using NLog;
using NLog.Targets;
using System;
using System.IO;
using System.Reflection;

namespace MyTool
{
    class Program
    {
        //透過程式設定 NLog 時，要留意 statci logger 取得物件時機
        //要排在 SetupNLog() 之後
        static ILogger logger = null;
        
        static void SetupNLog()
        {
            var config = new NLog.Config.LoggingConfiguration();
            //偵測程式是不是被放在桌面
            var onDesktop =
                Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) ==
                Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
            var logFile = new NLog.Targets.FileTarget("f") { 
                FileName = 
                    (onDesktop ? Path.GetTempPath() : "${basedir}") +
                    "/MyToolLogs/${shortdate}.log" 
            };
            config.AddRule(LogLevel.Trace, LogLevel.Fatal, logFile);
            LogManager.Configuration = config;
            logger = NLog.LogManager.GetLogger("debug");
        }

        static void Main(string[] args)
        {
            //趕在引用 NLog 程式庫前完成設定
            SetupNLog();

            //檢查 Log 路徑並列印出來
            //REF: https://blog.darkthread.net/blog/get-nlog-path/
            Console.WriteLine(
                (LogManager.Configuration.FindTargetByName("f") as FileTarget).FileName
                .Render(new LogEventInfo() { 
                    TimeStamp = DateTime.Now, LoggerName = "loggerName" 
                }));

            logger.Debug("Hi there.");
            Console.ReadLine();
        }
    }
}