LogoutActivity.java

/*
    Copyright (C) 2014 Prasanna Thirumalai
    
    This file is part of StackX.

    StackX is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    StackX is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with StackX.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.prasanna.android.stacknetwork;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.webkit.CookieManager;
import android.widget.LinearLayout;

import com.prasanna.android.stacknetwork.model.StackExchangeHttpError;
import com.prasanna.android.stacknetwork.service.UserIntentService;
import com.prasanna.android.stacknetwork.sqlite.ProfileDAO;
import com.prasanna.android.stacknetwork.sqlite.SiteDAO;
import com.prasanna.android.stacknetwork.sqlite.TagDAO;
import com.prasanna.android.stacknetwork.utils.AlarmUtils;
import com.prasanna.android.stacknetwork.utils.AppUtils;
import com.prasanna.android.stacknetwork.utils.SharedPreferencesUtil;
import com.prasanna.android.stacknetwork.utils.StackXIntentAction.UserIntentAction;
import com.prasanna.android.stacknetwork.utils.StringConstants;
import com.prasanna.android.utils.LogWrapper;

public class LogoutActivity extends Activity {
  private static final String TAG = LogoutActivity.class.getSimpleName();

  private Intent deauthAppIntent;

  private ProgressDialog progressDialog;

  private BroadcastReceiver receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
      progressDialog.dismiss();

      StackExchangeHttpError error =
          (StackExchangeHttpError) intent.getSerializableExtra(UserIntentAction.LOGOUT.getAction());

      processLogoutResponse(error);
    }

  };

  private SharedPreferences sharedPreferences;

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

    setContentView(new LinearLayout(this));
    sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    String accessToken = sharedPreferences.getString(StringConstants.ACCESS_TOKEN, null);
    registerReceiver();
    startIntentService(accessToken);
  }

  @Override
  public void onStop() {
    super.onStop();
    try {
      unregisterReceiver(receiver);
    } catch (IllegalArgumentException e) {
      LogWrapper.d(TAG, e.getMessage());
    }
  }

  private void startIntentService(String accessToken) {
    progressDialog = ProgressDialog.show(LogoutActivity.this, "", "Logging out");

    deauthAppIntent = new Intent(this, UserIntentService.class);
    deauthAppIntent.putExtra(StringConstants.ACTION, UserIntentService.DEAUTH_APP);
    deauthAppIntent.putExtra(StringConstants.ACCESS_TOKEN, accessToken);
    startService(deauthAppIntent);
  }

  private void registerReceiver() {
    IntentFilter filter = new IntentFilter(UserIntentAction.LOGOUT.getAction());
    filter.addCategory(Intent.CATEGORY_DEFAULT);
    registerReceiver(receiver, filter);
  }

  private void startLoginActivity() {
    Intent intent = new Intent(this, StackNetworkListActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);
  }

  private void processLogoutResponse(StackExchangeHttpError error) {
    if (error != null && error.id == -1) {
      Editor editor = sharedPreferences.edit();
      editor.remove(StringConstants.ACCESS_TOKEN);
      editor.commit();

      AlarmUtils.cancelInboxRefreshAlarm(getApplicationContext());
      AlarmUtils.cancelPeriodicAccountSync(getApplicationContext());

      AppUtils.clearSharedPreferences(getApplicationContext());
      AppUtils.setFirstRunComplete(getApplicationContext());

      clearDatabase();
      CookieManager.getInstance().removeAllCookie();

      SharedPreferencesUtil.remove(getApplicationContext(), StringConstants.USER_ID);
      startLoginActivity();
    } else if (error != null && error.id > 0) {
      LogWrapper.d(TAG, "Logout failed with " + error.message);
      finish();
    } else {
      LogWrapper.d(TAG, "Logout failed for unknown reason");
      finish();
    }
  }

  private void clearDatabase() {
    SiteDAO.deleteAll(getApplicationContext());
    TagDAO.deleteAll(getApplicationContext());
    ProfileDAO.deleteAll(getApplicationContext());
  }
}