bepin/BepInEx/Logging/LogLevel.cs

using System;

namespace BepInEx.Logging
{
	/// <summary>
	/// The level, or severity of a log entry.
	/// </summary>
    [Flags]
    public enum LogLevel
    {
		/// <summary>
		/// No level selected.
		/// </summary>
        None = 0,

		/// <summary>
		/// A fatal error has occurred, which cannot be recovered from.
		/// </summary>
        Fatal = 1,

		/// <summary>
		/// An error has occured, but can be recovered from.
		/// </summary>
        Error = 2,

		/// <summary>
		/// A warning has been produced, but does not necessarily mean that something wrong has happened.
		/// </summary>
        Warning = 4,

		/// <summary>
		/// An important message that should be displayed to the user.
		/// </summary>
        Message = 8,

		/// <summary>
		/// A message of low importance.
		/// </summary>
        Info = 16,

		/// <summary>
		/// A message that would likely only interest a developer.
		/// </summary>
        Debug = 32,

		/// <summary>
		/// All log levels.
		/// </summary>
        All = Fatal | Error | Warning | Message | Info | Debug
    }

    public static class LogLevelExtensions
    {
		/// <summary>
		/// Gets the highest log level when there could potentially be multiple levels provided.
		/// </summary>
		/// <param name="levels">The log level(s).</param>
		/// <returns>The highest log level supplied.</returns>
        public static LogLevel GetHighestLevel(this LogLevel levels)
        {
            var enums = Enum.GetValues(typeof(LogLevel));
            Array.Sort(enums);

            foreach (LogLevel e in enums)
            {
                if ((levels & e) != LogLevel.None)
                    return e;
            }

            return LogLevel.None;
        }

		/// <summary>
		/// Returns a translation of a log level to it's associated console colour.
		/// </summary>
		/// <param name="level">The log level(s).</param>
		/// <returns>A console color associated with the highest log level supplied.</returns>
        public static ConsoleColor GetConsoleColor(this LogLevel level)
        {
            level = GetHighestLevel(level);

            switch (level)
            {
                case LogLevel.Fatal:
                    return ConsoleColor.Red;
                case LogLevel.Error:
                    return ConsoleColor.DarkRed;
                case LogLevel.Warning:
                    return ConsoleColor.Yellow;
                case LogLevel.Message:
                    return ConsoleColor.White;
                case LogLevel.Info:
                default:
                    return ConsoleColor.Gray;
                case LogLevel.Debug:
                    return ConsoleColor.DarkGray;
            }
        }
    }
}