net.dv8tion.jda.core.handle.MessageDeleteHandler.java Source code

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Here is the source code for net.dv8tion.jda.core.handle.MessageDeleteHandler.java

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/*
 *     Copyright 2015-2017 Austin Keener & Michael Ritter & Florian Spie
 *
 * 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.core.handle;

import net.dv8tion.jda.client.entities.impl.GroupImpl;
import net.dv8tion.jda.client.events.message.group.GroupMessageDeleteEvent;
import net.dv8tion.jda.core.AccountType;
import net.dv8tion.jda.core.entities.MessageChannel;
import net.dv8tion.jda.core.entities.PrivateChannel;
import net.dv8tion.jda.core.entities.TextChannel;
import net.dv8tion.jda.core.entities.impl.JDAImpl;
import net.dv8tion.jda.core.entities.impl.PrivateChannelImpl;
import net.dv8tion.jda.core.entities.impl.TextChannelImpl;
import net.dv8tion.jda.core.events.message.MessageDeleteEvent;
import net.dv8tion.jda.core.events.message.guild.GuildMessageDeleteEvent;
import net.dv8tion.jda.core.events.message.priv.PrivateMessageDeleteEvent;
import org.json.JSONObject;

public class MessageDeleteHandler extends SocketHandler {

    public MessageDeleteHandler(JDAImpl api) {
        super(api);
    }

    @Override
    protected Long handleInternally(JSONObject content) {
        final long messageId = content.getLong("id");
        final long channelId = content.getLong("channel_id");

        MessageChannel channel = api.getTextChannelById(channelId);
        if (channel == null) {
            channel = api.getPrivateChannelById(channelId);
        }
        if (channel == null) {
            channel = api.getFakePrivateChannelMap().get(channelId);
        }
        if (channel == null && api.getAccountType() == AccountType.CLIENT) {
            channel = api.asClient().getGroupById(channelId);
        }
        if (channel == null) {
            api.getEventCache().cache(EventCache.Type.CHANNEL, channelId, () -> handle(responseNumber, allContent));
            EventCache.LOG.debug(
                    "Got message delete for a channel/group that is not yet cached. ChannelId: " + channelId);
            return null;
        }

        if (channel instanceof TextChannel) {
            TextChannelImpl tChan = (TextChannelImpl) channel;
            if (api.getGuildLock().isLocked(tChan.getGuild().getIdLong())) {
                return tChan.getGuild().getIdLong();
            }
            if (tChan.hasLatestMessage() && messageId == channel.getLatestMessageIdLong())
                tChan.setLastMessageId(-1); // Reset latest message id as it was deleted.
            api.getEventManager().handle(new GuildMessageDeleteEvent(api, responseNumber, messageId, tChan));
        } else if (channel instanceof PrivateChannel) {
            PrivateChannelImpl pChan = (PrivateChannelImpl) channel;
            if (channel.hasLatestMessage() && messageId == channel.getLatestMessageIdLong())
                pChan.setLastMessageId(-1); // Reset latest message id as it was deleted.
            api.getEventManager().handle(new PrivateMessageDeleteEvent(api, responseNumber, messageId, pChan));
        } else {
            GroupImpl group = (GroupImpl) channel;
            if (channel.hasLatestMessage() && messageId == channel.getLatestMessageIdLong())
                group.setLastMessageId(-1); // Reset latest message id as it was deleted.
            api.getEventManager().handle(new GroupMessageDeleteEvent(api, responseNumber, messageId, group));
        }

        //Combo event
        api.getEventManager().handle(new MessageDeleteEvent(api, responseNumber, messageId, channel));
        return null;
    }
}