Enforce phase for suggestions with joker allowance

Endpoints/SuggestEndpoints.cs

@@ -3,6 +3,7 @@ using GameList.Data;
 using GameList.Domain;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using GameList.Infrastructure;
 
 namespace GameList.Endpoints;
 
@@ -71,7 +72,6 @@ public static class SuggestEndpoints
             var usingJoker = phase == Phase.Vote && player.HasJoker;
             if (phase != Phase.Suggest && !usingJoker)
                 return EndpointHelpers.PhaseMismatch(Phase.Suggest, phase);
-
             if (string.IsNullOrWhiteSpace(player.DisplayName))
             {
                 return Results.BadRequest(new { error = "Set a display name before submitting suggestions." });
@@ -107,7 +107,8 @@ public static class SuggestEndpoints
             await db.SaveChangesAsync();
 
             return Results.Created($"/api/suggestions/{suggestion.Id}", new { suggestion.Id });
-        });
+        })
+        .AddEndpointFilter(new PhaseOrJokerFilter());
 
         group.MapDelete("/{id:int}", async (int id, HttpContext ctx, AppDbContext db) =>
         {