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

namespace PKHeX.Core
{
    /// <summary> Generation 5 <see cref="PKM"/> format. </summary>
    public sealed class PK5 : PKM, ISanityChecksum,
        IRibbonSetEvent3, IRibbonSetEvent4, IRibbonSetUnique3, IRibbonSetUnique4, IRibbonSetCommon3, IRibbonSetCommon4,
        IContestStats, IContestStatsMutable, IGroundTile
    {
        private static readonly ushort[] Unused =
        {
            0x43, 0x44, 0x45, 0x46, 0x47,
            0x5E, // unused
            0x63, // last 8 bits of a 32bit ribbonset
            0x64, 0x65, 0x66, 0x67, // unused 32bit ribbonset?
            0x86, // unused
            0x87, // PokeStar Fame
        };

        public override IReadOnlyList<ushort> ExtraBytes => Unused;

        public override int SIZE_PARTY => PokeCrypto.SIZE_5PARTY;
        public override int SIZE_STORED => PokeCrypto.SIZE_5STORED;
        public override EntityContext Context => EntityContext.Gen5;
        public override PersonalInfo PersonalInfo => PersonalTable.B2W2.GetFormEntry(Species, Form);

        public PK5() : base(PokeCrypto.SIZE_5PARTY) { }
        public PK5(byte[] data) : base(DecryptParty(data)) { }

        private static byte[] DecryptParty(byte[] data)
        {
            PokeCrypto.DecryptIfEncrypted45(ref data);
            Array.Resize(ref data, PokeCrypto.SIZE_5PARTY);
            return data;
        }

        public override PKM Clone() => new PK5((byte[])Data.Clone());
        public override void RefreshChecksum() => Checksum = CalculateChecksum();
        public override bool ChecksumValid => CalculateChecksum() == Checksum;
        public override bool Valid { get => Sanity == 0 && ChecksumValid; set { if (!value) return; Sanity = 0; RefreshChecksum(); } }
        private ushort CalculateChecksum() => PokeCrypto.GetCHK(Data, PokeCrypto.SIZE_4STORED);

        // Trash Bytes
        public override Span<byte> Nickname_Trash => Data.AsSpan(0x48, 22);
        public override Span<byte> OT_Trash => Data.AsSpan(0x68, 16);

        // Future Attributes
        public override uint EncryptionConstant { get => PID; set { } }
        public override int CurrentFriendship { get => OT_Friendship; set => OT_Friendship = value; }
        public override int CurrentHandler { get => 0; set { } }
        public override int AbilityNumber { get => HiddenAbility ? 4 : 1 << PIDAbility; set { } }

        // Structure
        public override uint PID { 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); }

        #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 OT_Friendship { get => Data[0x14]; set => Data[0x14] = (byte)value; }
        public override int Ability { get => Data[0x15]; set => Data[0x15] = (byte)value; }
        public override int MarkValue { get => Data[0x16]; set => Data[0x16] = (byte)value; }
        public override int Language { get => Data[0x17]; set => Data[0x17] = (byte)value; }
        public override int EV_HP { get => Data[0x18]; set => Data[0x18] = (byte)value; }
        public override int EV_ATK { get => Data[0x19]; set => Data[0x19] = (byte)value; }
        public override int EV_DEF { get => Data[0x1A]; set => Data[0x1A] = (byte)value; }
        public override int EV_SPE { get => Data[0x1B]; set => Data[0x1B] = (byte)value; }
        public override int EV_SPA { get => Data[0x1C]; set => Data[0x1C] = (byte)value; }
        public override int EV_SPD { get => Data[0x1D]; set => Data[0x1D] = (byte)value; }
        public byte CNT_Cool   { get => Data[0x1E]; set => Data[0x1E] = value; }
        public byte CNT_Beauty { get => Data[0x1F]; set => Data[0x1F] = value; }
        public byte CNT_Cute   { get => Data[0x20]; set => Data[0x20] = value; }
        public byte CNT_Smart  { get => Data[0x21]; set => Data[0x21] = value; }
        public byte CNT_Tough  { get => Data[0x22]; set => Data[0x22] = value; }
        public byte CNT_Sheen  { get => Data[0x23]; set => Data[0x23] = value; }

