using System;
using UnityEngine;

public class TilesetWithCircle : MonoBehaviour
{
    public OnlineMaps map;
    public float radiusMeters = 100;
    public Color circleColor = Color.red;
    public float circleBorderWidth = 1;
    public Color circleBorderColor = Color.black;
    
    private OnlineMapsTileSetControl control;
    
    private void Start()
    {
        if (map == null) map = OnlineMaps.instance;
        control = map.control as OnlineMapsTileSetControl;
        if (control == null) throw new Exception("You must use the Tileset control.");
        
        map.OnMapUpdated += OnMapUpdated;
        map.control.OnMapClick += () =>
        {
            map.markerManager.Create(map.control.GetCoords());
            map.Redraw();
        };
    }

    private void OnMapUpdated()
    {
        double lng, lat;

        OnlineMapsMarkerManager markerManager = map.markerManager;
        
        Vector4[] items = new Vector4[1000];

        int countItems = Mathf.Min(markerManager.Count, 1000);
        for (int i = 0; i < countItems; i++)
        {
            OnlineMapsMarker marker = markerManager[i];
            marker.GetPosition(out lng, out lat);
            Vector3 position = control.GetWorldPosition(lng, lat);
            
            OnlineMapsUtils.GetCoordinateInDistance(lng, lat, radiusMeters / 1000, 90, out lng, out lat);
            Vector3 position2 = control.GetWorldPosition(lng, lat);

            Vector4 v = position;
            v.w = Mathf.Abs((position - position2).x);
            
            items[i] = v;
        }
        
        Shader.SetGlobalVectorArray("_Items", items);
        Shader.SetGlobalInt("_CountItems", countItems);
        Shader.SetGlobalColor("_CircleColor", circleColor);
        Shader.SetGlobalFloat("_CircleBorderWidth", circleBorderWidth);
        Shader.SetGlobalColor("_CircleBorderColor", circleBorderColor);
    }
}