1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5  * except in compliance with the License. You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the
10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11  * KIND, either express or implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14 
15 package com.android.egg.neko;
16 
17 import android.app.Notification;
18 import android.app.NotificationChannel;
19 import android.app.NotificationManager;
20 import android.app.job.JobInfo;
21 import android.app.job.JobParameters;
22 import android.app.job.JobScheduler;
23 import android.app.job.JobService;
24 import android.content.ComponentName;
25 import android.content.Context;
26 import android.net.Uri;
27 import android.os.Bundle;
28 
29 import java.util.List;
30 import android.util.Log;
31 
32 import com.android.egg.R;
33 
34 import java.util.Random;
35 
36 import static com.android.egg.neko.Cat.PURR;
37 import static com.android.egg.neko.NekoLand.CHAN_ID;
38 
39 public class NekoService extends JobService {
40 
41     private static final String TAG = "NekoService";
42 
43     public static int JOB_ID = 42;
44 
45     public static int CAT_NOTIFICATION = 1;
46     public static int DEBUG_NOTIFICATION = 1234;
47 
48     public static float CAT_CAPTURE_PROB = 1.0f; // generous
49 
50     public static long SECONDS = 1000;
51     public static long MINUTES = 60 * SECONDS;
52 
53     public static long INTERVAL_FLEX = 5 * MINUTES;
54 
55     public static float INTERVAL_JITTER_FRAC = 0.25f;
56 
setupNotificationChannels(Context context)57     private static void setupNotificationChannels(Context context) {
58         NotificationManager noman = context.getSystemService(NotificationManager.class);
59         NotificationChannel eggChan = new NotificationChannel(CHAN_ID,
60                 context.getString(R.string.notification_channel_name),
61                 NotificationManager.IMPORTANCE_DEFAULT);
62         eggChan.setSound(Uri.EMPTY, Notification.AUDIO_ATTRIBUTES_DEFAULT); // cats are quiet
63         eggChan.setVibrationPattern(PURR); // not totally quiet though
64         eggChan.setBlockableSystem(true); // unlike a real cat, you can push this one off your lap
65         eggChan.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC); // cats sit in the window
66         noman.createNotificationChannel(eggChan);
67     }
68 
69     @Override
onStartJob(JobParameters params)70     public boolean onStartJob(JobParameters params) {
71         Log.v(TAG, "Starting job: " + String.valueOf(params));
72 
73         NotificationManager noman = getSystemService(NotificationManager.class);
74         if (NekoLand.DEBUG_NOTIFICATIONS) {
75             final Bundle extras = new Bundle();
76             extras.putString("android.substName", getString(R.string.notification_name));
77             final int size = getResources()
78                     .getDimensionPixelSize(android.R.dimen.notification_large_icon_width);
79             final Cat cat = Cat.create(this);
80             final Notification.Builder builder
81                     = cat.buildNotification(this)
82                         .setContentTitle("DEBUG")
83                         .setChannel(NekoLand.CHAN_ID)
84                         .setContentText("Ran job: " + params);
85             noman.notify(DEBUG_NOTIFICATION, builder.build());
86         }
87 
88         final PrefState prefs = new PrefState(this);
89         int food = prefs.getFoodState();
90         if (food != 0) {
91             prefs.setFoodState(0); // nom
92             final Random rng = new Random();
93             if (rng.nextFloat() <= CAT_CAPTURE_PROB) {
94                 Cat cat;
95                 List<Cat> cats = prefs.getCats();
96                 final int[] probs = getResources().getIntArray(R.array.food_new_cat_prob);
97                 final float new_cat_prob = (float)((food < probs.length) ? probs[food] : 50) / 100f;
98 
99                 if (cats.size() == 0 || rng.nextFloat() <= new_cat_prob) {
100                     cat = Cat.create(this);
101                     prefs.addCat(cat);
102                     cat.logAdd(this);
103                     Log.v(TAG, "A new cat is here: " + cat.getName());
104                 } else {
105                     cat = cats.get(rng.nextInt(cats.size()));
106                     Log.v(TAG, "A cat has returned: " + cat.getName());
107                 }
108 
109                 final Notification.Builder builder = cat.buildNotification(this);
110                 noman.notify(CAT_NOTIFICATION, builder.build());
111             }
112         }
113         cancelJob(this);
114         return false;
115     }
116 
117     @Override
onStopJob(JobParameters jobParameters)118     public boolean onStopJob(JobParameters jobParameters) {
119         return false;
120     }
121 
registerJobIfNeeded(Context context, long intervalMinutes)122     public static void registerJobIfNeeded(Context context, long intervalMinutes) {
123         JobScheduler jss = context.getSystemService(JobScheduler.class);
124         JobInfo info = jss.getPendingJob(JOB_ID);
125         if (info == null) {
126             registerJob(context, intervalMinutes);
127         }
128     }
129 
registerJob(Context context, long intervalMinutes)130     public static void registerJob(Context context, long intervalMinutes) {
131         setupNotificationChannels(context);
132 
133         JobScheduler jss = context.getSystemService(JobScheduler.class);
134         jss.cancel(JOB_ID);
135         long interval = intervalMinutes * MINUTES;
136         long jitter = (long)(INTERVAL_JITTER_FRAC * interval);
137         interval += (long)(Math.random() * (2 * jitter)) - jitter;
138         final JobInfo jobInfo = new JobInfo.Builder(JOB_ID,
139                 new ComponentName(context, NekoService.class))
140                 .setPeriodic(interval, INTERVAL_FLEX)
141                 .build();
142 
143         Log.v(TAG, "A cat will visit in " + interval + "ms: " + String.valueOf(jobInfo));
144         jss.schedule(jobInfo);
145 
146         if (NekoLand.DEBUG_NOTIFICATIONS) {
147             NotificationManager noman = context.getSystemService(NotificationManager.class);
148             noman.notify(DEBUG_NOTIFICATION, new Notification.Builder(context)
149                     .setSmallIcon(R.drawable.stat_icon)
150                     .setContentTitle(String.format("Job scheduled in %d min", (interval / MINUTES)))
151                     .setContentText(String.valueOf(jobInfo))
152                     .setPriority(Notification.PRIORITY_MIN)
153                     .setCategory(Notification.CATEGORY_SERVICE)
154                     .setChannel(NekoLand.CHAN_ID)
155                     .setShowWhen(true)
156                     .build());
157         }
158     }
159 
cancelJob(Context context)160     public static void cancelJob(Context context) {
161         JobScheduler jss = context.getSystemService(JobScheduler.class);
162         Log.v(TAG, "Canceling job");
163         jss.cancel(JOB_ID);
164     }
165 }
166