// <summary>
        /// Helper function to convert service simple schedule policy from ps schedule policy.
        /// </summary>
        public static ServiceClientModel.SchedulePolicy GetServiceClientSimpleSchedulePolicy(
            SchedulePolicyBase psPolicy)
        {
            if (psPolicy == null)
            {
                return(null);
            }

            if (psPolicy.GetType() == typeof(SimpleSchedulePolicy))
            {
                SimpleSchedulePolicy schPolicy = (SimpleSchedulePolicy)psPolicy;
                ServiceClientModel.SimpleSchedulePolicy serviceClientPolicy = new ServiceClientModel.SimpleSchedulePolicy();

                serviceClientPolicy.ScheduleRunFrequency = ServiceClientHelpers.GetServiceClientScheduleRunType(schPolicy.ScheduleRunFrequency);

                if (schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly)
                {
                    serviceClientPolicy.ScheduleRunDays = HelperUtils.EnumListConverter <DayOfWeek, ServiceClientModel.DayOfWeek>(
                        schPolicy.ScheduleRunDays).Cast <ServiceClientModel.DayOfWeek?>().ToList();
                }

                if (schPolicy.ScheduleRunFrequency != ScheduleRunType.Hourly)
                {
                    serviceClientPolicy.ScheduleRunTimes = schPolicy.ScheduleRunTimes.ConvertAll(dateTime => (DateTime?)dateTime);
                }
                else
                {
                    serviceClientPolicy.HourlySchedule          = new ServiceClientModel.HourlySchedule();
                    serviceClientPolicy.HourlySchedule.Interval = schPolicy.ScheduleInterval;
                    serviceClientPolicy.HourlySchedule.ScheduleWindowDuration  = schPolicy.ScheduleWindowDuration;
                    serviceClientPolicy.HourlySchedule.ScheduleWindowStartTime = schPolicy.ScheduleWindowStartTime;
                }
                return(serviceClientPolicy);
            }

            else if (psPolicy.GetType() == typeof(SimpleSchedulePolicyV2))
            {
                SimpleSchedulePolicyV2 schPolicyV2 = (SimpleSchedulePolicyV2)psPolicy;
                ServiceClientModel.SimpleSchedulePolicyV2 serviceClientPolicyV2 = new ServiceClientModel.SimpleSchedulePolicyV2();

                serviceClientPolicyV2.ScheduleRunFrequency = ServiceClientHelpers.GetServiceClientScheduleRunType(schPolicyV2.ScheduleRunFrequency);

                if (schPolicyV2.ScheduleRunFrequency == ScheduleRunType.Weekly)
                {
                    serviceClientPolicyV2.WeeklySchedule = new ServiceClientModel.WeeklySchedule();
                    serviceClientPolicyV2.WeeklySchedule.ScheduleRunDays = HelperUtils.EnumListConverter <DayOfWeek, ServiceClientModel.DayOfWeek>(
                        schPolicyV2.WeeklySchedule.ScheduleRunDays).Cast <ServiceClientModel.DayOfWeek?>().ToList();

                    serviceClientPolicyV2.WeeklySchedule.ScheduleRunTimes = schPolicyV2.WeeklySchedule.ScheduleRunTimes.ConvertAll(dateTime => (DateTime?)dateTime);
                }
                else if (schPolicyV2.ScheduleRunFrequency == ScheduleRunType.Daily)
                {
                    serviceClientPolicyV2.DailySchedule = new ServiceClientModel.DailySchedule();
                    serviceClientPolicyV2.DailySchedule.ScheduleRunTimes = schPolicyV2.DailySchedule.ScheduleRunTimes.ConvertAll(dateTime => (DateTime?)dateTime);
                }
                else if (schPolicyV2.ScheduleRunFrequency == ScheduleRunType.Hourly)
                {
                    serviceClientPolicyV2.HourlySchedule          = new ServiceClientModel.HourlySchedule();
                    serviceClientPolicyV2.HourlySchedule.Interval = schPolicyV2.HourlySchedule.Interval;
                    serviceClientPolicyV2.HourlySchedule.ScheduleWindowDuration  = schPolicyV2.HourlySchedule.WindowDuration;
                    serviceClientPolicyV2.HourlySchedule.ScheduleWindowStartTime = schPolicyV2.HourlySchedule.WindowStartTime;
                }
                return(serviceClientPolicyV2);
            }

            return(null);
        }
        // <summary>
        /// Helper function to convert ps simple schedule policy from service response.
        /// </summary>
        public static SimpleSchedulePolicyV2 GetPSSimpleSchedulePolicyV2(
            ServiceClientModel.SimpleSchedulePolicyV2 serviceClientPolicy, string timeZone)
        {
            if (serviceClientPolicy == null)
            {
                return(null);
            }

