using System;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

public class LineDrawingPath_A : MonoBehaviour
{
    public GameObject MarkerLineA;
    private OnlineMapsMarker3D marker3D_Line;
    public LineRenderer lineRenderer;
    private List<LineTerrainMarker> markers = new List<LineTerrainMarker>();
    private List<Vector3> linePoints = new List<Vector3>();

    void Start()
    {
        LineTerrainMarker.OnMarkerPositionChanged += UpdateLineRenderer;        
        if (lineRenderer == null)
        {
            Debug.LogError("NO LineRenderer");
        }
    }

    void UpdateLineRenderer(LineTerrainMarker marker)
    {
        if (!markers.Contains(marker))
        {
            markers.Add(marker);
        }

        lineRenderer.positionCount = markers.Count;

        for (int i = 0; i < markers.Count; i++)
        {
            lineRenderer.SetPosition(i, markers[i].MarkerPosition);
        }
    }

    void Update()
    {        
        UpdateRender();        
        Debug.Log("Lista - Punti: " + string.Join(", ", linePoints.Select(p => p.ToString()).ToArray()));
    }

    void UpdateRender()
    {        
        if (linePoints.Count > lineRenderer.positionCount)
        {            
            lineRenderer.positionCount = linePoints.Count;

            for (int i = 0; i < linePoints.Count; i++)
            {
                Debug.Log($"Points {i}: {linePoints[i]}");
                lineRenderer.SetPosition(i, linePoints[i]);
            }
        }
    }

    public void AddMarkerLine()
    {
        Vector2 markerPosition = OnlineMaps.instance.position;

        // Create 3D marker
        marker3D_Line = OnlineMapsMarker3DManager.CreateItem(markerPosition, MarkerLineA);
        marker3D_Line.label = "Marker Line";
        marker3D_Line.tags.Add("marker3D_Line");
        marker3D_Line.enabled = true;       
        GameObject markerGameObject = marker3D_Line.instance;        
        LineTerrainMarker TrLineScript = markerGameObject.AddComponent<LineTerrainMarker>();        
        linePoints.Add(TrLineScript.MarkerPosition);
    }
    
    public class LineTerrainMarker : MonoBehaviour
    {
        public static event Action<LineTerrainMarker> OnMarkerPositionChanged;
        private Vector3 markerPosition;

        public Vector3 MarkerPosition
        {
            get { return markerPosition; }
            set
            {
                if (markerPosition != value)
                {
                    markerPosition = value;
                    OnMarkerPositionChanged?.Invoke(this);
                }
            }
        }

        void Update()
        {
            MarkerPosition = transform.position;
        }
    }

}