UserCredentials.java

/*
 * #%L
 * Wheelmap - App
 * %%
 * Copyright (C) 2011 - 2012 Michal Harakal - Michael Kroez - Sozialhelden e.V.
 * %%
 * Wheelmap App based on the Wheelmap Service by Sozialhelden e.V.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *         http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS-IS" BASIS
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package org.wheelmap.android.modules;


import android.content.Context;
import android.content.SharedPreferences;

import org.wheelmap.android.app.WheelmapObscuredSharedPreferences;
import org.wheelmap.android.online.BuildConfig;

import oak.ObscuredSharedPreferences;

public class UserCredentials implements ICredentials {

    private static final String LOGGED_IN = "loggedin";

    private static final String E_MAIL = "email";

    private static final String API_KEY = "apiKey";

    private static final String PREFS_NAME = "credentials";

    // anonymous API key for changing wheelchair state (no access to OSM data)
    protected static String ANONYMOUNS_ACCESS_API_KEY;


    private String mApiKey;

    private String mEmail;

    private boolean mIsLoggedIn;

    private Context mContext;

    public UserCredentials(Context context) {
        mContext = context;
        ANONYMOUNS_ACCESS_API_KEY = BuildConfig.WHEELMAP_API_KEY;
        load();
    }

    /**
     * saves credential for user logged in
     */
    @Override
    public void save(final String apiKey, final String email) {
        mIsLoggedIn = true;
        mApiKey = apiKey;
        mEmail = email;
        saveSecure();
    }

    public String getApiKey() {
        if (mIsLoggedIn) {
            return mApiKey;
        } else {
            return ANONYMOUNS_ACCESS_API_KEY;
        }
    }

    public void logout() {
        mIsLoggedIn = false;
        mApiKey = null;
        saveSecure();
    }


    @Override
    public boolean isLoggedIn() {
        return mIsLoggedIn;
    }

    private void saveSecure() {
        // Restore preferences
        SharedPreferences settings = mContext.getSharedPreferences(PREFS_NAME,
                0);

        ObscuredSharedPreferences obscuredSharedPreferences = new WheelmapObscuredSharedPreferences(
                mContext, settings);

        SharedPreferences.Editor editor = obscuredSharedPreferences.edit();
        editor.putString(API_KEY, mApiKey);
        editor.putBoolean(LOGGED_IN, mIsLoggedIn);
        editor.putString(E_MAIL, mEmail);
        // Commit the edits!
        editor.commit();
    }

    private void load() {
        // Restore preferences
        SharedPreferences settings = mContext.getSharedPreferences(PREFS_NAME,
                0);

        ObscuredSharedPreferences obscuredSharedPreferences = new WheelmapObscuredSharedPreferences(
                mContext, settings);
        try {
            mApiKey = obscuredSharedPreferences.getString(API_KEY, ANONYMOUNS_ACCESS_API_KEY);
            mEmail = obscuredSharedPreferences.getString(E_MAIL, "");
            mIsLoggedIn = obscuredSharedPreferences.getBoolean(LOGGED_IN, false);
        } catch (RuntimeException e) {
            mApiKey = null;
            mEmail = null;
            mIsLoggedIn = false;
            saveSecure();
        }
    }

    @Override
    public String getUserName() {
        return mEmail;
    }

    public String toString(){
       return "User: "+mEmail;
    }
}