using System;
using FluentScheduler;
using System.Web.Hosting;
using Face.Log4Net;

namespace Face.SystemTask
{
    #region PlanJobBase 对IIS回收做处理
    internal abstract class JobBase : IJob, IRegisteredObject
    {
        /// <summary>
        /// 锁
        /// </summary>
        private readonly object _lock = new object();
        /// <summary>
        /// 是否已经在回收中
        /// </summary>
        private bool _shuttingDown;

        /// <summary>
        /// 初始化注册
        /// </summary>
        public JobBase()
        {
            HostingEnvironment.RegisterObject(this);
        }

        /// <summary>
        /// 重写执行代码方法继承
        /// </summary>
        public abstract void Plan();

        /// <summary>
        /// 重写执行
        /// </summary>
        public void Execute()
        {
            try
            {
                lock (_lock)
                {
                    if (_shuttingDown)
                        return;
                    Plan();//执行任务
                }
            }
            finally
            {
                HostingEnvironment.UnregisterObject(this);
            }
        }

        /// <summary>
        /// 重写执行代码方法继承 带参数
        /// </summary>
        public virtual void Plan(params object[] obj) { }

        /// <summary>
        /// 重写执行 带参数
        /// </summary>
        public void Execute(params object[] obj)
        {
            try
            {
                lock (_lock)
                {
                    if (_shuttingDown)
                        return;
                    Plan(obj);//执行任务
                }
            }
            finally
            {
                HostingEnvironment.UnregisterObject(this);
            }
        }

        /// <summary>
        /// 回收调用
        /// </summary>
        /// <param name="immediate"></param>
        public void Stop(bool immediate)
        {
            JobManager.RemoveAllJobs();//移除所有定时计划，防止秒级定时计划堆叠执行
            Log4NetHelper.Log("调用stop：" + DateTime.Now);
            lock (_lock)
            {
                Log4NetHelper.Log("lock结束：" + DateTime.Now);
                _shuttingDown = true;
            }
            HostingEnvironment.UnregisterObject(this);
        }
    }
    #endregion
}