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

namespace PKHeX.Core;

/// <summary> Generation 8 <see cref="PKM"/> format. </summary>
public abstract class G8PKM : PKM, ISanityChecksum,
    ITechRecord, ISociability, IContestStats, IHyperTrain, IScaledSize, IGigantamax, IFavorite, IDynamaxLevel, IHandlerLanguage, IFormArgument, IHomeTrack, IBattleVersion, ITrainerMemories, IPokerusStatus,
    IRibbonIndex, IRibbonSetAffixed, IRibbonSetRibbons, IRibbonSetEvent3, IRibbonSetEvent4, IRibbonSetCommon3, IRibbonSetCommon4, IRibbonSetCommon6, IRibbonSetMemory6, IRibbonSetCommon7, IRibbonSetCommon8,  IRibbonSetCommon9, IRibbonSetMarks, IRibbonSetMark8, IRibbonSetMark9
{
    protected G8PKM() : base(PokeCrypto.SIZE_8PARTY) { }
    protected G8PKM(byte[] data) : base(DecryptParty(data)) { }

    private static byte[] DecryptParty(byte[] data)
    {
        PokeCrypto.DecryptIfEncrypted8(ref data);
        Array.Resize(ref data, PokeCrypto.SIZE_8PARTY);
        return data;
    }

    private ushort CalculateChecksum() => Checksums.Add16(Data.AsSpan()[8..PokeCrypto.SIZE_8STORED]);

    // Simple Generated Attributes
    public abstract IPermitRecord Permit { get; } // PersonalInfo derived metadata

    public override int CurrentFriendship
    {
        get => CurrentHandler == 0 ? OT_Friendship : HT_Friendship;
        set { if (CurrentHandler == 0) OT_Friendship = value; else HT_Friendship = value; }
    }

    public override int SIZE_PARTY => PokeCrypto.SIZE_8PARTY;
    public override int SIZE_STORED => PokeCrypto.SIZE_8STORED;

    public sealed override bool ChecksumValid => CalculateChecksum() == Checksum;
    public sealed override void RefreshChecksum() => Checksum = CalculateChecksum();
    public sealed override bool Valid { get => Sanity == 0 && ChecksumValid; set { if (!value) return; Sanity = 0; RefreshChecksum(); } }

    // Trash Bytes
    public override Span<byte> Nickname_Trash => Data.AsSpan(0x58, 26);
    public override Span<byte> HT_Trash => Data.AsSpan(0xA8, 26);
    public override Span<byte> OT_Trash => Data.AsSpan(0xF8, 26);

    // Maximums
    public override int MaxIV => 31;
    public override int MaxEV => 252;
    public override int MaxStringLengthOT => 12;
    public override int MaxStringLengthNickname => 12;

    public override uint PSV => ((PID >> 16) ^ (PID & 0xFFFF)) >> 4;
    public override uint TSV => (uint)(TID16 ^ SID16) >> 4;
    public override bool IsUntraded => Data[0xA8] == 0 && Data[0xA8 + 1] == 0 && Format == Generation; // immediately terminated HT_Name data (\0)

    // Complex Generated Attributes
    public override int Characteristic => EntityCharacteristic.GetCharacteristic(EncryptionConstant, IV32);

    // Methods
    protected override byte[] Encrypt()
    {
        RefreshChecksum();
        return PokeCrypto.EncryptArray8(Data);
    }

    public void FixRelearn()
    {
        while (true)
        {
            if (RelearnMove4 != 0 && RelearnMove3 == 0)
            {
                RelearnMove3 = RelearnMove4;
                RelearnMove4 = 0;
            }
            if (RelearnMove3 != 0 && RelearnMove2 == 0)
            {
                RelearnMove2 = RelearnMove3;
                RelearnMove3 = 0;
                continue;
            }
            if (RelearnMove2 != 0 && RelearnMove1 == 0)
            {
                RelearnMove1 = RelearnMove2;
                RelearnMove2 = 0;
                continue;
            }
            break;
        }
    }

    public override uint EncryptionConstant { get => ReadUInt32LittleEndian(Data.AsSpan(0x00)); set => WriteUInt32LittleEndian(Data.AsSpan(0x00), value); }
    public ushort Sanity { get => ReadUInt16LittleEndian(Data.AsSpan(0x04)); set => WriteUInt16LittleEndian(Data.AsSpan(0x04), value); }
    public ushort Checksum { get => ReadUInt16LittleEndian(Data.AsSpan(0x06)); set => WriteUInt16LittleEndian(Data.AsSpan(0x06), value); }

    // Structure
    #region Block A
    public override ushort Species { get => ReadUInt16LittleEndian(Data.AsSpan(0x08)); set => WriteUInt16LittleEndian(Data.AsSpan(0x08), value); }
    public override int HeldItem { get => ReadUInt16LittleEndian(Data.AsSpan(0x0A)); set => WriteUInt16LittleEndian(Data.AsSpan(0x0A), (ushort)value); }
    public override uint ID32 { get => ReadUInt32LittleEndian(Data.AsSpan(0x0C)); set => WriteUInt32LittleEndian(Data.AsSpan(0x0C), value); }
    public override ushort TID16 { get => ReadUInt16LittleEndian(Data.AsSpan(0x0C)); set => WriteUInt16LittleEndian(Data.AsSpan(0x0C), value); }
    public override ushort SID16 { get => ReadUInt16LittleEndian(Data.AsSpan(0x0E)); set => WriteUInt16LittleEndian(Data.AsSpan(0x0E), value); }
    public override uint EXP { get => ReadUInt32LittleEndian(Data.AsSpan(0x10)); set => WriteUInt32LittleEndian(Data.AsSpan(0x10), value); }
    public override int Ability { get => ReadUInt16LittleEndian(Data.AsSpan(0x14)); set => WriteUInt16LittleEndian(Data.AsSpan(0x14), (ushort)value); }
    public override int AbilityNumber { get => Data[0x16] & 7; set => Data[0x16] = (byte)((Data[0x16] & ~7) | (value & 7)); }
    public bool IsFavorite { get => (Data[0x16] & 8) != 0; set => Data[0x16] = (byte)((Data[0x16] & ~8) | ((value ? 1 : 0) << 3)); } // unused, was in LGP/E but not in SW/SH
    public bool CanGigantamax { get => (Data[0x16] & 16) != 0; set => Data[0x16] = (byte)((Data[0x16] & ~16) | (value ? 16 : 0)); }
    // 0x17 alignment unused
    public override int MarkValue { get => ReadUInt16LittleEndian(Data.AsSpan(0x18)); set => WriteUInt16LittleEndian(Data.AsSpan(0x18), (ushort)value); }
    // 0x1A alignment unused
    // 0x1B alignment unused
    public override uint PID { get => ReadUInt32LittleEndian(Data.AsSpan(0x1C)); set => WriteUInt32LittleEndian(Data.AsSpan(0x1C), value); }
    public override int Nature { get => Data[0x20]; set => Data[0x20] = (byte)value; }
    public override int StatNature { get => Data[0x21]; set => Data[0x21] = (byte)value; }
    public override bool FatefulEncounter { get => (Data[0x22] & 1) == 1; set => Data[0x22] = (byte)((Data[0x22] & ~0x01) | (value ? 1 : 0)); }
    public bool Flag2 { get => (Data[0x22] & 2) == 2; set => Data[0x22] = (byte)((Data[0x22] & ~0x02) | (value ? 2 : 0)); }
    public override int Gender { get => (Data[0x22] >> 2) & 0x3; set => Data[0x22] = (byte)((Data[0x22] & 0xF3) | (value << 2)); }
    // 0x23 alignment unused

