Added content-type and headers options for HttpResponse activity

src/modules/Elsa.Http/Activities/WriteHttpResponse.cs

@@ -1,7 +1,12 @@
 using System.Net;
+using System.Net.Http.Headers;
+using Elsa.Extensions;
 using Elsa.Workflows.Core.Attributes;
 using Elsa.Workflows.Core.Models;
+using Elsa.Workflows.Management.Models;
 using Microsoft.AspNetCore.Http;
+using HttpRequestHeaders = Elsa.Http.Models.HttpRequestHeaders;
+using HttpResponseHeaders = Elsa.Http.Models.HttpResponseHeaders;
 
 namespace Elsa.Http;
 
@@ -23,6 +28,22 @@ public class WriteHttpResponse : Activity
  [Input(Description = "The content to write back.")]
  public Input<string?> Content { get; set; } = new("");
 
+ /// <summary>
+ /// The content type to use when returning the response.
+ /// </summary>
+ [Input(
+ Description = "The content type to use when returning the response.",
+ Options = new[] { "", "text/plain", "text/html", "application/json", "application/xml", "application/x-www-form-urlencoded" },
+ UIHint = InputUIHints.Dropdown
+ )]
+ public Input<string?> ContentType { get; set; } = default!;
+
+ /// <summary>
+ /// The headers to return along with the response.
+ /// </summary>
+ [Input(Description = "The headers to return along with the response.", Category = "Advanced")]
+ public Input<HttpResponseHeaders?> ResponseHeaders { get; set; } = new(new HttpResponseHeaders());
+
  /// <inheritdoc />
  protected override async ValueTask ExecuteAsync(ActivityExecutionContext context)
  {
@@ -39,11 +60,14 @@ protected override async ValueTask ExecuteAsync(ActivityExecutionContext context
  }
 
  var response = httpContext.Response;
-
  response.StatusCode = (int)context.Get(StatusCode);
+
+ var headers = ResponseHeaders.TryGet(context) ?? new HttpResponseHeaders();
+ foreach (var header in headers)
+ response.Headers.Add(header.Key, header.Value);
 
+ response.ContentType = ContentType.TryGet(context);
  var content = context.Get(Content);
-
  if (content != null)
  await response.WriteAsync(content, context.CancellationToken);
  }

src/modules/Elsa.Http/Models/HttpRequestHeaders.cs

@@ -3,6 +3,11 @@
 namespace Elsa.Http.Models;
 
 public class HttpRequestHeaders : Dictionary<string, string[]>
+{
+ public string? ContentType => this.GetValue("content-type")?[0];
+}
+
+public class HttpResponseHeaders : Dictionary<string, string[]>
 {
  public string? ContentType => this.GetValue("content-type")?[0];
 }