            SimpleSchedulePolicyV2 psPolicy = new SimpleSchedulePolicyV2();

            psPolicy.ScheduleRunFrequency = (ScheduleRunType)Enum.Parse(typeof(ScheduleRunType), serviceClientPolicy.ScheduleRunFrequency.ToString());

            if (psPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly)
            {
                psPolicy.WeeklySchedule = new WeeklySchedule();

                int offset = 0;
                if (serviceClientPolicy.WeeklySchedule != null)
                {
                    psPolicy.WeeklySchedule.ScheduleRunDays  = HelperUtils.EnumListConverter <ServiceClientModel.DayOfWeek?, DayOfWeek>(serviceClientPolicy.WeeklySchedule.ScheduleRunDays);
                    psPolicy.WeeklySchedule.ScheduleRunTimes = ParseDateTimesToUTC(serviceClientPolicy.WeeklySchedule.ScheduleRunTimes, timeZone);

                    offset = psPolicy.WeeklySchedule.ScheduleRunTimes[0].DayOfWeek.GetHashCode() - serviceClientPolicy.WeeklySchedule.ScheduleRunTimes[0].Value.DayOfWeek.GetHashCode();
                }

                for (int index = 0; index < psPolicy.WeeklySchedule.ScheduleRunDays.Count(); index++)
                {
                    if (offset == -1)
                    {
                        int value = psPolicy.WeeklySchedule.ScheduleRunDays[index].GetHashCode() - 1;
                        if (value == -1)
                        {
                            value = 6;
                        }

                        psPolicy.WeeklySchedule.ScheduleRunDays[index] = (DayOfWeek)value;
                    }
                    else if (offset == 1)
                    {
                        int value = psPolicy.WeeklySchedule.ScheduleRunDays[index].GetHashCode() + 1;
                        if (value == 7)
                        {
                            value = 0;
                        }
                        psPolicy.WeeklySchedule.ScheduleRunDays[index] = (DayOfWeek)value;
                    }
                }
            }
            else if (psPolicy.ScheduleRunFrequency == ScheduleRunType.Hourly)
            {
                psPolicy.HourlySchedule = new HourlySchedule();

                // multiple backups per day
                psPolicy.HourlySchedule.Interval        = serviceClientPolicy.HourlySchedule.Interval;
                psPolicy.HourlySchedule.WindowStartTime = serviceClientPolicy.HourlySchedule.ScheduleWindowStartTime;
                psPolicy.HourlySchedule.WindowDuration  = serviceClientPolicy.HourlySchedule.ScheduleWindowDuration;
            }
            else
            {
                psPolicy.DailySchedule = new DailySchedule();
                psPolicy.DailySchedule.ScheduleRunTimes = (serviceClientPolicy.DailySchedule != null) ? ParseDateTimesToUTC(serviceClientPolicy.DailySchedule.ScheduleRunTimes, timeZone) : null;
            }

            psPolicy.ScheduleRunTimeZone = timeZone;

            // safe side validation
            psPolicy.Validate();

            return(psPolicy);
        }
        // <summary>
        /// Helper function to validate long term rentention policy and simple schedule policy.
        /// </summary>
        public static void ValidateLongTermRetentionPolicyWithSimpleRetentionPolicy(
            LongTermRetentionPolicy ltrPolicy,
            SimpleSchedulePolicyV2 schPolicy)
        {
            // for daily schedule, daily retention policy is required
            if (schPolicy.ScheduleRunFrequency == ScheduleRunType.Daily &&
                (ltrPolicy.DailySchedule == null || ltrPolicy.IsDailyScheduleEnabled == false))
            {
                throw new ArgumentException(Resources.DailyRetentionScheduleNullException);
            }

            // for weekly schedule, daily retention policy should be NULL
            // AND weekly retention policy is required
            if (schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly &&
                (ltrPolicy.IsDailyScheduleEnabled != false || ltrPolicy.WeeklySchedule == null ||
                 (ltrPolicy.IsWeeklyScheduleEnabled == false)))
            {
                throw new ArgumentException(Resources.WeeklyRetentionScheduleNullException);
            }

            // validating retention duration counts for hourly AFS policy
            ValidateDurationCountsForHourlyPolicy(ltrPolicy, schPolicy);

