Aaru/Aaru.Gui/ConsoleHandler.cs

// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename       : ConsoleHandler.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : Aaru GUI.
//
// --[ Description ] ----------------------------------------------------------
//
//     Receives AaruConsole events and stores them for showing in the console
//     window.
//
// --[ License ] --------------------------------------------------------------
//
//     This program is free software: you can redistribute it and/or modify
//     it under the terms of the GNU General public License as
//     published by the Free Software Foundation, either version 3 of the
//     License, or (at your option) any later version.
//
//     This program is distributed in the hope that it will be useful,
//     but WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//     GNU General public License for more details.
//
//     You should have received a copy of the GNU General public License
//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2021 Natalia Portillo
// ****************************************************************************/

using System;
using System.Collections.ObjectModel;
using Aaru.Console;
using JetBrains.Annotations;

namespace Aaru.Gui
{
    internal static class ConsoleHandler
    {
        static bool _debug;
        static bool _verbose;

        public static bool Debug
        {
            get => _debug;
            set
            {
                if(_debug == value)
                    return;

                _debug = value;

                if(_debug)
                    AaruConsole.DebugWithModuleWriteLineEvent += OnDebugWriteHandler;
                else
                    AaruConsole.DebugWithModuleWriteLineEvent -= OnDebugWriteHandler;
            }
        }

        public static bool Verbose
        {
            get => _verbose;
            set
            {
                if(_verbose == value)
                    return;

                _verbose = value;

                if(_verbose)
                    AaruConsole.VerboseWriteLineEvent += OnVerboseWriteHandler;
                else
                    AaruConsole.VerboseWriteLineEvent -= OnVerboseWriteHandler;
            }
        }

        public static ObservableCollection<LogEntry> Entries { get; } = new ObservableCollection<LogEntry>();

        internal static void Init()
        {
            AaruConsole.WriteLineEvent      += OnWriteHandler;
            AaruConsole.ErrorWriteLineEvent += OnErrorWriteHandler;
        }

        static void OnWriteHandler([CanBeNull] string format, [CanBeNull] params object[] arg)
        {
            if(format == null ||
               arg    == null)
                return;

            Entries.Add(new LogEntry
            {
                Message   = string.Format(format, arg),
                Module    = null,
                Timestamp = DateTime.Now,
                Type      = "Info"
            });
        }

        static void OnErrorWriteHandler([CanBeNull] string format, [CanBeNull] params object[] arg)
        {
            if(format == null ||
               arg    == null)
                return;

            Entries.Add(new LogEntry
            {
                Message   = string.Format(format, arg),
                Module    = null,
                Timestamp = DateTime.Now,
                Type      = "Error"
            });
        }

        static void OnVerboseWriteHandler([CanBeNull] string format, [CanBeNull] params object[] arg)
        {
            if(format == null ||
               arg    == null)
                return;

            Entries.Add(new LogEntry
            {
                Message   = string.Format(format, arg),
                Module    = null,
                Timestamp = DateTime.Now,
                Type      = "Verbose"
            });
        }

        static void OnDebugWriteHandler(string module, [CanBeNull] string format, [CanBeNull] params object[] arg)
        {
            if(format == null ||
               arg    == null)
                return;

            Entries.Add(new LogEntry
            {
                Message   = string.Format(format, arg),
                Module    = module,
                Timestamp = DateTime.Now,
                Type      = "Debug"
            });
        }
    }

    public sealed class LogEntry
    {
        public string   Message   { get; set; }
        public string   Module    { get; set; }
        public DateTime Timestamp { get; set; }
        public string   Type      { get; set; }
    }
}