// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename       : Info.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : HP Logical Interchange Format 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 © 2011-2025 Natalia Portillo
// ****************************************************************************/

using System.Text;
using Aaru.CommonTypes.AaruMetadata;
using Aaru.CommonTypes.Enums;
using Aaru.CommonTypes.Interfaces;
using Aaru.Helpers;
using Aaru.Logging;
using Partition = Aaru.CommonTypes.Partition;

namespace Aaru.Filesystems;

// Information from http://www.hp9845.net/9845/projects/hpdir/#lif_filesystem
/// <inheritdoc />
/// <summary>Implements detection of the LIF filesystem</summary>
public sealed partial class LIF
{
#region IFilesystem Members

    /// <inheritdoc />
    public bool Identify(IMediaImage imagePlugin, Partition partition)
    {
        if(imagePlugin.Info.SectorSize < 256) return false;

        ErrorNumber errno = imagePlugin.ReadSector(partition.Start, out byte[] sector);

        if(errno != ErrorNumber.NoError) return false;

        SystemBlock lifSb = Marshal.ByteArrayToStructureBigEndian<SystemBlock>(sector);
        AaruLogging.Debug(MODULE_NAME, Localization.magic_0_expected_1, lifSb.magic, LIF_MAGIC);

        return lifSb.magic == LIF_MAGIC;
    }

    /// <inheritdoc />
    public void GetInformation(IMediaImage imagePlugin, Partition partition, Encoding encoding, out string information,
                               out FileSystem metadata)
    {
        encoding    ??= Encoding.GetEncoding("iso-8859-15");
        information =   "";
        metadata    =   new FileSystem();

        if(imagePlugin.Info.SectorSize < 256) return;

        ErrorNumber errno = imagePlugin.ReadSector(partition.Start, out byte[] sector);

        if(errno != ErrorNumber.NoError) return;

        SystemBlock lifSb = Marshal.ByteArrayToStructureBigEndian<SystemBlock>(sector);

        if(lifSb.magic != LIF_MAGIC) return;

        var sb = new StringBuilder();

        sb.AppendLine(Localization.HP_Logical_Interchange_Format);
        sb.AppendFormat(Localization.Directory_starts_at_cluster_0, lifSb.directoryStart).AppendLine();
        sb.AppendFormat(Localization.LIF_identifier_0,              lifSb.lifId).AppendLine();
        sb.AppendFormat(Localization.Directory_size_0_clusters,     lifSb.directorySize).AppendLine();
        sb.AppendFormat(Localization.LIF_version_0,                 lifSb.lifVersion).AppendLine();

        // How is this related to volume size? I have only CDs to test and makes no sense there
        sb.AppendFormat(Localization._0_tracks, lifSb.tracks).AppendLine();
        sb.AppendFormat(Localization._0_heads, lifSb.heads).AppendLine();
        sb.AppendFormat(Localization._0_sectors, lifSb.sectors).AppendLine();
        sb.AppendFormat(Localization.Volume_name_0, StringHandlers.CToString(lifSb.volumeLabel, encoding)).AppendLine();
        sb.AppendFormat(Localization.Volume_created_on_0, DateHandlers.LifToDateTime(lifSb.creationDate)).AppendLine();

        information = sb.ToString();

        metadata = new FileSystem
        {
            Type         = FS_TYPE,
            ClusterSize  = 256,
            Clusters     = partition.Size / 256,
            CreationDate = DateHandlers.LifToDateTime(lifSb.creationDate),
            VolumeName   = StringHandlers.CToString(lifSb.volumeLabel, encoding)
        };
    }

#endregion
}