    public override byte Form { get => Data[0x24]; set => WriteUInt16LittleEndian(Data.AsSpan(0x24), value); }
    public override int EV_HP { get => Data[0x26]; set => Data[0x26] = (byte)value; }
    public override int EV_ATK { get => Data[0x27]; set => Data[0x27] = (byte)value; }
    public override int EV_DEF { get => Data[0x28]; set => Data[0x28] = (byte)value; }
    public override int EV_SPE { get => Data[0x29]; set => Data[0x29] = (byte)value; }
    public override int EV_SPA { get => Data[0x2A]; set => Data[0x2A] = (byte)value; }
    public override int EV_SPD { get => Data[0x2B]; set => Data[0x2B] = (byte)value; }
    public byte CNT_Cool { get => Data[0x2C]; set => Data[0x2C] = value; }
    public byte CNT_Beauty { get => Data[0x2D]; set => Data[0x2D] = value; }
    public byte CNT_Cute { get => Data[0x2E]; set => Data[0x2E] = value; }
    public byte CNT_Smart { get => Data[0x2F]; set => Data[0x2F] = value; }
    public byte CNT_Tough { get => Data[0x30]; set => Data[0x30] = value; }
    public byte CNT_Sheen { get => Data[0x31]; set => Data[0x31] = value; }
    public byte PKRS { get => Data[0x32]; set => Data[0x32] = value; }
    public override int PKRS_Days { get => PKRS & 0xF; set => PKRS = (byte)((PKRS & ~0xF) | value); }
    public override int PKRS_Strain { get => PKRS >> 4; set => PKRS = (byte)((PKRS & 0xF) | (value << 4)); }
    // 0x33 unused padding

    // ribbon u32
    public bool RibbonChampionKalos { get => FlagUtil.GetFlag(Data, 0x34, 0); set => FlagUtil.SetFlag(Data, 0x34, 0, value); }
    public bool RibbonChampionG3 { get => FlagUtil.GetFlag(Data, 0x34, 1); set => FlagUtil.SetFlag(Data, 0x34, 1, value); }
    public bool RibbonChampionSinnoh { get => FlagUtil.GetFlag(Data, 0x34, 2); set => FlagUtil.SetFlag(Data, 0x34, 2, value); }
    public bool RibbonBestFriends { get => FlagUtil.GetFlag(Data, 0x34, 3); set => FlagUtil.SetFlag(Data, 0x34, 3, value); }
    public bool RibbonTraining { get => FlagUtil.GetFlag(Data, 0x34, 4); set => FlagUtil.SetFlag(Data, 0x34, 4, value); }
    public bool RibbonBattlerSkillful { get => FlagUtil.GetFlag(Data, 0x34, 5); set => FlagUtil.SetFlag(Data, 0x34, 5, value); }
    public bool RibbonBattlerExpert { get => FlagUtil.GetFlag(Data, 0x34, 6); set => FlagUtil.SetFlag(Data, 0x34, 6, value); }
    public bool RibbonEffort { get => FlagUtil.GetFlag(Data, 0x34, 7); set => FlagUtil.SetFlag(Data, 0x34, 7, value); }

    public bool RibbonAlert { get => FlagUtil.GetFlag(Data, 0x35, 0); set => FlagUtil.SetFlag(Data, 0x35, 0, value); }
    public bool RibbonShock { get => FlagUtil.GetFlag(Data, 0x35, 1); set => FlagUtil.SetFlag(Data, 0x35, 1, value); }
    public bool RibbonDowncast { get => FlagUtil.GetFlag(Data, 0x35, 2); set => FlagUtil.SetFlag(Data, 0x35, 2, value); }
    public bool RibbonCareless { get => FlagUtil.GetFlag(Data, 0x35, 3); set => FlagUtil.SetFlag(Data, 0x35, 3, value); }
    public bool RibbonRelax { get => FlagUtil.GetFlag(Data, 0x35, 4); set => FlagUtil.SetFlag(Data, 0x35, 4, value); }
    public bool RibbonSnooze { get => FlagUtil.GetFlag(Data, 0x35, 5); set => FlagUtil.SetFlag(Data, 0x35, 5, value); }
    public bool RibbonSmile { get => FlagUtil.GetFlag(Data, 0x35, 6); set => FlagUtil.SetFlag(Data, 0x35, 6, value); }
    public bool RibbonGorgeous { get => FlagUtil.GetFlag(Data, 0x35, 7); set => FlagUtil.SetFlag(Data, 0x35, 7, value); }

