using SabreTools.Numerics;

namespace SabreTools.Data.Models.ISO9660
{
    /// <summary>
    /// Volume Partition Descriptor
    /// Volume Descriptor with VolumeDescriptorType = 0x03
    /// </summary>
    /// <see href="https://ecma-international.org/wp-content/uploads/ECMA-119_5th_edition_december_2024.pdf"/>
    public sealed class VolumePartitionDescriptor : VolumeDescriptor
    {
        /// <summary>
        /// 1 unused byte at offset 7, should be 0x00
        /// </summary>
        public byte UnusedByte { get; set; }

        /// <summary>
        /// 32-byte name of the intended system that can use this record
        /// a-characters only
        /// </summary>
        public byte[] SystemIdentifier { get; set; } = new byte[32];

        /// <summary>
        /// 32-byte name of this volume partition
        /// d-characters only
        /// </summary>
        public byte[] VolumePartitionIdentifier { get; set; } = new byte[32];

        /// <summary>
        /// Logical block number of the first logical block allocated to this volume partition
        /// </summary>
        public BothInt32 VolumePartitionLocation { get; set; } = 0;

        /// <summary>
        /// Number of logical blocks allocated to this volume partition
        /// </summary>
        public BothInt32 VolumePartitionSize { get; set; } = 0;

        /// <summary>
        /// 1960 bytes for System Use, contents not defined by ISO9660
        /// </summary>
        public byte[] SystemUse { get; set; } = new byte[1960];
    }
}