        private byte RIB0 { get => Data[0x24]; set => Data[0x24] = value; } // Sinnoh 1
        private byte RIB1 { get => Data[0x25]; set => Data[0x25] = value; } // Sinnoh 2
        private byte RIB2 { get => Data[0x26]; set => Data[0x26] = value; } // Unova 1
        private byte RIB3 { get => Data[0x27]; set => Data[0x27] = value; } // Unova 2
        public bool RibbonChampionSinnoh    { get => (RIB0 & (1 << 0)) == 1 << 0; set => RIB0 = (byte)((RIB0 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonAbility           { get => (RIB0 & (1 << 1)) == 1 << 1; set => RIB0 = (byte)((RIB0 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonAbilityGreat      { get => (RIB0 & (1 << 2)) == 1 << 2; set => RIB0 = (byte)((RIB0 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonAbilityDouble     { get => (RIB0 & (1 << 3)) == 1 << 3; set => RIB0 = (byte)((RIB0 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RibbonAbilityMulti      { get => (RIB0 & (1 << 4)) == 1 << 4; set => RIB0 = (byte)((RIB0 & ~(1 << 4)) | (value ? 1 << 4 : 0)); }
        public bool RibbonAbilityPair       { get => (RIB0 & (1 << 5)) == 1 << 5; set => RIB0 = (byte)((RIB0 & ~(1 << 5)) | (value ? 1 << 5 : 0)); }
        public bool RibbonAbilityWorld      { get => (RIB0 & (1 << 6)) == 1 << 6; set => RIB0 = (byte)((RIB0 & ~(1 << 6)) | (value ? 1 << 6 : 0)); }
        public bool RibbonAlert             { get => (RIB0 & (1 << 7)) == 1 << 7; set => RIB0 = (byte)((RIB0 & ~(1 << 7)) | (value ? 1 << 7 : 0)); }
        public bool RibbonShock             { get => (RIB1 & (1 << 0)) == 1 << 0; set => RIB1 = (byte)((RIB1 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonDowncast          { get => (RIB1 & (1 << 1)) == 1 << 1; set => RIB1 = (byte)((RIB1 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonCareless          { get => (RIB1 & (1 << 2)) == 1 << 2; set => RIB1 = (byte)((RIB1 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonRelax             { get => (RIB1 & (1 << 3)) == 1 << 3; set => RIB1 = (byte)((RIB1 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RibbonSnooze            { get => (RIB1 & (1 << 4)) == 1 << 4; set => RIB1 = (byte)((RIB1 & ~(1 << 4)) | (value ? 1 << 4 : 0)); }
        public bool RibbonSmile             { get => (RIB1 & (1 << 5)) == 1 << 5; set => RIB1 = (byte)((RIB1 & ~(1 << 5)) | (value ? 1 << 5 : 0)); }
        public bool RibbonGorgeous          { get => (RIB1 & (1 << 6)) == 1 << 6; set => RIB1 = (byte)((RIB1 & ~(1 << 6)) | (value ? 1 << 6 : 0)); }
        public bool RibbonRoyal             { get => (RIB1 & (1 << 7)) == 1 << 7; set => RIB1 = (byte)((RIB1 & ~(1 << 7)) | (value ? 1 << 7 : 0)); }
        public bool RibbonGorgeousRoyal     { get => (RIB2 & (1 << 0)) == 1 << 0; set => RIB2 = (byte)((RIB2 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonFootprint         { get => (RIB2 & (1 << 1)) == 1 << 1; set => RIB2 = (byte)((RIB2 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonRecord            { get => (RIB2 & (1 << 2)) == 1 << 2; set => RIB2 = (byte)((RIB2 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonEvent             { get => (RIB2 & (1 << 3)) == 1 << 3; set => RIB2 = (byte)((RIB2 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RibbonLegend            { get => (RIB2 & (1 << 4)) == 1 << 4; set => RIB2 = (byte)((RIB2 & ~(1 << 4)) | (value ? 1 << 4 : 0)); }
        public bool RibbonChampionWorld     { get => (RIB2 & (1 << 5)) == 1 << 5; set => RIB2 = (byte)((RIB2 & ~(1 << 5)) | (value ? 1 << 5 : 0)); }
        public bool RibbonBirthday          { get => (RIB2 & (1 << 6)) == 1 << 6; set => RIB2 = (byte)((RIB2 & ~(1 << 6)) | (value ? 1 << 6 : 0)); }
        public bool RibbonSpecial           { get => (RIB2 & (1 << 7)) == 1 << 7; set => RIB2 = (byte)((RIB2 & ~(1 << 7)) | (value ? 1 << 7 : 0)); }
        public bool RibbonSouvenir          { get => (RIB3 & (1 << 0)) == 1 << 0; set => RIB3 = (byte)((RIB3 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonWishing           { get => (RIB3 & (1 << 1)) == 1 << 1; set => RIB3 = (byte)((RIB3 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonClassic           { get => (RIB3 & (1 << 2)) == 1 << 2; set => RIB3 = (byte)((RIB3 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonPremier           { get => (RIB3 & (1 << 3)) == 1 << 3; set => RIB3 = (byte)((RIB3 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RIB3_4 { get => (RIB3 & (1 << 4)) == 1 << 4; set => RIB3 = (byte)((RIB3 & ~(1 << 4)) | (value ? 1 << 4 : 0)); } // Unused
        public bool RIB3_5 { get => (RIB3 & (1 << 5)) == 1 << 5; set => RIB3 = (byte)((RIB3 & ~(1 << 5)) | (value ? 1 << 5 : 0)); } // Unused
        public bool RIB3_6 { get => (RIB3 & (1 << 6)) == 1 << 6; set => RIB3 = (byte)((RIB3 & ~(1 << 6)) | (value ? 1 << 6 : 0)); } // Unused
        public bool RIB3_7 { get => (RIB3 & (1 << 7)) == 1 << 7; set => RIB3 = (byte)((RIB3 & ~(1 << 7)) | (value ? 1 << 7 : 0)); } // Unused
        #endregion