    public bool RibbonRoyal { get => FlagUtil.GetFlag(Data, 0x36, 0); set => FlagUtil.SetFlag(Data, 0x36, 0, value); }
    public bool RibbonGorgeousRoyal { get => FlagUtil.GetFlag(Data, 0x36, 1); set => FlagUtil.SetFlag(Data, 0x36, 1, value); }
    public bool RibbonArtist { get => FlagUtil.GetFlag(Data, 0x36, 2); set => FlagUtil.SetFlag(Data, 0x36, 2, value); }
    public bool RibbonFootprint { get => FlagUtil.GetFlag(Data, 0x36, 3); set => FlagUtil.SetFlag(Data, 0x36, 3, value); }
    public bool RibbonRecord { get => FlagUtil.GetFlag(Data, 0x36, 4); set => FlagUtil.SetFlag(Data, 0x36, 4, value); }
    public bool RibbonLegend { get => FlagUtil.GetFlag(Data, 0x36, 5); set => FlagUtil.SetFlag(Data, 0x36, 5, value); }
    public bool RibbonCountry { get => FlagUtil.GetFlag(Data, 0x36, 6); set => FlagUtil.SetFlag(Data, 0x36, 6, value); }
    public bool RibbonNational { get => FlagUtil.GetFlag(Data, 0x36, 7); set => FlagUtil.SetFlag(Data, 0x36, 7, value); }

    public bool RibbonEarth { get => FlagUtil.GetFlag(Data, 0x37, 0); set => FlagUtil.SetFlag(Data, 0x37, 0, value); }
    public bool RibbonWorld { get => FlagUtil.GetFlag(Data, 0x37, 1); set => FlagUtil.SetFlag(Data, 0x37, 1, value); }
    public bool RibbonClassic { get => FlagUtil.GetFlag(Data, 0x37, 2); set => FlagUtil.SetFlag(Data, 0x37, 2, value); }
    public bool RibbonPremier { get => FlagUtil.GetFlag(Data, 0x37, 3); set => FlagUtil.SetFlag(Data, 0x37, 3, value); }
    public bool RibbonEvent { get => FlagUtil.GetFlag(Data, 0x37, 4); set => FlagUtil.SetFlag(Data, 0x37, 4, value); }
    public bool RibbonBirthday { get => FlagUtil.GetFlag(Data, 0x37, 5); set => FlagUtil.SetFlag(Data, 0x37, 5, value); }
    public bool RibbonSpecial { get => FlagUtil.GetFlag(Data, 0x37, 6); set => FlagUtil.SetFlag(Data, 0x37, 6, value); }
    public bool RibbonSouvenir { get => FlagUtil.GetFlag(Data, 0x37, 7); set => FlagUtil.SetFlag(Data, 0x37, 7, value); }

    // ribbon u32
    public bool RibbonWishing { get => FlagUtil.GetFlag(Data, 0x38, 0); set => FlagUtil.SetFlag(Data, 0x38, 0, value); }
    public bool RibbonChampionBattle { get => FlagUtil.GetFlag(Data, 0x38, 1); set => FlagUtil.SetFlag(Data, 0x38, 1, value); }
    public bool RibbonChampionRegional { get => FlagUtil.GetFlag(Data, 0x38, 2); set => FlagUtil.SetFlag(Data, 0x38, 2, value); }
    public bool RibbonChampionNational { get => FlagUtil.GetFlag(Data, 0x38, 3); set => FlagUtil.SetFlag(Data, 0x38, 3, value); }
    public bool RibbonChampionWorld { get => FlagUtil.GetFlag(Data, 0x38, 4); set => FlagUtil.SetFlag(Data, 0x38, 4, value); }
    public bool HasContestMemoryRibbon { get => FlagUtil.GetFlag(Data, 0x38, 5); set => FlagUtil.SetFlag(Data, 0x38, 5, value); }
    public bool HasBattleMemoryRibbon { get => FlagUtil.GetFlag(Data, 0x38, 6); set => FlagUtil.SetFlag(Data, 0x38, 6, value); }
    public bool RibbonChampionG6Hoenn { get => FlagUtil.GetFlag(Data, 0x38, 7); set => FlagUtil.SetFlag(Data, 0x38, 7, value); }

    public bool RibbonContestStar { get => FlagUtil.GetFlag(Data, 0x39, 0); set => FlagUtil.SetFlag(Data, 0x39, 0, value); }
    public bool RibbonMasterCoolness { get => FlagUtil.GetFlag(Data, 0x39, 1); set => FlagUtil.SetFlag(Data, 0x39, 1, value); }
    public bool RibbonMasterBeauty { get => FlagUtil.GetFlag(Data, 0x39, 2); set => FlagUtil.SetFlag(Data, 0x39, 2, value); }
    public bool RibbonMasterCuteness { get => FlagUtil.GetFlag(Data, 0x39, 3); set => FlagUtil.SetFlag(Data, 0x39, 3, value); }
    public bool RibbonMasterCleverness { get => FlagUtil.GetFlag(Data, 0x39, 4); set => FlagUtil.SetFlag(Data, 0x39, 4, value); }
    public bool RibbonMasterToughness { get => FlagUtil.GetFlag(Data, 0x39, 5); set => FlagUtil.SetFlag(Data, 0x39, 5, value); }
    public bool RibbonChampionAlola { get => FlagUtil.GetFlag(Data, 0x39, 6); set => FlagUtil.SetFlag(Data, 0x39, 6, value); }
    public bool RibbonBattleRoyale { get => FlagUtil.GetFlag(Data, 0x39, 7); set => FlagUtil.SetFlag(Data, 0x39, 7, value); }

    public bool RibbonBattleTreeGreat { get => FlagUtil.GetFlag(Data, 0x3A, 0); set => FlagUtil.SetFlag(Data, 0x3A, 0, value); }
    public bool RibbonBattleTreeMaster { get => FlagUtil.GetFlag(Data, 0x3A, 1); set => FlagUtil.SetFlag(Data, 0x3A, 1, value); }
    public bool RibbonChampionGalar { get => FlagUtil.GetFlag(Data, 0x3A, 2); set => FlagUtil.SetFlag(Data, 0x3A, 2, value); }
    public bool RibbonTowerMaster { get => FlagUtil.GetFlag(Data, 0x3A, 3); set => FlagUtil.SetFlag(Data, 0x3A, 3, value); }
    public bool RibbonMasterRank { get => FlagUtil.GetFlag(Data, 0x3A, 4); set => FlagUtil.SetFlag(Data, 0x3A, 4, value); }
    public bool RibbonMarkLunchtime { get => FlagUtil.GetFlag(Data, 0x3A, 5); set => FlagUtil.SetFlag(Data, 0x3A, 5, value); }
    public bool RibbonMarkSleepyTime { get => FlagUtil.GetFlag(Data, 0x3A, 6); set => FlagUtil.SetFlag(Data, 0x3A, 6, value); }
    public bool RibbonMarkDusk { get => FlagUtil.GetFlag(Data, 0x3A, 7); set => FlagUtil.SetFlag(Data, 0x3A, 7, value); }

