using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace NetLibrary.Log
{
    public class ErrorFollow
    {
        public static bool IsDebug = true;
        #region 输出错误信息
        /// <summary>
        /// 输出错误信息
        /// </summary>
        public static void TraceWrite(string TypeName, string StackTrace, string ErrorMsg)
        {
            if (ErrorFollow.IsDebug == false) return;
            if (string.IsNullOrEmpty(ErrorMsg) == true) ErrorMsg="消息为空字符串";
            try
            {
                string DirectoryName = AppDomain.CurrentDomain.BaseDirectory + "ServerCookies";
                if (Directory.Exists(DirectoryName) == false) Directory.CreateDirectory(DirectoryName);
                string filePath = DirectoryName + "/" + DateTime.Today.ToString("yyyy-MM-dd") + "EventLog.log";
                bool append = true;
                if (File.Exists(filePath) == false) File.Create(filePath).Close();
                FileInfo f = new FileInfo(filePath);
                if (f.Length / 1024 / 1024 > 1)
                {
                    append = false;
                    string newFile=DirectoryName+"/"+DateTime.Now.ToString("yyyyMMdd_HHmmss") + ".log";
                    f.CopyTo(newFile, true);
                }
                f = null;
                using (StreamWriter sw = new StreamWriter(filePath, append, System.Text.Encoding.Default))
                {
                    sw.WriteLine("------------");
                    sw.WriteLine(TypeName);
                    sw.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
                    sw.WriteLine(StackTrace);
                    sw.WriteLine(ErrorMsg);
                    sw.Close();
                }
            }
            catch {  }
        }
        #endregion

        #region 输出错误信息
        /// <summary>
        /// 输出错误信息
        /// </summary>
        public static void TraceWrite(string filePath, string TypeName, string StackTrace, string ErrorMsg)
        {
            if (ErrorFollow.IsDebug == false) return;
            if (string.IsNullOrEmpty(ErrorMsg) == true) ErrorMsg = "未知错误";
            try
            {
                bool append = true;
                if (File.Exists(filePath) == false) File.Create(filePath).Close();
                FileInfo f = new FileInfo(filePath);
                if (f.Length / 1024 / 32 > 10) append = false;
                f = null;
                using (StreamWriter sw = new StreamWriter(filePath, append, System.Text.Encoding.Default))
                {
                    sw.WriteLine("------------");
                    sw.WriteLine(TypeName);
                    sw.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
                    sw.WriteLine(StackTrace);
                    sw.WriteLine(ErrorMsg);
                    sw.Close();
                }
            }
            catch { }
        }
        #endregion

        #region 清理错误日志
        public static void DeleteLog(int Day)
        {
            string DirectoryName = AppDomain.CurrentDomain.BaseDirectory + "ServerCookies/";
            if (Directory.Exists(DirectoryName) == false) return;
            string[] files = Directory.GetFiles(DirectoryName, "*.log");
            foreach (string filePath in files)
            {
                DateTime dt = File.GetCreationTime(filePath);
                if (dt.AddDays(Day) > DateTime.Now) continue;
                File.Delete(filePath);
            }
        }
        #endregion
      

    }
}