using Encompass;
using PongFE.Components;
using PongFE.Messages;

namespace PongFE.Engines
{
    [Reads(
        typeof(SpawnBallAfterDestroyComponent),
        typeof(IncreaseScoreAfterDestroyComponent)
    )]
    [Receives(typeof(DestroyMessage))]
    [Sends(
        typeof(BallSpawnMessage),
        typeof(ScoreMessage)
    )]
    public class DestroyEngine : Engine
    {
        public override void Update(double dt)
        {
            foreach (ref readonly var message in ReadMessages<DestroyMessage>())
            {
                if (HasComponent<SpawnBallAfterDestroyComponent>(message.Entity))
                {
                    ref readonly var respawnComponent = ref GetComponent<SpawnBallAfterDestroyComponent>(message.Entity);

                    SendMessage(
                        new BallSpawnMessage(
                            new MoonTools.Structs.Position2D(640, 360),
                            respawnComponent.Speed,
                            16,
                            16
                        ),
                        respawnComponent.Seconds
                    );
                }

                if (HasComponent<IncreaseScoreAfterDestroyComponent>(message.Entity))
                {
                    SendMessage(new ScoreMessage(message.DestroyedBy));
                }

                Destroy(message.Entity);
            }
        }
    }
}