Verrouille le nom d'utilisateur en edition admin

ChessCubing.Server/Program.cs

@@ -251,8 +251,9 @@ adminGroup.MapPut("/users/{subject}", async Task<IResult> (
 {
     try
     {
+        var existingIdentity = await keycloak.GetAdminUserAsync(subject, cancellationToken);
         var normalized = NormalizeAdminUpdate(request);
-        var fallbackDisplayName = BuildIdentityDisplayNameFromParts(normalized.FirstName, normalized.LastName, normalized.Username);
+        var fallbackDisplayName = BuildIdentityDisplayNameFromParts(normalized.FirstName, normalized.LastName, existingIdentity.Username);
         var siteProfileRequest = new UpdateUserProfileRequest
         {
             DisplayName = request.DisplayName,
@@ -268,7 +269,7 @@ adminGroup.MapPut("/users/{subject}", async Task<IResult> (
         var updatedIdentity = await keycloak.UpdateAdminUserAsync(
             subject,
             new AdminIdentityUserUpdateRequest(
-                normalized.Username,
+                existingIdentity.Username,
                 normalized.Email,
                 normalized.FirstName,
                 normalized.LastName,
@@ -421,13 +422,11 @@ static AdminUserDetailResponse MapAdminDetail(AdminIdentityUser identity, UserPr
 
 static NormalizedAdminUserUpdate NormalizeAdminUpdate(AdminUpdateUserRequest request)
 {
-    var username = NormalizeRequiredValue(request.Username, "nom d'utilisateur", 120);
     var email = NormalizeEmail(request.Email);
     var firstName = NormalizeOptionalValue(request.FirstName, "prenom", 120);
     var lastName = NormalizeOptionalValue(request.LastName, "nom", 120);
 
     return new NormalizedAdminUserUpdate(
-        username,
         email,
         firstName,
         lastName,
@@ -575,7 +574,6 @@ static async Task SignInAsync(HttpContext httpContext, KeycloakUserInfo userInfo
 }
 
 sealed record NormalizedAdminUserUpdate(
-    string Username,
     string? Email,
     string? FirstName,
     string? LastName,