feat: add feedback comments activity notifications

backend/src/Socialize.Api/Modules/Feedback/Handlers/GetDeveloperFeedbackTimeline.cs

@@ -0,0 +1,34 @@
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+using Socialize.Api.Data;
+using Socialize.Api.Modules.Feedback.Contracts;
+using Socialize.Api.Modules.Identity.Contracts;
+
+namespace Socialize.Api.Modules.Feedback.Handlers;
+
+public class GetDeveloperFeedbackTimelineHandler(AppDbContext dbContext)
+    : EndpointWithoutRequest<IReadOnlyCollection<FeedbackTimelineItemDto>>
+{
+    public override void Configure()
+    {
+        Get("/api/feedback/{id}/timeline");
+        Roles(KnownRoles.Developer);
+        Options(o => o.WithTags("Feedback"));
+    }
+
+    public override async Task HandleAsync(CancellationToken ct)
+    {
+        Guid id = Route<Guid>("id");
+        bool exists = await dbContext.FeedbackReports.AnyAsync(candidate => candidate.Id == id, ct);
+        if (!exists)
+        {
+            await SendNotFoundAsync(ct);
+            return;
+        }
+
+        IReadOnlyCollection<FeedbackTimelineItemDto> timeline =
+            await GetMyFeedbackTimelineHandler.LoadTimelineAsync(dbContext, id, ct);
+
+        await SendOkAsync(timeline, ct);
+    }
+}