feat: add feedback comments activity notifications

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

@@ -0,0 +1,71 @@
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+using Socialize.Api.Data;
+using Socialize.Api.Infrastructure.Security;
+using Socialize.Api.Modules.Feedback.Contracts;
+using Socialize.Api.Modules.Feedback.Data;
+using Socialize.Api.Modules.Feedback.Services;
+
+namespace Socialize.Api.Modules.Feedback.Handlers;
+
+public record AddFeedbackCommentRequest(string Body);
+
+public class AddFeedbackCommentRequestValidator
+    : Validator<AddFeedbackCommentRequest>
+{
+    public AddFeedbackCommentRequestValidator()
+    {
+        RuleFor(x => x.Body).NotEmpty().MaximumLength(8000);
+    }
+}
+
+public class AddMyFeedbackCommentHandler(
+    AppDbContext dbContext,
+    FeedbackNotificationService notificationService)
+    : Endpoint<AddFeedbackCommentRequest, FeedbackTimelineItemDto>
+{
+    public override void Configure()
+    {
+        Post("/api/my-feedback/{id}/comments");
+        Options(o => o.WithTags("Feedback"));
+    }
+
+    public override async Task HandleAsync(AddFeedbackCommentRequest request, CancellationToken ct)
+    {
+        Guid id = Route<Guid>("id");
+        Guid reporterUserId = User.GetUserId();
+
+        FeedbackReport? report = await dbContext.FeedbackReports.SingleOrDefaultAsync(candidate => candidate.Id == id, ct);
+
+        if (report is null || !FeedbackAccessRules.CanReporterComment(report, reporterUserId))
+        {
+            await SendNotFoundAsync(ct);
+            return;
+        }
+
+        DateTimeOffset now = DateTimeOffset.UtcNow;
+        FeedbackComment comment = CreateComment(report.Id, reporterUserId, "Reporter", request.Body.Trim(), now);
+        report.LastActivityAt = now;
+
+        dbContext.FeedbackComments.Add(comment);
+        await notificationService.AddReporterCommentNotificationsAsync(report, reporterUserId, ct);
+        await dbContext.SaveChangesAsync(ct);
+
+        await SendAsync(comment.ToTimelineDto(), StatusCodes.Status201Created, ct);
+    }
+
+    private FeedbackComment CreateComment(Guid reportId, Guid userId, string authorRole, string body, DateTimeOffset now)
+    {
+        return new FeedbackComment
+        {
+            Id = Guid.NewGuid(),
+            FeedbackReportId = reportId,
+            AuthorUserId = userId,
+            AuthorDisplayName = User.GetAlias() ?? User.GetName(),
+            AuthorEmail = User.GetEmail(),
+            AuthorRole = authorRole,
+            Body = body,
+            CreatedAt = now,
+        };
+    }
+}