using UnityEngine;
using DG.Tweening;

public class LineSegment : MonoBehaviour
{
    public Vector3 StartPoint { get; private set; }
    public Vector3 EndPoint { get; private set; }
    public Transform start;
    public Transform end;

    private LineRenderer lineRenderer;
    private BoxCollider2D boxCollider;

    private void Awake()
    {
        lineRenderer = GetComponent<LineRenderer>();
        boxCollider = GetComponent<BoxCollider2D>();
    }

    private void Start()
    {
        if (start != null && end != null)
        {
        Initialize(start.position, end.position);
        }
    }

    public void Initialize(Vector3 startPoint, Vector3 endPoint)
{
    StartPoint = startPoint;
    EndPoint = endPoint;

    lineRenderer.positionCount = 2;
    lineRenderer.SetPosition(0, StartPoint);
    lineRenderer.SetPosition(1, EndPoint);

    // Calculate the length of the line segment
    float length = Vector3.Distance(StartPoint, EndPoint);

    // Calculate the direction of the line segment
    Vector3 direction = (EndPoint - StartPoint).normalized;

    // Set the size of the BoxCollider2D
    boxCollider.size = new Vector2(length, 0.6f); // Change 0.1f to the desired thickness of the line

    // Set the center of the BoxCollider2D
    boxCollider.offset = new Vector2(length / 2, 0);

    // Rotate the BoxCollider2D to align with the line segment
    float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;
    boxCollider.transform.rotation = Quaternion.Euler(0, 0, angle);

    // Set the position of the BoxCollider2D to the start point
    boxCollider.transform.position = StartPoint;
}


public void ShrinkAndDisappear()
{
    // Shrink the line segment from the end to the start
    DOTween.To(() => EndPoint, x => EndPoint = x, StartPoint, 1f)
        .OnUpdate(() => {
            lineRenderer.SetPosition(0, StartPoint);
            lineRenderer.SetPosition(1, EndPoint);
            // Update the BoxCollider2D
            float length = Vector3.Distance(StartPoint, EndPoint);
            Vector3 direction = (EndPoint - StartPoint).normalized;
            boxCollider.size = new Vector2(length, 0.6f); // Change 0.1f to the desired thickness of the line
            boxCollider.offset = new Vector2(length / 2, 0);
            float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;
            boxCollider.transform.rotation = Quaternion.Euler(0, 0, angle);
        })
        .OnComplete(() => Destroy(gameObject));
}

}