using Godot;
using System;
using System.Diagnostics;

public partial class PlayerMovement : CharacterBody2D
{
	[Export]
	public int Speed { get; set; } = 400;

	[Export]
	public float CrosshairDistance { get; set; } = 10f;

	[Export]
	public PackedScene BulletScene { get; set; }

	[Export]
	public Marker2D Muzzle { get; set; }

	private AnimatedSprite2D _animatedSprite;

	private Vector2 _movementDirection { get; set; }
	
	private Vector2 _facingDirection { get; set; }

	private Sprite2D _crosshair;

	public override void _Ready()
	{
		_animatedSprite = GetNode<AnimatedSprite2D>("./Smoothing2D/AnimatedSprite2D");
		_crosshair = GetNode<Sprite2D>("./Crosshair");

		_movementDirection = Vector2.Zero;
		_facingDirection = Vector2.Zero;
	}

	/*public override _Process(float _delta)
	{
		if (Input.IsActionPressed("ui_right"))
		{
			_animatedSprite.Play("run");
		}
		else
		{
			_animatedSprite.Stop();
		}
	}*/

	public override void _Process(double delta)
	{
		HandleShoot();
		SetAnimation();
	}

	private void HandleShoot()
	{
		if (Input.IsActionJustPressed("shoot"))
		{
			Debug.WriteLine("Shoot");
			Bullet bullet = BulletScene.Instantiate<Bullet>();
			Owner.AddChild(bullet);
			bullet.Transform = Muzzle.GlobalTransform;
			bullet.Position = this.Position;
			bullet.SetDirection(this._facingDirection);

		}
	}

	private void SetAnimation()
	{

		if (Velocity.X == 0 && Velocity.Y == 0)
		{
			_animatedSprite.SpeedScale = 0;
		}
		else
		{
			_animatedSprite.SpeedScale = 1;
		}

		if (Velocity.X > 0)
		{
			_animatedSprite.Play("walk_right");
		}
		else if (Velocity.X < 0)
		{
			_animatedSprite.Play("walk_left");
		}
		else if (Velocity.Y > 0)
		{
			_animatedSprite.Play("walk_down");
		}
		else if (Velocity.Y < 0)
		{
			_animatedSprite.Play("walk_up");
		}


	}

	public Vector2 GetInput()
	{
		return Input.GetVector("left", "right", "up", "down");
	}

	private Vector2 CalculateCrosshairPosition()
	{

		return _facingDirection * CrosshairDistance;// + this.Position;

		//var angle = Mathf.Atan2(this.Position.X, this.Position.Y);


		//var cPos = new Vector2(this.Position.X + CrosshairDistance * Godot.Mathf.Cos(angle), this.Position.Y + CrosshairDistance * Godot.Mathf.Sin(angle));


	}

	public override void _PhysicsProcess(double delta)
	{		
		_movementDirection = GetInput();
		if (_movementDirection != Vector2.Zero) {
			_facingDirection = _movementDirection;
		}
		Velocity = _movementDirection * (float)(Speed * delta);

		MoveAndSlide();

		_crosshair.Position = CalculateCrosshairPosition();

	}
}