    public bool RibbonMarkDawn { get => FlagUtil.GetFlag(Data, 0x3B, 0); set => FlagUtil.SetFlag(Data, 0x3B, 0, value); }
    public bool RibbonMarkCloudy { get => FlagUtil.GetFlag(Data, 0x3B, 1); set => FlagUtil.SetFlag(Data, 0x3B, 1, value); }
    public bool RibbonMarkRainy { get => FlagUtil.GetFlag(Data, 0x3B, 2); set => FlagUtil.SetFlag(Data, 0x3B, 2, value); }
    public bool RibbonMarkStormy { get => FlagUtil.GetFlag(Data, 0x3B, 3); set => FlagUtil.SetFlag(Data, 0x3B, 3, value); }
    public bool RibbonMarkSnowy { get => FlagUtil.GetFlag(Data, 0x3B, 4); set => FlagUtil.SetFlag(Data, 0x3B, 4, value); }
    public bool RibbonMarkBlizzard { get => FlagUtil.GetFlag(Data, 0x3B, 5); set => FlagUtil.SetFlag(Data, 0x3B, 5, value); }
    public bool RibbonMarkDry { get => FlagUtil.GetFlag(Data, 0x3B, 6); set => FlagUtil.SetFlag(Data, 0x3B, 6, value); }
    public bool RibbonMarkSandstorm { get => FlagUtil.GetFlag(Data, 0x3B, 7); set => FlagUtil.SetFlag(Data, 0x3B, 7, value); }
    public byte RibbonCountMemoryContest { get => Data[0x3C]; set => HasContestMemoryRibbon = (Data[0x3C] = value) != 0; }
    public byte RibbonCountMemoryBattle  { get => Data[0x3D]; set => HasBattleMemoryRibbon =  (Data[0x3D] = value) != 0; }
    // 0x3E padding
    // 0x3F padding

    // 0x40 Ribbon 1
    public bool RibbonMarkMisty { get => FlagUtil.GetFlag(Data, 0x40, 0); set => FlagUtil.SetFlag(Data, 0x40, 0, value); }
    public bool RibbonMarkDestiny { get => FlagUtil.GetFlag(Data, 0x40, 1); set => FlagUtil.SetFlag(Data, 0x40, 1, value); }
    public bool RibbonMarkFishing { get => FlagUtil.GetFlag(Data, 0x40, 2); set => FlagUtil.SetFlag(Data, 0x40, 2, value); }
    public bool RibbonMarkCurry { get => FlagUtil.GetFlag(Data, 0x40, 3); set => FlagUtil.SetFlag(Data, 0x40, 3, value); }
    public bool RibbonMarkUncommon { get => FlagUtil.GetFlag(Data, 0x40, 4); set => FlagUtil.SetFlag(Data, 0x40, 4, value); }
    public bool RibbonMarkRare { get => FlagUtil.GetFlag(Data, 0x40, 5); set => FlagUtil.SetFlag(Data, 0x40, 5, value); }
    public bool RibbonMarkRowdy { get => FlagUtil.GetFlag(Data, 0x40, 6); set => FlagUtil.SetFlag(Data, 0x40, 6, value); }
    public bool RibbonMarkAbsentMinded { get => FlagUtil.GetFlag(Data, 0x40, 7); set => FlagUtil.SetFlag(Data, 0x40, 7, value); }

    public bool RibbonMarkJittery { get => FlagUtil.GetFlag(Data, 0x41, 0); set => FlagUtil.SetFlag(Data, 0x41, 0, value); }
    public bool RibbonMarkExcited { get => FlagUtil.GetFlag(Data, 0x41, 1); set => FlagUtil.SetFlag(Data, 0x41, 1, value); }
    public bool RibbonMarkCharismatic { get => FlagUtil.GetFlag(Data, 0x41, 2); set => FlagUtil.SetFlag(Data, 0x41, 2, value); }
    public bool RibbonMarkCalmness { get => FlagUtil.GetFlag(Data, 0x41, 3); set => FlagUtil.SetFlag(Data, 0x41, 3, value); }
    public bool RibbonMarkIntense { get => FlagUtil.GetFlag(Data, 0x41, 4); set => FlagUtil.SetFlag(Data, 0x41, 4, value); }
    public bool RibbonMarkZonedOut { get => FlagUtil.GetFlag(Data, 0x41, 5); set => FlagUtil.SetFlag(Data, 0x41, 5, value); }
    public bool RibbonMarkJoyful { get => FlagUtil.GetFlag(Data, 0x41, 6); set => FlagUtil.SetFlag(Data, 0x41, 6, value); }
    public bool RibbonMarkAngry { get => FlagUtil.GetFlag(Data, 0x41, 7); set => FlagUtil.SetFlag(Data, 0x41, 7, value); }

    public bool RibbonMarkSmiley { get => FlagUtil.GetFlag(Data, 0x42, 0); set => FlagUtil.SetFlag(Data, 0x42, 0, value); }
    public bool RibbonMarkTeary { get => FlagUtil.GetFlag(Data, 0x42, 1); set => FlagUtil.SetFlag(Data, 0x42, 1, value); }
    public bool RibbonMarkUpbeat { get => FlagUtil.GetFlag(Data, 0x42, 2); set => FlagUtil.SetFlag(Data, 0x42, 2, value); }
    public bool RibbonMarkPeeved { get => FlagUtil.GetFlag(Data, 0x42, 3); set => FlagUtil.SetFlag(Data, 0x42, 3, value); }
    public bool RibbonMarkIntellectual { get => FlagUtil.GetFlag(Data, 0x42, 4); set => FlagUtil.SetFlag(Data, 0x42, 4, value); }
    public bool RibbonMarkFerocious { get => FlagUtil.GetFlag(Data, 0x42, 5); set => FlagUtil.SetFlag(Data, 0x42, 5, value); }
    public bool RibbonMarkCrafty { get => FlagUtil.GetFlag(Data, 0x42, 6); set => FlagUtil.SetFlag(Data, 0x42, 6, value); }
    public bool RibbonMarkScowling { get => FlagUtil.GetFlag(Data, 0x42, 7); set => FlagUtil.SetFlag(Data, 0x42, 7, value); }

