider.GetRequiredService<IAssetFileStore>();
+                    var assetThumbnailGenerator = serviceProvider.GetRequiredService<IAssetThumbnailGenerator>();
+
+                    var blur = await asset.GetBlurHashAsync(options, assetFileStore, assetThumbnailGenerator, default);
+
+                    return new StringValue(blur);
+                }
+
+                switch (objectValue.ToObjectValue())
+                {
+                    case IAssetEntity asset:
+                        return await ResolveAssetHashAsync(asset.ToRef());
 
                     case EnrichedAssetEvent @event:
-                        return await ResolveAssetText(@event.AppId.Id, @event.Id, @event.FileSize, @event.FileVersion);
+                        return await ResolveAssetHashAsync(@event.ToRef());
                 }
 
                 return ErrorNoAsset;
@@ -139,8 +193,10 @@ namespace Squidex.Domain.Apps.Entities.Assets
             factory.RegisterTag("asset", new AssetTag(serviceProvider));
         }
 
-        private static async Task<IAssetEntity?> ResolveAssetAsync(IAppProvider appProvider, IAssetQueryService assetQuery, DomainId appId, FluidValue id)
+        private static async Task<IAssetEntity?> ResolveAssetAsync(IServiceProvider serviceProvider, DomainId appId, FluidValue id)
         {
+            var appProvider = serviceProvider.GetRequiredService<IAppProvider>();
+
             var app = await appProvider.GetAppAsync(appId);
 
             if (app == null)
@@ -150,6 +206,8 @@ namespace Squidex.Domain.Apps.Entities.Assets
 
             var domainId = DomainId.Create(id.ToStringValue());
 
+            var assetQuery = serviceProvider.GetRequiredService<IAssetQueryService>();
+
             var requestContext =
                 Context.Admin(app).Clone(b => b
                     .WithoutTotal());

backend/src/Squidex.Domain.Apps.Entities/Assets/AssetsJintExtension.cs

@@ -11,19 +11,21 @@ using Jint.Native;
 using Jint.Runtime;
 using Jint.Runtime.Interop;
 using Microsoft.Extensions.DependencyInjection;
+using Squidex.Assets;
+using Squidex.Domain.Apps.Core.Assets;
 using Squidex.Domain.Apps.Core.Rules.EnrichedEvents;
 using Squidex.Domain.Apps.Core.Scripting;
 using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Properties;
 using Squidex.Infrastructure;
-using Squidex.Infrastructure.Tasks;
 
 namespace Squidex.Domain.Apps.Entities.Assets
 {
     public sealed class AssetsJintExtension : IJintExtension, IScriptDescriptor
     {
         private delegate void GetAssetsDelegate(JsValue references, Action<JsValue> callback);
-        private delegate void GetAssetTextDelegate(JsValue references, Action<JsValue> callback, JsValue encoding);
+        private delegate void GetAssetTextDelegate(JsValue asset, Action<JsValue> callback, JsValue? encoding);
+        private delegate void GetBlurHashDelegate(JsValue asset, Action<JsValue> callback, JsValue? componentX, JsValue? componentY);
         private readonly IServiceProvider serviceProvider;
 
         public AssetsJintExtension(IServiceProvider serviceProvider)
@@ -34,6 +36,7 @@ namespace Squidex.Domain.Apps.Entities.Assets
         public void ExtendAsync(ScriptExecutionContext context)
         {
             AddAssetText(context);
+            AddAssetBlurHash(context);
             AddAsset(context);
         }
 
@@ -45,8 +48,11 @@ namespace Squidex.Domain.Apps.Entities.Assets
             describe(JsonType.Function, "getAsset(ids, callback)",
                 Resources.ScriptingGetAsset);
 
-            describe(JsonType.Function, "getAssetText(asset, callback, encoding)",
+            describe(JsonType.Function, "getAssetText(asset, callback, encoding?)",
                 Resources.ScriptingGetAssetText);
+
+            describe(JsonType.Function, "getAssetBlurHash(asset, callback, x?, y?)",
+                Resources.ScriptingGetBlurHash);
         }
 
         private void AddAsset(ScriptExecutionContext context)
@@ -61,138 +67,193 @@ namespace Squidex.Domain.Apps.Entities.Assets
                 return;
             }
 
-            var action = new GetAssetsDelegate((references, callback) => GetAssets(context, appId, user, references, callback));
+            var getAssets = new GetAssetsDelegate((references, callback) =>
+            {
+                GetAssets(context, appId, user, references, callback);
+            });
 
-            context.Engine.SetValue("getAsset", action);
-            context.Engine.SetValue("getAssets", action);
+            context.Engine.SetValue("getAsset", getAssets);
+            context.Engine.SetValue("getAssets", getAssets);
         }
 
         private void AddAssetText(ScriptExecutionContext context)
         {
-            var action = new GetAssetTextDelegate((references, callback, encoding) => GetText(context, references, callback, encoding));
+            var action = new GetAssetTextDelegate((references, callback, encoding) =>
+            {
+                GetText(context, references, callback, encoding);
+            });
 
             context.Engine.SetValue("getAssetText", action);
         }
 
-        private void GetText(ScriptExecutionContext context, JsValue input, Action<JsValue> callback, JsValue encoding)
+        private void AddAssetBlurHash(ScriptExecutionContext context)
         {
-            GetTextAsync(context, input, callback, encoding).Forget();
+            var getBlurHash = new GetBlurHashDelegate((input, callback, componentX, componentY) =>
+            {
+                GetBlurHash(context, input, callback, componentX, componentY);
+            });
+
+            context.Engine.SetValue("getAssetBlurHash", getBlurHash);
         }
 
-        private async Task GetTextAsync(ScriptExecutionContext context, JsValue input, Action<JsValue> callback, JsValue encoding)
+        private void GetText(ScriptExecutionContext context, JsValue input, Action<JsValue> callback, JsValue? encoding)
         {
             Guard.NotNull(callback);
 
-            if (input is not ObjectWrapper objectWrapper)
+            context.Schedule(async (scheduler, ct) =>
             {
-                callback(JsValue.FromObject(context.Engine, "ErrorNoAsset"));
-                return;
-            }
-
-            async Task ResolveAssetText(DomainId appId, DomainId id, long fileSize, long fileVersion)
-            {
-                if (fileSize > 256_000)
+                if (input is not ObjectWrapper objectWrapper)
                 {
-                    callback(JsValue.FromObject(context.Engine, "ErrorTooBig"));
+                    scheduler.Run(callback, JsValue.FromObject(context.Engine, "ErrorNoAsset"));
                     return;
                 }
 
-                context.MarkAsync();
-
-                try
+                async Task ResolveAssetText(AssetRef asset)
                 {
-                    var assetFileStore = serviceProvider.GetRequiredService<IAssetFileStore>();
-
-                    var encoded = await assetFileStore.GetTextAsync(appId, id, fileVersion, encoding?.ToString());
+                    if (asset.FileSize > 256_000)
+                    {
+                        scheduler.Run(callback, JsValue.FromObject(context.Engine, "ErrorTooBig"));
+                        return;
+                    }
 
-                    // Reset the time contraints and other constraints so that our awaiting does not count as script time.
-                    context.Engine.ResetConstraints();
+                    var assetFileStore = serviceProvider.GetRequiredService<IAssetFileStore>();
+                    try
+                    {
+                        var text = await asset.GetTextAsync(encoding?.ToString(), assetFileStore, ct);
 
-                    callback(JsValue.FromObject(context.Engine, encoded));
+                        scheduler.Run(callback, JsValue.FromObject(context.Engine, text));
+                    }
+                    catch
+                    {
+                        scheduler.Run(callback, JsValue.Null);
+                    }
                 }
-                catch (Exception ex)
+
+                switch (objectWrapper.Target)
                 {
-                    context.Fail(ex);
+                    case IAssetEntity asset:
+                        await ResolveAssetText(asset.ToRef());
+                        break;
+
+                    case EnrichedAssetEvent e:
+                        await ResolveAssetText(e.ToRef());
+                        break;
+
+                    default:
+                        scheduler.Run(callback, JsValue.FromObject(context.Engine, "ErrorNoAsset"));
+                        break;
                 }
-            }
+            });
+        }
+
+        private void GetBlurHash(ScriptExecutionContext context, JsValue input, Action<JsValue> callback, JsValue? componentX, JsValue? componentY)
+        {
+            Guard.NotNull(callback);
 
-            switch (objectWrapper.Target)
+            context.Schedule(async (scheduler, ct) =>
             {
-                case IAssetEntity asset:
-                    await ResolveAssetText(asset.AppId.Id, asset.Id, asset.FileSize, asset.FileVersion);
+                if (input is not ObjectWrapper objectWrapper)
+                {
+                    scheduler.Run(callback, JsValue.FromObject(context.Engine, "ErrorNoAsset"));
                     return;
+                }
 
-                case EnrichedAssetEvent @event:
-                    await ResolveAssetText(@event.AppId.Id, @event.Id, @event.FileSize, @event.FileVersion);
-                    return;
-            }
+                async Task ResolveHashAsync(AssetRef asset)
+                {
+                    if (asset.FileSize > 512_000 || asset.Type != AssetType.Image)
+                    {
+                        scheduler.Run(callback, JsValue.Null);
+                        return;
+                    }
 
-            callback(JsValue.FromObject(context.Engine, "ErrorNoAsset"));
-        }
+                    var options = new BlurOptions();
 
