DataServiceHelper.java

/*
 * Copyright 2012 Feedlr
 *
 * 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.
 */

package com.chalmers.feedlr.service;

import java.util.List;

import com.chalmers.feedlr.client.Clients;
import com.chalmers.feedlr.model.Feed;
import com.chalmers.feedlr.service.DataService.FeedServiceBinder;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.util.Log;

/**
 * Class description
 * 
 * @author Olle Werme
 */

public class DataServiceHelper {

	private Context context;

	private DataService dataService;

	private boolean isBound;

	public DataServiceHelper(Context context) {
		this.context = context;
		isBound = false;
	}

	/*
	 * This method is currently not in use.
	 */
	public void updateAll() {
		List<Integer> authorizedClients = Clients.getAuthorizedClients(context);

		for (Integer client : authorizedClients) {
			switch (client) {
			case Clients.TWITTER:
				dataService.updateTwitterTimeline();
				break;
			case Clients.FACEBOOK:
				dataService.updateFacebookTimeline();
				break;
			default:
				Log.wtf(getClass().getName() + " updateAll",
						"Client does not exist");
			}
		}
	}

	/*
	 * Updates the application database USER table with all facebook friends and
	 * twitter "following users" for the registered accounts.
	 */
	public void updateUsers() {
		List<Integer> authorizedClients = Clients.getAuthorizedClients(context);

		for (Integer client : authorizedClients) {
			switch (client) {
			case Clients.TWITTER:
				dataService.updateTwitterUsers();
				break;
			case Clients.FACEBOOK:
				dataService.updateFacebookUsers();
				break;
			default:
				Log.wtf(getClass().getName() + " updateUsers",
						"Client does not exist");
			}
		}
	}

	/*
	 * Updates the application database ITEM table with the most recent feed
	 * items from all the registered accounts.
	 */
	public void updateFeed(Feed feed) {
		List<Integer> authorizedClients = Clients.getAuthorizedClients(context);

		for (Integer client : authorizedClients) {
			switch (client) {
			case Clients.TWITTER:
				dataService.updateFeedTwitterItems(feed);
				break;
			case Clients.FACEBOOK:
				dataService.updateFeedFacebookItems(feed);
				break;
			default:
				Log.wtf(getClass().getName() + " updateFeed",
						"Client does not exist");
			}
		}

	}

	public void startService() {
		Intent intent = new Intent(context, DataService.class);
		context.startService(intent);
	}

	public void stopService() {
		Intent intent = new Intent(context, DataService.class);
		context.stopService(intent);
	}

	public void bindService() {
		Intent intent = new Intent(context, DataService.class);
		isBound = context.bindService(intent, connection,
				Context.BIND_AUTO_CREATE);
	}

	public void unbindService() {
		if (isBound) {
			context.unbindService(connection);
			isBound = false;
		}
	}

	private ServiceConnection connection = new ServiceConnection() {
		@Override
		public void onServiceConnected(ComponentName name, IBinder service) {
			FeedServiceBinder binder = (FeedServiceBinder) service;
			dataService = binder.getService();
			isBound = true;
		}

		@Override
		public void onServiceDisconnected(ComponentName name) {
			dataService = null;
		}
	};
}