    public bool RibbonMarkKindly { get => FlagUtil.GetFlag(Data, 0x43, 0); set => FlagUtil.SetFlag(Data, 0x43, 0, value); }
    public bool RibbonMarkFlustered { get => FlagUtil.GetFlag(Data, 0x43, 1); set => FlagUtil.SetFlag(Data, 0x43, 1, value); }
    public bool RibbonMarkPumpedUp { get => FlagUtil.GetFlag(Data, 0x43, 2); set => FlagUtil.SetFlag(Data, 0x43, 2, value); }
    public bool RibbonMarkZeroEnergy { get => FlagUtil.GetFlag(Data, 0x43, 3); set => FlagUtil.SetFlag(Data, 0x43, 3, value); }
    public bool RibbonMarkPrideful { get => FlagUtil.GetFlag(Data, 0x43, 4); set => FlagUtil.SetFlag(Data, 0x43, 4, value); }
    public bool RibbonMarkUnsure { get => FlagUtil.GetFlag(Data, 0x43, 5); set => FlagUtil.SetFlag(Data, 0x43, 5, value); }
    public bool RibbonMarkHumble { get => FlagUtil.GetFlag(Data, 0x43, 6); set => FlagUtil.SetFlag(Data, 0x43, 6, value); }
    public bool RibbonMarkThorny { get => FlagUtil.GetFlag(Data, 0x43, 7); set => FlagUtil.SetFlag(Data, 0x43, 7, value); }
    // 0x44 Ribbon 2

    public bool RibbonMarkVigor       { get => FlagUtil.GetFlag(Data, 0x44, 0); set => FlagUtil.SetFlag(Data, 0x44, 0, value); }
    public bool RibbonMarkSlump       { get => FlagUtil.GetFlag(Data, 0x44, 1); set => FlagUtil.SetFlag(Data, 0x44, 1, value); }
    public bool RibbonHisui           { get => FlagUtil.GetFlag(Data, 0x44, 2); set => FlagUtil.SetFlag(Data, 0x44, 2, value); }
    public bool RibbonTwinklingStar   { get => FlagUtil.GetFlag(Data, 0x44, 3); set => FlagUtil.SetFlag(Data, 0x44, 3, value); }
    public bool RibbonChampionPaldea  { get => FlagUtil.GetFlag(Data, 0x44, 4); set => FlagUtil.SetFlag(Data, 0x44, 4, value); }
    public bool RibbonMarkJumbo       { get => FlagUtil.GetFlag(Data, 0x44, 5); set => FlagUtil.SetFlag(Data, 0x44, 5, value); }
    public bool RibbonMarkMini        { get => FlagUtil.GetFlag(Data, 0x44, 6); set => FlagUtil.SetFlag(Data, 0x44, 6, value); }
    public bool RibbonMarkItemfinder  { get => FlagUtil.GetFlag(Data, 0x44, 7); set => FlagUtil.SetFlag(Data, 0x44, 7, value); }

    public bool RibbonMarkPartner     { get => FlagUtil.GetFlag(Data, 0x45, 0); set => FlagUtil.SetFlag(Data, 0x45, 0, value); }
    public bool RibbonMarkGourmand    { get => FlagUtil.GetFlag(Data, 0x45, 1); set => FlagUtil.SetFlag(Data, 0x45, 1, value); }
    public bool RibbonOnceInALifetime { get => FlagUtil.GetFlag(Data, 0x45, 2); set => FlagUtil.SetFlag(Data, 0x45, 2, value); }
    public bool RibbonMarkAlpha       { get => FlagUtil.GetFlag(Data, 0x45, 3); set => FlagUtil.SetFlag(Data, 0x45, 3, value); }
    public bool RibbonMarkMightiest   { get => FlagUtil.GetFlag(Data, 0x45, 4); set => FlagUtil.SetFlag(Data, 0x45, 4, value); }
    public bool RibbonMarkTitan       { get => FlagUtil.GetFlag(Data, 0x45, 5); set => FlagUtil.SetFlag(Data, 0x45, 5, value); }
    public bool RIB45_6 { get => FlagUtil.GetFlag(Data, 0x45, 6); set => FlagUtil.SetFlag(Data, 0x45, 6, value); }
    public bool RIB45_7 { get => FlagUtil.GetFlag(Data, 0x45, 7); set => FlagUtil.SetFlag(Data, 0x45, 7, value); }

    public bool RIB46_0 { get => FlagUtil.GetFlag(Data, 0x46, 0); set => FlagUtil.SetFlag(Data, 0x46, 0, value); }
    public bool RIB46_1 { get => FlagUtil.GetFlag(Data, 0x46, 1); set => FlagUtil.SetFlag(Data, 0x46, 1, value); }
    public bool RIB46_2 { get => FlagUtil.GetFlag(Data, 0x46, 2); set => FlagUtil.SetFlag(Data, 0x46, 2, value); }
    public bool RIB46_3 { get => FlagUtil.GetFlag(Data, 0x46, 3); set => FlagUtil.SetFlag(Data, 0x46, 3, value); }
    public bool RIB46_4 { get => FlagUtil.GetFlag(Data, 0x46, 4); set => FlagUtil.SetFlag(Data, 0x46, 4, value); }
    public bool RIB46_5 { get => FlagUtil.GetFlag(Data, 0x46, 5); set => FlagUtil.SetFlag(Data, 0x46, 5, value); }
    public bool RIB46_6 { get => FlagUtil.GetFlag(Data, 0x46, 6); set => FlagUtil.SetFlag(Data, 0x46, 6, value); }
    public bool RIB46_7 { get => FlagUtil.GetFlag(Data, 0x46, 7); set => FlagUtil.SetFlag(Data, 0x46, 7, value); }

