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

namespace IStation.Model.Monitor
{
    /// <summary>
    /// 小时段
    /// </summary>
    public class HourSlot : JsonModel<HourSlot>, ICronSlot
    {
        /// <summary>
        /// 是否从前一小时开始
        /// </summary>
        public bool Pre { get; set; } = false;

        /// <summary>
        /// 开始分钟 0-59
        /// </summary>
        public int Start { get; set; } = 0;

        /// <summary>
        /// 结束分钟 1-60
        /// </summary>
        public int End { get; set; } = 60;

        /// <summary>
        /// 验证
        /// </summary>
        /// <returns></returns>
        public bool Verify()
        {
            if (this.Start < 0 || this.Start > 59)
                return false;
            if (this.End < 1 || this.End > 60)
                return false;
            var start = this.Start;
            var end = this.End;
            if (this.Pre)
            {
                end += 60;
            }
            if (end - start > 60)
                return false;
            if (end - start <= 0)
                return false;
            return true;
        }

        /// <summary>
        /// 获取开始时间
        /// </summary>
        public DateTime GetStartTime(DateTime rhs)
        {
            var start = 0;
            if (Verify())
            {
                start = this.Start;
                if (Pre)
                    start = start - 60;
            }
            var dt = new DateTime(rhs.Year, rhs.Month, rhs.Day, rhs.Hour, 0, 0);
            dt = dt.AddHours(-1);
            dt = dt.AddSeconds(start);
            return dt;
        }

        /// <summary>
        /// 获取结束时间
        /// </summary>
        public DateTime GetEndTime(DateTime rhs)
        {
            var end = 60;
            if (Verify())
                end = this.End;
            var dt = new DateTime(rhs.Year, rhs.Month, rhs.Day, rhs.Hour, 0, 0);
            dt = dt.AddHours(-1);
            dt = dt.AddSeconds(end);
            return dt;
        }

    }
}