using System;
using System.Threading.Tasks;
using Godot;

namespace NodeWar.scripts.components;

public partial class HealthComponent : ProgressBar
{
	private float _health = 100;

	[Export]
	public Sprite2D Gfx { get; set; }

	[Export]
	public float Health
	{
		get => _health;
		set
		{
			if (value >= MaxHealth)
			{
				_health = MaxHealth;
			}
			
			_health = value;
		}
	}

	[Export]
	public float MaxHealth { get; set; } = 100;

	[Signal]
	public delegate float HealthChangedEventHandler(float oldHealth, float newHealth);

	public void TakeDamage(float damage)
	{
		Health -= damage;
		EmitSignal(SignalName.HealthChanged, Health + damage, Health);

		if (Health <= 0)
		{
			Die();
			return;
		}

		if (Gfx != null)
		{
			var originalColor = Gfx.Modulate;

			Gfx.Modulate = new Color(10, 10, 10);

			GetTree().CreateTimer(0.1f).Timeout += () =>
			{
				Gfx.Modulate = originalColor;
			};
		}
	}

	public void Die()
	{
		GD.Print("I am dying!");
		GetParent().QueueFree();
	}

	public override void _Ready()
	{
		Value = Health;
		MaxValue = MaxHealth;
	}

	public override void _Process(double delta)
	{
		Visible = Math.Abs(Health - MaxHealth) > 0.001f;
		
		Value = Health;
	}
}