using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using LogLevel = Elight.Utility.Enum.LogLevel;

namespace Elight.Utility.logs
{
    /// <summary>
    /// 写入文本日志 
    /// </summary>
    public static class LogService
    {

        /// <summary>
        /// 写日志的等级 默认int最小值
        /// </summary>
        private static readonly int _logWriteLevel =3;

        /// <summary>
        /// The obj.
        /// </summary>
        private static readonly object obj = new object();

        /// <summary>
        /// 写日志等级设置，默认只写全部日志
        /// </summary>
        private static LogLevel LogWriteLevel
        {
            get
            {
                if (_logWriteLevel < 0 || _logWriteLevel > 7)
                {
                    return LogLevel.H调试信息;
                }
                else
                {
                    return (LogLevel)_logWriteLevel;
                }
            }
        }

        /// <summary>
        /// 记录异常文本日志
        /// </summary>
        /// <param name="ex">异常</param>
        /// <param name="remark">备注</param>
        public static void WriteLog(Exception ex, string remark)
        {
            WriteLog(ex, null, remark);
        }

        /// <summary>
        /// Writes the log.
        /// </summary>
        /// <param name="ex">The ex.</param>
        /// <param name="remark">The remark.</param>
        /// <param name="logLevel">The log level.</param>
        public static void WriteLog(Exception ex, string remark, LogLevel logLevel = LogLevel.D错误事件)
        {
            if (logLevel > LogWriteLevel)
            {
                return;
            }
            else
            {
                WriteLog(ex, null, remark);
            }
        }

        /// <summary>
        /// 记录异常文本日志
        /// </summary>
        /// <param name="ex">异常</param>
        /// <param name="path">日志路径</param>
        /// <param name="remark">备注</param>
        public static void WriteLog(Exception ex, string path, string remark)
        {
            var errormessage = CreateErrorMessage(ex, remark);
            WriteLog(errormessage.ToString(), path ?? Path.Combine(GetLogPath(), "Logs/ExceptionLog"));
        }

        /// <summary>
        /// 记录异常文本日志
        /// </summary>
        /// <param name="describe">错误描述</param>
        /// <param name="ex">异常</param>
        /// <param name="path">日志路径</param>
        /// <param name="remark">备注</param>
        public static void WriteLog(string describe, Exception ex, string path, string remark)
        {
            var errormessage = CreateErrorMessage(ex, remark);
            WriteLog("Describe:" + describe + " Error:" + errormessage, path ?? Path.Combine(GetLogPath(), "Logs/ExceptionLog"));
        }

        /// <summary>
        /// 创建异常消息
        /// </summary>
        /// <param name="ex">异常信息</param>
        /// <param name="remark">备注</param>
        /// <returns>结果</returns>
        private static StringBuilder CreateErrorMessage(Exception ex, string remark)
        {
            StringBuilder stringBuilder = new StringBuilder();
            stringBuilder.Append("************************Exception Start********************************");
            string newLine = Environment.NewLine;
            stringBuilder.Append(newLine);
            stringBuilder.AppendLine("Exception Remark：" + remark);
            Exception innerException = ex.InnerException;
            stringBuilder.AppendFormat("Exception Date:{0}{1}", DateTime.Now, Environment.NewLine);
            if (innerException != null)
            {
                stringBuilder.AppendFormat("Inner Exception Type:{0}{1}", innerException.GetType(), newLine);
                stringBuilder.AppendFormat("Inner Exception Message:{0}{1}", innerException.Message, newLine);
                stringBuilder.AppendFormat("Inner Exception Source:{0}{1}", innerException.Source, newLine);
                stringBuilder.AppendFormat("Inner Exception StackTrace:{0}{1}", innerException.StackTrace, newLine);
            }
            stringBuilder.AppendFormat("Exception Type:{0}{1}", ex.GetType(), newLine);
            stringBuilder.AppendFormat("Exception Message:{0}{1}", ex.Message, newLine);
            stringBuilder.AppendFormat("Exception Source:{0}{1}", ex.Source, newLine);
            stringBuilder.AppendFormat("Exception StackTrace:{0}{1}", ex.StackTrace, newLine);
            stringBuilder.Append("************************Exception End************************************");
            stringBuilder.Append(newLine);
            return stringBuilder;
        }

