public InsurancePolicy CreateAndSavePolicy(params Vehicle[] vehicles)
        {
            InsurancePolicy policy = new InsurancePolicy();

            foreach (Vehicle vehicle in vehicles)
            {
                Risk newRisk = new Risk();
                newRisk.InsuredVehicle = vehicle;

                // Basic Premium
                newRisk.Premium = 100;

                if (VehicleType.MotorCycle == vehicle.Type)
                {
                    if (vehicle.HorsePower > 120)
                    {
                        throw new ArgumentException("Motorcycles above 120 horsepower cannot be insured");
                    }
                    if (vehicle.HorsePower > 20)
                    {
                        newRisk.Premium = newRisk.Premium * 2;
                    }
                    if (vehicle.HorsePower > 60)
                    {
                        newRisk.Premium = newRisk.Premium * 2;
                    }
                }
                else if (VehicleType.Car == vehicle.Type)
                {
                    newRisk.Premium = newRisk.Premium * 4;
                    if (vehicle.HorsePower > 100)
                    {
                        newRisk.Premium = newRisk.Premium * 2;
                    }
                }
                else if (VehicleType.Car == vehicle.Type)
                {
                    // Flatrate
                    newRisk.Premium = newRisk.Premium * 10;
                }

                policy.AddRisk(newRisk);
            }

            policy.PolicyNr = Guid.NewGuid().ToString();

            string[] lines = new string[policy.GetNumberOfRisks() + 2];
            lines[0] = policy.PolicyNr;
            lines[1] = policy.Premium.ToString();
            for (int i = 0; i < policy.GetNumberOfRisks(); i++)
            {
                Risk risk = policy.GetRisk(i);
                lines[i + 2] = String.Format("{0},{1},{2}",
                                             risk.Premium, risk.InsuredVehicle.RegistrationId, risk.InsuredVehicle.Type);
            }

            System.IO.File.WriteAllLines("/Temp/policy.txt", lines);

            return(policy);
        }
        public InsurancePolicy InsureVehicles(params Vehicle[] vehicles)
        {
            InsurancePolicy policy = new InsurancePolicy();

            policy.PolicyNr = GeneratePolicyNr();

            foreach (Vehicle vehicle in vehicles)
            {
                policy.AddRisk(CreateVehicleRisk(vehicle));
            }

            return(policy);
        }