-        private void GetAssets(ScriptExecutionContext context, DomainId appId, ClaimsPrincipal user, JsValue references, Action<JsValue> callback)
-        {
-            GetReferencesAsync(context, appId, user, references, callback).Forget();
+                    if (componentX?.IsNumber() == true)
+                    {
+                        options.ComponentX = (int)componentX.AsNumber();
+                    }
+
+                    if (componentY?.IsNumber() == true)
+                    {
+                        options.ComponentX = (int)componentX.AsNumber();
+                    }
+
+                    var assetThumbnailGenerator = serviceProvider.GetRequiredService<IAssetThumbnailGenerator>();
+                    var assetFileStore = serviceProvider.GetRequiredService<IAssetFileStore>();
+                    try
+                    {
+                        var hash = await asset.GetBlurHashAsync(options, assetFileStore, assetThumbnailGenerator, ct);
+
+                        scheduler.Run(callback, JsValue.FromObject(context.Engine, hash));
+                    }
+                    catch
+                    {
+                        scheduler.Run(callback, JsValue.Null);
+                    }
+                }
+
+                switch (objectWrapper.Target)
+                {
+                    case IAssetEntity asset:
+                        await ResolveHashAsync(asset.ToRef());
+                        break;
+
+                    case EnrichedAssetEvent @event:
+                        await ResolveHashAsync(@event.ToRef());
+                        break;
+
+                    default:
+                        scheduler.Run(callback, JsValue.FromObject(context.Engine, "ErrorNoAsset"));
+                        break;
+                }
+            });
         }
 
-        private async Task GetReferencesAsync(ScriptExecutionContext context, DomainId appId, ClaimsPrincipal user, JsValue references, Action<JsValue> callback)
+        private void GetAssets(ScriptExecutionContext context, DomainId appId, ClaimsPrincipal user, JsValue references, Action<JsValue> callback)
         {
             Guard.NotNull(callback);
 
-            var ids = new List<DomainId>();
-
-            if (references.IsString())
+            context.Schedule(async (scheduler, ct) =>
             {
-                ids.Add(DomainId.Create(references.ToString()));
-            }
-            else if (references.IsArray())
-            {
-                foreach (var value in references.AsArray())
+                var ids = references.ToIds();
+
+                if (ids.Count == 0)
                 {
-                    if (value.IsString())
-                    {
-                        ids.Add(DomainId.Create(value.ToString()));
-                    }
+                    var emptyAssets = Array.Empty<IEnrichedAssetEntity>();
+
+                    scheduler.Run(callback, JsValue.FromObject(context.Engine, emptyAssets));
+                    return;
                 }
-            }
 
-            if (ids.Count == 0)
-            {
-                var emptyAssets = Array.Empty<IEnrichedAssetEntity>();
+                var app = await GetAppAsync(appId, ct);
 
-                callback(JsValue.FromObject(context.Engine, emptyAssets));
-                return;
-            }
+                if (app == null)
+                {
+                    var emptyAssets = Array.Empty<IEnrichedAssetEntity>();
 
-            context.MarkAsync();
+                    scheduler.Run(callback, JsValue.FromObject(context.Engine, emptyAssets));
+                    return;
+                }
 
-            try
-            {
-                var app = await GetAppAsync(appId);
+                var assetQuery = serviceProvider.GetRequiredService<IAssetQueryService>();
 
                 var requestContext =
                     new Context(user, app).Clone(b => b
                         .WithoutTotal());
 
-                var assetQuery = serviceProvider.GetRequiredService<IAssetQueryService>();
-                var assetItems = await assetQuery.QueryAsync(requestContext, null, Q.Empty.WithIds(ids), context.CancellationToken);
-
-                // Reset the time contraints and other constraints so that our awaiting does not count as script time.
-                context.Engine.ResetConstraints();
+                var assets = await assetQuery.QueryAsync(requestContext, null, Q.Empty.WithIds(ids), ct);
 
-                callback(JsValue.FromObject(context.Engine, assetItems.ToArray()));
-            }
-            catch (Exception ex)
-            {
-                context.Fail(ex);
-            }
+                scheduler.Run(callback, JsValue.FromObject(context.Engine, assets.ToArray()));
+                return;
+            });
         }
 
-        private async Task<IAppEntity> GetAppAsync(DomainId appId)
+        private async Task<IAppEntity> GetAppAsync(DomainId appId,
+            CancellationToken ct)
         {
             var appProvider = serviceProvider.GetRequiredService<IAppProvider>();
 
-            var app = await appProvider.GetAppAsync(appId);
+            var app = await appProvider.GetAppAsync(appId, false, ct);
 
             if (app == null)
             {

backend/src/Squidex.Domain.Apps.Entities/Assets/Transformations.cs

@@ -0,0 +1,92 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Text;
+using Squidex.Assets;
+using Squidex.Domain.Apps.Core.Assets;
+using Squidex.Domain.Apps.Core.Rules.EnrichedEvents;
+using Squidex.Infrastructure;
+using Squidex.Infrastructure.ObjectPool;
+
+#pragma warning disable MA0048 // File name must match type name
+#pragma warning disable SA1313 // Parameter names should begin with lower-case letter
+
+namespace Squidex.Domain.Apps.Entities.Assets
+{
+    public record struct AssetRef(
+        DomainId AppId,
+        DomainId Id,
+        long FileVersion,
+        long FileSize,
+        string MimeType,
+        AssetType Type);
+
+    public static class Transformations
+    {
+        public static AssetRef ToRef(this EnrichedAssetEvent @event)
+        {
+            return new AssetRef(
+                @event.AppId.Id,
+                @event.Id,
+                @event.FileVersion,
+                @event.FileSize,
+                @event.MimeType,
+                @event.AssetType);
+        }
+
+        public static AssetRef ToRef(this IAssetEntity asset)
+        {
+            return new AssetRef(
+                asset.AppId.Id,
+                asset.Id,
+                asset.FileVersion,
+                asset.FileSize,
+                asset.MimeType,
+                asset.Type);
+        }
+
+        public static async Task<string> GetTextAsync(this AssetRef asset, string? encoding,
+            IAssetFileStore assetFileStore,
+            CancellationToken ct = default)
+        {
+            using (var stream = DefaultPools.MemoryStream.GetStream())
+            {
+                await assetFileStore.DownloadAsync(asset.AppId, asset.Id, asset.FileVersion, null, stream, default, ct);
+
+                stream.Position = 0;
+
+                var bytes = stream.ToArray();
+
+                switch (encoding?.ToLowerInvariant())
+                {
+                    case "base64":
+                        return Convert.ToBase64String(bytes);
+                    case "ascii":
+                        return Encoding.ASCII.GetString(bytes);
+                    case "unicode":
+                        return Encoding.Unicode.GetString(bytes);
+                    default:
+                        return Encoding.UTF8.GetString(bytes);
+                }
+            }
+        }
+
+        public static async Task<string?> GetBlurHashAsync(this AssetRef asset, BlurOptions options,
+            IAssetFileStore assetFileStore,
+            IAssetThumbnailGenerator thumbnailGenerator, CancellationToken ct = default)
+        {
+            using (var stream = DefaultPools.MemoryStream.GetStream())
+            {
+                await assetFileStore.DownloadAsync(asset.AppId, asset.Id, asset.FileVersion, null, stream, default, ct);
+
+                stream.Position = 0;
+
+                return await thumbnailGenerator.ComputeBlurHashAsync(stream, asset.MimeType, options, ct);
+            }
+        }
+    }
+}

backend/src/Squidex.Domain.Apps.Entities/Contents/Counter/CounterJintExtension.cs

@@ -5,6 +5,7 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using Jint.Native;
 using Orleans;
 using Squidex.Domain.Apps.Core.Scripting;
 using Squidex.Domain.Apps.Entities.Properties;
@@ -15,6 +16,8 @@ namespace Squidex.Domain.Apps.Entities.Contents.Counter
 {
     public sealed class CounterJintExtension : IJintExtension, IScriptDescriptor
     {
+        private delegate long CounterReset(string name, long value = 0);
+        private delegate void CounterResetV2(string name, Action<JsValue>? callback = null, long value = 0);
         private readonly IGrainFactory grainFactory;
 
         public CounterJintExtension(IGrainFactory grainFactory)
@@ -24,20 +27,46 @@ namespace Squidex.Domain.Apps.Entities.Contents.Counter
 
         public void Extend(ScriptExecutionContext context)
         {
-            if (context.TryGetValue<DomainId>("appId", out var appId))
+            if (!context.TryGetValue<DomainId>("appId", out var appId))
             {
-                var engine = context.Engine;
+                return;
+            }
 
-                engine.SetValue("incrementCounter", new Func<string, long>(name =>
-                {
-                    return Increment(appId, name);
-                }));
+            var increment = new Func<string, long>(name =>
+            {
+                return Increment(appId, name);
+            });
 
-                engine.SetValue("resetCounter", new Func<string, long, long>((name, value) =>
-                {
-                    return Reset(appId, name, value);
-                }));
+            context.Engine.SetValue("incrementCounter", increment);
+
+            var reset = new CounterReset((name, value) =>
+            {
+                return Reset(appId, name, value);
+            });
+
+            context.Engine.SetValue("resetCounter", reset);
+        }
+
+        public void ExtendAsync(ScriptExecutionContext context)
+        {
+            if (!context.TryGetValue<DomainId>("appId", out var appId))
+            {
+                return;
             }
+
+            var increment = new Action<string, Action<JsValue>>((name, callback) =>
+            {
+                IncrementV2(context, appId, name, callback);
+            });
+
+            context.Engine.SetValue("incrementCounterV2", increment);
+
+            var reset = new CounterResetV2((name, callback, value) =>
+            {
+                ResetV2(context, appId, name, callback, value);
+            });
+
+            context.Engine.SetValue("resetCounterV2", reset);
         }
 
         public void Describe(AddDescription describe, ScriptScope scope)
@@ -45,8 +74,14 @@ namespace Squidex.Domain.Apps.Entities.Contents.Counter
             describe(JsonType.Function, "incrementCounter(name)",
                 Resources.ScriptingIncrementCounter);
 
