private bool ValidatePatchRequset(CompanyUsersApiPatchRequest req)
 {
     if (req.UserId <= 0)
     {
         return(false);
     }
     if (req.CompanyUserId <= 0)
     {
         return(false);
     }
     if (req.AuthToken == null)
     {
         return(false);
     }
     if (req.LoginToken == null)
     {
         return(false);
     }
     if ((req.AccessLevel & AccessLevelMasks.MechanicMask) != 0 && req.AccessLevel > -1 && req.AccessLevel < 16)
     {
         return(true);
     }
     return(false);
 }
        private void HandlePatchRequest(HttpListenerContext ctx)
        {
            try
            {
                #region Input Validation
                if (!ctx.Request.HasEntityBody)
                {
                    WriteBodyResponse(ctx, 400, "Bad Request", "No Body");
                    return;
                }
                CompanyUsersApiPatchRequest entry = JsonDataObjectUtil <CompanyUsersApiPatchRequest> .ParseObject(ctx);

                if (!ValidatePatchRequset(entry))
                {
                    WriteBodyResponse(ctx, 400, "Bad Request", "Incorrect Format");
                    return;
                }
                #endregion

                MySqlDataManipulator connection = new MySqlDataManipulator();
                using (connection)
                {
                    bool res = connection.Connect(MySqlDataManipulator.GlobalConfiguration.GetConnectionString());
                    if (!res)
                    {
                        WriteBodyResponse(ctx, 500, "Unexpected Server Error", "Connection to database failed");
                        return;
                    }
                    #region User Validation
                    OverallUser mappedUser = connection.GetUserById(entry.UserId);
                    if (mappedUser == null)
                    {
                        WriteBodyResponse(ctx, 404, "Not Found", "User was not found on on the server");
                        return;
                    }
                    if (!UserVerificationUtil.LoginTokenValid(mappedUser, entry.LoginToken))
                    {
                        WriteBodyResponse(ctx, 401, "Not Authorized", "Login token was incorrect.");
                        return;
                    }
                    if (!UserVerificationUtil.AuthTokenValid(mappedUser, entry.AuthToken))
                    {
                        WriteBodyResponse(ctx, 401, "Not Authorized", "Auth token was incorrect.");
                        return;
                    }
                    if ((mappedUser.AccessLevel & AccessLevelMasks.AdminMask) == 0)
                    {
                        WriteBodyResponse(ctx, 401, "Not Authorized", "User was not an admin");
                        return;
                    }
                    #endregion

                    #region Action Handling
                    OverallUser user = connection.GetUserById(entry.CompanyUserId);
                    if (user == null)
                    {
                        WriteBodyResponse(ctx, 404, "Not Found", "Company User was not found on the server");
                        return;
                    }
                    user.AccessLevel = entry.AccessLevel;
                    if (!connection.UpdateUserAccessLevel(user))
                    {
                        WriteBodyResponse(ctx, 500, "Internal Server Error", "Error occurred while updating user's access level: " + connection.LastException.Message);
                        return;
                    }
                    WriteBodylessResponse(ctx, 200, "OK");
                    #endregion
                }
            }
            catch (Exception e)
            {
                WriteBodyResponse(ctx, 500, "Internal Server Error", e.Message);
            }
        }