        #region Block B
        public override int Move1 { get => ReadUInt16LittleEndian(Data.AsSpan(0x28)); set => WriteUInt16LittleEndian(Data.AsSpan(0x28), (ushort)value); }
        public override int Move2 { get => ReadUInt16LittleEndian(Data.AsSpan(0x2A)); set => WriteUInt16LittleEndian(Data.AsSpan(0x2A), (ushort)value); }
        public override int Move3 { get => ReadUInt16LittleEndian(Data.AsSpan(0x2C)); set => WriteUInt16LittleEndian(Data.AsSpan(0x2C), (ushort)value); }
        public override int Move4 { get => ReadUInt16LittleEndian(Data.AsSpan(0x2E)); set => WriteUInt16LittleEndian(Data.AsSpan(0x2E), (ushort)value); }
        public override int Move1_PP { get => Data[0x30]; set => Data[0x30] = (byte)value; }
        public override int Move2_PP { get => Data[0x31]; set => Data[0x31] = (byte)value; }
        public override int Move3_PP { get => Data[0x32]; set => Data[0x32] = (byte)value; }
        public override int Move4_PP { get => Data[0x33]; set => Data[0x33] = (byte)value; }
        public override int Move1_PPUps { get => Data[0x34]; set => Data[0x34] = (byte)value; }
        public override int Move2_PPUps { get => Data[0x35]; set => Data[0x35] = (byte)value; }
        public override int Move3_PPUps { get => Data[0x36]; set => Data[0x36] = (byte)value; }
        public override int Move4_PPUps { get => Data[0x37]; set => Data[0x37] = (byte)value; }
        private uint IV32 { get => ReadUInt32LittleEndian(Data.AsSpan(0x38)); set => WriteUInt32LittleEndian(Data.AsSpan(0x38), 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); }