-            describe(JsonType.Function, "resetCounter(name, value)",
+            describe(JsonType.Function, "incrementCounterV2(name, callback?)",
+                Resources.ScriptingIncrementCounterV2);
+
+            describe(JsonType.Function, "resetCounter(name, value?)",
                 Resources.ScriptingResetCounter);
+
+            describe(JsonType.Function, "resetCounter(name, callback?, value?)",
+                Resources.ScriptingResetCounterV2);
         }
 
         private long Increment(DomainId appId, string name)
@@ -56,11 +91,41 @@ namespace Squidex.Domain.Apps.Entities.Contents.Counter
             return AsyncHelper.Sync(() => grain.IncrementAsync(name));
         }
 
+        private void IncrementV2(ScriptExecutionContext context, DomainId appId, string name, Action<JsValue> callback)
+        {
+            context.Schedule(async (scheduler, ct) =>
+            {
+                var grain = grainFactory.GetGrain<ICounterGrain>(appId.ToString());
+
+                var result = await grain.IncrementAsync(name);
+
+                if (callback != null)
+                {
+                    scheduler.Run(callback, JsValue.FromObject(context.Engine, result));
+                }
+            });
+        }
+
         private long Reset(DomainId appId, string name, long value)
         {
             var grain = grainFactory.GetGrain<ICounterGrain>(appId.ToString());
 
             return AsyncHelper.Sync(() => grain.ResetAsync(name, value));
         }
+
+        private void ResetV2(ScriptExecutionContext context, DomainId appId, string name, Action<JsValue>? callback, long value)
+        {
+            context.Schedule(async (scheduler, ct) =>
+            {
+                var grain = grainFactory.GetGrain<ICounterGrain>(appId.ToString());
+
+                var result = await grain.ResetAsync(name, value);
+
+                if (callback != null)
+                {
+                    scheduler.Run(callback, JsValue.FromObject(context.Engine, result));
+                }
+            });
+        }
     }
 }

backend/src/Squidex.Domain.Apps.Entities/Contents/ReferencesFluidExtension.cs

@@ -8,6 +8,7 @@
 using System.Text.Encodings.Web;
 using Fluid;
 using Fluid.Ast;
+using Fluid.Tags;
 using Fluid.Values;
 using Microsoft.Extensions.DependencyInjection;
 using Squidex.Domain.Apps.Core.Rules.EnrichedEvents;
@@ -23,23 +24,23 @@ namespace Squidex.Domain.Apps.Entities.Contents
         private static readonly FluidValue ErrorNullReference = FluidValue.Create(null);
         private readonly IServiceProvider serviceProvider;
 
-        private sealed class ReferenceTag : AppTag
+        private sealed class ReferenceTag : ArgumentsTag
         {
-            private readonly IContentQueryService contentQuery;
+            private readonly IServiceProvider serviceProvider;
 
             public ReferenceTag(IServiceProvider serviceProvider)
-                : base(serviceProvider)
             {
-                contentQuery = serviceProvider.GetRequiredService<IContentQueryService>();
+                this.serviceProvider = serviceProvider;
             }
 
-            public override async ValueTask<Completion> WriteToAsync(TextWriter writer, TextEncoder encoder, TemplateContext context, FilterArgument[] arguments)
+            public override async ValueTask<Completion> WriteToAsync(TextWriter writer,
+                TextEncoder encoder, TemplateContext context, FilterArgument[] arguments)
             {
                 if (arguments.Length == 2 && context.GetValue("event")?.ToObjectValue() is EnrichedEvent enrichedEvent)
                 {
                     var id = await arguments[1].Expression.EvaluateAsync(context);
 
-                    var content = await ResolveContentAsync(AppProvider, contentQuery, enrichedEvent.AppId.Id, id);
+                    var content = await ResolveContentAsync(serviceProvider, enrichedEvent.AppId.Id, id);
 
                     if (content != null)
                     {
@@ -72,15 +73,11 @@ namespace Squidex.Domain.Apps.Entities.Contents
 
         private void AddReferenceFilter()
         {
-            var appProvider = serviceProvider.GetRequiredService<IAppProvider>();
-
-            var contentQuery = serviceProvider.GetRequiredService<IContentQueryService>();
-
             TemplateContext.GlobalFilters.AddAsyncFilter("reference", async (input, arguments, context) =>
             {
                 if (context.GetValue("event")?.ToObjectValue() is EnrichedEvent enrichedEvent)
                 {
-                    var content = await ResolveContentAsync(appProvider, contentQuery, enrichedEvent.AppId.Id, input);
+                    var content = await ResolveContentAsync(serviceProvider, enrichedEvent.AppId.Id, input);
 
                     if (content == null)
                     {
@@ -99,8 +96,10 @@ namespace Squidex.Domain.Apps.Entities.Contents
             factory.RegisterTag("reference", new ReferenceTag(serviceProvider));
         }
 
-        private static async Task<IContentEntity?> ResolveContentAsync(IAppProvider appProvider, IContentQueryService contentQuery, DomainId appId, FluidValue id)
+        private static async Task<IContentEntity?> ResolveContentAsync(IServiceProvider serviceProvider, DomainId appId, FluidValue id)
         {
+            var appProvider = serviceProvider.GetRequiredService<IAppProvider>();
+
             var app = await appProvider.GetAppAsync(appId);
 
             if (app == null)
@@ -109,17 +108,18 @@ namespace Squidex.Domain.Apps.Entities.Contents
             }
 
             var domainId = DomainId.Create(id.ToStringValue());
-            var domainIds = new List<DomainId> { domainId };
+
+            var contentQuery = serviceProvider.GetRequiredService<IContentQueryService>();
 
             var requestContext =
                 Context.Admin(app).Clone(b => b
+                    .WithoutContentEnrichment()
                     .WithUnpublished()
                     .WithoutTotal());
 
-            var contents = await contentQuery.QueryAsync(requestContext, Q.Empty.WithIds(domainIds));
-            var content = contents.FirstOrDefault();
+            var contents = await contentQuery.QueryAsync(requestContext, Q.Empty.WithIds(domainId));
 
-            return content;
+            return contents.FirstOrDefault();
         }
     }
 }

backend/src/Squidex.Domain.Apps.Entities/Contents/ReferencesJintExtension.cs

@@ -6,7 +6,6 @@
 // ==========================================================================
 
 using System.Security.Claims;
-using Jint;
 using Jint.Native;
 using Jint.Runtime;
 using Microsoft.Extensions.DependencyInjection;
@@ -14,7 +13,6 @@ using Squidex.Domain.Apps.Core.Scripting;
 using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Properties;
 using Squidex.Infrastructure;
-using Squidex.Infrastructure.Tasks;
 
 namespace Squidex.Domain.Apps.Entities.Contents
 {
@@ -40,7 +38,10 @@ namespace Squidex.Domain.Apps.Entities.Contents
                 return;
             }
 
-            var action = new GetReferencesDelegate((references, callback) => GetReferences(context, appId, user, references, callback));
+            var action = new GetReferencesDelegate((references, callback) =>
+            {
+                GetReferences(context, appId, user, references, callback);
+            });
 
             context.Engine.SetValue("getReference", action);
             context.Engine.SetValue("getReferences", action);
@@ -56,44 +57,32 @@ namespace Squidex.Domain.Apps.Entities.Contents
         }
 
         private void GetReferences(ScriptExecutionContext context, DomainId appId, ClaimsPrincipal user, JsValue references, Action<JsValue> callback)
-        {
-            GetReferencesAsync(context, appId, user, references, callback).Forget();
-        }
-
-        private async Task GetReferencesAsync(ScriptExecutionContext context, DomainId appId, ClaimsPrincipal user, JsValue references, Action<JsValue> callback)
         {
             Guard.NotNull(callback);
 
-            var ids = new List<DomainId>();
-
-            if (references.IsString())
-            {
-                ids.Add(DomainId.Create(references.ToString()));
-            }
-            else if (references.IsArray())
+            context.Schedule(async (scheduler, ct) =>
             {
-                foreach (var value in references.AsArray())
+                var ids = references.ToIds();
+
+                if (ids.Count == 0)
                 {
-                    if (value.IsString())
-                    {
-                        ids.Add(DomainId.Create(value.ToString()));
-                    }
+                    var emptyContents = Array.Empty<IEnrichedContentEntity>();
+
+                    scheduler.Run(callback, JsValue.FromObject(context.Engine, emptyContents));
+                    return;
                 }
-            }
 
-            if (ids.Count == 0)
-            {
-                var emptyContents = Array.Empty<IEnrichedContentEntity>();
+                var app = await GetAppAsync(appId);
 
-                callback(JsValue.FromObject(context.Engine, emptyContents));
-                return;
-            }
+                if (app == null)
+                {
+                    var emptyContents = Array.Empty<IEnrichedContentEntity>();
 
-            context.MarkAsync();
+                    scheduler.Run(callback, JsValue.FromObject(context.Engine, emptyContents));
+                    return;
+                }
 
