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

namespace PKHeX.Core
{
    /// <summary> Generation 8 <see cref="PKM"/> format. </summary>
    public abstract class G8PKM : PKM, ISanityChecksum,
        IRibbonSetEvent3, IRibbonSetEvent4, IRibbonSetCommon3, IRibbonSetCommon4, IRibbonSetCommon6, IRibbonSetCommon7, IRibbonSetCommon8, IRibbonSetMark8, IRibbonSetAffixed,
        IContestStats, IContestStatsMutable, IHyperTrain, IScaledSize, IGigantamax, IFavorite, IDynamaxLevel, IRibbonIndex, IHandlerLanguage, IFormArgument, IHomeTrack, IBattleVersion, ITrainerMemories
    {
        public sealed override int Format => 8;
        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()
        {
            ushort chk = 0;
            for (int i = 8; i < PokeCrypto.SIZE_8STORED; i += 2)
                chk += ReadUInt16LittleEndian(Data.AsSpan(i));
            return chk;
        }

        // Simple Generated Attributes
        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 OTLength => 12;
        public override int NickLength => 12;

        public override int PSV => (int)((PID >> 16 ^ (PID & 0xFFFF)) >> 4);
        public override int TSV => (TID ^ SID) >> 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
        {
            get
            {
                int pm6 = (int)(EncryptionConstant % 6);
                int maxIV = MaximumIV;
                int pm6stat = 0;
                for (int i = 0; i < 6; i++)
                {
                    pm6stat = (pm6 + i) % 6;
                    if (GetIV(pm6stat) == maxIV)
                        break;
                }
                return (pm6stat * 5) + (maxIV % 5);
            }
        }

        // 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 int Species { get => ReadUInt16LittleEndian(Data.AsSpan(0x08)); set => WriteUInt16LittleEndian(Data.AsSpan(0x08), (ushort)value); }
        public override int HeldItem { get => ReadUInt16LittleEndian(Data.AsSpan(0x0A)); set => WriteUInt16LittleEndian(Data.AsSpan(0x0A), (ushort)value); }
        public override int TID { get => ReadUInt16LittleEndian(Data.AsSpan(0x0C)); set => WriteUInt16LittleEndian(Data.AsSpan(0x0C), (ushort)value); }
        public override int SID { get => ReadUInt16LittleEndian(Data.AsSpan(0x0E)); set => WriteUInt16LittleEndian(Data.AsSpan(0x0E), (ushort)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 Favorite { get => (Data[0x16] & 8) != 0; set => Data[0x16] = (byte)((Data[0x16] & ~8) | ((value ? 1 : 0) << 3)); } // unused, was in LGPE but not in SWSH
        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)); protected 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 int Form { get => ReadUInt16LittleEndian(Data.AsSpan(0x24)); set => WriteUInt16LittleEndian(Data.AsSpan(0x24), (ushort)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; }
        private 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 int RibbonCountMemoryContest { get => Data[0x3C]; set => HasContestMemoryRibbon = (Data[0x3C] = (byte)value) != 0; }
        public int RibbonCountMemoryBattle { get => Data[0x3D]; set => HasBattleMemoryRibbon = (Data[0x3D] = (byte)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 RibbonPioneer { 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 RIB44_4 { get => FlagUtil.GetFlag(Data, 0x44, 4); set => FlagUtil.SetFlag(Data, 0x44, 4, value); }
        public bool RIB44_5 { get => FlagUtil.GetFlag(Data, 0x44, 5); set => FlagUtil.SetFlag(Data, 0x44, 5, value); }
        public bool RIB44_6 { get => FlagUtil.GetFlag(Data, 0x44, 6); set => FlagUtil.SetFlag(Data, 0x44, 6, value); }
        public bool RIB44_7 { get => FlagUtil.GetFlag(Data, 0x44, 7); set => FlagUtil.SetFlag(Data, 0x44, 7, value); }