    public bool RIB47_0 { get => FlagUtil.GetFlag(Data, 0x47, 0); set => FlagUtil.SetFlag(Data, 0x47, 0, value); }
    public bool RIB47_1 { get => FlagUtil.GetFlag(Data, 0x47, 1); set => FlagUtil.SetFlag(Data, 0x47, 1, value); }
    public bool RIB47_2 { get => FlagUtil.GetFlag(Data, 0x47, 2); set => FlagUtil.SetFlag(Data, 0x47, 2, value); }
    public bool RIB47_3 { get => FlagUtil.GetFlag(Data, 0x47, 3); set => FlagUtil.SetFlag(Data, 0x47, 3, value); }
    public bool RIB47_4 { get => FlagUtil.GetFlag(Data, 0x47, 4); set => FlagUtil.SetFlag(Data, 0x47, 4, value); }
    public bool RIB47_5 { get => FlagUtil.GetFlag(Data, 0x47, 5); set => FlagUtil.SetFlag(Data, 0x47, 5, value); }
    public bool RIB47_6 { get => FlagUtil.GetFlag(Data, 0x47, 6); set => FlagUtil.SetFlag(Data, 0x47, 6, value); }
    public bool RIB47_7 { get => FlagUtil.GetFlag(Data, 0x47, 7); set => FlagUtil.SetFlag(Data, 0x47, 7, value); }

    public int RibbonCount     => BitOperations.PopCount(ReadUInt64LittleEndian(Data.AsSpan(0x34)) & 0b00000000_00011111__11111111_11111111__11111111_11111111__11111111_11111111)
                                + BitOperations.PopCount(ReadUInt64LittleEndian(Data.AsSpan(0x40)) & 0b00000000_00000000__00000100_00011100__00000000_00000000__00000000_00000000);
    public int MarkCount       => BitOperations.PopCount(ReadUInt64LittleEndian(Data.AsSpan(0x34)) & 0b11111111_11100000__00000000_00000000__00000000_00000000__00000000_00000000)
                                + BitOperations.PopCount(ReadUInt64LittleEndian(Data.AsSpan(0x40)) & 0b00000000_00000000__00111011_11100011__11111111_11111111__11111111_11111111);
    public int RibbonMarkCount => BitOperations.PopCount(ReadUInt64LittleEndian(Data.AsSpan(0x34)) & 0b11111111_11111111__11111111_11111111__11111111_11111111__11111111_11111111)
                                + BitOperations.PopCount(ReadUInt64LittleEndian(Data.AsSpan(0x40)) & 0b00000000_00000000__00111111_11111111__11111111_11111111__11111111_11111111);

    public bool HasMarkEncounter8 => BitOperations.PopCount(ReadUInt64LittleEndian(Data.AsSpan(0x34)) & 0b11111111_11100000__00000000_00000000__00000000_00000000__00000000_00000000)
                                   + BitOperations.PopCount(ReadUInt64LittleEndian(Data.AsSpan(0x40)) & 0b00000000_00000000__00000000_00000011__11111111_11111111__11111111_11111111) != 0;
    public bool HasMarkEncounter9 => (Data[0x45] & 0b00111000) != 0;

    public uint Sociability { get => ReadUInt32LittleEndian(Data.AsSpan(0x48)); set => WriteUInt32LittleEndian(Data.AsSpan(0x48), value); }

    // 0x4C-0x4F unused

    public byte HeightScalar { get => Data[0x50]; set => Data[0x50] = value; }
    public byte WeightScalar { get => Data[0x51]; set => Data[0x51] = value; }

    // 0x52-0x57 unused

    #endregion
    #region Block B
    public override string Nickname
    {
        get => StringConverter8.GetString(Nickname_Trash);
        set => StringConverter8.SetString(Nickname_Trash, value, 12, StringConverterOption.None);
    }

    // 2 bytes for \0, automatically handled above

    public override ushort Move1 { get => ReadUInt16LittleEndian(Data.AsSpan(0x72)); set => WriteUInt16LittleEndian(Data.AsSpan(0x72), value); }
    public override ushort Move2 { get => ReadUInt16LittleEndian(Data.AsSpan(0x74)); set => WriteUInt16LittleEndian(Data.AsSpan(0x74), value); }
    public override ushort Move3 { get => ReadUInt16LittleEndian(Data.AsSpan(0x76)); set => WriteUInt16LittleEndian(Data.AsSpan(0x76), value); }
    public override ushort Move4 { get => ReadUInt16LittleEndian(Data.AsSpan(0x78)); set => WriteUInt16LittleEndian(Data.AsSpan(0x78), value); }

    public override int Move1_PP { get => Data[0x7A]; set => Data[0x7A] = (byte)value; }
    public override int Move2_PP { get => Data[0x7B]; set => Data[0x7B] = (byte)value; }
    public override int Move3_PP { get => Data[0x7C]; set => Data[0x7C] = (byte)value; }
    public override int Move4_PP { get => Data[0x7D]; set => Data[0x7D] = (byte)value; }
    public override int Move1_PPUps { get => Data[0x7E]; set => Data[0x7E] = (byte)value; }
    public override int Move2_PPUps { get => Data[0x7F]; set => Data[0x7F] = (byte)value; }
    public override int Move3_PPUps { get => Data[0x80]; set => Data[0x80] = (byte)value; }
    public override int Move4_PPUps { get => Data[0x81]; set => Data[0x81] = (byte)value; }

    public override ushort RelearnMove1 { get => ReadUInt16LittleEndian(Data.AsSpan(0x82)); set => WriteUInt16LittleEndian(Data.AsSpan(0x82), value); }
    public override ushort RelearnMove2 { get => ReadUInt16LittleEndian(Data.AsSpan(0x84)); set => WriteUInt16LittleEndian(Data.AsSpan(0x84), value); }
    public override ushort RelearnMove3 { get => ReadUInt16LittleEndian(Data.AsSpan(0x86)); set => WriteUInt16LittleEndian(Data.AsSpan(0x86), value); }
    public override ushort RelearnMove4 { get => ReadUInt16LittleEndian(Data.AsSpan(0x88)); set => WriteUInt16LittleEndian(Data.AsSpan(0x88), value); }

    public override int Stat_HPCurrent { get => ReadUInt16LittleEndian(Data.AsSpan(0x8A)); set => WriteUInt16LittleEndian(Data.AsSpan(0x8A), (ushort)value); }