-            try
-            {
-                var app = await GetAppAsync(appId);
+                var contentQuery = serviceProvider.GetRequiredService<IContentQueryService>();
 
                 var requestContext =
                     new Context(user, app).Clone(b => b
@@ -101,19 +90,10 @@ namespace Squidex.Domain.Apps.Entities.Contents
                         .WithUnpublished()
                         .WithoutTotal());
 
-                var contentQuery = serviceProvider.GetRequiredService<IContentQueryService>();
-
-                var contents = await contentQuery.QueryAsync(requestContext, Q.Empty.WithIds(ids), context.CancellationToken);
-
-                // Reset the time contraints and other constraints so that our awaiting does not count as script time.
-                context.Engine.ResetConstraints();
+                var contents = await contentQuery.QueryAsync(requestContext, Q.Empty.WithIds(ids), ct);
 
-                callback(JsValue.FromObject(context.Engine, contents.ToArray()));
-            }
-            catch (Exception ex)
-            {
-                context.Fail(ex);
-            }
+                scheduler.Run(callback, JsValue.FromObject(context.Engine, contents.ToArray()));
+            });
         }
 
         private async Task<IAppEntity> GetAppAsync(DomainId appId)

backend/src/Squidex.Domain.Apps.Entities/Properties/Resources.Designer.cs

@@ -70,7 +70,7 @@ namespace Squidex.Domain.Apps.Entities.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to ueries the assets with the specified IDs and invokes the callback with an array of assets..
+        ///   Looks up a localized string similar to Queries the assets with the specified IDs and invokes the callback with an array of assets..
         /// </summary>
         internal static string ScriptingGetAssets {
             get {
@@ -87,6 +87,15 @@ namespace Squidex.Domain.Apps.Entities.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Gets the blur hash of an asset if it is an image or null otherwise..
+        /// </summary>
+        internal static string ScriptingGetBlurHash {
+            get {
+                return ResourceManager.GetString("ScriptingGetBlurHash", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Queries the content item with the specified ID and invokes the callback with an array of contents..
         /// </summary>
@@ -106,7 +115,7 @@ namespace Squidex.Domain.Apps.Entities.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Increments the counter with the given name and returns the value..
+        ///   Looks up a localized string similar to Increments the counter with the given name and returns the value (OBSOLETE)..
         /// </summary>
         internal static string ScriptingIncrementCounter {
             get {
@@ -115,12 +124,30 @@ namespace Squidex.Domain.Apps.Entities.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Resets the counter with the given name to zero..
+        ///   Looks up a localized string similar to Increments the counter with the given name and returns the value..
+        /// </summary>
+        internal static string ScriptingIncrementCounterV2 {
+            get {
+                return ResourceManager.GetString("ScriptingIncrementCounterV2", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Resets the counter with the given name to zero (OBSOLETE)..
         /// </summary>
         internal static string ScriptingResetCounter {
             get {
                 return ResourceManager.GetString("ScriptingResetCounter", resourceCulture);
             }
         }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Resets the counter with the given name to zero..
+        /// </summary>
+        internal static string ScriptingResetCounterV2 {
+            get {
+                return ResourceManager.GetString("ScriptingResetCounterV2", resourceCulture);
+            }
+        }
     }
 }

backend/src/Squidex.Domain.Apps.Entities/Properties/Resources.resx

@@ -121,11 +121,14 @@
     <value>Queries the asset with the specified ID and invokes the callback with an array of assets.</value>
   </data>
   <data name="ScriptingGetAssets" xml:space="preserve">
-    <value>ueries the assets with the specified IDs and invokes the callback with an array of assets.</value>
+    <value>Queries the assets with the specified IDs and invokes the callback with an array of assets.</value>
   </data>
   <data name="ScriptingGetAssetText" xml:space="preserve">
     <value>Get the text of an asset. Encodings: base64,ascii,unicode,utf8</value>
   </data>
+  <data name="ScriptingGetBlurHash" xml:space="preserve">
+    <value>Gets the blur hash of an asset if it is an image or null otherwise.</value>
+  </data>
   <data name="ScriptingGetReference" xml:space="preserve">
     <value>Queries the content item with the specified ID and invokes the callback with an array of contents.</value>
   </data>
@@ -133,9 +136,15 @@
     <value>Queries the content items with the specified IDs and invokes the callback with an array of contents.</value>
   </data>
   <data name="ScriptingIncrementCounter" xml:space="preserve">
+    <value>Increments the counter with the given name and returns the value (OBSOLETE).</value>
+  </data>
+  <data name="ScriptingIncrementCounterV2" xml:space="preserve">
     <value>Increments the counter with the given name and returns the value.</value>
   </data>
   <data name="ScriptingResetCounter" xml:space="preserve">
+    <value>Resets the counter with the given name to zero (OBSOLETE).</value>
+  </data>
+  <data name="ScriptingResetCounterV2" xml:space="preserve">
     <value>Resets the counter with the given name to zero.</value>
   </data>
 </root>

backend/src/Squidex.Infrastructure/Squidex.Infrastructure.csproj

@@ -31,7 +31,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="OpenTelemetry.Api" Version="1.1.0" />
     <PackageReference Include="RefactoringEssentials" Version="5.6.0" PrivateAssets="all" />
-    <PackageReference Include="Squidex.Assets" Version="2.17.0" />
+    <PackageReference Include="Squidex.Assets" Version="2.18.0" />
     <PackageReference Include="Squidex.Caching" Version="1.9.0" />
     <PackageReference Include="Squidex.Hosting.Abstractions" Version="2.13.0" />
     <PackageReference Include="Squidex.Log" Version="1.6.0" />

backend/src/Squidex.Web/ETagExtensions.cs

@@ -9,7 +9,6 @@ using System.Globalization;
 using System.Security.Cryptography;
 using System.Text;
 using Microsoft.AspNetCore.Http;
-using Microsoft.Net.Http.Headers;
 using Squidex.Domain.Apps.Entities;
 using Squidex.Infrastructure;
 

backend/src/Squidex/Squidex.csproj

@@ -74,16 +74,16 @@
     <PackageReference Include="OrleansDashboard.EmbeddedAssets" Version="3.6.1" />
     <PackageReference Include="RefactoringEssentials" Version="5.6.0" PrivateAssets="all" />
     <PackageReference Include="ReportGenerator" Version="5.0.3" PrivateAssets="all" />
-    <PackageReference Include="Squidex.Assets.Azure" Version="2.17.0" />
-    <PackageReference Include="Squidex.Assets.GoogleCloud" Version="2.17.0" />
-    <PackageReference Include="Squidex.Assets.FTP" Version="2.17.0" />
-    <PackageReference Include="Squidex.Assets.ImageMagick" Version="2.17.0" />
-    <PackageReference Include="Squidex.Assets.ImageSharp" Version="2.17.0" />
-    <PackageReference Include="Squidex.Assets.Mongo" Version="2.17.0" />
-    <PackageReference Include="Squidex.Assets.S3" Version="2.17.0" />
-    <PackageReference Include="Squidex.Assets.TusAdapter" Version="2.17.0" />
+    <PackageReference Include="Squidex.Assets.Azure" Version="2.18.0" />
+    <PackageReference Include="Squidex.Assets.GoogleCloud" Version="2.18.0" />
+    <PackageReference Include="Squidex.Assets.FTP" Version="2.18.0" />
+    <PackageReference Include="Squidex.Assets.ImageMagick" Version="2.18.0" />
+    <PackageReference Include="Squidex.Assets.ImageSharp" Version="2.18.0" />
+    <PackageReference Include="Squidex.Assets.Mongo" Version="2.18.0" />
+    <PackageReference Include="Squidex.Assets.S3" Version="2.18.0" />
+    <PackageReference Include="Squidex.Assets.TusAdapter" Version="2.18.0" />
     <PackageReference Include="Squidex.Caching.Orleans" Version="1.9.0" />
-    <PackageReference Include="Squidex.ClientLibrary" Version="8.6.0" />
+    <PackageReference Include="Squidex.ClientLibrary" Version="8.8.0" />
     <PackageReference Include="Squidex.Hosting" Version="2.13.0" />
     <PackageReference Include="Squidex.OpenIddict.MongoDb" Version="4.0.1-dev" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="all" />

backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/Scripting/JintScriptEngineTests.cs

@@ -194,11 +194,9 @@ namespace Squidex.Domain.Apps.Core.Operations.Scripting
             };
 
             const string script = @"
-                async = true;
-
                 var x = 0;
 
-                getJSON('http://squidex.io', function(result) {
+                getJSON('http://mockup.squidex.io', function(result) {
                     complete();
                 });                    
             ";
@@ -258,11 +256,9 @@ namespace Squidex.Domain.Apps.Core.Operations.Scripting
             };
 
             const string script = @"
-                async = true;
-
                 var data = ctx.data;
 
-                getJSON('http://squidex.io', function(result) {
+                getJSON('http://mockup.squidex.io', function(result) {
                     data.operation = { iv: result.key };
 
                     replace(data);
@@ -288,7 +284,7 @@ namespace Squidex.Domain.Apps.Core.Operations.Scripting
             const string script = @"
                 var data = ctx.data;
 
-                getJSON('http://squidex.io', function(result) {
+                getJSON('http://mockup.squidex.io', function(result) {
                     data.operation = { iv: result.key };
 
                     replace(data);
@@ -302,7 +298,7 @@ namespace Squidex.Domain.Apps.Core.Operations.Scripting
         }
 
         [Fact]
-        public async Task TransformAsync_should_timeout_if_replace_never_called()
+        public async Task TransformAsync_should_not_timeout_if_replace_never_called()
         {
             var vars = new ScriptVars
             {
@@ -312,16 +308,14 @@ namespace Squidex.Domain.Apps.Core.Operations.Scripting
             };
 
             const string script = @"
-                async = true;
-
                 var data = ctx.data;
 
