Klout.java

package wrapper;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import argo.jdom.JdomParser;
import argo.jdom.JsonRootNode;


/**
 * This serves as a Klout Java/Android API Wrapper. All functions that can be done with the Klout API
 * can be done through this wrapper as well in a more elegant manner. 
 * 
 * @author Anish Visaria
 *
 */
public class Klout {
	

	public static final String TWITTER = "tw";
	public static final String GOOGLE_PLUS = "gp";
	public static final String INSTAGRAM = "ig";
	public static final String KLOUT = "klout";
	public static final String TWITTER_SCREEN_NAME = "screenName";
	
	private String api_key;
	private HttpURLConnection conn;
	private final String USER_AGENT = "Mozilla/5.0";
	
	
	
	/**
	 * Initializes the Klout object with the api key provided.
	 * 
	 * @param key your api key
	 */
	public Klout(String key) {
		api_key = key;
	}
	
	
	/**
	 * Retrieves the id and network of the specified type. All types return a Klout network id
	 * except when the type is Klout.
	 * 
	 * @param id social network id
	 * @param type classification of id 
	 * @return String[] with elements id and network, respectively.
	 * @throws Exception
	 */
	public String[] getIdentity(String id, String type) throws Exception {
		String content;
		if (type.equals(KLOUT))
			content = getContentBody("http://api.klout.com/v2/identity.json/"+type+"/"+id+"/tw?key="+api_key);
		else if (type.equals(TWITTER_SCREEN_NAME)) 
			content = getContentBody("http://api.klout.com/v2/identity.json/twitter?screenName="+id+"&key="+api_key);
		else
			content = getContentBody("http://api.klout.com/v2/identity.json/"+type+"/"+id+"?key="+api_key);
		
		JdomParser parser = new JdomParser();
		JsonRootNode stuff = parser.parse(content);
		
		return new String[] {stuff.getStringValue("id"), stuff.getStringValue("network")};
	}
	
	
	/**
	 * Retrieves a User object with the specified kloutId.
	 * 
	 * @param kloutId klout id of user
	 * @return User with id kloutId
	 * @throws Exception
	 */
	public User getUser(String kloutId) throws Exception {
		return new User(kloutId, api_key);
	}
	
	
	private String getContentBody(String url) throws Exception {

		URL obj = new URL(url);
		conn = (HttpURLConnection) obj.openConnection();

		// default is GET
		conn.setRequestMethod("GET");

		conn.setUseCaches(false);

		// act like a browser
		conn.setRequestProperty("User-Agent", USER_AGENT);
		conn.setRequestProperty("Accept",
				"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
		conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5");

		BufferedReader in = 
				new BufferedReader(new InputStreamReader(conn.getInputStream()));
		String inputLine;
		StringBuffer response = new StringBuffer();

		while ((inputLine = in.readLine()) != null) {
			response.append(inputLine);
		}
		in.close();

		return response.toString();

	}

}