using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using UnityEngine;

public class TraceTileRequest:MonoBehaviour
{
    private List<string> messages;
    private string text;

    private void Log(string message)
    {
        if (messages == null) messages = new List<string>();
        messages.Add(message);
        StringBuilder builder = new StringBuilder();
        for (int i = 0; i < messages.Count; i++)
        {
            if (i != 0) builder.Append("\n");
            builder.Append(messages[i]);
        }
        text = builder.ToString();
    }

    private void OnGUI()
    {
        if (string.IsNullOrEmpty(text)) return;
        GUILayout.Label(text);
    }

    private IEnumerator Start()
    {
        Log("Start");
        // Try download tile
        OnlineMapsTile tempTile = new OnlineMapsTile(350, 819, 11, OnlineMaps.instance, false);
        Log(tempTile.url);
        WWW www = new WWW(tempTile.url);
        yield return www;
        OnComplete(www);
    }

    private void OnComplete(WWW www)
    {
        Log("OnComplete");
        if (!string.IsNullOrEmpty(www.error))
        {
            Log("Load failed: " + www.error);
            return;
        }
        
        Log("Tile successfully loaded");

        try
        {
            // Try load tile
            Texture2D texture = new Texture2D(1, 1, TextureFormat.RGB24, false);
            www.LoadImageIntoTexture(texture);
            Log("Texture successfully loaded");
        }
        catch (Exception exception)
        {
            Log("Texture load failed: " + exception.Message);
        }
    }
}