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

namespace Dongke.IBOSS.PRD.WCF.Hosting
{
    public static class LogFileOperation
    {
        #region 对外使用的公用方法
        /// <summary>
        /// 以Debug级别输出日志信息
        /// </summary>
        /// <param name="p_fileName">日志文件名称</param>
        /// <param name="p_logType">日志类型 true 记录日志，False 不记录日志</param>
        /// <param name="p_info">要输出的信息</param>
        public static void Debug(string p_fileName, bool p_logType, string p_info)
        {
            try
            {
                if (p_logType)
                {
                    if (!string.IsNullOrEmpty(p_fileName))
                    {
                        string strDateTime = GetNowDateTime();
                        string strFileFullName = GetCreateFile(p_fileName);
                        using (StreamWriter sw = new StreamWriter(strFileFullName, true, System.Text.Encoding.UTF8))
                        {
                            sw.WriteLine(strDateTime + "(Debug) - " + p_info);
                            sw.Close();
                        }
                    }
                }
            }
            catch { }
        }

        /// <summary>
        /// 以Info级别输出日志信息
        /// </summary>
        /// <param name="p_fileName">日志文件名称</param>
        /// <param name="p_logType">日志类型 true 记录日志，False 不记录日志</param>
        /// <param name="p_info">要输出的信息</param>
        public static void Info(string p_fileName, bool p_logType, string p_info)
        {
            try
            {
                if (p_logType)
                {
                    if (!string.IsNullOrEmpty(p_fileName))
                    {
                        string strDateTime = GetNowDateTime();
                        string strFileFullName = GetCreateFile(p_fileName);
                        using (StreamWriter sw = new StreamWriter(strFileFullName, true, System.Text.Encoding.UTF8))
                        {
                            sw.WriteLine(strDateTime + "(Info) - " + p_info);
                            sw.Close();
                        }
                    }
                }
            }
            catch { }
        }

        /// <summary>
        /// 以Warn级别输出日志信息
        /// </summary>
        /// <param name="p_fileName">日志文件名称</param>
        /// <param name="p_logType">日志类型 true 记录日志，False 不记录日志</param>
        /// <param name="p_info">要输出的信息</param>
        public static void Warn(string p_fileName, bool p_logType, string p_info)
        {
            try
            {
                if (p_logType)
                {
                    if (!string.IsNullOrEmpty(p_fileName))
                    {
                        string strDateTime = GetNowDateTime();
                        string strFileFullName = GetCreateFile(p_fileName);
                        using (StreamWriter sw = new StreamWriter(strFileFullName, true, System.Text.Encoding.UTF8))
                        {
                            sw.WriteLine(strDateTime + "(Warn) - " + p_info);
                            sw.Close();
                        }
                    }
                }
            }
            catch { }
        }

        /// <summary>
        /// 以Error级别输出日志信息
        /// </summary>
        /// <param name="p_fileName">日志文件名称</param>
        /// <param name="p_info">要输出的信息</param>
        public static void Error(string p_fileName, string p_info)
        {
            try
            {
                if (!string.IsNullOrEmpty(p_fileName))
                {
                    string strDateTime = GetNowDateTime();
                    string strFileFullName = GetCreateFile(p_fileName);
                    using (StreamWriter sw = new StreamWriter(strFileFullName, true, System.Text.Encoding.UTF8))
                    {
                        sw.WriteLine(strDateTime + "(Error) - " + p_info);
                        sw.Close();
                    }
                }
            }
            catch { }
        }

        /// <summary>
        /// 以Fatal级别输出日志信息
        /// </summary>
        /// <param name="p_fileName">日志文件名称</param>
        /// <param name="p_info">要输出的信息</param>
        public static void Fatal(string p_fileName, string p_info)
        {
            try
            {
                if (!string.IsNullOrEmpty(p_fileName))
                {
                    string strDateTime = GetNowDateTime();
                    string strFileFullName = GetCreateFile(p_fileName);
                    using (StreamWriter sw = new StreamWriter(strFileFullName, true, System.Text.Encoding.UTF8))
                    {
                        sw.WriteLine(strDateTime + "(Fatal) - " + p_info);
                        sw.Close();
                    }
                }
            }
            catch { }
        }

        /// <summary>
        /// 创建SQL语句，覆盖文件
        /// </summary>
        /// <param name="p_fileName">文件名</param>
        /// <param name="p_sql">要保存的SQL语句</param>
        public static void CreateSqlFile(string p_fileName, List<string> p_sql)
        {
            try
            {
                if (!string.IsNullOrEmpty(p_fileName))
                {
                    DeleteFile(p_fileName);
                    string strFileFullName = GetCreateFile(p_fileName);
                    using (StreamWriter sw = new StreamWriter(strFileFullName, false, System.Text.Encoding.UTF8))
                    {
                        foreach (string strSql in p_sql)
                        {
                            sw.WriteLine(strSql);
                        }
                        sw.Close();
                    }
                }
            }
            catch { }

