using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ImportDate
{
    public class LogManager
    { 
        /// <summary>
        /// 重要信息log
        /// </summary>
        /// <param name="logs"></param>

        public static void MessageLog(params string[] logs)
        {
            try
            {

                object locker = new object();
                lock (locker)
                {
                    string path = Environment.CurrentDirectory + "//" + DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + ".log";
                    //判断文件是否存在，没有则创建。
                    if (!System.IO.File.Exists(path))
                    {
                        FileStream stream = System.IO.File.Create(path);
                        stream.Close();
                        stream.Dispose();
                    }
                    StreamWriter sw = new StreamWriter(path, true);
                    foreach (string log in logs)
                    {
                        sw.WriteLine(string.Format("[{0}]  {1}", DateTime.Now.ToString(), log));
                    }
                    sw.Close();
                    //long size = 0;
                    //using (FileStream file = System.IO.File.OpenRead(path))
                    //{
                    //    size = file.Length;   //byte
                    //}
                    //文件大于1M，自动删除。
                    //if (size > (1024 * 3))
                    //{
                    //    System.IO.File.Delete(path);
                    //}
                }
            }
            catch (Exception ex)
            {
                ErrorLog(ex, "");
            }
        }

        /// <summary>
        /// 将异常打印自定义的log文件里
        /// </summary>
        /// <param name="ex"></param>
        /// <param name="LogAddress"></param>
        public static void ErrorLog(Exception ex, string LogAddress)
        {
            if (LogAddress == "")
            {
                LogAddress = Environment.CurrentDirectory + "//" + "Error_" + DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + DateTime.Now.Hour + DateTime.Now.Minute + ".log";
            }
            StreamWriter sw = new StreamWriter(LogAddress, true);
            sw.WriteLine("当前时间：" + DateTime.Now.ToString());
            sw.WriteLine("异常信息：" + ex.Message);
            sw.WriteLine("异常对象：" + ex.Source);
            sw.WriteLine("调用堆栈：\n" + ex.StackTrace.Trim());
            sw.WriteLine("触发方法：" + ex.TargetSite);
            sw.WriteLine();
            sw.Close();
        }
    }
}