using System;

namespace SepCore.Timer
{
    /// <summary>
    /// 定时任务句柄。
    /// </summary>
    public readonly struct TimerHandle : IEquatable<TimerHandle>
    {
        public static readonly TimerHandle Invalid = new TimerHandle(0);

        public TimerHandle(int id)
        {
            Id = id;
        }

        /// <summary>
        /// 获取定时任务编号。
        /// </summary>
        public int Id
        {
            get;
        }

        /// <summary>
        /// 获取句柄是否有效。
        /// </summary>
        public bool IsValid => Id > 0;

        public bool Equals(TimerHandle other)
        {
            return Id == other.Id;
        }

        public override bool Equals(object obj)
        {
            return obj is TimerHandle other && Equals(other);
        }

        public override int GetHashCode()
        {
            return Id;
        }

        public static bool operator ==(TimerHandle left, TimerHandle right)
        {
            return left.Equals(right);
        }

        public static bool operator !=(TimerHandle left, TimerHandle right)
        {
            return !left.Equals(right);
        }
    }
}