using Godot;

namespace Babushka.scripts.CSharp.Common;

public partial class Player3D : CharacterBody3D
{
    [Export] private float _speed = 1.0f;
    [Export] private Camera3D _camera;
    [Export] private Sprite3D _frontSprite;
    [Export] private Sprite3D _sideSprite;
    
    private bool _sideFlipped;

    public override void _PhysicsProcess(double delta)
    {
	    if (!IsOnFloor()) Velocity += Vector3.Down * (float) delta;
	    
	    var inputDir = Input.GetVector("move_left", "move_right", "move_up", "move_down");
	    if (inputDir == Vector2.Zero)
		    return; 
		
	    MoveOnInput(inputDir, delta);
	    SwitchSprites(inputDir);
    }

    private void MoveOnInput(Vector2 inputDir, double delta)
    {
	    inputDir = inputDir.Rotated(-_camera.GlobalRotation.Y);
	    var direction = (Transform.Basis * new Vector3(inputDir.X, 0, inputDir.Y)).Normalized();
	    if (direction != Vector3.Zero)
		    Velocity = new Vector3(direction.X * _speed * (float) delta * Scale.X, Velocity.Y, direction.Z * _speed * (float) delta * Scale.Z);
	    else
		    Velocity = Velocity.MoveToward(new Vector3(0, 0, 0),  _speed);

	    MoveAndSlide();
    }

    private void SwitchSprites(Vector2 inputDir)
    {
	    float X = inputDir.X;
	    float Y = inputDir.Y;
	    
	    if (X == 0.0 && Y == 0.0)
	    {
		    ActivateFrontSprite(true);
		    return;
	    }

	    if (X != 0)
	    {
		    ActivateFrontSprite(false);
		    
		    if (X > 0.0f)
		    {
			    _sideFlipped = false;
			    _sideSprite.FlipH = _sideFlipped;
		    }

		    if (X < 0.0f)
		    {
			    _sideFlipped = true;
			    _sideSprite.FlipH = _sideFlipped;
		    }
		    return;
	    }

	    if (Y != 0)
	    {
		    ActivateFrontSprite(true);
	    }

    }

    private void ActivateFrontSprite(bool activate)
    {
	    _frontSprite.Visible = activate;
	    _sideSprite.Visible = !activate;
    }
    
    
}