using System.Collections.Generic;
using UnityEngine;

public class GoogleStyledSatelliteExample:MonoBehaviour
{
    private List<TileRequest> requests;

    private void Start()
    {
        requests = new List<TileRequest>();
        OnlineMaps.instance.OnStartDownloadTile += OnStartDownloadTile;
    }

    private void Update()
    {
        foreach (TileRequest request in requests)
        {
            if (request.www.isDone)
            {
                if (string.IsNullOrEmpty(request.www.error) && request.tile.status != OnlineMapsTileStatus.disposed)
                {
                    Texture2D texture = new Texture2D(256, 256, TextureFormat.ARGB32, false);
                    texture.LoadImage(request.www.bytes);
                    texture.wrapMode = TextureWrapMode.Clamp;
                    request.tile.overlayBackTexture = texture;
                }

                request.Dispose();
            }
        }

        requests.RemoveAll(r => r.tile == null);
    }

    private void OnStartDownloadTile(OnlineMapsTile tile)
    {
        TileRequest request = new TileRequest(tile);
        requests.Add(request);
        OnlineMaps.instance.StartDownloadTile(tile);
    }

    internal class TileRequest
    {
        public OnlineMapsWWW www;
        public OnlineMapsTile tile;

        public TileRequest(OnlineMapsTile tile)
        {
            string url = string.Format("http://maps.google.com/maps/vt?pb=!1m5!1m4!1i{0}!2i{1}!3i{2}!4i256!2m3!1e0!2sm!3i338006595!3m14!2sen-US!3sUS!5e18!12m1!1e50!12m3!1e37!2m1!1ssmartmaps!12m4!1e26!2m2!1sstyles!2zcC52Om9mZixzLnQ6MXxwLnY6b24scy50OjZ8cC52Om9uLHMudDo4MnxwLnY6b24!4e0&token=64463", tile.zoom, tile.x, tile.y);
            www = new OnlineMapsWWW(url);
            this.tile = tile;
        }

        public void Dispose()
        {
            www.Dispose();
            www = null;
            tile = null;
        }
    }
}