using Content.Server.Hands.Components;
using Content.Shared.Standing;
using Robust.Shared.GameObjects;
using Robust.Shared.IoC;
using Robust.Shared.Maths;
using Robust.Shared.Random;

namespace Content.Server.Standing;

public class StandingStateSystem : EntitySystem
{
    [Dependency] private readonly IRobustRandom _random = default!;

    private void FallOver(EntityUid uid, StandingStateComponent component, DropHandItemsEvent args)
    {
        var direction = EntityManager.TryGetComponent(uid, out PhysicsComponent? comp) ? comp.LinearVelocity / 50 : Vector2.Zero;
        var dropAngle = _random.NextFloat(0.8f, 1.2f);

        if (!EntityManager.TryGetComponent(uid, out HandsComponent? hands))
            return;

        foreach (var heldItem in hands.GetAllHeldItems())
        {
            if (!hands.Drop(heldItem.Owner))
                continue;

            var worldRotation = EntityManager.GetComponent<TransformComponent>(uid).WorldRotation.ToVec();
            Throwing.ThrowHelper.TryThrow(heldItem.Owner,
                _random.NextAngle().RotateVec(direction / dropAngle + worldRotation / 50),
                0.5f * dropAngle * _random.NextFloat(-0.9f, 1.1f),
                uid, 0);
        }
    }

    public override void Initialize()
    {
        base.Initialize();
        SubscribeLocalEvent<StandingStateComponent, DropHandItemsEvent>(FallOver);
    }

}