using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Core
{
    public class SelectData
    {
        #region Public Properties

        public DateTime DateEnd { get; set; } = DateTime.Now.AddMinutes(1);
        public DateTime DateStart { get; set; } = DateTime.Now.AddDays(-7);

        #endregion Public Properties

        #region Public Methods

        /// <summary>
        /// Inizializzazione con periodo e arrotondamento
        /// </summary>
        /// <param name="minRound"></param>
        /// <param name="numDayPrev">Num giorni PREVIOUS (indietro) per start</param>
        /// <returns></returns>
        public static SelectData Init(int minRound, int numDayPrev)
        {
            // se numDayPrev è < 0 --> start oggi e va al futuro
            int dayOffset = numDayPrev > 0 ? 1 : -numDayPrev;
            DateTime endRounded = DateTime.Today.AddDays(dayOffset);
            SelectData answ = new SelectData()
            {
                DateEnd = endRounded,
                DateStart = endRounded.AddDays(-Math.Abs(numDayPrev))
            };
            return answ;
        }

        public override bool Equals(object obj)
        {
            if (!(obj is SelectData item))
                return false;

            if (DateEnd != item.DateEnd)
                return false;
            if (DateStart != item.DateStart)
                return false;

            return true;
        }

        public override int GetHashCode()
        {
            return base.GetHashCode();
        }

        #endregion Public Methods
    }
}