net.dv8tion.jda.internal.handle.ThreadMemberUpdateHandler Maven / Gradle / Ivy

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Java wrapper for the popular chat & VOIP service: Discord https://discord.com
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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.ThreadMember;
import net.dv8tion.jda.api.utils.cache.CacheView;
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.utils.UnlockHook;

public class ThreadMemberUpdateHandler extends SocketHandler
{
    public ThreadMemberUpdateHandler(JDAImpl api)
    {
        super(api);
    }

    @Override
    protected Long handleInternally(DataObject content)
    {
        long guildId = content.getLong("guild_id");
        if (api.getGuildSetupController().isLocked(guildId))
            return guildId;

        final long threadId = content.getLong("id");
        ThreadChannelImpl thread = (ThreadChannelImpl) getJDA().getThreadChannelById(threadId);
        if (thread == null)
        {
            getJDA().getEventCache().cache(EventCache.Type.CHANNEL, threadId, responseNumber, allContent, this::handle);
            EventCache.LOG.debug("THREAD_MEMBER_UPDATE attempted to update a thread that does not exist. JSON: {}", content);
            return null;
        }

        //Based on the docs it is expected that we will only ever receive THREAD_MEMBER_UPDATE when Discord needs to inform
        // us that we are a member of a ThreadChannels that we might not have in memory. Currently this only happens
        // for ThreadChannels that get unarchived.
        //Details available at: https://discord.com/developers/docs/topics/threads#unarchiving-a-thread
        long userId = content.getLong("user_id");
        if (userId != getJDA().getSelfUser().getIdLong())
        {
            JDAImpl.LOG.warn("Received a THREAD_MEMBER_UPDATE for a user that isn't the current bot user. " +
                    "This validates assumptions that THREAD_MEMBER_UPDATE would ONLY be for the current bot user. " +
                    "Skipping this dispatch for now. This should be reported as a bug." +
                    "\nDetails: {}", content);
            return null;
        }

        CacheView.SimpleCacheView view = thread.getThreadMemberView();
        try (UnlockHook lock = view.writeLock())
        {
            //We might have still had the ThreadChannel in memory, so our ThreadMember might still exist. Do an existence check.
            ThreadMember threadMember = view.getMap().get(userId);
            if (threadMember == null)
            {
                threadMember = api.getEntityBuilder().createThreadMember(thread, thread.getGuild().getSelfMember(), content);
                view.getMap().put(threadMember.getIdLong(), threadMember);
            }
        }

        return null;
    }
}