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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.ScheduledEvent;
import net.dv8tion.jda.api.events.guild.scheduledevent.ScheduledEventUserAddEvent;
import net.dv8tion.jda.api.events.guild.scheduledevent.ScheduledEventUserRemoveEvent;
import net.dv8tion.jda.api.utils.cache.CacheFlag;
import net.dv8tion.jda.api.utils.data.DataObject;
import net.dv8tion.jda.internal.JDAImpl;
import net.dv8tion.jda.internal.entities.GuildImpl;

public class ScheduledEventUserHandler extends SocketHandler
{
    private final boolean add;

    public ScheduledEventUserHandler(JDAImpl api, boolean add)
    {
        super(api);
        this.add = add;
    }

    @Override
    protected Long handleInternally(DataObject content)
    {
        if (!getJDA().isCacheFlagSet(CacheFlag.SCHEDULED_EVENTS))
            return null;
        long guildId = content.getUnsignedLong("guild_id", 0L);
        if (getJDA().getGuildSetupController().isLocked(guildId))
            return guildId;

        GuildImpl guild = (GuildImpl) getJDA().getGuildById(guildId);
        if (guild == null)
        {
            EventCache.LOG.debug("Caching SCHEDULED_EVENT_USER_ADD for uncached guild with id {}", guildId);
            getJDA().getEventCache().cache(EventCache.Type.GUILD, guildId, responseNumber, allContent, this::handle);
            return null;
        }

        ScheduledEvent event = guild.getScheduledEventById(content.getUnsignedLong("guild_scheduled_event_id"));
        long userId = content.getUnsignedLong("user_id");
        if (event == null)
            return null;

        if (add)
            getJDA().handleEvent(new ScheduledEventUserAddEvent(getJDA(), responseNumber, event, userId));
        else
            getJDA().handleEvent(new ScheduledEventUserRemoveEvent(getJDA(), responseNumber, event, userId));

        return null;
    }
}