com.handlerexploit.news.data.WeatherProvider.java Source code

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Here is the source code for com.handlerexploit.news.data.WeatherProvider.java

Source

/*
 *  Copyright (c) 2011 Daniel Huckaby
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.handlerexploit.news.data;

import java.net.URLEncoder;

import org.json.JSONException;
import org.json.JSONObject;

import com.handlerexploit.news.data.models.WeatherInfo;
import com.handlerexploit.news.utils.FileManager;

public class WeatherProvider {

    private static final String WEATHER_URL_TEMPLATE = "http://www.google.com/ig/api?weather=%s";
    private static final String BASE_YQL_QUERY = "select * from xml where url=\"%s\"";

    private static FileManager<WeatherInfo> mFileManager;

    public static void init(String cacheDirectory) {
        mFileManager = new FileManager<WeatherInfo>(cacheDirectory);
        mFileManager.setGlobalTtl(30);
    }

    public static WeatherInfo getWeather(String location) {
        WeatherInfo weatherInfo = null;
        if (mFileManager != null) {
            weatherInfo = (WeatherInfo) mFileManager.get(location);
            if (weatherInfo != null) {
                return weatherInfo;
            }
        }

        String jsonResponse = YQLHelper.query(
                String.format(BASE_YQL_QUERY, String.format(WEATHER_URL_TEMPLATE, URLEncoder.encode(location))));

        if (jsonResponse == null) {
            if (mFileManager != null) {
                weatherInfo = (WeatherInfo) mFileManager.get(location, true);
                if (weatherInfo != null) {
                    return weatherInfo;
                } else {
                    return null;
                }
            } else {
                return null;
            }
        }

        try {
            weatherInfo = new WeatherInfo(
                    new JSONObject(jsonResponse).getJSONObject("xml_api_reply").getJSONObject("weather"));
        } catch (JSONException e) {
            e.printStackTrace();
        } catch (NullPointerException e) {
            e.printStackTrace();
        }

        if (mFileManager != null && weatherInfo != null) {
            mFileManager.put(location, weatherInfo);
        }

        return weatherInfo;
    }
}