using System;
using System.Diagnostics;
using System.Reflection;
using System.Timers;
using SHJX.Service.Common.Logging;
using Microsoft.Extensions.Logging;
namespace SHJX.Service.Common.UserTimer
{
    /// <summary>
    /// Timer封装类，定义过程统一
    /// </summary>
    public class TimerProcessor
    {

        private static readonly ILogger logger = LogFactory.BuildLogger(typeof(TimerProcessor));
        private readonly string _timerName;
        public event Action OnTimer;
        private readonly Timer _timer;
        private bool _timerActive;
        private int _heartBeat;

        public TimerProcessor(string timerName, double interval)
        {
            _timerName = timerName;
            _timer = new Timer
            {
                Interval = interval
            };
            _timer.Elapsed += Timer_Elapsed;
        }

        [DebuggerStepThrough]
        private void Timer_Elapsed(object sender, ElapsedEventArgs e)
        {
            if (_timerActive)
                return;
            if (++_heartBeat >= int.MaxValue)
                _heartBeat = 0;
            var sw = new Stopwatch();
            sw.Start();
            try
            {
                _timerActive = true;
                OnTimer?.Invoke();
            }
            catch (Exception exception)
            {
                logger.LogError("The timer {0} has a exception {1}", _timerName, exception.Message);
            }
            finally
            {
                sw.Stop();
                _timerActive = false;
            }
        }

        public void Start()
        {
            if (_timer.Enabled) return;
            _timer.Enabled = true;
            logger.LogDebug("The timer {0} started.", this._timerName);
        }

        public void Stop()
        {
            if (!_timer.Enabled) return;
            _timer.Enabled = false;
            logger.LogDebug("The timer {0} stopped.", this._timerName);
        }

        public double GetInterval()
        {
            return _timer.Interval;
        }
    }
}