using System;
using Godot;
using Godot.Collections;

public partial class Projectile : Node2D
{
    [Export] private Array<EnemyType> _superEffective;
    [Export] private float _baseDamage;
    [Export] private float _speed;
    [Export] private Area2D _hurtBox;

    private float _ttl = 10f;
    
    public event Action<Projectile> OnDespawn;
    public Vector2 Direction;
    
    public override void _Ready()
    {
        _hurtBox.AreaEntered += AreaEntered;
        _hurtBox.BodyEntered += BodyEntered;
    }

    public override void _PhysicsProcess(double delta)
    {
        GlobalPosition += Direction * _speed * (float)delta;

        _ttl -= (float)delta;
        if (_ttl > 0f) return;
        CallDeferred(nameof(Despawn));
    }

    private void AreaEntered(Area2D area)
    {
        if (area is EnemyArea earea)
        {
            float isSe = _superEffective.Contains(earea.Enemy.Type) ? 2f : 1f;
            earea.Enemy.Health.Substract(_baseDamage * isSe);
        }

        CallDeferred(nameof(Despawn));
    }

    private void BodyEntered(Node2D node)
    {
        CallDeferred(nameof(Despawn));
    }

    private void Despawn()
    {
        OnDespawn?.Invoke(this);
    }
}