public static Token CheckPermitions(string authHeader, IDbConnection db) { if (authHeader.IsNullOrEmpty()) return null; if (!authHeader.StartsWith("Bearer ", StringComparison.Ordinal)) return null; Guid token; if (!Guid.TryParse(authHeader.Substring(7), out token)) return null; var dbToken = db.FirstOrDefaultById<Token>(token); if (dbToken == null || dbToken.ExpiresIn < DateTime.Now) return null; dbToken.ExpiresIn = DateTime.Now + TimeSpan.FromDays(7); db.Update(dbToken); return dbToken; }