using System.Numerics;
using Content.Shared.Hands.EntitySystems;
using Content.Shared.Interaction;
using Content.Shared.Storage.Components;

namespace Content.Shared.Placeable;

public sealed class PlaceableSurfaceSystem : EntitySystem
{
    [Dependency] private readonly SharedHandsSystem _handsSystem = default!;

    public override void Initialize()
    {
        base.Initialize();

        SubscribeLocalEvent<PlaceableSurfaceComponent, AfterInteractUsingEvent>(OnAfterInteractUsing);
    }

    public void SetPlaceable(EntityUid uid, bool isPlaceable, PlaceableSurfaceComponent? surface = null)
    {
        if (!Resolve(uid, ref surface, false))
            return;

        surface.IsPlaceable = isPlaceable;
        Dirty(uid, surface);
    }

    public void SetPlaceCentered(EntityUid uid, bool placeCentered, PlaceableSurfaceComponent? surface = null)
    {
        if (!Resolve(uid, ref surface))
            return;

        surface.PlaceCentered = placeCentered;
        Dirty(uid, surface);
    }

    public void SetPositionOffset(EntityUid uid, Vector2 offset, PlaceableSurfaceComponent? surface = null)
    {
        if (!Resolve(uid, ref surface))
            return;

        surface.PositionOffset = offset;
        Dirty(uid, surface);
    }

    private void OnAfterInteractUsing(EntityUid uid, PlaceableSurfaceComponent surface, AfterInteractUsingEvent args)
    {
        if (args.Handled || !args.CanReach)
            return;

        if (!surface.IsPlaceable)
            return;

        // 99% of the time they want to dump the stuff inside on the table, they can manually place with q if they really need to.
        // Just causes prediction CBT otherwise.
        if (HasComp<DumpableComponent>(args.Used))
            return;

        if (!_handsSystem.TryDrop(args.User, args.Used))
            return;

        if (surface.PlaceCentered)
            Transform(args.Used).LocalPosition = Transform(uid).LocalPosition + surface.PositionOffset;
        else
            Transform(args.Used).Coordinates = args.ClickLocation;

        args.Handled = true;
    }
}