        /// <summary>
        /// 记录文本日志
        /// </summary>
        /// <param name="content">日志内容</param>
        /// <param name="logLevel">The log level.</param>
        public static void WriteLog(string content, LogLevel logLevel = LogLevel.G有用信息)
        {
            if (logLevel > LogWriteLevel)
            {
                return;
            }
            else
            {
                WriteLog(logLevel.ToString() + "\t" + content, Path.Combine(GetLogPath(), "Logs"));
            }
        }

        /// <summary>
        /// 记录文本日志
        /// </summary>
        /// <param name="content">日志内容</param>
        /// <param name="path">日志路径</param>
        public static void WriteLog(string content, string path)
        {
            //Action action = () => Log(content, path);
            //action.BeginInvoke(null, null);
            //BeginInvoke只能在framework里使用 

            Task task = Task.Run(() => Log(content, path));
            task.Wait();
        }

        /// <summary>
        /// 记录文本日志 大于等于配置的等级 才写日志
        /// </summary>
        /// <param name="content">日志内容</param>
        /// <param name="path">日志路径</param>
        /// <param name="logLevel">写日志的等级</param>
        public static void WriteLog(string content, string path, LogLevel logLevel = LogLevel.G有用信息)
        {
            if (logLevel > LogWriteLevel)
            {
                return;
            }
            WriteLog(logLevel + "\t" + content, path);
        }

        /// <summary>
        /// 记录日志
        /// </summary>
        /// <param name="method">调用方法(必填)</param>
        /// <param name="request">请求参数</param>
        /// <param name="response">输出参数</param>
        /// <param name="saveFolder">保存文件夹，默认为CallLog</param>
        public static void SaveLog(string method, object request, object response, string saveFolder = "CallLog")
        {
            //try
            //{
            StringBuilder stringBuilder = new StringBuilder();
            stringBuilder.Append("************************Start********************************");
            stringBuilder.Append(Environment.NewLine);
            stringBuilder.AppendFormat("Method：{0}{1}", method, Environment.NewLine);
            stringBuilder.AppendFormat("Request:{0}{1}", request == null ? string.Empty : JsonConvert.SerializeObject(request), Environment.NewLine);
            stringBuilder.AppendFormat("Response:{0}{1}", response == null ? "void" : JsonConvert.SerializeObject(response), Environment.NewLine);
            stringBuilder.Append("************************End************************************");
            stringBuilder.Append(Environment.NewLine);
            var logContent = stringBuilder.ToString();
            var path = Path.Combine(GetLogPath(), "Logs/" + saveFolder);
            WriteLog(logContent, path);
            //}
            //catch (Exception ex)
            //{
            //    WriteLog(ex, "记录调用日志异常");
            //}
        }

        /// <summary>
        /// The log.
        /// </summary>
        /// <param name="content">
        /// The content.
        /// </param>
        /// <param name="path">
        /// The path.
        /// </param>
        /// <returns>
        /// The 
        /// </returns>
        internal static bool Log(string content, string path)
        {
            lock (obj)
            {
                try
                {
                    TextWriter textWriter = new TextWriter(path);
                    return
                        textWriter.WriteLog(
                            DateTime.Now.ToString("日志时间:yyyy-MM-dd HH:mm:ss") + Environment.NewLine + content
                            + Environment.NewLine);
                }
                catch (Exception)
                {
                    return false;
                }
            }
        }

        /// <summary>
        /// 获取日志路径
        /// </summary>
        /// <returns>路径</returns>
        internal static string GetLogPath()
        {
            var _path = "/CaseFile/logs";
            var dic = Path.Combine(Environment.CurrentDirectory, "wwwroot");
            if (!string.IsNullOrEmpty(_path))
                dic += _path;
            if (string.IsNullOrWhiteSpace(dic))
            {
                return AppDomain.CurrentDomain.BaseDirectory;
            }
            else
            {
                return dic;
            }
        }
    }
}