        private byte RIB4 { get => Data[0x3C]; set => Data[0x3C] = value; } // Hoenn 1a
        private byte RIB5 { get => Data[0x3D]; set => Data[0x3D] = value; } // Hoenn 1b
        private byte RIB6 { get => Data[0x3E]; set => Data[0x3E] = value; } // Hoenn 2a
        private byte RIB7 { get => Data[0x3F]; set => Data[0x3F] = value; } // Hoenn 2b
        public bool RibbonG3Cool            { get => (RIB4 & (1 << 0)) == 1 << 0; set => RIB4 = (byte)((RIB4 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonG3CoolSuper       { get => (RIB4 & (1 << 1)) == 1 << 1; set => RIB4 = (byte)((RIB4 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonG3CoolHyper       { get => (RIB4 & (1 << 2)) == 1 << 2; set => RIB4 = (byte)((RIB4 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonG3CoolMaster      { get => (RIB4 & (1 << 3)) == 1 << 3; set => RIB4 = (byte)((RIB4 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RibbonG3Beauty          { get => (RIB4 & (1 << 4)) == 1 << 4; set => RIB4 = (byte)((RIB4 & ~(1 << 4)) | (value ? 1 << 4 : 0)); }
        public bool RibbonG3BeautySuper     { get => (RIB4 & (1 << 5)) == 1 << 5; set => RIB4 = (byte)((RIB4 & ~(1 << 5)) | (value ? 1 << 5 : 0)); }
        public bool RibbonG3BeautyHyper     { get => (RIB4 & (1 << 6)) == 1 << 6; set => RIB4 = (byte)((RIB4 & ~(1 << 6)) | (value ? 1 << 6 : 0)); }
        public bool RibbonG3BeautyMaster    { get => (RIB4 & (1 << 7)) == 1 << 7; set => RIB4 = (byte)((RIB4 & ~(1 << 7)) | (value ? 1 << 7 : 0)); }
        public bool RibbonG3Cute            { get => (RIB5 & (1 << 0)) == 1 << 0; set => RIB5 = (byte)((RIB5 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonG3CuteSuper       { get => (RIB5 & (1 << 1)) == 1 << 1; set => RIB5 = (byte)((RIB5 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonG3CuteHyper       { get => (RIB5 & (1 << 2)) == 1 << 2; set => RIB5 = (byte)((RIB5 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonG3CuteMaster      { get => (RIB5 & (1 << 3)) == 1 << 3; set => RIB5 = (byte)((RIB5 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RibbonG3Smart           { get => (RIB5 & (1 << 4)) == 1 << 4; set => RIB5 = (byte)((RIB5 & ~(1 << 4)) | (value ? 1 << 4 : 0)); }
        public bool RibbonG3SmartSuper      { get => (RIB5 & (1 << 5)) == 1 << 5; set => RIB5 = (byte)((RIB5 & ~(1 << 5)) | (value ? 1 << 5 : 0)); }
        public bool RibbonG3SmartHyper      { get => (RIB5 & (1 << 6)) == 1 << 6; set => RIB5 = (byte)((RIB5 & ~(1 << 6)) | (value ? 1 << 6 : 0)); }
        public bool RibbonG3SmartMaster     { get => (RIB5 & (1 << 7)) == 1 << 7; set => RIB5 = (byte)((RIB5 & ~(1 << 7)) | (value ? 1 << 7 : 0)); }
        public bool RibbonG3Tough           { get => (RIB6 & (1 << 0)) == 1 << 0; set => RIB6 = (byte)((RIB6 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonG3ToughSuper      { get => (RIB6 & (1 << 1)) == 1 << 1; set => RIB6 = (byte)((RIB6 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonG3ToughHyper      { get => (RIB6 & (1 << 2)) == 1 << 2; set => RIB6 = (byte)((RIB6 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonG3ToughMaster     { get => (RIB6 & (1 << 3)) == 1 << 3; set => RIB6 = (byte)((RIB6 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RibbonChampionG3        { get => (RIB6 & (1 << 4)) == 1 << 4; set => RIB6 = (byte)((RIB6 & ~(1 << 4)) | (value ? 1 << 4 : 0)); }
        public bool RibbonWinning           { get => (RIB6 & (1 << 5)) == 1 << 5; set => RIB6 = (byte)((RIB6 & ~(1 << 5)) | (value ? 1 << 5 : 0)); }
        public bool RibbonVictory           { get => (RIB6 & (1 << 6)) == 1 << 6; set => RIB6 = (byte)((RIB6 & ~(1 << 6)) | (value ? 1 << 6 : 0)); }
        public bool RibbonArtist            { get => (RIB6 & (1 << 7)) == 1 << 7; set => RIB6 = (byte)((RIB6 & ~(1 << 7)) | (value ? 1 << 7 : 0)); }
        public bool RibbonEffort            { get => (RIB7 & (1 << 0)) == 1 << 0; set => RIB7 = (byte)((RIB7 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonChampionBattle    { get => (RIB7 & (1 << 1)) == 1 << 1; set => RIB7 = (byte)((RIB7 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonChampionRegional  { get => (RIB7 & (1 << 2)) == 1 << 2; set => RIB7 = (byte)((RIB7 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonChampionNational  { get => (RIB7 & (1 << 3)) == 1 << 3; set => RIB7 = (byte)((RIB7 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RibbonCountry           { get => (RIB7 & (1 << 4)) == 1 << 4; set => RIB7 = (byte)((RIB7 & ~(1 << 4)) | (value ? 1 << 4 : 0)); }
        public bool RibbonNational          { get => (RIB7 & (1 << 5)) == 1 << 5; set => RIB7 = (byte)((RIB7 & ~(1 << 5)) | (value ? 1 << 5 : 0)); }
        public bool RibbonEarth             { get => (RIB7 & (1 << 6)) == 1 << 6; set => RIB7 = (byte)((RIB7 & ~(1 << 6)) | (value ? 1 << 6 : 0)); }
        public bool RibbonWorld             { get => (RIB7 & (1 << 7)) == 1 << 7; set => RIB7 = (byte)((RIB7 & ~(1 << 7)) | (value ? 1 << 7 : 0)); }

        public override bool FatefulEncounter { get => (Data[0x40] & 1) == 1; set => Data[0x40] = (byte)((Data[0x40] & ~0x01) | (value ? 1 : 0)); }
        public override int Gender { get => (Data[0x40] >> 1) & 0x3; set => Data[0x40] = (byte)((Data[0x40] & ~0x06) | (value << 1)); }
        public override int Form { get => Data[0x40] >> 3; set => Data[0x40] = (byte)((Data[0x40] & 0x07) | (value << 3)); }
        public override int Nature { get => Data[0x41]; set => Data[0x41] = (byte)value; }
        public bool HiddenAbility { get => (Data[0x42] & 1) == 1; set => Data[0x42] = (byte)((Data[0x42] & ~0x01) | (value ? 1 : 0)); }
        public bool NPokémon { get => (Data[0x42] & 2) == 2; set => Data[0x42] = (byte)((Data[0x42] & ~0x02) | (value ? 2 : 0)); }
        // 0x43-0x47 Unused
        #endregion