        public bool RIB45_0 { get => FlagUtil.GetFlag(Data, 0x45, 0); set => FlagUtil.SetFlag(Data, 0x45, 0, value); }
        public bool RIB45_1 { get => FlagUtil.GetFlag(Data, 0x45, 1); set => FlagUtil.SetFlag(Data, 0x45, 1, value); }
        public bool RIB45_2 { get => FlagUtil.GetFlag(Data, 0x45, 2); set => FlagUtil.SetFlag(Data, 0x45, 2, value); }
        public bool RIB45_3 { get => FlagUtil.GetFlag(Data, 0x45, 3); set => FlagUtil.SetFlag(Data, 0x45, 3, value); }
        public bool RIB45_4 { get => FlagUtil.GetFlag(Data, 0x45, 4); set => FlagUtil.SetFlag(Data, 0x45, 4, value); }
        public bool RIB45_5 { 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, 0x41, 0); set => FlagUtil.SetFlag(Data, 0x41, 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 bool HasMark()
        {
            var d = Data.AsSpan();
            if ((ReadUInt16LittleEndian(d[0x3A..]) & 0xFFE0) != 0)
                return true;
            if (ReadUInt32LittleEndian(d[0x40..]) != 0)
                return true;
            return (d[0x44] & 3) != 0;
        }

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

        // 0x4C-0x4F unused

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

        // 0x52-0x57 unused

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

        // 2 bytes for \0, automatically handled above

        public override int Move1 { get => ReadUInt16LittleEndian(Data.AsSpan(0x72)); set => WriteUInt16LittleEndian(Data.AsSpan(0x72), (ushort)value); }
        public override int Move2 { get => ReadUInt16LittleEndian(Data.AsSpan(0x74)); set => WriteUInt16LittleEndian(Data.AsSpan(0x74), (ushort)value); }
        public override int Move3 { get => ReadUInt16LittleEndian(Data.AsSpan(0x76)); set => WriteUInt16LittleEndian(Data.AsSpan(0x76), (ushort)value); }
        public override int Move4 { get => ReadUInt16LittleEndian(Data.AsSpan(0x78)); set => WriteUInt16LittleEndian(Data.AsSpan(0x78), (ushort)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 int RelearnMove1 { get => ReadUInt16LittleEndian(Data.AsSpan(0x82)); set => WriteUInt16LittleEndian(Data.AsSpan(0x82), (ushort)value); }
        public override int RelearnMove2 { get => ReadUInt16LittleEndian(Data.AsSpan(0x84)); set => WriteUInt16LittleEndian(Data.AsSpan(0x84), (ushort)value); }
        public override int RelearnMove3 { get => ReadUInt16LittleEndian(Data.AsSpan(0x86)); set => WriteUInt16LittleEndian(Data.AsSpan(0x86), (ushort)value); }
        public override int RelearnMove4 { get => ReadUInt16LittleEndian(Data.AsSpan(0x88)); set => WriteUInt16LittleEndian(Data.AsSpan(0x88), (ushort)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; }

        // 0x90-0x93 unused

        public override int Status_Condition { get => ReadInt32LittleEndian(Data.AsSpan(0x94)); set => WriteInt32LittleEndian(Data.AsSpan(0x94), value); }
        public int Unk98 { 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.AsSpan(), 12, StringConverterOption.None);
        }

        public override int HT_Gender { get => Data[0xC2]; set => Data[0xC2] = (byte)value; }
        public int HT_Language { get => Data[0xC3]; set => Data[0xC3] = (byte)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 int HT_Intensity { get => Data[0xC9]; set => Data[0xC9] = (byte)value; }
        public int HT_Memory { get => Data[0xCA]; set => Data[0xCA] = (byte)value; }
        public int HT_Feeling { get => Data[0xCB]; set => Data[0xCB] = (byte)value; }
        public int HT_TextVar { get => ReadUInt16LittleEndian(Data.AsSpan(0xCC)); set => WriteUInt16LittleEndian(Data.AsSpan(0xCC), (ushort)value); }

