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/*
* Copyright (C) 2015 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 com.android.tv.recommendation;
import android.content.Context;
import android.support.annotation.GuardedBy;
import android.support.annotation.VisibleForTesting;
import com.android.tv.TvSingletons;
import com.android.tv.data.Program;
import com.android.tv.data.ProgramDataManager;
import com.android.tv.data.api.Channel;
import java.util.ArrayDeque;
import java.util.Deque;
public class ChannelRecord {
// TODO: decide the value for max history size.
@VisibleForTesting static final int MAX_HISTORY_SIZE = 100;
private final Context mContext;
@GuardedBy("this")
private final Deque<WatchedProgram> mWatchHistory;
private Program mCurrentProgram;
private Channel mChannel;
private long mTotalWatchDurationMs;
private boolean mInputRemoved;
public ChannelRecord(Context context, Channel channel, boolean inputRemoved) {
mContext = context;
mChannel = channel;
mWatchHistory = new ArrayDeque<>();
mInputRemoved = inputRemoved;
}
public Channel getChannel() {
return mChannel;
}
public void setChannel(Channel channel, boolean inputRemoved) {
mChannel = channel;
mInputRemoved = inputRemoved;
}
public boolean isInputRemoved() {
return mInputRemoved;
}
public void setInputRemoved(boolean removed) {
mInputRemoved = removed;
}
public synchronized long getLastWatchEndTimeMs() {
WatchedProgram p = mWatchHistory.peekLast();
return (p == null) ? 0 : p.getWatchEndTimeMs();
}
public Program getCurrentProgram() {
long time = System.currentTimeMillis();
if (mCurrentProgram == null || mCurrentProgram.getEndTimeUtcMillis() < time) {
ProgramDataManager manager =
TvSingletons.getSingletons(mContext).getProgramDataManager();
mCurrentProgram = manager.getCurrentProgram(mChannel.getId());
}
return mCurrentProgram;
}
public long getTotalWatchDurationMs() {
return mTotalWatchDurationMs;
}
public final synchronized WatchedProgram[] getWatchHistory() {
return mWatchHistory.toArray(new WatchedProgram[mWatchHistory.size()]);
}
public synchronized void logWatchHistory(WatchedProgram p) {
mWatchHistory.offer(p);
mTotalWatchDurationMs += p.getWatchedDurationMs();
if (mWatchHistory.size() > MAX_HISTORY_SIZE) {
WatchedProgram program = mWatchHistory.poll();
mTotalWatchDurationMs -= program.getWatchedDurationMs();
}
}
}
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