Mail support

microservices/CharacterApi/Controllers/CharactersController.cs

@@ -2,6 +2,7 @@ using CharacterApi.Models;
 using CharacterApi.Services;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
+using MongoDB.Driver;
 using System.Net.Http.Headers;
 using System.Security.Claims;
 using System.Text;
@@ -47,10 +48,18 @@ public class CharactersController : ControllerBase
             LastSeenUtc = DateTime.UtcNow,
             CreatedUtc = DateTime.UtcNow
         };
-
-        await _characters.CreateAsync(character);
-        return Ok(character);
-    }
+
+        try
+        {
+            await _characters.CreateAsync(character);
+        }
+        catch (MongoWriteException ex) when (ex.WriteError.Category == ServerErrorCategory.DuplicateKey)
+        {
+            return Conflict("Character name is already taken");
+        }
+
+        return Ok(character);
+    }
 
     [HttpGet]
     [Authorize(Roles = "USER,SUPER")]