using System;
using System.Collections;
using System.Collections.Generic;

namespace CommonLib.LOG
{
    public class RingList<T> : List<T>
    {
        private int first;
        private int last;
        //private int index;
        private int validSize;
        // private T current;
         

        public int MaxSize
        {
            get
            {
                return Capacity;
            }
            set
            {
                Capacity = value;
            }
        }

        public new void Add(T item)
        {
            if(Count< Capacity)
            {
                base.Add(item);
            }
            else
            { 
                this[this.last] = item;
                //this.Clear();
            }
            this.last = (this.last + 1) % Capacity;
            if (first == last)
            {
                first = (first + 1) % Capacity;
                return;
            }
            validSize++;
        }

        public T Get(int Index)
        {
            int Ptr = (Index + last) % Count;
            return this[Ptr]; 
        }

        public void Remove()
        {
            if (this.first == this.last)
            {
                throw new InvalidOperationException();
            }
            this[first] = default(T);
            first = (this.first + 1) % Capacity;
            validSize--;
        }
        public new void Clear()
        {
            if (this.validSize > 0)
            {
                base.Clear();
                this.validSize = 0;
            }
        }
    }

    public enum LogLevel
    { 
        Error=0,
        Warning,
        Trace ,
        DIO, 
        Network, 
        Ports, 
        PLC,
        MOTOR_Error,


        Error1,
        Error2,

    }
}