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

using System.Diagnostics;
using System.Diagnostics.Tracing;

namespace LogStudy.EventLog
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("======== 事件日志学习 ========");

            MinimalEventSource minimalEventSource = MinimalEventSource.Log;
            minimalEventSource.Write("MiniEventSource", "--------------------------------");


            var evtSource = new EventSource("AndyEvent");
            evtSource.Write("AndyEvent", "sdfasdfsadfasdfasdfasdf");
           

            DatabaseSource.Instance.OnCommandExecute("我是自定义事件日志！");

            WriteWindowsOSLog();

            Console.WriteLine("输入回车键，退出程序。");
            Console.ReadLine();
        }

        /// <summary>
        /// 写入Windows 系统日志
        /// 需要引入 System.Diagnostics.EventLog 包
        /// (需要管理员权限运行)
        /// </summary>
        /// <remarks>
        /// 查看：Windows操作系统的 "事件查看器" --> 应用程序和服务日志 --> AndyLog：右侧日志记录列表
        /// </remarks>
        static void WriteWindowsOSLog()
        {
            //只有Windows系统，才可以。
            if (OperatingSystem.IsWindows())
            {
                var sourceName = "Andy-Windows-SystemLog-Source";
                var logName = "AndyLog";

                if (!System.Diagnostics.EventLog.SourceExists(sourceName))
                {
                    System.Diagnostics.EventLog.CreateEventSource(sourceName, logName);
                }

                // Create an EventLog instance and assign its source.
                System.Diagnostics.EventLog myLog = new System.Diagnostics.EventLog();
                myLog.Source = sourceName;

                // Write an informational entry to the event log.
                myLog.WriteEntry($"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}我是执行 .net 程序写入的 Windows 操作系统事件日志!");
            }
            else
            {
                Console.WriteLine("非Windows系统，不写入操作系统事件日志！");
            }
        }
    }

    [EventSource(Name = "Samples-EventSourceDemos-EventLog")]
    public sealed class MinimalEventSource : EventSource
    {
        private MinimalEventSource() { }

        public static MinimalEventSource Log = new MinimalEventSource();

        [Event(1, Message = "{0} -> {1}", Channel = EventChannel.Admin)]
        public void Load(long baseAddress, string imageName)
        {
            WriteEvent(1, baseAddress, imageName);
        }
    }
}