Added endpoint to add user in group

BeReadyBackend/Endpoints/Groups/AddUserToGroupEndpoint.cs

@@ -0,0 +1,48 @@
+using BeReadyBackend.Models;
+using BeReadyBackend.Repositories;
+using BeReadyBackend.Services;
+using BeReadyBackend.Specifications.Groups;
+using FastEndpoints;
+
+namespace BeReadyBackend.Endpoints.Groups;
+
+public class AddUserToGroupRequest
+{
+    public int UserId { get; set; }
+    public int GroupId { get; set; }
+}
+
+public class AddUserToGroupEndpoint(UserService userService, UserGroupsRepository userGroupsRepository, AutoMapper.IMapper mapper) : Endpoint<AddUserToGroupRequest>
+{
+    public override void Configure()
+    {
+        Post("/Groups/{@GroupId}/Users/{@UserId}/", x => new { x.GroupId, x.UserId });
+    }
+
+    public override async Task HandleAsync(AddUserToGroupRequest req, CancellationToken ct)
+    {
+        int userId = userService.GetUserIdFromToken();
+
+        UserGroup? member = await userGroupsRepository.SingleOrDefaultAsync(new GetUserInGroupByIdsSpec(req.GroupId, userId), ct);
+
+        if (member is null)
+        {
+            await Send.StringAsync("Vous n'êtes pas dans ce groupe", 400, cancellation: ct);
+            return;
+        }
+
+        UserGroup? userGroup = await userGroupsRepository.SingleOrDefaultAsync(new GetUserInGroupByIdsSpec(req.GroupId, req.UserId), ct);
+        if (userGroup is not null)
+        {
+            await Send.StringAsync("L'utilisateur fait déjà partie du groupe", 400, cancellation: ct);
+            return;
+        }
+
+        userGroup = mapper.Map<UserGroup>(req);
+        userGroup.Grade = "Member";
+        userGroup.Score = 0;
+
+        await userGroupsRepository.AddAsync(userGroup, ct);
+        await Send.NoContentAsync(ct);
+    }
+}

BeReadyBackend/Endpoints/Groups/CreateGroupEndpoint.cs

@@ -24,7 +24,7 @@ public class CreateGroupEndpoint(
     {
         int userId = userService.GetUserIdFromToken();
 
-        Group? group = new();
+        Group group = new();
         mapper.Map(req, group);
         group.IsFinished = false;
         group.CreationDate = DateTime.Now;