        #region Block C
        public override string Nickname { get => StringConverter5.GetString(Nickname_Trash); set => StringConverter5.SetString(Nickname_Trash, value.AsSpan(), 10, StringConverterOption.None); }
        // 0x5E unused
        public override int Version { get => Data[0x5F]; set => Data[0x5F] = (byte)value; }
        private byte RIB8 { get => Data[0x60]; set => Data[0x60] = value; } // Sinnoh 3
        private byte RIB9 { get => Data[0x61]; set => Data[0x61] = value; } // Sinnoh 4
        private byte RIBA { get => Data[0x62]; set => Data[0x62] = value; } // Sinnoh 5
        private byte RIBB { get => Data[0x63]; set => Data[0x63] = value; } // Sinnoh 6
        public bool RibbonG4Cool            { get => (RIB8 & (1 << 0)) == 1 << 0; set => RIB8 = (byte)((RIB8 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonG4CoolGreat       { get => (RIB8 & (1 << 1)) == 1 << 1; set => RIB8 = (byte)((RIB8 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonG4CoolUltra       { get => (RIB8 & (1 << 2)) == 1 << 2; set => RIB8 = (byte)((RIB8 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonG4CoolMaster      { get => (RIB8 & (1 << 3)) == 1 << 3; set => RIB8 = (byte)((RIB8 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RibbonG4Beauty          { get => (RIB8 & (1 << 4)) == 1 << 4; set => RIB8 = (byte)((RIB8 & ~(1 << 4)) | (value ? 1 << 4 : 0)); }
        public bool RibbonG4BeautyGreat     { get => (RIB8 & (1 << 5)) == 1 << 5; set => RIB8 = (byte)((RIB8 & ~(1 << 5)) | (value ? 1 << 5 : 0)); }
        public bool RibbonG4BeautyUltra     { get => (RIB8 & (1 << 6)) == 1 << 6; set => RIB8 = (byte)((RIB8 & ~(1 << 6)) | (value ? 1 << 6 : 0)); }
        public bool RibbonG4BeautyMaster    { get => (RIB8 & (1 << 7)) == 1 << 7; set => RIB8 = (byte)((RIB8 & ~(1 << 7)) | (value ? 1 << 7 : 0)); }
        public bool RibbonG4Cute            { get => (RIB9 & (1 << 0)) == 1 << 0; set => RIB9 = (byte)((RIB9 & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonG4CuteGreat       { get => (RIB9 & (1 << 1)) == 1 << 1; set => RIB9 = (byte)((RIB9 & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonG4CuteUltra       { get => (RIB9 & (1 << 2)) == 1 << 2; set => RIB9 = (byte)((RIB9 & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonG4CuteMaster      { get => (RIB9 & (1 << 3)) == 1 << 3; set => RIB9 = (byte)((RIB9 & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RibbonG4Smart           { get => (RIB9 & (1 << 4)) == 1 << 4; set => RIB9 = (byte)((RIB9 & ~(1 << 4)) | (value ? 1 << 4 : 0)); }
        public bool RibbonG4SmartGreat      { get => (RIB9 & (1 << 5)) == 1 << 5; set => RIB9 = (byte)((RIB9 & ~(1 << 5)) | (value ? 1 << 5 : 0)); }
        public bool RibbonG4SmartUltra      { get => (RIB9 & (1 << 6)) == 1 << 6; set => RIB9 = (byte)((RIB9 & ~(1 << 6)) | (value ? 1 << 6 : 0)); }
        public bool RibbonG4SmartMaster     { get => (RIB9 & (1 << 7)) == 1 << 7; set => RIB9 = (byte)((RIB9 & ~(1 << 7)) | (value ? 1 << 7 : 0)); }
        public bool RibbonG4Tough           { get => (RIBA & (1 << 0)) == 1 << 0; set => RIBA = (byte)((RIBA & ~(1 << 0)) | (value ? 1 << 0 : 0)); }
        public bool RibbonG4ToughGreat      { get => (RIBA & (1 << 1)) == 1 << 1; set => RIBA = (byte)((RIBA & ~(1 << 1)) | (value ? 1 << 1 : 0)); }
        public bool RibbonG4ToughUltra      { get => (RIBA & (1 << 2)) == 1 << 2; set => RIBA = (byte)((RIBA & ~(1 << 2)) | (value ? 1 << 2 : 0)); }
        public bool RibbonG4ToughMaster     { get => (RIBA & (1 << 3)) == 1 << 3; set => RIBA = (byte)((RIBA & ~(1 << 3)) | (value ? 1 << 3 : 0)); }
        public bool RIBA_4 { get => (RIBA & (1 << 4)) == 1 << 4; set => RIBA = (byte)((RIBA & ~(1 << 4)) | (value ? 1 << 4 : 0)); } // Unused
        public bool RIBA_5 { get => (RIBA & (1 << 5)) == 1 << 5; set => RIBA = (byte)((RIBA & ~(1 << 5)) | (value ? 1 << 5 : 0)); } // Unused
        public bool RIBA_6 { get => (RIBA & (1 << 6)) == 1 << 6; set => RIBA = (byte)((RIBA & ~(1 << 6)) | (value ? 1 << 6 : 0)); } // Unused
        public bool RIBA_7 { get => (RIBA & (1 << 7)) == 1 << 7; set => RIBA = (byte)((RIBA & ~(1 << 7)) | (value ? 1 << 7 : 0)); } // Unused
        public bool RIBB_0 { get => (RIBB & (1 << 0)) == 1 << 0; set => RIBB = (byte)((RIBB & ~(1 << 0)) | (value ? 1 << 0 : 0)); } // Unused
        public bool RIBB_1 { get => (RIBB & (1 << 1)) == 1 << 1; set => RIBB = (byte)((RIBB & ~(1 << 1)) | (value ? 1 << 1 : 0)); } // Unused
        public bool RIBB_2 { get => (RIBB & (1 << 2)) == 1 << 2; set => RIBB = (byte)((RIBB & ~(1 << 2)) | (value ? 1 << 2 : 0)); } // Unused
        public bool RIBB_3 { get => (RIBB & (1 << 3)) == 1 << 3; set => RIBB = (byte)((RIBB & ~(1 << 3)) | (value ? 1 << 3 : 0)); } // Unused
        public bool RIBB_4 { get => (RIBB & (1 << 4)) == 1 << 4; set => RIBB = (byte)((RIBB & ~(1 << 4)) | (value ? 1 << 4 : 0)); } // Unused
        public bool RIBB_5 { get => (RIBB & (1 << 5)) == 1 << 5; set => RIBB = (byte)((RIBB & ~(1 << 5)) | (value ? 1 << 5 : 0)); } // Unused
        public bool RIBB_6 { get => (RIBB & (1 << 6)) == 1 << 6; set => RIBB = (byte)((RIBB & ~(1 << 6)) | (value ? 1 << 6 : 0)); } // Unused
        public bool RIBB_7 { get => (RIBB & (1 << 7)) == 1 << 7; set => RIBB = (byte)((RIBB & ~(1 << 7)) | (value ? 1 << 7 : 0)); } // Unused
        // 0x64-0x67 Unused
        #endregion