        }

        /// <summary>
        /// 删除对应的文件
        /// </summary>
        /// <param name="p_fileName">文件名称</param>
        public static void DeleteLogFile(string p_fileName)
        {
            DeleteFile(p_fileName);
        }

        /// <summary>
        /// 根据文件名获取对应的文件内容，并返回文件内容
        /// </summary>
        /// <param name="p_fileName"></param>
        /// <returns></returns>
        public static byte[] ReadFile(string p_fileName)
        {
            string filePath = ConfigConst.StartupPath + "\\Log\\";
            try
            {
                string strFileName = p_fileName;
                if (!p_fileName.Contains("."))
                    strFileName = p_fileName + ".log";
                filePath = filePath + strFileName;
                if (File.Exists(filePath))
                {
                    FileStream fsMyfile = new FileStream(filePath, FileMode.Open, FileAccess.Read);
                    byte[] byteFile = new byte[fsMyfile.Length];
                    BinaryReader brMyfile = new BinaryReader(fsMyfile, Encoding.UTF8);
                    brMyfile.Read(byteFile, 0, byteFile.Length);
                    brMyfile.Close();
                    fsMyfile.Close();
                    fsMyfile.Dispose();
                    return byteFile;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            return System.Text.Encoding.UTF8.GetBytes(filePath + " 日志文件不存在！");
        }

        /// <summary>
        /// 获取文件长度
        /// </summary>
        /// <param name="p_fileName"></param>
        /// <returns></returns>
        public static long GetFileSize(string p_fileName)
        {

            string filePath = ConfigConst.StartupPath + "\\Log\\";
            try
            {
                string strFileName = p_fileName;
                if (!p_fileName.Contains("."))
                    strFileName = p_fileName + ".log";
                filePath = filePath + strFileName;
                if (File.Exists(filePath))
                {
                    FileStream fsMyfile = new FileStream(filePath, FileMode.Open, FileAccess.Read);
                    long fileSize = fsMyfile.Length;
                    fsMyfile.Close();
                    fsMyfile.Dispose();
                    return fileSize;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            return 0;
        }
        #endregion

        #region 自定义方法
        /// <summary>
        /// 设置当前时间
        /// </summary>
        /// <returns>返回系统时间</returns>
        private static string GetNowDateTime()
        {
            DateTime dt = DateTime.Now;
            return dt.ToString("yyyy-MM-dd HH:mm:ss,fff");
        }

        /// <summary>
        /// 返回对应的文件全名
        /// </summary>
        /// <param name="p_fileName"></param>
        /// <returns>返回对应的文件全名</returns>
        private static string GetCreateFile(string p_fileName)
        {
            string filePath = ConfigConst.StartupPath + "\\Log\\";
            DirectoryInfo dirFile = new DirectoryInfo(filePath);
            if (!dirFile.Exists)
            {
                dirFile.Create();
            }

            string strFileName = p_fileName;
            if (!p_fileName.Contains("."))
            {
                strFileName = p_fileName + ".log";
            }

            //if (strFileName.Contains(ConfigConst.LogFileNameOld))
            //{
            //    string strTempFileAllName = filePath + strFileName;
            //    if (System.IO.File.Exists(strTempFileAllName))
            //    {
            //        System.IO.FileInfo fileSize = new System.IO.FileInfo(strTempFileAllName);
            //        if (fileSize.Length > (20 * 1024 * 1024))  //大于20M
            //        {
            //            strFileName = ConfigConst.LogFileNameOld + DateTime.Now.ToString("yyyyMMddHHmmss");
            //            ConfigConst.LogFileName = strFileName;
            //            strFileName = strFileName + ".log";
            //        }
            //    }
            //}

            return filePath + strFileName;
        }

        /// <summary>
        /// 删除日志文件信息
        /// </summary>
        /// <param name="p_fileName"></param>
        private static void DeleteFile(string p_fileName)
        {
            try
            {
                string filePath = ConfigConst.StartupPath + "\\Log\\";
                string strFileName = p_fileName;
                if (!p_fileName.Contains("."))
                    strFileName = p_fileName + ".log";
                filePath = filePath + strFileName;
                if (File.Exists(filePath))
                    System.IO.File.Delete(filePath);
            }
            catch { }
        }
        #endregion
    }
}