using NLog;
using NLog.Config;
using NLog.Targets;

namespace Mirle.Component.Record
{
    /// <summary>
    /// 記錄檔類別
    /// </summary>
    public class LogWrapper
    {
        /// <summary>
        /// 建構式
        /// </summary>
        private LogWrapper() { }
        /// <summary>
        /// 關聯式資料庫物件
        /// </summary>
        private static volatile LogWrapper _logFile;
        /// <summary>
        /// 物件鎖定
        /// </summary>
        private static readonly object _syncRoot = new object();
        /// <summary>
        /// 記錄設定檔
        /// </summary>
        private static readonly LoggingConfiguration _loggingConfiguration = new LoggingConfiguration();
        /// <summary>
        /// 紀錄檔實例
        /// </summary>
        public static LogWrapper Instance
        {
            get
            {
                if (_logFile == null)
                {
                    lock (_syncRoot) // 鎖定避免多執行緒重覆呼叫建立物件
                    {
                        _logFile = new LogWrapper();
                    }
                }
                return _logFile;
            }
        }
        /// <summary>
        /// 取得記錄器
        /// </summary>
        /// <param name="logger">紀錄器名稱</param>
        /// <param name="fileTarget">紀錄器設定檔</param>
        /// <returns>紀錄器物件</returns>
        public Logger GetLogger(string logger, FileTarget fileTarget)
        {
            _loggingConfiguration.AddRuleForAllLevels(fileTarget, logger);
            LogManager.Configuration = _loggingConfiguration;
            return LogManager.GetLogger(logger);
        }
    }   
}