        #region Block D
        public override string OT_Name { get => StringConverter5.GetString(OT_Trash); set => StringConverter5.SetString(OT_Trash, value.AsSpan(), 7, StringConverterOption.None); }
        public override int Egg_Year { get => Data[0x78]; set => Data[0x78] = (byte)value; }
        public override int Egg_Month { get => Data[0x79]; set => Data[0x79] = (byte)value; }
        public override int Egg_Day { get => Data[0x7A]; set => Data[0x7A] = (byte)value; }
        public override int Met_Year { get => Data[0x7B]; set => Data[0x7B] = (byte)value; }
        public override int Met_Month { get => Data[0x7C]; set => Data[0x7C] = (byte)value; }
        public override int Met_Day { get => Data[0x7D]; set => Data[0x7D] = (byte)value; }
        public override int Egg_Location { get => ReadUInt16LittleEndian(Data.AsSpan(0x7E)); set => WriteUInt16LittleEndian(Data.AsSpan(0x7E), (ushort)value); }
        public override int Met_Location { get => ReadUInt16LittleEndian(Data.AsSpan(0x80)); set => WriteUInt16LittleEndian(Data.AsSpan(0x80), (ushort)value); }
        private byte PKRS { get => Data[0x82]; set => Data[0x82] = 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)); }
        public override int Ball { get => Data[0x83]; set => Data[0x83] = (byte)value; }
        public override int Met_Level { get => Data[0x84] & ~0x80; set => Data[0x84] = (byte)((Data[0x84] & 0x80) | value); }
        public override int OT_Gender { get => Data[0x84] >> 7; set => Data[0x84] = (byte)((Data[0x84] & ~0x80) | value << 7); }
        public GroundTileType GroundTile { get => (GroundTileType)Data[0x85]; set => Data[0x85] = (byte)value; }
        // 0x86 Unused
        public byte PokeStarFame { get => Data[0x87]; set => Data[0x87] = value; }
        public bool IsPokeStar { get => PokeStarFame > 250; set => PokeStarFame = value ? (byte)255 : (byte)0; }
        #endregion

        #region Battle Stats
        public override int Status_Condition { get => ReadInt32LittleEndian(Data.AsSpan(0x88)); set => WriteInt32LittleEndian(Data.AsSpan(0x88), value); }
        public override int Stat_Level { get => Data[0x8C]; set => Data[0x8C] = (byte)value; }
        public byte JunkByte { get => Data[0x8D]; set => Data[0x8D] = value; }
        public override int Stat_HPCurrent { get => ReadUInt16LittleEndian(Data.AsSpan(0x8E)); set => WriteUInt16LittleEndian(Data.AsSpan(0x8E), (ushort)value); }
        public override int Stat_HPMax { get => ReadUInt16LittleEndian(Data.AsSpan(0x90)); set => WriteUInt16LittleEndian(Data.AsSpan(0x90), (ushort)value); }
        public override int Stat_ATK { get => ReadUInt16LittleEndian(Data.AsSpan(0x92)); set => WriteUInt16LittleEndian(Data.AsSpan(0x92), (ushort)value); }
        public override int Stat_DEF { get => ReadUInt16LittleEndian(Data.AsSpan(0x94)); set => WriteUInt16LittleEndian(Data.AsSpan(0x94), (ushort)value); }
        public override int Stat_SPE { get => ReadUInt16LittleEndian(Data.AsSpan(0x96)); set => WriteUInt16LittleEndian(Data.AsSpan(0x96), (ushort)value); }
        public override int Stat_SPA { get => ReadUInt16LittleEndian(Data.AsSpan(0x98)); set => WriteUInt16LittleEndian(Data.AsSpan(0x98), (ushort)value); }
        public override int Stat_SPD { get => ReadUInt16LittleEndian(Data.AsSpan(0x9A)); set => WriteUInt16LittleEndian(Data.AsSpan(0x9A), (ushort)value); }

