// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename       : ISO9660.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : ISO9660 filesystem plugin.
//
// --[ Description ] ----------------------------------------------------------
//
//     Constructors and common variables for the ISO9660 filesystem plugin.
//
// --[ License ] --------------------------------------------------------------
//
//     This library is free software; you can redistribute it and/or modify
//     it under the terms of the GNU Lesser General Public License as
//     published by the Free Software Foundation; either version 2.1 of the
//     License, or (at your option) any later version.
//
//     This library 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
//     Lesser General Public License for more details.
//
//     You should have received a copy of the GNU Lesser General Public
//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2023 Natalia Portillo
// In the loving memory of Facunda "Tata" Suárez Domínguez, R.I.P. 2019/07/24
// ****************************************************************************/

using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Text;
using Aaru.CommonTypes.Interfaces;
using Aaru.CommonTypes.Structs;
using Schemas;

namespace Aaru.Filesystems
{
    // This is coded following ECMA-119.
    /// <inheritdoc />
    /// <summary>Implements the High Sierra, ISO9660 and CD-i filesystems</summary>
    [SuppressMessage("ReSharper", "UnusedType.Local")]
    public sealed partial class ISO9660 : IReadOnlyFilesystem
    {
        bool                                      _cdi;
        bool                                      _debug;
        bool                                      _highSierra;
        IMediaImage                               _image;
        bool                                      _joliet;
        bool                                      _mounted;
        Namespace                                 _namespace;
        PathTableEntryInternal[]                  _pathTable;
        Dictionary<string, DecodedDirectoryEntry> _rootDirectoryCache;
        FileSystemInfo                            _statfs;
        bool                                      _useEvd;
        bool                                      _usePathTable;
        bool                                      _useTransTbl;
        ushort                                    _blockSize;

        /// <inheritdoc />
        public FileSystemType XmlFsType { get; private set; }
        /// <inheritdoc />
        public Encoding Encoding { get; private set; }
        /// <inheritdoc />
        public string Name => "ISO9660 Filesystem";
        /// <inheritdoc />
        public Guid Id => new Guid("d812f4d3-c357-400d-90fd-3b22ef786aa8");
        /// <inheritdoc />
        public string Author => "Natalia Portillo";

        /// <inheritdoc />
        public IEnumerable<(string name, Type type, string description)> SupportedOptions =>
            new (string name, Type type, string description)[]
            {
                ("use_path_table", typeof(bool), "Use path table for directory traversal"),
                ("use_trans_tbl", typeof(bool), "Use TRANS.TBL for filenames"),
                ("use_evd", typeof(bool),
                 "If present, use Enhanced Volume Descriptor with specified encoding (overrides namespace)")
            };

        /// <inheritdoc />
        public Dictionary<string, string> Namespaces => new Dictionary<string, string>
        {
            {
                "normal", "Primary Volume Descriptor, ignoring ;1 suffixes"
            },
            {
                "vms", "Primary Volume Descriptor, showing version suffixes"
            },
            {
                "joliet", "Joliet Volume Descriptor (default)"
            },
            {
                "rrip", "Rock Ridge"
            },
            {
                "romeo", "Primary Volume Descriptor using the specified encoding codepage"
            }
        };

        static Dictionary<string, string> GetDefaultOptions() => new Dictionary<string, string>
        {
            {
                "debug", false.ToString()
            }
        };
    }
}