using Godot;
using System;
using System.Diagnostics;
using Cirno.Scripts;

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 PackedScene SelectorScene { get; set; }

	private Node2D _selector;

	private Interactable _lastInteractable;

	[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>("./Smoothing2D/Crosshair");

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

		if (SelectorScene != null)
		{
			_selector = this.CreateChild<Node2D>(SelectorScene);
			_selector.Visible = false;
		}
	}

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

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

	private void FindInteractable()
	{
		if (Input.IsActionJustPressed("Use") && _lastInteractable != null)
		{
			_lastInteractable.Activate();
		}
		
		//var spaceState = GetWorld2D().DirectSpaceState;
		
		//var query = PhysicsRayQueryParameters2D.Create(Vector2.Zero, )
	}

	private void HandleShoot()
	{
		if (!Input.IsActionJustPressed("shoot")) return;
		//Debug.WriteLine("Shoot");
		var 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();

		//FindInteractable();
		
	}
	
	private void _on_interaction_controller_area_entered(Area2D area)
	{
		// Replace with function body.
		if (area.IsInGroup("Interactable") && area is Interactable interactable)
		{
			Debug.WriteLine("Interactable Entered");

			if (_selector != null)
			{
				_selector.Position = interactable.Position;
				_selector.Visible = true;
				_lastInteractable = interactable;
			}
		}
	}
}