-                getJSON('http://squidex.io', function(result) {
+                getJSON('http://cloud.squidex.io/healthz', function(result) {
                     data.operation = { iv: result.key };
                 });
             ";
 
-            await Assert.ThrowsAnyAsync<OperationCanceledException>(() => sut.TransformAsync(vars, script, contentOptions));
+            await sut.TransformAsync(vars, script, contentOptions);
         }
 
         [Fact]

backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/AssetsFluidExtensionTests.cs

@@ -9,6 +9,7 @@ using System.Text;
 using FakeItEasy;
 using Microsoft.Extensions.DependencyInjection;
 using Squidex.Assets;
+using Squidex.Domain.Apps.Core.Assets;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.Rules.EnrichedEvents;
 using Squidex.Domain.Apps.Core.Templates;
@@ -21,9 +22,10 @@ namespace Squidex.Domain.Apps.Entities.Assets
 {
     public class AssetsFluidExtensionTests
     {
-        private readonly IAssetQueryService assetQuery = A.Fake<IAssetQueryService>();
-        private readonly IAssetFileStore assetFileStore = A.Fake<IAssetFileStore>();
         private readonly IAppProvider appProvider = A.Fake<IAppProvider>();
+        private readonly IAssetFileStore assetFileStore = A.Fake<IAssetFileStore>();
+        private readonly IAssetQueryService assetQuery = A.Fake<IAssetQueryService>();
+        private readonly IAssetThumbnailGenerator assetThumbnailGenerator = A.Fake<IAssetThumbnailGenerator>();
         private readonly NamedId<DomainId> appId = NamedId.Of(DomainId.NewGuid(), "my-app");
         private readonly FluidTemplateEngine sut;
 
@@ -32,8 +34,9 @@ namespace Squidex.Domain.Apps.Entities.Assets
             var services =
                 new ServiceCollection()
                     .AddSingleton(appProvider)
-                    .AddSingleton(assetQuery)
                     .AddSingleton(assetFileStore)
+                    .AddSingleton(assetQuery)
+                    .AddSingleton(assetThumbnailGenerator)
                     .BuildServiceProvider();
 
             var extensions = new IFluidExtension[]
@@ -47,6 +50,29 @@ namespace Squidex.Domain.Apps.Entities.Assets
             sut = new FluidTemplateEngine(extensions);
         }
 
+        public static IEnumerable<object[]> Encodings()
+        {
+            yield return new object[] { "ascii" };
+            yield return new object[] { "unicode" };
+            yield return new object[] { "utf8" };
+            yield return new object[] { "base64" };
+        }
+
+        public static byte[] Encode(string encoding, string text)
+        {
+            switch (encoding)
+            {
+                case "base64":
+                    return Convert.FromBase64String(text);
+                case "ascii":
+                    return Encoding.ASCII.GetBytes(text);
+                case "unicode":
+                    return Encoding.Unicode.GetBytes(text);
+                default:
+                    return Encoding.UTF8.GetBytes(text);
+            }
+        }
+
         [Fact]
         public async Task Should_resolve_assets_in_loop()
         {
@@ -91,20 +117,21 @@ namespace Squidex.Domain.Apps.Entities.Assets
             Assert.Equal(Cleanup(expected), Cleanup(result));
         }
 
-        [Fact]
-        public async Task Should_resolve_asset_text()
+        [Theory]
+        [MemberData(nameof(Encodings))]
+        public async Task Should_resolve_text(string encoding)
         {
             var (vars, asset) = SetupAssetVars();
 
-            SetupText(asset.Id, Encoding.UTF8.GetBytes("Hello Asset"));
+            SetupText(asset.ToRef(), Encode(encoding, "hello+assets"));
 
-            var template = @"
-                {% assign ref = event.data.assets.iv[0] | asset %}
-                Text: {{ ref | assetText }}
+            var template = $@"
+                {{% assign ref = event.data.assets.iv[0] | asset %}}
+                Text: {{{{ ref | assetText: '{encoding}' }}}}
             ";
 
             var expected = $@"
-                Text: Hello Asset
+                Text: hello+assets
             ";
 
             var result = await sut.RenderAsync(template, vars);
@@ -113,40 +140,52 @@ namespace Squidex.Domain.Apps.Entities.Assets
         }
 
         [Fact]
-        public async Task Should_resolve_asset_text_with_utf8()
+        public async Task Should_not_resolve_text_if_too_big()
         {
-            var (vars, asset) = SetupAssetVars();
-
-            SetupText(asset.Id, Encoding.UTF8.GetBytes("Hello Asset"));
+            var (vars, _) = SetupAssetVars(1_000_000);
 
             var template = @"
                 {% assign ref = event.data.assets.iv[0] | asset %}
-                Text: {{ ref | assetText: 'utf8' }}
+                Text: {{ ref | assetText }}
             ";
 
             var expected = $@"
-                Text: Hello Asset
+                Text: ErrorTooBig
             ";
 
             var result = await sut.RenderAsync(template, vars);
 
             Assert.Equal(Cleanup(expected), Cleanup(result));
+
+            A.CallTo(() => assetFileStore.DownloadAsync(A<DomainId>._, A<DomainId>._, A<long>._, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
+                .MustNotHaveHappened();
         }
 
-        [Fact]
-        public async Task Should_resolve_asset_text_with_unicode()
+        [Theory]
+        [MemberData(nameof(Encodings))]
+        public async Task Should_resolve_text_from_event(string encoding)
         {
-            var (vars, asset) = SetupAssetVars();
+            var @event = new EnrichedAssetEvent
+            {
+                Id = DomainId.NewGuid(),
+                FileVersion = 0,
+                FileSize = 100,
+                AppId = appId
+            };
 
-            SetupText(asset.Id, Encoding.Unicode.GetBytes("Hello Asset"));
+            SetupText(@event.ToRef(), Encode(encoding, "hello+assets"));
 
-            var template = @"
-                {% assign ref = event.data.assets.iv[0] | asset %}
-                Text: {{ ref | assetText: 'unicode' }}
+            var vars = new TemplateVars
+            {
+                ["event"] = @event
+            };
+
+            var template = $@"
+                Text: {{{{ event | assetText: '{encoding}' }}}}
             ";
 
             var expected = $@"
-                Text: Hello Asset
+                Text: hello+assets
             ";
 
             var result = await sut.RenderAsync(template, vars);
@@ -155,19 +194,19 @@ namespace Squidex.Domain.Apps.Entities.Assets
         }
 
         [Fact]
-        public async Task Should_resolve_asset_text_with_ascii()
+        public async Task Should_resolve_blur_hash()
         {
             var (vars, asset) = SetupAssetVars();
 
-            SetupText(asset.Id, Encoding.ASCII.GetBytes("Hello Asset"));
+            SetupBlurHash(asset.ToRef(), "Hash");
 
             var template = @"
                 {% assign ref = event.data.assets.iv[0] | asset %}
-                Text: {{ ref | assetText: 'ascii' }}
+                Text: {{ ref | assetBlurHash: 3,4 }}
             ";
 
             var expected = $@"
-                Text: Hello Asset
+                Text: Hash
             ";
 
             var result = await sut.RenderAsync(template, vars);
@@ -176,38 +215,39 @@ namespace Squidex.Domain.Apps.Entities.Assets
         }
 
         [Fact]
-        public async Task Should_resolve_asset_text_with_base64()
+        public async Task Should_not_resolve_blur_hash_if_too_big()
         {
-            var (vars, asset) = SetupAssetVars();
-
-            SetupText(asset.Id, Encoding.UTF8.GetBytes("Hello Asset"));
+            var (vars, _) = SetupAssetVars(1_000_000);
 
             var template = @"
                 {% assign ref = event.data.assets.iv[0] | asset %}
-                Text: {{ ref | assetText: 'base64' }}
+                Text: {{ ref | assetBlurHash }}
             ";
 
             var expected = $@"
-                Text: SGVsbG8gQXNzZXQ=
+                Text: ErrorTooBig
             ";
 
             var result = await sut.RenderAsync(template, vars);
 
             Assert.Equal(Cleanup(expected), Cleanup(result));
+
+            A.CallTo(() => assetFileStore.DownloadAsync(A<DomainId>._, A<DomainId>._, A<long>._, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
+                .MustNotHaveHappened();
         }
 
         [Fact]
-        public async Task Should_not_resolve_asset_text_if_too_big()
+        public async Task Should_not_resolve_blur_hash_if_not_an_image()
         {
-            var (vars, _) = SetupAssetVars(1_000_000);
+            var (vars, _) = SetupAssetVars(type: AssetType.Unknown);
 
             var template = @"
                 {% assign ref = event.data.assets.iv[0] | asset %}
-                Text: {{ ref | assetText }}
+                Text: {{ ref | assetBlurHash }}
             ";
 
             var expected = $@"
-                Text: ErrorTooBig
+                Text: NoImage
             ";
 
             var result = await sut.RenderAsync(template, vars);
@@ -219,17 +259,18 @@ namespace Squidex.Domain.Apps.Entities.Assets
         }
 
         [Fact]
-        public async Task Should_resolve_asset_text_from_event()
+        public async Task Should_resolve_blur_hash_from_event()
         {
             var @event = new EnrichedAssetEvent
             {
                 Id = DomainId.NewGuid(),
+                AssetType = AssetType.Image,
                 FileVersion = 0,
                 FileSize = 100,
                 AppId = appId
             };
 
