using System;
using System.IO;
using System.Reflection;
using Newtonsoft.Json.Linq;

namespace SWS.Commons
{
    /// <summary>
    /// nLog使用帮助类
    /// </summary>
    public class LoggerHelper
    {
        private static readonly log4net.ILog loginfo = log4net.LogManager.GetLogger("loginfo");
        private static readonly log4net.ILog logerror = log4net.LogManager.GetLogger("logerror");
        private static readonly log4net.ILog logdebug = log4net.LogManager.GetLogger("logdebug");
        private static readonly log4net.ILog logwarn = log4net.LogManager.GetLogger("logwarn");
        private static readonly log4net.ILog logfatal = log4net.LogManager.GetLogger("logfatal");

        private static LoggerHelper _obj = null;
        private static string logPath = string.Empty;
        private LoggerHelper()
        { 
            string codeBase = Assembly.GetExecutingAssembly().CodeBase;
            string dllPath = codeBase.Replace("file:///", "");
            dllPath = Path.GetDirectoryName(dllPath);
            logPath = Path.Combine(dllPath, "Logs\\");
            if (!Directory.Exists(logPath))
            { Directory.CreateDirectory(logPath); }
            var configFile = new FileInfo(Path.Combine(dllPath, "log4net.config"));
            log4net.Config.XmlConfigurator.ConfigureAndWatch(configFile);
        }
        /// <summary>
        /// 获取当前的日志记录<see cref="LoggerHelper"/>对象。
        /// </summary>
        public static LoggerHelper Current
        {
            get => _obj ?? (new LoggerHelper());
            set => _obj = value;
        }

        #region Debug，调试
        /// <summary>
        /// 调试信息输出。
        /// </summary>
        /// <param name="msg">需要记录的信息。</param>
        public void Debug(string msg)
        {
            logdebug.Debug(msg);
        }

        #endregion

        #region Info，信息
        /// <summary>
        /// 普通信息输出。
        /// </summary>
        /// <param name="msg">需要记录的信息。</param>
        public void Info(string msg)
        {
            loginfo.Info(msg);
        }

        #endregion

        #region Warn，警告
        /// <summary>
        /// 警告级别信息输出。
        /// </summary>
        /// <param name="msg">需要记录的信息。</param>
        public void Warn(string msg)
        {
            logwarn.Warn(msg);
        }

        #endregion

        #region Error，错误
        /// <summary>
        /// 错误级别信息输出。
        /// </summary>
        /// <param name="msg">需要记录的信息。</param>
        public void Error(string msg)
        {
            logerror.Error("----------------------------Error BEGIN------------------------------");
            logerror.Error(msg);
            logerror.Error("-----------------------------Error END-------------------------------");
        }
        #endregion

        #region Fatal,致命错误 
        /// <summary>
        /// 致命错误级别信息输出。
        /// </summary>
        /// <param name="msg">需要记录的信息。</param>
        /// <param name="err">需要记录的系统异常。</param>
        public void Fatal(string msg)
        {
            logfatal.Fatal("----------------------------Fatal BEGIN------------------------------");
            logerror.Fatal(msg);
            logerror.Fatal("-----------------------------Fatal END-------------------------------");
        }
        #endregion

        #region 输出json日志

        /// <summary>
        /// 输出json日志
        /// </summary>
        /// <param name="funName">json方法名</param>
        /// <param name="json">json数据</param>
        public void WriteJson(string funName, string json)
        {
            try
            {
                //json路径文件名 Environment.ExpandEnvironmentVariables(@"%USERPROFILE%\AppData\Roaming\SWS\Logs\" 
                string filename = Path.Combine(logPath, funName + ".json");
                //判断文件是否被打开占用
                if (!FileHelper.IsFileLocked(filename))
                {
                    File.Delete(filename);
                    string strJson = string.Empty;
                    if (json.StartsWith("["))
                    {
                        //格式化json数据 当前为组类型
                        JArray jobj = JArray.Parse(json);
                        strJson = jobj.ToString();
                    }
                    else if (json.StartsWith("{"))
                    {
                        //格式化json数据 当前为类类型
                        JObject jobj = JObject.Parse(json);
                        strJson = jobj.ToString();
                    }
                    //创建json文件，并输出数据
                    FileStream fs = new FileStream(filename, FileMode.Append);
                    StreamWriter wr = null;
                    wr = new StreamWriter(fs);
                    wr.WriteLine(strJson);
                    wr.Close();
                }
            }
            catch { }
        }
        #endregion
    }
}