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);
    }
}