-            SetupText(@event.Id, Encoding.UTF8.GetBytes("Hello Asset"));
+            SetupBlurHash(@event.ToRef(), "Hash");
 
             var vars = new TemplateVars
             {
@@ -237,11 +278,11 @@ namespace Squidex.Domain.Apps.Entities.Assets
             };
 
             var template = @"
-                Text: {{ event | assetText }}
+                Text: {{ event | assetBlurHash }}
             ";
 
             var expected = $@"
-                Text: Hello Asset
+                Text: Hash
             ";
 
             var result = await sut.RenderAsync(template, vars);
@@ -249,53 +290,22 @@ namespace Squidex.Domain.Apps.Entities.Assets
             Assert.Equal(Cleanup(expected), Cleanup(result));
         }
 
-        [Fact]
-        public async Task Should_not_resolve_asset_text_from_event_if_too_big()
+        private void SetupBlurHash(AssetRef asset, string hash)
         {
-            var @event = new EnrichedAssetEvent
-            {
-                Id = DomainId.NewGuid(),
-                FileVersion = 0,
-                FileSize = 1_000_000,
-                AppId = appId
-            };
-
-            var vars = new TemplateVars
-            {
-                ["event"] = @event
-            };
-
-            var template = @"
-                Text: {{ event | assetText }}
-            ";
-
-            var expected = $@"
-                Text: ErrorTooBig
-            ";
-
-            var result = await sut.RenderAsync(template, vars);
-
-            Assert.Equal(Cleanup(expected), Cleanup(result));
-
-            A.CallTo(() => assetFileStore.DownloadAsync(A<DomainId>._, A<DomainId>._, A<long>._, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
-                .MustNotHaveHappened();
+            A.CallTo(() => assetThumbnailGenerator.ComputeBlurHashAsync(A<Stream>._, asset.MimeType, A<BlurOptions>._, A<CancellationToken>._))
+                .Returns(hash);
         }
 
-        private void SetupText(DomainId id, byte[] bytes)
+        private void SetupText(AssetRef asset, byte[] bytes)
         {
-            A.CallTo(() => assetFileStore.DownloadAsync(appId.Id, id, 0, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
-                .Invokes(x =>
-                {
-                    var stream = x.GetArgument<Stream>(4)!;
-
-                    stream.Write(bytes);
-                });
+            A.CallTo(() => assetFileStore.DownloadAsync(appId.Id, asset.Id, asset.FileVersion, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
+                .Invokes(x => x.GetArgument<Stream>(4)?.Write(bytes));
         }
 
-        private (TemplateVars, IAssetEntity) SetupAssetVars(int fileSize = 100)
+        private (TemplateVars, IAssetEntity) SetupAssetVars(int fileSize = 100, AssetType type = AssetType.Image)
         {
             var assetId = DomainId.NewGuid();
-            var asset = CreateAsset(assetId, 1, fileSize);
+            var asset = CreateAsset(assetId, 1, fileSize, type);
 
             var @event = new EnrichedContentEvent
             {
@@ -310,8 +320,6 @@ namespace Squidex.Domain.Apps.Entities.Assets
             A.CallTo(() => assetQuery.FindAsync(A<Context>._, assetId, EtagVersion.Any, A<CancellationToken>._))
                 .Returns(asset);
 
-            SetupText(@event.Id, Encoding.UTF8.GetBytes("Hello Asset"));
-
             var vars = new TemplateVars
             {
                 ["event"] = @event
@@ -320,12 +328,12 @@ namespace Squidex.Domain.Apps.Entities.Assets
             return (vars, asset);
         }
 
-        private (TemplateVars, IAssetEntity[]) SetupAssetsVars(int fileSize = 100)
+        private (TemplateVars, IAssetEntity[]) SetupAssetsVars(int fileSize = 100, AssetType type = AssetType.Image)
         {
             var assetId1 = DomainId.NewGuid();
-            var asset1 = CreateAsset(assetId1, 1, fileSize);
+            var asset1 = CreateAsset(assetId1, 1, fileSize, type);
             var assetId2 = DomainId.NewGuid();
-            var asset2 = CreateAsset(assetId2, 2, fileSize);
+            var asset2 = CreateAsset(assetId2, 2, fileSize, type);
 
             var @event = new EnrichedContentEvent
             {
@@ -351,7 +359,7 @@ namespace Squidex.Domain.Apps.Entities.Assets
             return (vars, new[] { asset1, asset2 });
         }
 
-        private IEnrichedAssetEntity CreateAsset(DomainId assetId, int index, int fileSize = 100)
+        private IEnrichedAssetEntity CreateAsset(DomainId assetId, int index, int fileSize = 100, AssetType type = AssetType.Unknown)
         {
             return new AssetEntity
             {
@@ -359,6 +367,8 @@ namespace Squidex.Domain.Apps.Entities.Assets
                 Id = assetId,
                 FileSize = fileSize,
                 FileName = $"file{index}.jpg",
+                MimeType = "image/jpg",
+                Type = type
             };
         }
 

backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/AssetsJintExtensionTests.cs

@@ -12,6 +12,7 @@ using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
 using Squidex.Assets;
+using Squidex.Domain.Apps.Core.Assets;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.Rules.EnrichedEvents;
 using Squidex.Domain.Apps.Core.Scripting;
@@ -25,9 +26,10 @@ namespace Squidex.Domain.Apps.Entities.Assets
 {
     public class AssetsJintExtensionTests : IClassFixture<TranslationsFixture>
     {
-        private readonly IAssetQueryService assetQuery = A.Fake<IAssetQueryService>();
-        private readonly IAssetFileStore assetFileStore = A.Fake<IAssetFileStore>();
         private readonly IAppProvider appProvider = A.Fake<IAppProvider>();
+        private readonly IAssetFileStore assetFileStore = A.Fake<IAssetFileStore>();
+        private readonly IAssetQueryService assetQuery = A.Fake<IAssetQueryService>();
+        private readonly IAssetThumbnailGenerator assetThumbnailGenerator = A.Fake<IAssetThumbnailGenerator>();
         private readonly NamedId<DomainId> appId = NamedId.Of(DomainId.NewGuid(), "my-app");
         private readonly JintScriptEngine sut;
 
@@ -36,8 +38,9 @@ namespace Squidex.Domain.Apps.Entities.Assets
             var services =
                 new ServiceCollection()
                     .AddSingleton(appProvider)
-                    .AddSingleton(assetQuery)
                     .AddSingleton(assetFileStore)
+                    .AddSingleton(assetQuery)
+                    .AddSingleton(assetThumbnailGenerator)
                     .BuildServiceProvider();
 
             var extensions = new IJintExtension[]
@@ -45,7 +48,7 @@ namespace Squidex.Domain.Apps.Entities.Assets
                 new AssetsJintExtension(services)
             };
 
-            A.CallTo(() => appProvider.GetAppAsync(appId.Id, false, default))
+            A.CallTo(() => appProvider.GetAppAsync(appId.Id, false, A<CancellationToken>._))
                 .Returns(Mocks.App(appId));
 
             sut = new JintScriptEngine(new MemoryCache(Options.Create(new MemoryCacheOptions())),
@@ -57,13 +60,36 @@ namespace Squidex.Domain.Apps.Entities.Assets
                 extensions);
         }
 
+        public static IEnumerable<object[]> Encodings()
+        {
+            yield return new object[] { "ascii" };
+            yield return new object[] { "unicode" };
+            yield return new object[] { "utf8" };
+            yield return new object[] { "base64" };
+        }
+
+        public static byte[] Encode(string encoding, string text)
+        {
+            switch (encoding)
+            {
+                case "base64":
+                    return Convert.FromBase64String(text);
+                case "ascii":
+                    return Encoding.ASCII.GetBytes(text);
+                case "unicode":
+                    return Encoding.Unicode.GetBytes(text);
+                default:
+                    return Encoding.UTF8.GetBytes(text);
+            }
+        }
+
         [Fact]
         public async Task Should_resolve_asset()
         {
-            var (vars, asset) = SetupAssetVars();
+            var (vars, assets) = SetupAssetsVars(1);
 
             var expected = $@"
-                Text: {asset.FileName} {asset.Id}
+                Text: {assets[0].FileName} {assets[0].Id}
             ";
 
             var script = @"
@@ -81,7 +107,7 @@ namespace Squidex.Domain.Apps.Entities.Assets
         [Fact]
         public async Task Should_resolve_assets()
         {
-            var (vars, assets) = SetupAssetsVars();
+            var (vars, assets) = SetupAssetsVars(2);
 
             var expected = $@"
                 Text: {assets[0].FileName} {assets[0].Id}
@@ -101,25 +127,26 @@ namespace Squidex.Domain.Apps.Entities.Assets
             Assert.Equal(Cleanup(expected), Cleanup(result));
         }
 
-        [Fact]
-        public async Task Should_resolve_asset_text()
+        [Theory]
+        [MemberData(nameof(Encodings))]
+        public async Task Should_resolve_text(string encoding)
         {
-            var (vars, asset) = SetupAssetVars();
+            var (vars, assets) = SetupAssetsVars(1);
 
-            SetupText(asset.Id, Encoding.UTF8.GetBytes("Hello Asset"));
+            SetupText(assets[0].ToRef(), Encode(encoding, "hello+assets"));
 
             var expected = @"
-                Text: Hello Asset
+                Text: hello+assets
             ";
 
-            var script = @"
-                getAssets(data.assets.iv, function (assets) {
-                    getAssetText(assets[0], function (text) {
-                        var result = `Text: ${text}`;
+            var script = $@"
+                getAssets(data.assets.iv, function (assets) {{
+                    getAssetText(assets[0], function (text) {{
+                        var result = `Text: ${{text}}`;
 
