1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.tv.recommendation;
18 
19 import android.content.Context;
20 import android.support.annotation.VisibleForTesting;
21 
22 import com.android.tv.TvApplication;
23 import com.android.tv.data.Channel;
24 import com.android.tv.data.Program;
25 import com.android.tv.data.ProgramDataManager;
26 import com.android.tv.util.Utils;
27 
28 import java.util.ArrayDeque;
29 import java.util.Deque;
30 
31 public class ChannelRecord {
32     // TODO: decide the value for max history size.
33     @VisibleForTesting static final int MAX_HISTORY_SIZE = 100;
34     private final Context mContext;
35     private final Deque<WatchedProgram> mWatchHistory;
36     private Program mCurrentProgram;
37     private Channel mChannel;
38     private long mTotalWatchDurationMs;
39     private boolean mInputRemoved;
40 
ChannelRecord(Context context, Channel channel, boolean inputRemoved)41     public ChannelRecord(Context context, Channel channel, boolean inputRemoved) {
42         mContext = context;
43         mChannel = channel;
44         mWatchHistory = new ArrayDeque<>();
45         mInputRemoved = inputRemoved;
46     }
47 
getChannel()48     public Channel getChannel() {
49         return mChannel;
50     }
51 
setChannel(Channel channel, boolean inputRemoved)52     public void setChannel(Channel channel, boolean inputRemoved) {
53         mChannel = channel;
54         mInputRemoved = inputRemoved;
55     }
56 
isInputRemoved()57     public boolean isInputRemoved() {
58         return mInputRemoved;
59     }
60 
setInputRemoved(boolean removed)61     public void setInputRemoved(boolean removed) {
62         mInputRemoved = removed;
63     }
64 
getLastWatchEndTimeMs()65     public long getLastWatchEndTimeMs() {
66         WatchedProgram p = mWatchHistory.peekLast();
67         return (p == null) ? 0 : p.getWatchEndTimeMs();
68     }
69 
getCurrentProgram()70     public Program getCurrentProgram() {
71         long time = System.currentTimeMillis();
72         if (mCurrentProgram == null || mCurrentProgram.getEndTimeUtcMillis() < time) {
73             ProgramDataManager manager =
74                     TvApplication.getSingletons(mContext).getProgramDataManager();
75             mCurrentProgram = manager.getCurrentProgram(mChannel.getId());
76         }
77         return mCurrentProgram;
78     }
79 
getTotalWatchDurationMs()80     public long getTotalWatchDurationMs() {
81         return mTotalWatchDurationMs;
82     }
83 
getWatchHistory()84     public final WatchedProgram[] getWatchHistory() {
85         return mWatchHistory.toArray(new WatchedProgram[mWatchHistory.size()]);
86     }
87 
logWatchHistory(WatchedProgram p)88     public void logWatchHistory(WatchedProgram p) {
89         mWatchHistory.offer(p);
90         mTotalWatchDurationMs += p.getWatchedDurationMs();
91         if (mWatchHistory.size() > MAX_HISTORY_SIZE) {
92             WatchedProgram program = mWatchHistory.poll();
93             mTotalWatchDurationMs -= program.getWatchedDurationMs();
94         }
95     }
96 }
97