package de.intevation.flys.client.server.auth.was;

import java.io.IOException;
import java.security.GeneralSecurityException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;

import de.intevation.flys.client.server.GGInATrustStrategy;
import de.intevation.flys.client.server.auth.Authentication;
import de.intevation.flys.client.server.auth.AuthenticationException;

public class Authenticator implements de.intevation.flys.client.server.auth.Authenticator {

    public Authentication auth(String username, String password, String encoding)
        throws AuthenticationException, IOException {
            try {
                SSLSocketFactory sf = new SSLSocketFactory(
                        new GGInATrustStrategy());
                Scheme https = new Scheme("https", 443, sf);
                HttpClient httpclient = new DefaultHttpClient();
                httpclient.getConnectionManager().getSchemeRegistry().register(https);

                Request httpget = new Request("https://geoportal.bafg.de/" +
                        "administration/WAS", username, password, encoding);
                HttpResponse response = httpclient.execute(httpget);
                HttpEntity entity = response.getEntity();
                if (entity == null) {
                    //FIXME throw AuthenticationException
                    return null;
                }
                else {
                    return new Response(entity, username, password);
                }
            }
            catch(GeneralSecurityException e) {
                throw new AuthenticationException(e);
            }
    }
}