/*
 * Copyright (C) 2013 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 edu.northwestern.cbits.activitydetector.app;

import com.google.android.gms.location.ActivityRecognitionResult;
import com.google.android.gms.location.DetectedActivity;

import android.app.IntentService;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.provider.Settings;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import android.widget.TextView;


import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * Service that receives ActivityRecognition updates. It receives updates
 * in the background, even if the main Activity is not visible.
 */
public class ActivityRecognitionIntentService extends IntentService {

    public static String ACTIVITY_NAME = "unknown";

    // Store the app's shared preferences repository
    private SharedPreferences mPrefs;

    public ActivityRecognitionIntentService() {
        // Set the label for the service's background thread
        super("ActivityRecognitionIntentService");
    }

    @Override
    public void onHandleIntent(Intent intent) {

        if (ActivityRecognitionResult.hasResult(intent)) {
            ActivityRecognitionResult result = ActivityRecognitionResult.extractResult(intent);

            // Get the most probable activity from the list of activities in the update
            DetectedActivity mostProbableActivity = result.getMostProbableActivity();

            // Get the type of activity
            int activityType = mostProbableActivity.getType();

            // Get human-readable name
            String activityName = getNameFromType(activityType);

            ACTIVITY_NAME = activityName;
        }
    }

    /**
     * Get a content Intent for the notification
     *
     * @return A PendingIntent that starts the device's Location Settings panel.
     */
    private PendingIntent getContentIntent() {

        // Set the Intent action to open Location Settings
        Intent gpsIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);

        // Create a PendingIntent to start an Activity
        return PendingIntent.getActivity(getApplicationContext(), 0, gpsIntent,
                PendingIntent.FLAG_UPDATE_CURRENT);
    }

    /**
     * Map detected activity types to strings
     *
     * @param activityType The detected activity type
     * @return A user-readable name for the type
     */
    private String getNameFromType(int activityType) {
        switch(activityType) {
            case DetectedActivity.IN_VEHICLE:
                return "in_vehicle";
            case DetectedActivity.ON_BICYCLE:
                return "on_bicycle";
            case DetectedActivity.ON_FOOT:
                return "on_foot";
            case DetectedActivity.RUNNING:
                return "running";
            case DetectedActivity.WALKING:
                return "walking";
            case DetectedActivity.STILL:
                return "still";
            case DetectedActivity.UNKNOWN:
                return "unknown";
            case DetectedActivity.TILTING:
                return "tilting";
        }
        return "unknown";
    }
}