        public Span<byte> HeldMail => Data.AsSpan(0x9C, 0x38);
        public ulong JunkData { get => ReadUInt64LittleEndian(Data.AsSpan(0xD4, 8)); set => WriteUInt64LittleEndian(Data.AsSpan(0xD4, 8), value); }

        #endregion

        // Generated Attributes
        public override int PSV => (int)((PID >> 16 ^ (PID & 0xFFFF)) >> 3);
        public override int TSV => (TID ^ SID) >> 3;

        public override int Characteristic
        {
            get
            {
                int pm6 = (int)(PID % 6); // PID
                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);
            }
        }

        // Maximums
        public override int MaxMoveID => Legal.MaxMoveID_5;
        public override int MaxSpeciesID => Legal.MaxSpeciesID_5;
        public override int MaxAbilityID => Legal.MaxAbilityID_5;
        public override int MaxItemID => Legal.MaxItemID_5_B2W2;
        public override int MaxBallID => Legal.MaxBallID_5;
        public override int MaxGameID => Legal.MaxGameID_5; // B2
        public override int MaxIV => 31;
        public override int MaxEV => 255;
        public override int OTLength => 7;
        public override int NickLength => 10;

        // Methods
        protected override byte[] Encrypt()
        {
            RefreshChecksum();
            return PokeCrypto.EncryptArray45(Data);
        }

        // Synthetic Trading Logic
        public bool Trade(string SAV_Trainer, int SAV_TID, int SAV_SID, int SAV_GENDER, int Day = 1, int Month = 1, int Year = 2013)
        {
            if (IsEgg && !(SAV_Trainer == OT_Name && SAV_TID == TID && SAV_SID == SID && SAV_GENDER == OT_Gender))
            {
                SetLinkTradeEgg(Day, Month, Year, Locations.LinkTrade5);
                return true;
            }
            return false;
        }

        public override void RefreshAbility(int n)
        {
            base.RefreshAbility(n);
            HiddenAbility = n == 2;
        }

        public PK6 ConvertToPK6()
        {
            PK6 pk6 = new() // Convert away!
            {
                EncryptionConstant = PID,
                Species = Species,
                TID = TID,
                SID = SID,
                EXP = EXP,
                PID = PID,
                Ability = Ability,
                AbilityNumber = 1 << CalculateAbilityIndex(),
                Markings = Markings,
                Language = Math.Max((int)LanguageID.Japanese, Language), // Hacked or Bad IngameTrade (Japanese B/W)

                CNT_Cool = CNT_Cool,
                CNT_Beauty = CNT_Beauty,
                CNT_Cute = CNT_Cute,
                CNT_Smart = CNT_Smart,
                CNT_Tough = CNT_Tough,
                CNT_Sheen = CNT_Sheen,

                // Cap EVs
                EV_HP = Math.Min(EV_HP, 252),
                EV_ATK = Math.Min(EV_ATK, 252),
                EV_DEF = Math.Min(EV_DEF, 252),
                EV_SPA = Math.Min(EV_SPA, 252),
                EV_SPD = Math.Min(EV_SPD, 252),
                EV_SPE = Math.Min(EV_SPE, 252),

                Move1 = Move1,
                Move2 = Move2,
                Move3 = Move3,
                Move4 = Move4,

                Move1_PPUps = Move1_PPUps,
                Move2_PPUps = Move2_PPUps,
                Move3_PPUps = Move3_PPUps,
                Move4_PPUps = Move4_PPUps,

                IV_HP = IV_HP,
                IV_ATK = IV_ATK,
                IV_DEF = IV_DEF,
                IV_SPA = IV_SPA,
                IV_SPD = IV_SPD,
                IV_SPE = IV_SPE,
                IsEgg = IsEgg,
                IsNicknamed = IsNicknamed,

                FatefulEncounter = FatefulEncounter,
                Gender = Gender,
                Form = Form,
                Nature = Nature,

                Version = Version,
                OT_Name = OT_Name,

                // Dates are kept upon transfer
                MetDate = MetDate,
                EggMetDate = EggMetDate,

                // Locations are kept upon transfer
                Met_Location = Met_Location,
                Egg_Location = Egg_Location,

                PKRS_Strain = PKRS_Strain,
                PKRS_Days = PKRS_Days,
                Ball = Ball,

                // OT Gender & Encounter Level
                Met_Level = Met_Level,
                OT_Gender = OT_Gender,
                GroundTile = GroundTile,

                // Fill the Ribbon Counter Bytes
                RibbonCountMemoryContest = CountContestRibbons(),
                RibbonCountMemoryBattle = CountBattleRibbons(),

