/
MessagePaginationActionImpl.java
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/
MessagePaginationActionImpl.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.requests.restaction.pagination;
import net.dv8tion.jda.api.Permission;
import net.dv8tion.jda.api.entities.Member;
import net.dv8tion.jda.api.entities.Message;
import net.dv8tion.jda.api.entities.channel.middleman.GuildChannel;
import net.dv8tion.jda.api.entities.channel.middleman.MessageChannel;
import net.dv8tion.jda.api.entities.channel.unions.MessageChannelUnion;
import net.dv8tion.jda.api.exceptions.InsufficientPermissionException;
import net.dv8tion.jda.api.exceptions.ParsingException;
import net.dv8tion.jda.api.requests.Request;
import net.dv8tion.jda.api.requests.Response;
import net.dv8tion.jda.api.requests.Route;
import net.dv8tion.jda.api.requests.restaction.pagination.MessagePaginationAction;
import net.dv8tion.jda.api.utils.data.DataArray;
import net.dv8tion.jda.internal.entities.EntityBuilder;
import net.dv8tion.jda.internal.utils.Checks;
import javax.annotation.Nonnull;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class MessagePaginationActionImpl
extends PaginationActionImpl<Message, MessagePaginationAction>
implements MessagePaginationAction
{
private final MessageChannel channel;
public MessagePaginationActionImpl(MessageChannel channel)
{
super(channel.getJDA(), Route.Messages.GET_MESSAGE_HISTORY.compile(channel.getId()), 1, 100, 100);
if (channel instanceof GuildChannel)
{
GuildChannel guildChannel = (GuildChannel) channel;
Member selfMember = guildChannel.getGuild().getSelfMember();
Checks.checkAccess(selfMember, guildChannel);
if (!selfMember.hasPermission(guildChannel, Permission.MESSAGE_HISTORY))
throw new InsufficientPermissionException(guildChannel, Permission.MESSAGE_HISTORY);
}
this.channel = channel;
}
@Nonnull
@Override
public MessageChannelUnion getChannel()
{
return (MessageChannelUnion) channel;
}
@Override
protected void handleSuccess(Response response, Request<List<Message>> request)
{
DataArray array = response.getArray();
List<Message> messages = new ArrayList<>(array.length());
EntityBuilder builder = api.getEntityBuilder();
for (int i = 0; i < array.length(); i++)
{
try
{
Message msg = builder.createMessageWithChannel(array.getObject(i), channel, false);
messages.add(msg);
}
catch (ParsingException | NullPointerException e)
{
LOG.warn("Encountered an exception in MessagePagination", e);
}
catch (IllegalArgumentException e)
{
if (EntityBuilder.UNKNOWN_MESSAGE_TYPE.equals(e.getMessage()))
LOG.warn("Skipping unknown message type during pagination", e);
else
LOG.warn("Unexpected issue trying to parse message during pagination", e);
}
}
if (order == PaginationOrder.FORWARD)
Collections.reverse(messages);
if (useCache)
cached.addAll(messages);
if (!messages.isEmpty())
{
last = messages.get(messages.size() - 1);
lastKey = last.getIdLong();
}
request.onSuccess(messages);
}
@Override
protected long getKey(Message it)
{
return it.getIdLong();
}
}