/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * 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 de.vanitasvitae.slam.service;

import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.NotificationCompat.CarExtender;
import android.support.v4.app.NotificationCompat.CarExtender.UnreadConversation;
import android.support.v4.app.NotificationManagerCompat;
import android.support.v4.app.RemoteInput;

public class MyMessagingService extends Service {
    public static final String READ_ACTION =
            "de.vanitasvitae.slam.ACTION_MESSAGE_READ";
    public static final String REPLY_ACTION =
            "de.vanitasvitae.slam.ACTION_MESSAGE_REPLY";
    public static final String CONVERSATION_ID = "conversation_id";
    public static final String EXTRA_VOICE_REPLY = "extra_voice_reply";
    private static final String TAG = MyMessagingService.class.getSimpleName();
    private final Messenger mMessenger = new Messenger(new IncomingHandler());
    private NotificationManagerCompat mNotificationManager;

    @Override
    public void onCreate() {
        mNotificationManager = NotificationManagerCompat.from(getApplicationContext());
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mMessenger.getBinder();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        return START_STICKY;
    }

    private Intent createIntent(int conversationId, String action) {
        return new Intent()
                .addFlags(Intent.FLAG_INCLUDE_STOPPED_PACKAGES)
                .setAction(action)
                .putExtra(CONVERSATION_ID, conversationId);
    }

    private void sendNotification(int conversationId, String message,
                                  String participant, long timestamp) {
        // A pending Intent for reads
        PendingIntent readPendingIntent = PendingIntent.getBroadcast(getApplicationContext(),
                conversationId,
                createIntent(conversationId, READ_ACTION),
                PendingIntent.FLAG_UPDATE_CURRENT);

        // Build a RemoteInput for receiving voice input in a Car Notification
        RemoteInput remoteInput = new RemoteInput.Builder(EXTRA_VOICE_REPLY)
                .setLabel("Reply by voice")
                .build();

        // Building a Pending Intent for the reply action to trigger
        PendingIntent replyIntent = PendingIntent.getBroadcast(getApplicationContext(),
                conversationId,
                createIntent(conversationId, REPLY_ACTION),
                PendingIntent.FLAG_UPDATE_CURRENT);

        // Create the UnreadConversation and populate it with the participant name,
        // read and reply intents.
        UnreadConversation.Builder unreadConvBuilder =
                new UnreadConversation.Builder(participant)
                        .setLatestTimestamp(timestamp)
                        .setReadPendingIntent(readPendingIntent)
                        .setReplyAction(replyIntent, remoteInput);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext())
                // Set the application notification icon:
                //.setSmallIcon(R.drawable.notification_icon)

                // Set the large icon, for example a picture of the other recipient of the message
                //.setLargeIcon(personBitmap)

                .setContentText(message)
                .setWhen(timestamp)
                .setContentTitle(participant)
                .setContentIntent(readPendingIntent)
                .extend(new CarExtender()
                        .setUnreadConversation(unreadConvBuilder.build()));

        mNotificationManager.notify(conversationId, builder.build());
    }

    /**
     * Handler of incoming messages from clients.
     */
    class IncomingHandler extends Handler {
        @Override
        public void handleMessage(Message msg) {
            sendNotification(1, "This is a sample message", "John Doe",
                    System.currentTimeMillis());
        }
    }
}