                         complete(result);
-                    });
-                });";
+                    }}, '{encoding}');
+                }});";
 
             var result = (await sut.ExecuteAsync(vars, script)).ToString();
 
@@ -127,14 +154,12 @@ namespace Squidex.Domain.Apps.Entities.Assets
         }
 
         [Fact]
-        public async Task Should_resolve_asset_text_with_utf8()
+        public async Task Should_not_resolve_text_if_too_big()
         {
-            var (vars, asset) = SetupAssetVars();
-
-            SetupText(asset.Id, Encoding.UTF8.GetBytes("Hello Asset"));
+            var (vars, _) = SetupAssetsVars(1, 1_000_000);
 
             var expected = @"
-                Text: Hello Asset
+                Text: ErrorTooBig
             ";
 
             var script = @"
@@ -143,33 +168,46 @@ namespace Squidex.Domain.Apps.Entities.Assets
                         var result = `Text: ${text}`;
 
                         complete(result);
-                    }, 'utf8');
+                    });
                 });";
 
             var result = (await sut.ExecuteAsync(vars, script)).ToString();
 
             Assert.Equal(Cleanup(expected), Cleanup(result));
+
+            A.CallTo(() => assetFileStore.DownloadAsync(A<DomainId>._, A<DomainId>._, A<long>._, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
+                .MustNotHaveHappened();
         }
 
-        [Fact]
-        public async Task Should_resolve_asset_text_with_unicode()
+        [Theory]
+        [MemberData(nameof(Encodings))]
+        public async Task Should_resolve_text_from_event(string encoding)
         {
-            var (vars, asset) = SetupAssetVars();
+            var @event = new EnrichedAssetEvent
+            {
+                Id = DomainId.NewGuid(),
+                FileVersion = 0,
+                FileSize = 100,
+                AppId = appId
+            };
+
+            SetupText(@event.ToRef(), Encode(encoding, "hello+assets"));
 
-            SetupText(asset.Id, Encoding.Unicode.GetBytes("Hello Asset"));
+            var vars = new ScriptVars
+            {
+                ["event"] = @event
+            };
 
             var expected = @"
-                Text: Hello Asset
+                Text: hello+assets
             ";
 
-            var script = @"
-                getAssets(data.assets.iv, function (assets) {
-                    getAssetText(assets[0], function (text) {
-                        var result = `Text: ${text}`;
+            var script = $@"
+                getAssetText(event, function (text) {{
+                    var result = `Text: ${{text}}`;
 
-                        complete(result);
-                    }, 'unicode');
-                });";
+                    complete(result);
+                }}, '{encoding}');";
 
             var result = (await sut.ExecuteAsync(vars, script)).ToString();
 
@@ -177,23 +215,23 @@ namespace Squidex.Domain.Apps.Entities.Assets
         }
 
         [Fact]
-        public async Task Should_resolve_asset_text_with_ascii()
+        public async Task Should_resolve_blur_hash()
         {
-            var (vars, asset) = SetupAssetVars();
+            var (vars, assets) = SetupAssetsVars(1);
 
-            SetupText(asset.Id, Encoding.ASCII.GetBytes("Hello Asset"));
+            SetupBlurHash(assets[0].ToRef(), "Hash");
 
             var expected = @"
-                Text: Hello Asset
+                Hash: Hash
             ";
 
             var script = @"
                 getAssets(data.assets.iv, function (assets) {
-                    getAssetText(assets[0], function (text) {
-                        var result = `Text: ${text}`;
+                    getAssetBlurHash(assets[0], function (text) {
+                        var result = `Hash: ${text}`;
 
                         complete(result);
-                    }, 'ascii');
+                    });
                 });";
 
             var result = (await sut.ExecuteAsync(vars, script)).ToString();
@@ -202,23 +240,23 @@ namespace Squidex.Domain.Apps.Entities.Assets
         }
 
         [Fact]
-        public async Task Should_resolve_asset_text_with_base64()
+        public async Task Should_not_resolve_blur_hash_if_too_big()
         {
-            var (vars, asset) = SetupAssetVars();
+            var (vars, assets) = SetupAssetsVars(1, 1_000_000);
 
-            SetupText(asset.Id, Encoding.UTF8.GetBytes("Hello Asset"));
+            SetupBlurHash(assets[0].ToRef(), "Hash");
 
             var expected = @"
-                Text: SGVsbG8gQXNzZXQ=
+                Hash: null
             ";
 
             var script = @"
                 getAssets(data.assets.iv, function (assets) {
-                    getAssetText(assets[0], function (text) {
-                        var result = `Text: ${text}`;
+                    getAssetBlurHash(assets[0], function (text) {
+                        var result = `Hash: ${text}`;
 
                         complete(result);
-                    }, 'base64');
+                    });
                 });";
 
             var result = (await sut.ExecuteAsync(vars, script)).ToString();
@@ -227,18 +265,20 @@ namespace Squidex.Domain.Apps.Entities.Assets
         }
 
         [Fact]
-        public async Task Should_not_resolve_asset_text_if_too_big()
+        public async Task Should_not_resolve_blue_hash_if_not_an_image()
         {
-            var (vars, _) = SetupAssetVars(1_000_000);
+            var (vars, assets) = SetupAssetsVars(1, type: AssetType.Audio);
+
+            SetupBlurHash(assets[0].ToRef(), "Hash");
 
             var expected = @"
-                Text: ErrorTooBig
+                Hash: null
             ";
 
             var script = @"
                 getAssets(data.assets.iv, function (assets) {
-                    getAssetText(assets[0], function (text) {
-                        var result = `Text: ${text}`;
+                    getAssetBlurHash(assets[0], function (text) {
+                        var result = `Hash: ${text}`;
 
                         complete(result);
                     });
@@ -247,55 +287,21 @@ namespace Squidex.Domain.Apps.Entities.Assets
             var result = (await sut.ExecuteAsync(vars, script)).ToString();
 
             Assert.Equal(Cleanup(expected), Cleanup(result));
-
-            A.CallTo(() => assetFileStore.DownloadAsync(A<DomainId>._, A<DomainId>._, A<long>._, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
-                .MustNotHaveHappened();
         }
 
         [Fact]
-        public async Task Should_resolve_asset_text_from_event()
+        public async Task Should_resolve_blur_hash_from_event()
         {
             var @event = new EnrichedAssetEvent
             {
                 Id = DomainId.NewGuid(),
+                AssetType = AssetType.Image,
                 FileVersion = 0,
                 FileSize = 100,
                 AppId = appId
             };
 
-            SetupText(@event.Id, Encoding.UTF8.GetBytes("Hello Asset"));
-
-            var vars = new ScriptVars
-            {
-                ["event"] = @event
-            };
-
-            var expected = @"
-                Text: Hello Asset
-            ";
-
-            var script = @"
-                getAssetText(event, function (text) {
-                    var result = `Text: ${text}`;
-
-                    complete(result);
-                });";
-
-            var result = (await sut.ExecuteAsync(vars, script)).ToString();
-
-            Assert.Equal(Cleanup(expected), Cleanup(result));
-        }
-
-        [Fact]
-        public async Task Should_not_resolve_asset_text_from_event_if_too_big()
-        {
-            var @event = new EnrichedAssetEvent
-            {
-                Id = DomainId.NewGuid(),
-                FileVersion = 0,
-                FileSize = 1_000_000,
-                AppId = appId
-            };
+            SetupBlurHash(@event.ToRef(), "Hash");
 
             var vars = new ScriptVars
             {
@@ -303,11 +309,11 @@ namespace Squidex.Domain.Apps.Entities.Assets
             };
 
             var expected = @"
-                Text: ErrorTooBig
+                Text: Hash
             ";
 
             var script = @"
-                getAssetText(event, function (text) {
+                getAssetBlurHash(event, function (text) {
                     var result = `Text: ${text}`;
 
                     complete(result);
@@ -316,56 +322,24 @@ namespace Squidex.Domain.Apps.Entities.Assets
             var result = (await sut.ExecuteAsync(vars, script)).ToString();
 
             Assert.Equal(Cleanup(expected), Cleanup(result));
-
-            A.CallTo(() => assetFileStore.DownloadAsync(A<DomainId>._, A<DomainId>._, A<long>._, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
-                .MustNotHaveHappened();
         }
 
-        private void SetupText(DomainId id, byte[] bytes)
+        private void SetupBlurHash(AssetRef asset, string hash)
         {
-            A.CallTo(() => assetFileStore.DownloadAsync(appId.Id, id, 0, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
-                .Invokes(x =>
-                {
-                    var stream = x.GetArgument<Stream>(4)!;
-
-                    stream.Write(bytes);
-                });
+            A.CallTo(() => assetThumbnailGenerator.ComputeBlurHashAsync(A<Stream>._, asset.MimeType, A<BlurOptions>._, A<CancellationToken>._))
+                .Returns(hash);
         }
 
