using System;
using System.IO;
using System.Text;

namespace AppWebservice
{
    /// <summary>
    /// 日志处理类
    /// </summary>
    public class LogHelper
    {
        private static string CodeVersion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString().Trim();

        //<summary>
        //保存日志的文件夹
        //<summary>
        private static string logPath = AppDomain.CurrentDomain.BaseDirectory + @"log\";

        /// <summary>
        /// 写日志
        /// </summary>
        /// <param name="msg"></param>
        /// <param name="errorFile"></param>
        public static void WriteLog(string msg, string errorFile = "")
        {
            try
            {
                if (string.IsNullOrEmpty(msg))
                {
                    return;
                }
                else
                {
                    msg = string.Format("程序版本号：{0},Time:{1},Message:{2}", CodeVersion, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ffff"), msg);
                }
                //如果不存在log文件夹 则创建
                if (!Directory.Exists(logPath))
                {
                    Directory.CreateDirectory(logPath);
                }

                StreamWriter sw = File.AppendText(logPath + errorFile + DateTime.Now.ToString("yyyyMMdd") + ".Log");
                sw.WriteLine(msg);
                sw.Close();
            }
            catch (Exception ex)
            {

            }
        }
        /// <summary>
        /// 拼接错误日志
        /// </summary>
        /// <param name="ex">异常类</param>
        /// <param name="errorFile">异常类文件夹名，可为空</param>
        public static void WriteLogManager(Exception ex, string errorFile = "")
        {
            StringBuilder str = new StringBuilder();//保存到文件中的日志信息
            str.AppendLine("****************************异常文本****************************");
            str.AppendLine("【程序版本号】：" + CodeVersion + "      【出现时间】：" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
            if (ex != null)
            {
                str.AppendLine(string.Format("【异常类型】：{0}\r\n【异常信息】：{1}\r\n【异常方法】：{2}\r\n【堆栈调用】：{3}", ex.GetType().Name, ex.Message, ex.TargetSite, ex.StackTrace));
            }
            else
            {
                str.AppendLine(string.Format("【未处理应用程序线程错误】：{0}", ex));
            }
            str.AppendLine("****************************************************************");
            //保存日志
            WriteLog(str.ToString(), "Error" + errorFile);
        }
    }
}