BrowserLoginActivity.java

package net.mms_projects.copy_it.activities;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

import net.mms_projects.copy_it.LoginResponse;
import net.mms_projects.copy_it.PasswordGenerator;
import net.mms_projects.copy_it.R;

import org.apache.http.Consts;
import org.apache.http.NameValuePair;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.message.BasicNameValuePair;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.NavUtils;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import com.actionbarsherlock.app.SherlockActivity;
import com.actionbarsherlock.view.MenuItem;
import com.google.analytics.tracking.android.EasyTracker;

public class BrowserLoginActivity extends SherlockActivity {

	public static String EXTRA_PROVIDER = "provider";
	public static String EXTRA_ACCESS_TOKEN = "access_token";

	protected LoginResponse response = new LoginResponse();

	private final Logger log = LoggerFactory.getLogger(this.getClass());

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_browser_login);

		// Show the Up button in the action bar.
		getSupportActionBar().setDisplayHomeAsUpEnabled(true);

		SharedPreferences preferences = PreferenceManager
				.getDefaultSharedPreferences(this);

		String baseUrl = preferences.getString("server.baseurl", this
				.getResources().getString(R.string.default_baseurl));

		WebView webview = (WebView) findViewById(R.id.webview);
		webview.setWebViewClient(new LoginWebViewClient());
		/*
		 * This makes sure that the website can use JavaScript in the browser
		 * login activity
		 */
		webview.getSettings().setJavaScriptEnabled(true);

		PasswordGenerator generator = new PasswordGenerator();
		response.devicePassword = generator.generatePassword();

		String setupUrl = "/app-setup/setup?device_password="
				+ response.devicePassword;

		if (getIntent().hasExtra(EXTRA_PROVIDER)
				&& getIntent().hasExtra(EXTRA_ACCESS_TOKEN)) {
			List<NameValuePair> values = new ArrayList<NameValuePair>();
			values.add(new BasicNameValuePair("accesstoken", getIntent()
					.getExtras().getString(EXTRA_ACCESS_TOKEN)));
			values.add(new BasicNameValuePair("returnurl", setupUrl));

			String accessTokenUrl = "/auth/client-login/";
			accessTokenUrl += getIntent().getExtras().getString(EXTRA_PROVIDER);
			accessTokenUrl += "?"
					+ URLEncodedUtils.format(values, Consts.UTF_8.name());

			System.out.println(accessTokenUrl);

			webview.loadUrl(baseUrl + accessTokenUrl);
		} else {
			webview.loadUrl(baseUrl + setupUrl);
		}

	}

	@Override
	protected void onStart() {
		super.onStart();

		EasyTracker.getInstance().activityStart(this);
	}

	@Override
	protected void onStop() {
		super.onStop();

		EasyTracker.getInstance().activityStop(this);
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case android.R.id.home:
			// This ID represents the Home or Up button. In the case of this
			// activity, the Up button is shown. Use NavUtils to allow users
			// to navigate up one level in the application structure. For
			// more details, see the Navigation pattern on Android Design:
			//
			// http://developer.android.com/design/patterns/navigation.html#up-vs-back
			//
			NavUtils.navigateUpFromSameTask(this);
			return true;
		}
		return super.onOptionsItemSelected(item);
	}

	private class LoginWebViewClient extends WebViewClient {
		@Override
		public boolean shouldOverrideUrlLoading(WebView view, String url) {
			URL location = null;
			try {
				location = new URL(url);
			} catch (MalformedURLException e) {
				e.printStackTrace();
			}

			log.debug("Switching to url: {}", url);

			if (location.getPath().startsWith("/app-setup/done/")) {
				response.deviceId = UUID.fromString(location.getPath()
						.substring(16));
				Intent returnIntent = new Intent();
				returnIntent
						.putExtra("device_id", response.deviceId.toString());
				returnIntent.putExtra("device_password",
						response.devicePassword);
				setResult(RESULT_OK, returnIntent);
				log.debug("Login successful");
				finish();
			} else if (location.getPath().startsWith("/app-setup/fail/")) {
				Intent returnIntent = new Intent();
				setResult(RESULT_CANCELED, returnIntent);
				log.debug("Login failed");
				finish();
			} else {
				view.loadUrl(url);
			}
			return true;
		}
	}

}