-        private (ScriptVars, IAssetEntity) SetupAssetVars(int fileSize = 100)
+        private void SetupText(AssetRef asset, byte[] bytes)
         {
-            var assetId = DomainId.NewGuid();
-            var asset = CreateAsset(assetId, 1, fileSize);
-
-            var user = new ClaimsPrincipal();
-
-            var data =
-                new ContentData()
-                    .AddField("assets",
-                        new ContentFieldData()
-                            .AddInvariant(JsonValue.Array(assetId)));
-
-            A.CallTo(() => assetQuery.QueryAsync(
-                    A<Context>.That.Matches(x => x.App.Id == appId.Id && x.User == user), null, A<Q>.That.HasIds(assetId), A<CancellationToken>._))
-                .Returns(ResultList.CreateFrom(2, asset));
-
-            var vars = new ScriptVars
-            {
-                ["data"] = data,
-                ["appId"] = appId.Id,
-                ["appName"] = appId.Name,
-                ["user"] = user
-            };
-
-            return (vars, asset);
+            A.CallTo(() => assetFileStore.DownloadAsync(appId.Id, asset.Id, asset.FileVersion, null, A<Stream>._, A<BytesRange>._, A<CancellationToken>._))
+                .Invokes(x => x.GetArgument<Stream>(4)?.Write(bytes));
         }
 
-        private (ScriptVars, IAssetEntity[]) SetupAssetsVars(int fileSize = 100)
+        private (ScriptVars, IAssetEntity[]) SetupAssetsVars(int count, int fileSize = 100, AssetType type = AssetType.Image)
         {
-            var assetId1 = DomainId.NewGuid();
-            var asset1 = CreateAsset(assetId1, 1, fileSize);
-            var assetId2 = DomainId.NewGuid();
-            var asset2 = CreateAsset(assetId1, 2, fileSize);
+            var assets = Enumerable.Range(0, count).Select(x => CreateAsset(1, fileSize, type)).ToArray();
+            var assetIds = assets.Select(x => x.Id);
 
             var user = new ClaimsPrincipal();
 
@@ -373,11 +347,11 @@ namespace Squidex.Domain.Apps.Entities.Assets
                 new ContentData()
                     .AddField("assets",
                         new ContentFieldData()
-                            .AddInvariant(JsonValue.Array(assetId1, assetId2)));
+                            .AddInvariant(JsonValue.Array(assetIds)));
 
             A.CallTo(() => assetQuery.QueryAsync(
-                    A<Context>.That.Matches(x => x.App.Id == appId.Id && x.User == user), null, A<Q>.That.HasIds(assetId1, assetId2), A<CancellationToken>._))
-                .Returns(ResultList.CreateFrom(2, asset1, asset2));
+                    A<Context>.That.Matches(x => x.App.Id == appId.Id && x.User == user), null, A<Q>.That.HasIds(assetIds), A<CancellationToken>._))
+                .Returns(ResultList.CreateFrom(2, assets));
 
             var vars = new ScriptVars
             {
@@ -387,17 +361,19 @@ namespace Squidex.Domain.Apps.Entities.Assets
                 ["user"] = user
             };
 
-            return (vars, new[] { asset1, asset2 });
+            return (vars, assets);
         }
 
-        private IEnrichedAssetEntity CreateAsset(DomainId assetId, int index, int fileSize = 100)
+        private IEnrichedAssetEntity CreateAsset(int index, int fileSize = 100, AssetType type = AssetType.Image)
         {
             return new AssetEntity
             {
                 AppId = appId,
-                Id = assetId,
+                Id = DomainId.NewGuid(),
                 FileSize = fileSize,
                 FileName = $"file{index}.jpg",
+                MimeType = "image/jpg",
+                Type = type
             };
         }
 

backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/Counter/CounterJintExtensionTests.cs

@@ -61,6 +61,33 @@ namespace Squidex.Domain.Apps.Entities.Contents.Counter
             Assert.Equal("3", result);
         }
 
+        [Fact]
+        public async Task Should_reset_counter_with_callback()
+        {
+            var appId = DomainId.NewGuid();
+
+            A.CallTo(() => grainFactory.GetGrain<ICounterGrain>(appId.ToString(), null))
+                .Returns(counter);
+
+            A.CallTo(() => counter.ResetAsync("my", 4))
+                .Returns(3);
+
+            const string script = @"
+                resetCounterV2('my', function(result) {
+                    complete(result);
+                }, 4);
+            ";
+
+            var vars = new ScriptVars
+            {
+                ["appId"] = appId
+            };
+
+            var result = (await sut.ExecuteAsync(vars, script)).ToString();
+
+            Assert.Equal("3", result);
+        }
+
         [Fact]
         public void Should_increment_counter()
         {
@@ -85,5 +112,32 @@ namespace Squidex.Domain.Apps.Entities.Contents.Counter
 
             Assert.Equal("3", result);
         }
+
+        [Fact]
+        public async Task Should_increment_counter_with_callback()
+        {
+            var appId = DomainId.NewGuid();
+
+            A.CallTo(() => grainFactory.GetGrain<ICounterGrain>(appId.ToString(), null))
+                .Returns(counter);
+
+            A.CallTo(() => counter.IncrementAsync("my"))
+                .Returns(3);
+
+            const string script = @"
+                incrementCounter('my', function (result) {
+                    complete(result);
+                });
+            ";
+
+            var vars = new ScriptVars
+            {
+                ["appId"] = appId
+            };
+
+            var result = (await sut.ExecuteAsync(vars, script)).ToString();
+
+            Assert.Equal("3", result);
+        }
     }
 }

backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/ReferencesJintExtensionTests.cs

@@ -55,28 +55,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
         [Fact]
         public async Task Should_resolve_reference()
         {
-            var referenceId1 = DomainId.NewGuid();
-            var reference1 = CreateReference(referenceId1, 1);
-
-            var user = new ClaimsPrincipal();
-
-            var data =
-                new ContentData()
-                    .AddField("references",
-                        new ContentFieldData()
-                            .AddInvariant(JsonValue.Array(referenceId1)));
-
-            A.CallTo(() => contentQuery.QueryAsync(
-                    A<Context>.That.Matches(x => x.App.Id == appId.Id && x.User == user), A<Q>.That.HasIds(referenceId1), A<CancellationToken>._))
-                .Returns(ResultList.CreateFrom(1, reference1));
-
-            var vars = new ScriptVars
-            {
-                ["appId"] = appId.Id,
-                ["data"] = data,
-                ["dataOld"] = null,
-                ["user"] = user
-            };
+            var (vars, _) = SetupReferenceVars(1);
 
             var expected = @"
                 Text: Hello 1 World 1
@@ -97,10 +76,30 @@ namespace Squidex.Domain.Apps.Entities.Contents
         [Fact]
         public async Task Should_resolve_references()
         {
-            var referenceId1 = DomainId.NewGuid();
-            var reference1 = CreateReference(referenceId1, 1);
-            var referenceId2 = DomainId.NewGuid();
-            var reference2 = CreateReference(referenceId1, 2);
+            var (vars, _) = SetupReferenceVars(2);
+
+            var expected = @"
+                Text: Hello 1 World 1
+                Text: Hello 2 World 2
+            ";
+
+            var script = @"
+                getReferences(data.references.iv, function (references) {
+                    var result1 = `Text: ${references[0].data.field1.iv} ${references[0].data.field2.iv}`;
+                    var result2 = `Text: ${references[1].data.field1.iv} ${references[1].data.field2.iv}`;
+
+                    complete(`${result1}\n${result2}`);
+                })";
+
+            var result = (await sut.ExecuteAsync(vars, script)).ToString();
+
+            Assert.Equal(Cleanup(expected), Cleanup(result));
+        }
+
+        private (ScriptVars, IContentEntity[]) SetupReferenceVars(int count)
+        {
+            var references = Enumerable.Range(0, count).Select((x, i) => CreateReference(i + 1)).ToArray();
+            var referenceIds = references.Select(x => x.Id);
 
             var user = new ClaimsPrincipal();
 
@@ -108,11 +107,11 @@ namespace Squidex.Domain.Apps.Entities.Contents
                 new ContentData()
                     .AddField("references",
                         new ContentFieldData()
-                            .AddInvariant(JsonValue.Array(referenceId1, referenceId2)));
+                            .AddInvariant(JsonValue.Array(referenceIds)));
 
             A.CallTo(() => contentQuery.QueryAsync(
-                    A<Context>.That.Matches(x => x.App.Id == appId.Id && x.User == user), A<Q>.That.HasIds(referenceId1, referenceId2), A<CancellationToken>._))
-                .Returns(ResultList.CreateFrom(2, reference1, reference2));
+                    A<Context>.That.Matches(x => x.App.Id == appId.Id && x.User == user), A<Q>.That.HasIds(referenceIds), A<CancellationToken>._))
+                .Returns(ResultList.CreateFrom(2, references));
 
             var vars = new ScriptVars
             {
@@ -122,25 +121,10 @@ namespace Squidex.Domain.Apps.Entities.Contents
                 ["user"] = user
             };
 
-            var expected = @"
-                Text: Hello 1 World 1
-                Text: Hello 2 World 2
-            ";
-
-            var script = @"
-                getReferences(data.references.iv, function (references) {
-                    var result1 = `Text: ${references[0].data.field1.iv} ${references[0].data.field2.iv}`;
-                    var result2 = `Text: ${references[1].data.field1.iv} ${references[1].data.field2.iv}`;
-
-                    complete(`${result1}\n${result2}`);
-                })";
-
-            var result = (await sut.ExecuteAsync(vars, script)).ToString();
-
-            Assert.Equal(Cleanup(expected), Cleanup(result));
+            return (vars, references);
         }
 
-        private static IEnrichedContentEntity CreateReference(DomainId referenceId, int index)
+        private static IEnrichedContentEntity CreateReference(int index)
         {
             return new ContentEntity
             {
@@ -152,7 +136,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
                         .AddField("field2",
                             new ContentFieldData()
                                 .AddInvariant(JsonValue.Create($"World {index}"))),
-                Id = referenceId
+                Id = DomainId.NewGuid()
             };
         }