/
MessageDeleteHandler.java
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/
MessageDeleteHandler.java
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/*
* Copyright 2015 Austin Keener, Michael Ritter, Florian Spieß, and the JDA contributors
*
* 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 net.dv8tion.jda.internal.handle;
import net.dv8tion.jda.api.entities.Guild;
import net.dv8tion.jda.api.entities.channel.middleman.GuildChannel;
import net.dv8tion.jda.api.entities.channel.middleman.MessageChannel;
import net.dv8tion.jda.api.events.message.MessageDeleteEvent;
import net.dv8tion.jda.api.utils.data.DataObject;
import net.dv8tion.jda.internal.JDAImpl;
import net.dv8tion.jda.internal.entities.channel.concrete.ThreadChannelImpl;
import net.dv8tion.jda.internal.requests.WebSocketClient;
public class MessageDeleteHandler extends SocketHandler
{
public MessageDeleteHandler(JDAImpl api)
{
super(api);
}
@Override
protected Long handleInternally(DataObject content)
{
Guild guild = null;
if (!content.isNull("guild_id"))
{
long guildId = content.getLong("guild_id");
if (getJDA().getGuildSetupController().isLocked(guildId))
return guildId;
guild = getJDA().getGuildById(guildId);
if (guild == null)
{
getJDA().getEventCache().cache(EventCache.Type.GUILD, guildId, responseNumber, allContent, this::handle);
EventCache.LOG.debug("Got message delete for a guild that is not yet cached. GuildId: {}", guildId);
return null;
}
}
final long messageId = content.getLong("id");
final long channelId = content.getLong("channel_id");
MessageChannel channel = getJDA().getChannelById(MessageChannel.class, channelId);
if (channel == null)
{
// If discord adds message support for unexpected types in the future, drop the event instead of caching it
if (guild != null)
{
GuildChannel actual = guild.getGuildChannelById(channelId);
if (actual != null)
{
WebSocketClient.LOG.debug("Dropping MESSAGE_DELETE for unexpected channel of type {}", actual.getType());
return null;
}
}
getJDA().getEventCache().cache(EventCache.Type.CHANNEL, channelId, responseNumber, allContent, this::handle);
EventCache.LOG.debug("Got message delete for a channel/group that is not yet cached. ChannelId: {}", channelId);
return null;
}
if (channel.getType().isThread())
{
ThreadChannelImpl gThread = (ThreadChannelImpl) channel;
//If we have less than 50 messages then we can still accurately track how many messages are in the message count.
//Once we exceed 50 messages Discord caps this value, so we cannot confidently decrement it.
int messageCount = gThread.getMessageCount();
if (messageCount < 50 && messageCount > 0)
{
gThread.setMessageCount(messageCount - 1);
}
}
getJDA().handleEvent(new MessageDeleteEvent(getJDA(), responseNumber, messageId, channel));
return null;
}
}