using Godot;

namespace GodotspaceShooter.Scripts;

[GlobalClass]
public partial class Asteroid : Node3D {
    [Export] private CollisionShape3D asteroidCollisionShape;
    [Export] private MeshInstance3D asteroidMesh;
    [Export] public RigidBody3D AsteroidRb;
    [Export] private PackedScene explosion;
    [Export] private GpuParticlesCollisionSphere3D particleCollision;
    private Vector3 rotation;
    private float rotSpeed = 100f;
    private float size;

    private float speed;

    public override void _EnterTree() {
        Position = new((float)GD.RandRange(-4f, 4f), 0, -6.4f);

        size = (float)GD.RandRange(0.25f, 0.75f);
        Vector3 scale = new(size, size, size);
        asteroidMesh.Scale = scale;
        AsteroidRb.Scale = scale;
        asteroidCollisionShape.Scale = scale;

        speed = GD.Randf() * GameManager.Instance.Level * 0.1f + 1f;
        rotation = new((float)GD.RandRange(-rotSpeed, rotSpeed), (float)GD.RandRange(-rotSpeed, rotSpeed), (float)GD.RandRange(-rotSpeed, rotSpeed));
    }

    public override void _Ready() { }

    public override void _PhysicsProcess(double delta) {
        AsteroidRb.Rotate(rotation.Normalized(), (float)delta);

        if (GameManager.Instance.GameOver) return; 
        KinematicCollision3D collision = AsteroidRb.MoveAndCollide(new(0, 0, speed * (float)delta));
        if (collision?.GetCollider() is Node3D collider) {
            Node3D parent = collider.GetParent<Node3D>();
            Vector3 collisionPosition = collision.GetPosition();
            switch (parent) {
                // case Asteroid collidedAsteroid:
                //     // collidedAsteroid.Explode(collisionPosition);
                //     // Explode(collisionPosition);
                //     break;
                case PlayerShip:
                    PlayerShip.Instance.Explode(collisionPosition);
                    Explode(collisionPosition);
                    break;
                case GameArea:
                    Explode(Vector3.Zero);
                    break;
                case LaserBeam laserBeam:
                    GameManager.Instance.Points += GameManager.Instance.Level;
                    laserBeam.QueueFree();
                    Explode(collisionPosition);
                    break;
                default:
                    GD.Print("Asteroid collided with unknown.");
                    break;
            }
        }
    }

    public void Explode(Vector3 exPosition) {
        if (exPosition != Vector3.Zero) {
            SoundManager.Instance.Play(SoundManager.Sound.AsteroidExplosion, exPosition);
            if (explosion?.Instantiate() is GpuParticles3D ex) {
                GetParent().AddChild(ex);
                ex.Position = exPosition;
                ex.Emitting = true;
            }
        }

        GameManager.Instance.AsteroidNumber--;
        QueueFree();
    }
}