using System;
using NCrontab;
using Serilog;
using LCU.Library.Internal.DispatcherModels.Entities;
using LCU.Library.Internal.DispatcherModels.Enums;
namespace LCU.Api.Internal.DispatcherSharedLib.Utilities;

public static class CronHelpers
{
    public static void SetNextScheduledRunTime(ref Job job)
    {
        var isCronSchedule = !string.IsNullOrEmpty(job.CronSchedule);
        if (isCronSchedule)
        {
            CrontabSchedule schedule = CrontabSchedule.Parse(job.CronSchedule);
            job.NextRunTime = schedule.GetNextOccurrence(DateTime.Now); 
            
            if (job.SkipHolidays)
            {
                job.NextRunTime = HolidayHelpers.HandleHolidays(job.NextRunTime);
            }
            job.JobStatus = JobStatus.ReadyToSchedule;
        }
    }

    public static CrontabSchedule SetCronSchedule(string cron, string cronDefault)
    {
        try
        {
            return CrontabSchedule.Parse(cron);
        }
        catch (Exception exception)
        {
            Log.Error(exception, "Failure parsing cron-tab in appsettings.");
            return CrontabSchedule.Parse(cronDefault);
        }
    }
}