Initial commit

MetaCourse.Api/Endpoints/Topics/GetTopicEndpoint.cs

@@ -0,0 +1,39 @@
+using AutoMapper;
+using FastEndpoints;
+using MetaCourse.Api.Data;
+using MetaCourse.Api.DTOs.Topics;
+using Microsoft.EntityFrameworkCore;
+
+namespace MetaCourse.Api.Endpoints.Topics;
+
+public class GetTopicRequest
+{
+    public Guid Id { get; set; }
+}
+
+public class GetTopicEndpoint(AppDbContext db, AutoMapper.IMapper mapper) : Endpoint<GetTopicRequest, GetTopicDto>
+{
+    public override void Configure()
+    {
+        Get("api/topics/{id}");
+        AllowAnonymous();
+        Summary(s => s.Summary = "Récupère un sujet avec ses ressources");
+    }
+
+    public override async Task HandleAsync(GetTopicRequest req, CancellationToken ct)
+    {
+        var topic = await db.Topics
+            .AsNoTracking()
+            .Include(t => t.TopicResources.OrderBy(tr => tr.Position))
+                .ThenInclude(tr => tr.Resource)
+            .FirstOrDefaultAsync(t => t.Id == req.Id, ct);
+
+        if (topic is null)
+        {
+            await SendNotFoundAsync(ct);
+            return;
+        }
+
+        await SendOkAsync(mapper.Map<GetTopicDto>(topic), ct);
+    }
+}