﻿// 
// Copyright (c) 2004-2020 Jaroslaw Kowalski <jaak@jkowalski.net>, Kim Christensen, Julian Verdurmen
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without 
// modification, are permitted provided that the following conditions 
// are met:
// 
// * Redistributions of source code must retain the above copyright notice, 
//   this list of conditions and the following disclaimer. 
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// * Neither the name of Jaroslaw Kowalski nor the names of its 
//   contributors may be used to endorse or promote products derived from this
//   software without specific prior written permission. 
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namespace NLog.Config
{
    using System;

    /// <summary>
    /// Default filtering with static level config
    /// </summary>
    internal class LoggingRuleLevelFilter : ILoggingRuleLevelFilter
    {
        public static readonly ILoggingRuleLevelFilter Off = new LoggingRuleLevelFilter();
        public bool[] LogLevels { get; }

        public LoggingRuleLevelFilter(bool[] logLevels = null)
        {
            LogLevels = new bool[LogLevel.MaxLevel.Ordinal + 1];
            if (logLevels != null)
            {
                for (int i = 0; i < Math.Min(logLevels.Length, LogLevels.Length); ++i)
                    LogLevels[i] = logLevels[i];
            }
        }

        public LoggingRuleLevelFilter GetSimpleFilterForUpdate()
        {
            if (!ReferenceEquals(LogLevels, Off.LogLevels))
                return this;
            return new LoggingRuleLevelFilter();
        }

        public LoggingRuleLevelFilter SetLoggingLevels(LogLevel minLevel, LogLevel maxLevel, bool enable)
        {
            for (int i = minLevel.Ordinal; i <= Math.Min(maxLevel.Ordinal, LogLevels.Length - 1); ++i)
                LogLevels[i] = enable;
            return this;
        }
    }
}