    private uint IV32 { get => ReadUInt32LittleEndian(Data.AsSpan(0x8C)); set => WriteUInt32LittleEndian(Data.AsSpan(0x8C), value); }
    public override int IV_HP { get => (int)(IV32 >> 00) & 0x1F; set => IV32 = (IV32 & ~(0x1Fu << 00)) | ((value > 31 ? 31u : (uint)value) << 00); }
    public override int IV_ATK { get => (int)(IV32 >> 05) & 0x1F; set => IV32 = (IV32 & ~(0x1Fu << 05)) | ((value > 31 ? 31u : (uint)value) << 05); }
    public override int IV_DEF { get => (int)(IV32 >> 10) & 0x1F; set => IV32 = (IV32 & ~(0x1Fu << 10)) | ((value > 31 ? 31u : (uint)value) << 10); }
    public override int IV_SPE { get => (int)(IV32 >> 15) & 0x1F; set => IV32 = (IV32 & ~(0x1Fu << 15)) | ((value > 31 ? 31u : (uint)value) << 15); }
    public override int IV_SPA { get => (int)(IV32 >> 20) & 0x1F; set => IV32 = (IV32 & ~(0x1Fu << 20)) | ((value > 31 ? 31u : (uint)value) << 20); }
    public override int IV_SPD { get => (int)(IV32 >> 25) & 0x1F; set => IV32 = (IV32 & ~(0x1Fu << 25)) | ((value > 31 ? 31u : (uint)value) << 25); }
    public override bool IsEgg { get => ((IV32 >> 30) & 1) == 1; set => IV32 = (IV32 & ~0x40000000u) | (value ? 0x40000000u : 0u); }
    public override bool IsNicknamed { get => ((IV32 >> 31) & 1) == 1; set => IV32 = (IV32 & 0x7FFFFFFFu) | (value ? 0x80000000u : 0u); }

    public byte DynamaxLevel { get => Data[0x90]; set => Data[0x90] = value; }

    // 0x91-0x93 unused

    public override int Status_Condition { get => ReadInt32LittleEndian(Data.AsSpan(0x94)); set => WriteInt32LittleEndian(Data.AsSpan(0x94), value); }
    public int Palma { get => ReadInt32LittleEndian(Data.AsSpan(0x98)); set => WriteInt32LittleEndian(Data.AsSpan(0x98), value); }

    // 0x9C-0xA7 unused

    #endregion
    #region Block C
    public override string HT_Name
    {
        get => StringConverter8.GetString(HT_Trash);
        set => StringConverter8.SetString(HT_Trash, value, 12, StringConverterOption.None);
    }

    public override int HT_Gender { get => Data[0xC2]; set => Data[0xC2] = (byte)value; }
    public byte HT_Language { get => Data[0xC3]; set => Data[0xC3] = value; }
    public override int CurrentHandler { get => Data[0xC4]; set => Data[0xC4] = (byte)value; }
    // 0xC5 unused (alignment)
    public int HT_TrainerID { get => ReadUInt16LittleEndian(Data.AsSpan(0xC6)); set => WriteUInt16LittleEndian(Data.AsSpan(0xC6), (ushort)value); } // unused?
    public override int HT_Friendship { get => Data[0xC8]; set => Data[0xC8] = (byte)value; }
    public byte HT_Intensity { get => Data[0xC9]; set => Data[0xC9] = value; }
    public byte HT_Memory { get => Data[0xCA]; set => Data[0xCA] = value; }
    public byte HT_Feeling { get => Data[0xCB]; set => Data[0xCB] = value; }
    public ushort HT_TextVar { get => ReadUInt16LittleEndian(Data.AsSpan(0xCC)); set => WriteUInt16LittleEndian(Data.AsSpan(0xCC), value); }

    public Span<byte> PokeJob => Data.AsSpan(0xCE, 14);
    public bool GetPokeJobFlag(int index) => FlagUtil.GetFlag(PokeJob, index >> 3, index & 7);
    public void SetPokeJobFlag(int index, bool value) => FlagUtil.SetFlag(PokeJob, index >> 3, index & 7, value);
    public bool GetPokeJobFlagAny() => PokeJob.IndexOfAnyExcept<byte>(0) >= 0;
    public void ClearPokeJobFlags() => PokeJob.Clear();

    public override byte Fullness { get => Data[0xDC]; set => Data[0xDC] = value; }
    public override byte Enjoyment { get => Data[0xDD]; set => Data[0xDD] = value; }
    public override int Version { get => Data[0xDE]; set => Data[0xDE] = (byte)value; }
    public byte BattleVersion { get => Data[0xDF]; set => Data[0xDF] = value; }
    // public override byte Region { get => Data[0xE0]; set => Data[0xE0] = (byte)value; }
    // public override byte ConsoleRegion { get => Data[0xE1]; set => Data[0xE1] = (byte)value; }
    public override int Language { get => Data[0xE2]; set => Data[0xE2] = (byte)value; }
    // 0xE3 alignment
    public uint FormArgument { get => ReadUInt32LittleEndian(Data.AsSpan(0xE4)); set => WriteUInt32LittleEndian(Data.AsSpan(0xE4), value); }
    public byte FormArgumentRemain { get => (byte)FormArgument; set => FormArgument = (FormArgument & ~0xFFu) | value; }
    public byte FormArgumentElapsed { get => (byte)(FormArgument >> 8); set => FormArgument = (FormArgument & ~0xFF00u) | (uint)(value << 8); }
    public byte FormArgumentMaximum { get => (byte)(FormArgument >> 16); set => FormArgument = (FormArgument & ~0xFF0000u) | (uint)(value << 16); }
    public sbyte AffixedRibbon { get => (sbyte)Data[0xE8]; set => Data[0xE8] = (byte)value; } // selected ribbon
    // remainder unused