                // Copy Ribbons to their new locations.
                RibbonChampionG3 = RibbonChampionG3,
                RibbonChampionSinnoh = RibbonChampionSinnoh,
                RibbonEffort = RibbonEffort,

                RibbonAlert = RibbonAlert,
                RibbonShock = RibbonShock,
                RibbonDowncast = RibbonDowncast,
                RibbonCareless = RibbonCareless,
                RibbonRelax = RibbonRelax,
                RibbonSnooze = RibbonSnooze,
                RibbonSmile = RibbonSmile,
                RibbonGorgeous = RibbonGorgeous,

                RibbonRoyal = RibbonRoyal,
                RibbonGorgeousRoyal = RibbonGorgeousRoyal,
                RibbonArtist = RibbonArtist,
                RibbonFootprint = RibbonFootprint,
                RibbonRecord = RibbonRecord,
                RibbonLegend = RibbonLegend,
                RibbonCountry = RibbonCountry,
                RibbonNational = RibbonNational,

                RibbonEarth = RibbonEarth,
                RibbonWorld = RibbonWorld,
                RibbonClassic = RibbonClassic,
                RibbonPremier = RibbonPremier,
                RibbonEvent = RibbonEvent,
                RibbonBirthday = RibbonBirthday,
                RibbonSpecial = RibbonSpecial,
                RibbonSouvenir = RibbonSouvenir,

                RibbonWishing = RibbonWishing,
                RibbonChampionBattle = RibbonChampionBattle,
                RibbonChampionRegional = RibbonChampionRegional,
                RibbonChampionNational = RibbonChampionNational,
                RibbonChampionWorld = RibbonChampionWorld,

                // Write the Memories, Friendship, and Origin!
                CurrentHandler = 1,
                HT_Name = RecentTrainerCache.OT_Name,
                HT_Gender = RecentTrainerCache.OT_Gender,
                HT_Intensity = 1,
                HT_Memory = 4,
                HT_Feeling = MemoryContext6.GetRandomFeeling6(4, 10),
            };

            // Write Transfer Location - location is dependent on 3DS system that transfers.
            RecentTrainerCache.SetConsoleRegionData3DS(pk6);
            RecentTrainerCache.SetFirstCountryRegion(pk6);

            // Apply trash bytes for species name of current app language -- default to PKM's language if no match
            int curLang = SpeciesName.GetSpeciesNameLanguage(Species, Nickname, 5);
            if (curLang < 0)
                curLang = Language;
            pk6.Nickname = SpeciesName.GetSpeciesNameGeneration(Species, curLang, 6);
            if (IsNicknamed)
                pk6.Nickname = Nickname;

            // When transferred, friendship gets reset.
            pk6.OT_Friendship = pk6.HT_Friendship = PersonalInfo.BaseFriendship;

            // Gen6 changed the shiny correlation to have 2x the rate.
            // If the current PID would be shiny with those increased odds, fix it.
            if ((PSV ^ TSV) == 1)
                pk6.PID ^= 0x80000000;

            // HMs are not deleted 5->6, transfer away (but fix if blank spots?)
            pk6.FixMoves();

            // Fix PP
            pk6.HealPP();

            // Fix Name Strings
            StringConverter345.TransferGlyphs56(pk6.Nickname_Trash);
            StringConverter345.TransferGlyphs56(pk6.OT_Trash);

            // Fix Checksum
            pk6.RefreshChecksum();

            return pk6; // Done!
        }

        private byte CountBattleRibbons()
        {
            byte count = 0;
            if (RibbonWinning) count++;
            if (RibbonVictory) count++;
            for (int i = 1; i < 7; i++) // Sinnoh Battle Ribbons
            {
                if (((Data[0x24] >> i) & 1) == 1)
                    count++;
            }

            return count;
        }

        private byte CountContestRibbons()
        {
            byte count = 0;
            for (int i = 0; i < 8; i++) // Sinnoh 3, Hoenn 1
            {
                if ((Data[0x60] >> i & 1) == 1) count++;
                if (((Data[0x61] >> i) & 1) == 1) count++;
                if (((Data[0x3C] >> i) & 1) == 1) count++;
                if (((Data[0x3D] >> i) & 1) == 1) count++;
            }

            for (int i = 0; i < 4; i++) // Sinnoh 4, Hoenn 2
            {
                if (((Data[0x62] >> i) & 1) == 1) count++;
                if (((Data[0x3E] >> i) & 1) == 1) count++;
            }

            return count;
        }

        private int CalculateAbilityIndex()
        {
            var pi = (PersonalInfoB2W2) PersonalInfo;
            if (HiddenAbility)
                return 2;
            if (pi.Ability1 == Ability)
                return 0;
            if (pi.Ability2 == Ability)
                return 1;
            // reset ability, invalid
            var pid = PID;
            if (Gen5)
                pid >>= 16;
            return (int)(pid & 1);
        }
    }
}