        // 0xCE-0xDB unused

        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 int BattleVersion { get => Data[0xDF]; set => Data[0xDF] = (byte)value; }
        // public override int Region { get => Data[0xE0]; set => Data[0xE0] = (byte)value; }
        // public override int ConsoleRegion { get => Data[0xE1]; set => Data[0xE1] = (byte)value; }
        public override int Language { get => Data[0xE2]; set => Data[0xE2] = (byte)value; }
        public int UnkE3 { get => Data[0xE3]; set => Data[0xE3] = (byte)value; }
        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.AsSpan(), 12, StringConverterOption.None);
        }

        public override int OT_Friendship { get => Data[0x112]; set => Data[0x112] = (byte)value; }
        public int OT_Intensity { get => Data[0x113]; set => Data[0x113] = (byte)value; }
        public int OT_Memory { get => Data[0x114]; set => Data[0x114] = (byte)value; }
        // 0x115 unused align
        public int OT_TextVar { get => ReadUInt16LittleEndian(Data.AsSpan(0x116)); set => WriteUInt16LittleEndian(Data.AsSpan(0x116), (ushort)value); }
        public int OT_Feeling { get => Data[0x118]; set => Data[0x118] = (byte)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 int HyperTrainFlags { get => Data[0x126]; set => Data[0x126] = (byte)value; }
        public bool HT_HP { get => ((HyperTrainFlags >> 0) & 1) == 1; set => HyperTrainFlags = (HyperTrainFlags & ~(1 << 0)) | ((value ? 1 : 0) << 0); }
        public bool HT_ATK { get => ((HyperTrainFlags >> 1) & 1) == 1; set => HyperTrainFlags = (HyperTrainFlags & ~(1 << 1)) | ((value ? 1 : 0) << 1); }
        public bool HT_DEF { get => ((HyperTrainFlags >> 2) & 1) == 1; set => HyperTrainFlags = (HyperTrainFlags & ~(1 << 2)) | ((value ? 1 : 0) << 2); }
        public bool HT_SPA { get => ((HyperTrainFlags >> 3) & 1) == 1; set => HyperTrainFlags = (HyperTrainFlags & ~(1 << 3)) | ((value ? 1 : 0) << 3); }
        public bool HT_SPD { get => ((HyperTrainFlags >> 4) & 1) == 1; set => HyperTrainFlags = (HyperTrainFlags & ~(1 << 4)) | ((value ? 1 : 0) << 4); }
        public bool HT_SPE { get => ((HyperTrainFlags >> 5) & 1) == 1; set => HyperTrainFlags = (HyperTrainFlags & ~(1 << 5)) | ((value ? 1 : 0) << 5); }

        public bool GetMoveRecordFlag(int index)
        {
            if ((uint)index > 112) // 14 bytes, 8 bits
                throw new ArgumentOutOfRangeException(nameof(index));
            int ofs = index >> 3;
            return FlagUtil.GetFlag(Data, 0x127 + ofs, index & 7);
        }

        public void SetMoveRecordFlag(int index, bool value)
        {
            if ((uint)index > 112) // 14 bytes, 8 bits
                throw new ArgumentOutOfRangeException(nameof(index));
            int ofs = index >> 3;
            FlagUtil.SetFlag(Data, 0x127 + ofs, index & 7, value);
        }

        public bool HasAnyMoveRecordFlag() => Array.FindIndex(Data, 0x127, 14, z => z != 0) >= 0;

        // 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[] Markings
        {
            get
            {
                int[] marks = new int[8];
                int val = MarkValue;
                for (int i = 0; i < marks.Length; i++)
                    marks[i] = ((val >> (i * 2)) & 3) % 3;
                return marks;
            }
            set => SetMarkings(value);
        }

        public override void SetMarkings(ReadOnlySpan<int> value)
        {
            if (value.Length > 8)
                return;
            int v = 0;
            for (int i = 0; i < value.Length; i++)
                v |= (value[i] % 3) << (i * 2);
            MarkValue = v;
        }

        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);
        }
    }
}