    #endregion
    #region Block D
    public override string OT_Name
    {
        get => StringConverter8.GetString(OT_Trash);
        set => StringConverter8.SetString(OT_Trash, value, 12, StringConverterOption.None);
    }

    public override int OT_Friendship { get => Data[0x112]; set => Data[0x112] = (byte)value; }
    public byte OT_Intensity { get => Data[0x113]; set => Data[0x113] = value; }
    public byte OT_Memory { get => Data[0x114]; set => Data[0x114] = value; }
    // 0x115 unused align
    public ushort OT_TextVar { get => ReadUInt16LittleEndian(Data.AsSpan(0x116)); set => WriteUInt16LittleEndian(Data.AsSpan(0x116), value); }
    public byte OT_Feeling { get => Data[0x118]; set => Data[0x118] = value; }
    public override int Egg_Year { get => Data[0x119]; set => Data[0x119] = (byte)value; }
    public override int Egg_Month { get => Data[0x11A]; set => Data[0x11A] = (byte)value; }
    public override int Egg_Day { get => Data[0x11B]; set => Data[0x11B] = (byte)value; }
    public override int Met_Year { get => Data[0x11C]; set => Data[0x11C] = (byte)value; }
    public override int Met_Month { get => Data[0x11D]; set => Data[0x11D] = (byte)value; }
    public override int Met_Day { get => Data[0x11E]; set => Data[0x11E] = (byte)value; }
    // 0x11F unused align
    public override int Egg_Location { get => ReadUInt16LittleEndian(Data.AsSpan(0x120)); set => WriteUInt16LittleEndian(Data.AsSpan(0x120), (ushort)value); }
    public override int Met_Location { get => ReadUInt16LittleEndian(Data.AsSpan(0x122)); set => WriteUInt16LittleEndian(Data.AsSpan(0x122), (ushort)value); }
    public override int Ball { get => Data[0x124]; set => Data[0x124] = (byte)value; }
    public override int Met_Level { get => Data[0x125] & ~0x80; set => Data[0x125] = (byte)((Data[0x125] & 0x80) | value); }
    public override int OT_Gender { get => Data[0x125] >> 7; set => Data[0x125] = (byte)((Data[0x125] & ~0x80) | (value << 7)); }
    public byte HyperTrainFlags { get => Data[0x126]; set => Data[0x126] = value; }
    public bool HT_HP  { get => ((HyperTrainFlags >> 0) & 1) == 1; set => HyperTrainFlags = (byte)((HyperTrainFlags & ~(1 << 0)) | ((value ? 1 : 0) << 0)); }
    public bool HT_ATK { get => ((HyperTrainFlags >> 1) & 1) == 1; set => HyperTrainFlags = (byte)((HyperTrainFlags & ~(1 << 1)) | ((value ? 1 : 0) << 1)); }
    public bool HT_DEF { get => ((HyperTrainFlags >> 2) & 1) == 1; set => HyperTrainFlags = (byte)((HyperTrainFlags & ~(1 << 2)) | ((value ? 1 : 0) << 2)); }
    public bool HT_SPA { get => ((HyperTrainFlags >> 3) & 1) == 1; set => HyperTrainFlags = (byte)((HyperTrainFlags & ~(1 << 3)) | ((value ? 1 : 0) << 3)); }
    public bool HT_SPD { get => ((HyperTrainFlags >> 4) & 1) == 1; set => HyperTrainFlags = (byte)((HyperTrainFlags & ~(1 << 4)) | ((value ? 1 : 0) << 4)); }
    public bool HT_SPE { get => ((HyperTrainFlags >> 5) & 1) == 1; set => HyperTrainFlags = (byte)((HyperTrainFlags & ~(1 << 5)) | ((value ? 1 : 0) << 5)); }

    public Span<byte> RecordFlags => Data.AsSpan(0x127, 14);
    public bool GetMoveRecordFlag(int index) => FlagUtil.GetFlag(RecordFlags, index >> 3, index & 7);
    public void SetMoveRecordFlag(int index, bool value) => FlagUtil.SetFlag(RecordFlags, index >> 3, index & 7, value);
    public bool GetMoveRecordFlagAny() => RecordFlags.IndexOfAnyExcept<byte>(0) >= 0;
    public void ClearMoveRecordFlags() => RecordFlags.Clear();

    // Why did you mis-align this field, GameFreak?
    public ulong Tracker
    {
        get => ReadUInt64LittleEndian(Data.AsSpan(0x135));
        set => WriteUInt64LittleEndian(Data.AsSpan(0x135), value);
    }

    #endregion
    #region Battle Stats
    public override int Stat_Level { get => Data[0x148]; set => Data[0x148] = (byte)value; }
    // 0x149 unused alignment
    public override int Stat_HPMax { get => ReadUInt16LittleEndian(Data.AsSpan(0x14A)); set => WriteUInt16LittleEndian(Data.AsSpan(0x14A), (ushort)value); }
    public override int Stat_ATK   { get => ReadUInt16LittleEndian(Data.AsSpan(0x14C)); set => WriteUInt16LittleEndian(Data.AsSpan(0x14C), (ushort)value); }
    public override int Stat_DEF   { get => ReadUInt16LittleEndian(Data.AsSpan(0x14E)); set => WriteUInt16LittleEndian(Data.AsSpan(0x14E), (ushort)value); }
    public override int Stat_SPE   { get => ReadUInt16LittleEndian(Data.AsSpan(0x150)); set => WriteUInt16LittleEndian(Data.AsSpan(0x150), (ushort)value); }
    public override int Stat_SPA   { get => ReadUInt16LittleEndian(Data.AsSpan(0x152)); set => WriteUInt16LittleEndian(Data.AsSpan(0x152), (ushort)value); }
    public override int Stat_SPD   { get => ReadUInt16LittleEndian(Data.AsSpan(0x154)); set => WriteUInt16LittleEndian(Data.AsSpan(0x154), (ushort)value); }
    #endregion

    public override int MarkingCount => 6;

    public override int GetMarking(int index)
    {
        if ((uint)index >= MarkingCount)
            throw new ArgumentOutOfRangeException(nameof(index));
        return (MarkValue >> (index * 2)) & 3;
    }

    public override void SetMarking(int index, int value)
    {
        if ((uint)index >= MarkingCount)
            throw new ArgumentOutOfRangeException(nameof(index));
        var shift = index * 2;
        MarkValue = (MarkValue & ~(0b11 << shift)) | ((value & 3) << shift);
    }

    public bool GetRibbon(int index) => FlagUtil.GetFlag(Data, GetRibbonByte(index), index & 7);
    public void SetRibbon(int index, bool value = true) => FlagUtil.SetFlag(Data, GetRibbonByte(index), index & 7, value);

    public int GetRibbonByte(int index)
    {
        if ((uint)index >= 128)
            throw new ArgumentOutOfRangeException(nameof(index));
        if (index < 64)
            return 0x34 + (index >> 3);
        index -= 64;
        return 0x40 + (index >> 3);
    }
}