LoginManager.java

package com.airlocksoftware.hackernews.data;

import org.apache.commons.lang3.StringUtils;
import org.jsoup.Connection.Method;
import org.jsoup.Connection.Response;

public class LoginManager {

	private static final String LOGIN_URL_EXTENSION = "/login?go_to=news";

	/**
	 * Attempts to log the user into http://news.ycombinator.com. If successful, returns a user authentication cookie.
	 * Else it returns null.
	 */
	public static String login(String username, String password) {
		try {
//			Response loginResponse = ConnectionManager.anonConnect(LOGIN_URL_EXTENSION)
//					.method(Method.GET)
//					.execute();
//			Document loginPage = loginResponse.parse();
//			String fnid = loginPage.select("input[name=fnid]")
//					.attr("value");

			Response response = ConnectionManager.anonConnect("/login")
					.data("go_to", "news")
					.data("acct", username)
					.data("pw", password)
					.header("Origin", ConnectionManager.BASE_URL)
					.followRedirects(true)
					.referrer(ConnectionManager.BASE_URL + LOGIN_URL_EXTENSION)
					.method(Method.POST)
					.execute();

			String cookie = response.cookie("user");
			if (StringUtils.isNotBlank(cookie)) {
				return cookie;
			}
		} catch (Exception e) {
			// connection error
		}
		return null;
	}
}