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

public class NetworkService {
	private const string xmlApi = "http://api.openweathermap.org/data/2.5/weather?id=701824&mode=xml&APPID=ed7e09a620553dba6828003117f600ab";

	private bool IsResponseValid(WWW www) {
		if (www.error != null) {
			Debug.Log ("bad connection");
			return false;
		} else if (string.IsNullOrEmpty (www.text)) {
			Debug.Log ("bad data");
			return false;
		} else {
			return true;
		}
	}

	private IEnumerator CallAPI(string url, Action<string> callback) {
		WWW www = new WWW (url);
		yield return www;

		if (!IsResponseValid (www)) {
			yield break;
		}
		callback (www.text);
	}

	public IEnumerator GetWeatherXML(Action<string> callback) {
		return CallAPI (xmlApi, callback);
	}
}