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/*
* Copyright (C) 2018 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.incallui.rtt.impl;
import android.content.Context;
import android.support.annotation.MainThread;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.dialer.common.Assert;
import com.android.dialer.common.LogUtil;
import com.android.dialer.common.concurrent.ThreadUtil;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Random;
/** Adapter class for holding RTT chat data. */
public class RttChatAdapter extends RecyclerView.Adapter<RttChatMessageViewHolder> {
interface MessageListener {
void newMessageAdded();
}
private final Context context;
private final List<RttChatMessage> rttMessages = new ArrayList<>();
private int lastIndexOfLocalMessage = -1;
private int lastIndexOfRemoteMessage = -1;
private final TypeBot typeBot;
private final MessageListener messageListener;
RttChatAdapter(Context context, MessageListener listener) {
this.context = context;
this.messageListener = listener;
typeBot = new TypeBot(text -> ThreadUtil.postOnUiThread(() -> addRemoteMessage(text)));
}
@Override
public RttChatMessageViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(context);
View view = layoutInflater.inflate(R.layout.rtt_chat_list_item, parent, false);
return new RttChatMessageViewHolder(view);
}
@Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
@Override
public void onBindViewHolder(RttChatMessageViewHolder rttChatMessageViewHolder, int i) {
boolean isSameGroup = false;
if (i > 0) {
isSameGroup = rttMessages.get(i).isRemote == rttMessages.get(i - 1).isRemote;
}
rttChatMessageViewHolder.setMessage(rttMessages.get(i), isSameGroup);
}
@Override
public int getItemCount() {
return rttMessages.size();
}
private void updateCurrentRemoteMessage(String newText) {
RttChatMessage rttChatMessage = null;
if (lastIndexOfRemoteMessage >= 0) {
rttChatMessage = rttMessages.get(lastIndexOfRemoteMessage);
}
RttChatMessage[] newMessages = RttChatMessage.getRemoteRttChatMessage(rttChatMessage, newText);
if (rttChatMessage == null) {
lastIndexOfRemoteMessage = rttMessages.size();
rttMessages.add(lastIndexOfRemoteMessage, newMessages[0]);
rttMessages.addAll(Arrays.asList(newMessages).subList(1, newMessages.length));
notifyItemRangeInserted(lastIndexOfRemoteMessage, newMessages.length);
lastIndexOfRemoteMessage = rttMessages.size() - 1;
} else {
rttMessages.set(lastIndexOfRemoteMessage, newMessages[0]);
int lastIndex = rttMessages.size();
rttMessages.addAll(Arrays.asList(newMessages).subList(1, newMessages.length));
notifyItemChanged(lastIndexOfRemoteMessage);
notifyItemRangeInserted(lastIndex, newMessages.length);
}
if (rttMessages.get(lastIndexOfRemoteMessage).isFinished()) {
lastIndexOfRemoteMessage = -1;
}
}
private void updateCurrentLocalMessage(String newMessage) {
RttChatMessage rttChatMessage = null;
if (lastIndexOfLocalMessage >= 0) {
rttChatMessage = rttMessages.get(lastIndexOfLocalMessage);
}
if (rttChatMessage == null || rttChatMessage.isFinished()) {
rttChatMessage = new RttChatMessage();
rttChatMessage.append(newMessage);
rttMessages.add(rttChatMessage);
lastIndexOfLocalMessage = rttMessages.size() - 1;
notifyItemInserted(lastIndexOfLocalMessage);
} else {
rttChatMessage.append(newMessage);
notifyItemChanged(lastIndexOfLocalMessage);
}
}
void addLocalMessage(String message) {
LogUtil.enterBlock("RttChatAdapater.addLocalMessage");
updateCurrentLocalMessage(message);
if (messageListener != null) {
messageListener.newMessageAdded();
}
}
void submitLocalMessage() {
LogUtil.enterBlock("RttChatAdapater.submitLocalMessage");
rttMessages.get(lastIndexOfLocalMessage).finish();
notifyItemChanged(lastIndexOfLocalMessage);
lastIndexOfLocalMessage = -1;
startChatBot();
}
void addRemoteMessage(String message) {
LogUtil.enterBlock("RttChatAdapater.addRemoteMessage");
if (TextUtils.isEmpty(message)) {
return;
}
updateCurrentRemoteMessage(message);
if (messageListener != null) {
messageListener.newMessageAdded();
}
}
private void startChatBot() {
typeBot.scheduleMessage();
}
// TODO(wangqi): Move this out of this class once a bug is fixed.
private static class TypeBot {
interface Callback {
void type(String text);
}
private static final String[] CANDIDATE_MESSAGES =
new String[] {
"To RTT or not to RTT, that is the question...",
"Making TTY great again!",
"I would be more comfortable with real \"Thyme\" chatting."
+ " I don't know how to end this pun",
"お疲れ様でした",
"The FCC has mandated that I respond... I will do so begrudgingly",
"😂😂😂💯"
};
private final Random random = new Random();
private final Callback callback;
private final List<String> messageQueue = new ArrayList<>();
private int currentTypingPosition = -1;
private String currentTypingMessage = null;
TypeBot(Callback callback) {
this.callback = callback;
}
@MainThread
public void scheduleMessage() {
Assert.isMainThread();
if (random.nextDouble() < 0.5) {
return;
}
String text = CANDIDATE_MESSAGES[random.nextInt(CANDIDATE_MESSAGES.length)];
messageQueue.add(text);
typeMessage();
}
@MainThread
private void typeMessage() {
Assert.isMainThread();
if (currentTypingPosition < 0 || currentTypingMessage == null) {
if (messageQueue.size() <= 0) {
return;
}
currentTypingMessage = messageQueue.remove(0);
currentTypingPosition = 0;
}
if (currentTypingPosition < currentTypingMessage.length()) {
int size = random.nextInt(currentTypingMessage.length() - currentTypingPosition + 1);
callback.type(
currentTypingMessage.substring(currentTypingPosition, currentTypingPosition + size));
currentTypingPosition = currentTypingPosition + size;
// Wait up to 2s between typing.
ThreadUtil.postDelayedOnUiThread(this::typeMessage, 200 * random.nextInt(10));
} else {
callback.type(RttChatMessage.BUBBLE_BREAKER);
currentTypingPosition = -1;
currentTypingMessage = null;
// Wait 1-11s between two messages.
ThreadUtil.postDelayedOnUiThread(this::typeMessage, 1000 * (1 + random.nextInt(10)));
}
}
}
}
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