using System;
using System.Threading.Tasks;

namespace OversightService.Services
{
    /// <summary>
    /// Base interface for scheduled tasks
    /// </summary>
    public interface IScheduledTask
    {
        string TaskName { get; }
        TimeSpan Interval { get; }
        DateTime? LastRun { get; set; }
        Task ExecuteAsync();
        bool ShouldRun();
    }

    /// <summary>
    /// Base class for scheduled tasks with common logic
    /// </summary>
    public abstract class ScheduledTask : IScheduledTask
    {
        public abstract string TaskName { get; }
        public abstract TimeSpan Interval { get; }
        public DateTime? LastRun { get; set; }

        public abstract Task ExecuteAsync();

        public virtual bool ShouldRun()
        {
            if (LastRun == null) return true;
            return DateTime.Now - LastRun >= Interval;
        }
    }
}