using Terraria.ModLoader;
using Terraria.ModLoader.IO;

namespace SoulHarvest.Common;

/// <summary>
/// Keeps altar progression independent from the vanilla prefix reset performed while reforging.
/// Reforging is local and synchronous, so one pending snapshot is sufficient.
/// </summary>
internal static class DeathAltarReforgePreservation
{
    private static TagCompound? pendingData;
    private static int pendingItemType;

    internal static void Capture(ModItem modItem)
    {
        TagCompound snapshot = [];
        modItem.SaveData(snapshot);
        pendingData = snapshot;
        pendingItemType = modItem.Item.type;
    }

    internal static void Restore(ModItem modItem)
    {
        if (pendingData is null || pendingItemType != modItem.Item.type)
            return;

        TagCompound snapshot = pendingData;
        pendingData = null;
        pendingItemType = 0;
        modItem.LoadData(snapshot);
    }
}