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

namespace WebService.SDK
{
    public class LogHelper
    {
        //设置存储日志文件的根目录
        public static string path = System.AppDomain.CurrentDomain.BaseDirectory;

        /// <summary>
        /// 记录内容至文本文件
        /// </summary>
        /// <param name="LogData">日志内容</param>
        /// <param name="LogPath">文件存储目录</param>
        /// <param name="LogName">文件名称，默认命名为当前日期</param>
        public static void WriteLog(string LogData, string LogPath, string LogName = "")
        {
            try
            {
                LogData = DateTime.Now.ToLongTimeString() + ":" + LogData;
                //如果文件名称为空，则默认命名为当前日期
                if (string.IsNullOrWhiteSpace(LogName))
                {
                    LogName = DateTime.Now.ToString("yyyyMMdd") + ".log";
                }
                if (!Directory.Exists(path + LogPath))
                {
                    Directory.CreateDirectory(path + LogPath);
                }
                //设置文件存储路径：
                string filename = path + LogPath + "\\" + LogName;
                //将文件内容写入流
                FileStream fs = new FileStream(filename, FileMode.OpenOrCreate);
                fs.Seek(0, SeekOrigin.End);
                byte[] _data = new UTF8Encoding().GetBytes(LogData + "\r\n");
                fs.Write(_data, 0, _data.Length);
                fs.Flush();
                fs.Close();
            }
            catch { }
        }

        /// <summary>
        /// 记录发送的内容至文本文件
        /// </summary>
        /// <param name="LogData">日志内容</param>
        public static void WriteSendLog(string LogData)
        {
            try
            {
                LogData = DateTime.Now.ToLongTimeString() + ":" + LogData;
                string LogName = "日志_Send" + System.DateTime.Now.Year.ToString() + "-" + System.DateTime.Now.Month.ToString() +
                    "-" + System.DateTime.Now.Day.ToString() + ".log";
                string filename = path + "\\" + LogName;
                FileStream fs = new FileStream(filename, FileMode.OpenOrCreate);
                fs.Seek(0, SeekOrigin.End);
                byte[] _data = new UTF8Encoding().GetBytes(LogData + "\r\n");
                fs.Write(_data, 0, _data.Length);
                fs.Flush();
                fs.Close();
                MoveFiles("日志_Send*", "Log", -5);
            }
            catch { }
        }

        /// <summary>
        /// 记录接收的内容至文本文件
        /// </summary>
        /// <param name="LogData"></param>
        public static void WriteReceiveLog(string LogData)
        {
            try
            {
                LogData = DateTime.Now.ToLongTimeString() + ":" + LogData;
                string LogName = "日志_Receive" + System.DateTime.Now.Year.ToString() + "-" + System.DateTime.Now.Month.ToString() +
                    "-" + System.DateTime.Now.Day.ToString() + ".log";
                string filename = path + "\\" + LogName;
                FileStream fs = new FileStream(filename, FileMode.OpenOrCreate);
                fs.Seek(0, SeekOrigin.End);
                byte[] _data = new UTF8Encoding().GetBytes(LogData + "\r\n");
                fs.Write(_data, 0, _data.Length);
                fs.Flush();
                fs.Close();
                MoveFiles("日志_Receive*", "Log", -5);
            }
            catch { }
        }

        public static void DeleteFiles(string FileName, string FilePath = "", int DeleteDays = -2)
        {
            FilePath = FilePath == "" ? path : FilePath;
            DirectoryInfo _DirectoryInfo = new DirectoryInfo(FilePath);
            foreach (FileInfo _FileInfo in _DirectoryInfo.GetFiles(FileName, SearchOption.TopDirectoryOnly))
            {
                if (_FileInfo.LastWriteTime < DateTime.Now.Date.AddDays(DeleteDays))
                {
                    _FileInfo.Delete();
                }
            }
        }

        public static void MoveFiles(string FileName, string FilePath = "Log", int DeleteDays = -30, string MovePath = "")
        {
            MovePath = MovePath == "" ? path : MovePath;
            if (!Directory.Exists(MovePath + "\\" + FilePath))
            {
                Directory.CreateDirectory(MovePath + "\\" + FilePath);
            }
            DirectoryInfo _DirectoryInfo = new DirectoryInfo(MovePath);
            foreach (FileInfo _FileInfo in _DirectoryInfo.GetFiles(FileName, SearchOption.TopDirectoryOnly))
            {
                if (_FileInfo.LastWriteTime < DateTime.Now.Date.AddDays(DeleteDays))
                {
                    if (File.Exists(MovePath + "\\" + FilePath + "\\" + _FileInfo.Name))
                    {
                        File.Delete(MovePath + "\\" + FilePath + "\\" + _FileInfo.Name);
                    }
                    _FileInfo.MoveTo(MovePath + "\\" + FilePath + "\\" + _FileInfo.Name);
                    //_FileInfo.Delete();
                }
            }
        }
    }
}