            // validate daily retention schedule with schPolicy
            if (ltrPolicy.DailySchedule != null && ltrPolicy.IsDailyScheduleEnabled == true)
            {
                if (schPolicy.ScheduleRunFrequency == ScheduleRunType.Daily)
                {
                    ValidateRetentionAndBackupTimes(schPolicy.DailySchedule.ScheduleRunTimes, ltrPolicy.DailySchedule.RetentionTimes, schPolicy.ScheduleRunFrequency);
                }
            }

            // validate weekly retention schedule with schPolicy
            if (ltrPolicy.WeeklySchedule != null && ltrPolicy.IsWeeklyScheduleEnabled == true)
            {
                List <DateTime> scheduleTime = (schPolicy.ScheduleRunFrequency == ScheduleRunType.Daily) ? schPolicy.DailySchedule.ScheduleRunTimes : ((schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly) ? schPolicy.WeeklySchedule.ScheduleRunTimes : null);

                ValidateRetentionAndBackupTimes(scheduleTime, ltrPolicy.WeeklySchedule.RetentionTimes, schPolicy.ScheduleRunFrequency);

                if (schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly)
                {
                    // count of daysOfWeek should match for weekly schedule
                    if (ltrPolicy.WeeklySchedule.DaysOfTheWeek.Count != schPolicy.WeeklySchedule.ScheduleRunDays.Count)
                    {
                        throw new ArgumentException(Resources.DaysofTheWeekInWeeklyRetentionException);
                    }

                    // validate days of week
                    ValidateRetentionAndScheduleDaysOfWeek(schPolicy.WeeklySchedule.ScheduleRunDays, ltrPolicy.WeeklySchedule.DaysOfTheWeek);
                }
            }

            // validate monthly retention schedule with schPolicy
            if (ltrPolicy.MonthlySchedule != null && ltrPolicy.IsMonthlyScheduleEnabled == true)
            {
                List <DateTime> scheduleTime = (schPolicy.ScheduleRunFrequency == ScheduleRunType.Daily) ? schPolicy.DailySchedule.ScheduleRunTimes : ((schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly) ? schPolicy.WeeklySchedule.ScheduleRunTimes : null);

                ValidateRetentionAndBackupTimes(scheduleTime, ltrPolicy.MonthlySchedule.RetentionTimes, schPolicy.ScheduleRunFrequency);

                // if backupSchedule is weekly, then user cannot choose 'Daily Retention format'
                if (schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly &&
                    ltrPolicy.MonthlySchedule.RetentionScheduleFormatType == RetentionScheduleFormat.Daily)
                {
                    throw new ArgumentException(Resources.MonthlyYearlyInvalidDailyRetentionFormatTypeException);
                }

                // for monthly and weeklyFormat, validate days of week
                if (ltrPolicy.MonthlySchedule.RetentionScheduleFormatType
                    == RetentionScheduleFormat.Weekly &&
                    schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly)
                {
                    ValidateRetentionAndScheduleDaysOfWeek(schPolicy.WeeklySchedule.ScheduleRunDays,
                                                           ltrPolicy.MonthlySchedule.RetentionScheduleWeekly.DaysOfTheWeek);
                }
            }

            // validate yearly retention schedule with schPolicy
            if (ltrPolicy.YearlySchedule != null && ltrPolicy.IsYearlyScheduleEnabled == true)
            {
                List <DateTime> scheduleTime = (schPolicy.ScheduleRunFrequency == ScheduleRunType.Daily) ? schPolicy.DailySchedule.ScheduleRunTimes : ((schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly) ? schPolicy.WeeklySchedule.ScheduleRunTimes : null);

                ValidateRetentionAndBackupTimes(scheduleTime, ltrPolicy.YearlySchedule.RetentionTimes, schPolicy.ScheduleRunFrequency);

                // if backupSchedule is weekly, then user cannot choose 'Daily Retention format'
                if (schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly &&
                    ltrPolicy.YearlySchedule.RetentionScheduleFormatType
                    == RetentionScheduleFormat.Daily)
                {
                    throw new ArgumentException(Resources.MonthlyYearlyInvalidDailyRetentionFormatTypeException);
                }

                // for yearly and weeklyFormat, validate days of week
                if (ltrPolicy.YearlySchedule.RetentionScheduleFormatType
                    == RetentionScheduleFormat.Weekly &&
                    schPolicy.ScheduleRunFrequency == ScheduleRunType.Weekly)
                {
                    ValidateRetentionAndScheduleDaysOfWeek(schPolicy.WeeklySchedule.ScheduleRunDays,
                                                           ltrPolicy.YearlySchedule.RetentionScheduleWeekly.DaysOfTheWeek);
                }
            }
        }