Adds ChangeAbout for Creators

src/Web/Features/Contents/Handlers/ChangeAbout.cs

@@ -0,0 +1,40 @@
+using FastEndpoints;
+using Hutopy.Web.Features.Contents.Data;
+using Microsoft.EntityFrameworkCore;
+
+namespace Hutopy.Web.Features.Contents.Handlers;
+
+public record ChangeAboutRequest(
+    Guid CreatorId,
+    string? Title,
+    string? Description);
+
+public class ChangeAboutHandler(
+    ContentDbContext context)
+    : Endpoint<ChangeAboutRequest>
+{
+    public override void Configure()
+    {
+        Post("/api/creators/{CreatorId}/about");
+        Options(o => o.WithTags("Contents"));
+    }
+
+    public override async Task HandleAsync(
+        ChangeAboutRequest request, 
+        CancellationToken ct)
+    {
+        var creator = await context
+            .Creators
+            .Include(c => c.About)
+            .SingleAsync(
+                c => c.Id == request.CreatorId,
+                cancellationToken: ct);
+
+        creator.About.Title = request.Title;
+        creator.About.Description = request.Description;
+
+        await context.SaveChangesAsync(ct);
+
+        await SendOkAsync(ct);
+    }
+}