using AcDream.Core.Items;

namespace AcDream.Core.Net;

/// <summary>
/// Wires WorldSession GameMessage-level object events into the client object
/// table: CreateObject (0xF745) = canonical merge-upsert, DeleteObject (0xF747)
/// = evict, PublicUpdatePropertyInt (0x02CE) UiEffects = live icon re-composite.
/// Keeps object ingestion in Core.Net (pure data, no GL) and off GameWindow.
/// Retail: ACCObjectMaint::CreateObject / DeleteObject (the weenie_object_table side).
/// </summary>
public static class ObjectTableWiring
{
    /// <summary>
    /// Subscribe <paramref name="table"/> to the three object-lifecycle events
    /// on <paramref name="session"/>. Call this BEFORE the render handler subscribes
    /// to EntitySpawned so the table is populated before the render path runs.
    /// </summary>
    public static void Wire(WorldSession session, ClientObjectTable table)
    {
        ArgumentNullException.ThrowIfNull(session);
        ArgumentNullException.ThrowIfNull(table);

        session.EntitySpawned += s => table.Ingest(ToWeenieData(s));
        session.EntityDeleted += d => table.Remove(d.Guid);
        session.ObjectIntPropertyUpdated += u =>
        {
            if (u.Property == ClientObjectTable.UiEffectsPropertyId)
                table.UpdateIntProperty(u.Guid, u.Property, u.Value);
        };
    }

    /// <summary>Translate the wire spawn into the table's merge patch.</summary>
    public static WeenieData ToWeenieData(WorldSession.EntitySpawn s) => new(
        Guid: s.Guid,
        Name: s.Name,
        Type: s.ItemType is { } it ? (ItemType)it : (ItemType?)null,
        WeenieClassId: s.WeenieClassId,
        IconId: s.IconId,
        IconOverlayId: s.IconOverlayId,
        IconUnderlayId: s.IconUnderlayId,
        Effects: s.UiEffects,
        Value: s.Value,
        StackSize: s.StackSize,
        StackSizeMax: s.StackSizeMax,
        Burden: s.Burden,
        ContainerId: s.ContainerId,
        WielderId: s.WielderId,
        ValidLocations: s.ValidLocations,
        CurrentWieldedLocation: s.CurrentWieldedLocation,
        Priority: s.Priority,
        ItemsCapacity: s.ItemsCapacity,
        ContainersCapacity: s.ContainersCapacity,
        Structure: s.Structure,
        MaxStructure: s.MaxStructure,
        Workmanship: s.Workmanship);
}