using Ems.CollectService.Common;
using NLog;
using System;
using System.IO;

namespace Ems.CollectService.Timer
{
    /// <summary>
    /// 删除日志文件
    /// </summary>
    public sealed class DeleteLogFile
    {
        private Logger logger = LogManager.GetCurrentClassLogger();
        private System.Timers.Timer timer = new System.Timers.Timer(1000*60*60);

        private static readonly Lazy<DeleteLogFile> lazy = new Lazy<DeleteLogFile>(() => new DeleteLogFile());

        public static DeleteLogFile Instance
        {
            get
            {
                return lazy.Value;
            }
        }

        private DeleteLogFile() { }

        /// <summary>
        /// 删除日志定时器
        /// </summary>
        public void DeleteLogFileTimer()
        {
            try
            {
                if (!timer.Enabled)
                {
                    timer.Elapsed += new System.Timers.ElapsedEventHandler(DeleteLogFileTick);
                    timer.AutoReset = true;
                    timer.Enabled = false;
                    timer.Start();
                    logger.Info("删除日志文件夹定时器启动成功");
                }
            }
            catch (Exception ex)
            {
                logger.Error($"StartTimerDeleteLogFile定时删除日志文件异常{ex.Message}");
            }
        }

        /// <summary>
        /// 删除指定路径下的超时文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DeleteLogFileTick(object sender, EventArgs e)
        {
            try
            {
                string fileDirect = "C:\\能源项目文件夹\\采集服务\\Log";
                int saveDay = 1;
                logger.Info($"定时删除路径：{fileDirect}；下超过：{saveDay}天的日志文件夹");
                DateTime nowTime = DateTime.Now;
                DirectoryInfo root = new DirectoryInfo(fileDirect);
                DirectoryInfo[] dics = root.GetDirectories();

                FileAttributes attr = File.GetAttributes(fileDirect);
                if (attr == FileAttributes.Directory)
                {
                    foreach (DirectoryInfo file in dics)
                    {
                        TimeSpan t = nowTime - file.CreationTime;
                        int day = t.Days;
                        if (day > saveDay)
                        {

                            Directory.Delete(file.FullName, true); 
                        }
                    }

                }
            }
            catch (Exception ex)
            {
                logger.Error($"删除日志文件夹异常{ex.Message}");
            }
        }

    }
}