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

namespace PKHeX.Core;

public sealed class SAV7SM : SAV7, ISaveBlock7SM
{
    public SAV7SM(byte[] data) : base(data, SaveBlockAccessor7SM.BlockMetadataOffset)
    {
        Blocks = new SaveBlockAccessor7SM(this);
        Initialize();
        ClearMemeCrypto();
    }

    public SAV7SM() : base(SaveUtil.SIZE_G7SM, SaveBlockAccessor7SM.BlockMetadataOffset)
    {
        Blocks = new SaveBlockAccessor7SM(this);
        Initialize();
        ClearBoxes();
    }

    private void Initialize()
    {
        Party = Blocks.BlockInfo[04].Offset;
        PokeDex = Blocks.BlockInfo[06].Offset;

        TeamSlots = Blocks.BoxLayout.TeamSlots;
        Box = Blocks.BlockInfo[14].Offset;
        WondercardData = Blocks.MysteryGift.Offset;
        DaycareOffset = Blocks.Daycare.Offset;

        ReloadBattleTeams();
    }

    public override PersonalTable7 Personal => PersonalTable.SM;
    public override ReadOnlySpan<ushort> HeldItems => Legal.HeldItems_SM;
    protected override SAV7SM CloneInternal() => new((byte[])Data.Clone());

    #region Blocks
    public SaveBlockAccessor7SM Blocks { get; }
    public override IReadOnlyList<BlockInfo> AllBlocks => Blocks.BlockInfo;
    public override MyItem Items => Blocks.Items;
    public override MysteryBlock7 MysteryGift => Blocks.MysteryGift;
    public override PokeFinder7 PokeFinder => Blocks.PokeFinder;
    public override JoinFesta7 Festa => Blocks.Festa;
    public override Daycare7 Daycare => Blocks.Daycare;
    public override RecordBlock6 Records => Blocks.Records;
    public override PlayTime6 Played => Blocks.Played;
    public override MyStatus7 MyStatus => Blocks.MyStatus;
    public override FieldMoveModelSave7 Overworld => Blocks.Overworld;
    public override Situation7 Situation => Blocks.Situation;
    public override ConfigSave7 Config => Blocks.Config;
    public override GameTime7 GameTime => Blocks.GameTime;
    public override Misc7 Misc => Blocks.Misc;
    public override Zukan7 Zukan => Blocks.Zukan;
    public override BoxLayout7 BoxLayout => Blocks.BoxLayout;
    public override BattleTree7 BattleTree => Blocks.BattleTree;
    public override ResortSave7 ResortSave => Blocks.ResortSave;
    public override FieldMenu7 FieldMenu => Blocks.FieldMenu;
    public override FashionBlock7 Fashion => Blocks.Fashion;
    public override HallOfFame7 Fame => Blocks.Fame;
    #endregion

    public override int EventFlagCount => 4000;
    public override ushort MaxMoveID => Legal.MaxMoveID_7;
    public override ushort MaxSpeciesID => Legal.MaxSpeciesID_7;
    public override int MaxItemID => Legal.MaxItemID_7;
    public override int MaxAbilityID => Legal.MaxAbilityID_7;

    private const ulong MagearnaConst = 0xCBE05F18356504AC;

    public void UpdateMagearnaConstant()
    {
        var flag = GetEventFlag(3100);
        ulong value = flag ? MagearnaConst : 0ul;
        WriteUInt64LittleEndian(Data.AsSpan(Blocks.BlockInfo[35].Offset + 0x168), value);
    }
}