using System;
using static System.Buffers.Binary.BinaryPrimitives;

namespace PKHeX.Core
{
    /// <summary>
    /// <see cref="PersonalInfo"/> class with values from the Sun &amp; Moon games.
    /// </summary>
    public class PersonalInfoSM : PersonalInfoXY
    {
        public new const int SIZE = 0x54;

        public PersonalInfoSM(byte[] data) : base(data)
        {
            TMHM = GetBits(Data.AsSpan(0x28, 0x10)); // 36-39
            TypeTutors = GetBits(Data.AsSpan(0x38, 0x4)); // 40

            SpecialTutors = new[]
            {
                GetBits(Data.AsSpan(0x3C, 0x0A)),
            };
        }

        public override byte[] Write()
        {
            SetBits(TMHM, Data.AsSpan(0x28));
            SetBits(TypeTutors, Data.AsSpan(0x38));
            SetBits(SpecialTutors[0], Data.AsSpan(0x3C));
            return Data;
        }

        public int SpecialZ_Item { get => ReadUInt16LittleEndian(Data.AsSpan(0x4C)); set => WriteUInt16LittleEndian(Data.AsSpan(0x4C), (ushort)value); }
        public int SpecialZ_BaseMove { get => ReadUInt16LittleEndian(Data.AsSpan(0x4E)); set => WriteUInt16LittleEndian(Data.AsSpan(0x4E), (ushort)value); }
        public int SpecialZ_ZMove { get => ReadUInt16LittleEndian(Data.AsSpan(0x50)); set => WriteUInt16LittleEndian(Data.AsSpan(0x50), (ushort)value); }
        public bool LocalVariant { get => Data[0x52] == 1; set => Data[0x52] = value ? (byte)1 : (byte)0; }
    }
}