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InteractionCallbackActionImpl.java
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InteractionCallbackActionImpl.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.interactions;
import net.dv8tion.jda.api.exceptions.InteractionFailureException;
import net.dv8tion.jda.api.interactions.InteractionHook;
import net.dv8tion.jda.api.requests.Request;
import net.dv8tion.jda.api.requests.Response;
import net.dv8tion.jda.api.requests.RestAction;
import net.dv8tion.jda.api.requests.restaction.interactions.InteractionCallbackAction;
import net.dv8tion.jda.api.utils.data.DataObject;
import net.dv8tion.jda.internal.interactions.InteractionHookImpl;
import net.dv8tion.jda.internal.requests.Requester;
import net.dv8tion.jda.internal.requests.RestActionImpl;
import net.dv8tion.jda.internal.requests.Route;
import net.dv8tion.jda.internal.utils.IOUtil;
import okhttp3.MultipartBody;
import okhttp3.RequestBody;
import javax.annotation.Nonnull;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.function.Consumer;
public abstract class InteractionCallbackActionImpl extends RestActionImpl<InteractionHook> implements InteractionCallbackAction
{
protected final InteractionHookImpl hook;
protected final Map<String, InputStream> files = new HashMap<>();
public InteractionCallbackActionImpl(InteractionHookImpl hook)
{
super(hook.getJDA(), Route.Interactions.CALLBACK.compile(hook.getInteraction().getId(), hook.getInteraction().getToken()));
this.hook = hook;
}
protected abstract DataObject toData();
@Override
protected RequestBody finalizeData()
{
DataObject json = toData();
if (files.isEmpty())
return getRequestBody(json);
MultipartBody.Builder body = new MultipartBody.Builder().setType(MultipartBody.FORM);
int i = 0;
for (Map.Entry<String, InputStream> file : files.entrySet())
{
RequestBody stream = IOUtil.createRequestBody(Requester.MEDIA_TYPE_OCTET, file.getValue());
body.addFormDataPart("file" + i++, file.getKey(), stream);
}
body.addFormDataPart("payload_json", json.toString());
files.clear();
return body.build();
}
@Override
protected void handleSuccess(Response response, Request<InteractionHook> request)
{
hook.ready();
request.onSuccess(hook);
}
@Override
public void handleResponse(Response response, Request<InteractionHook> request)
{
if (!response.isOk())
hook.fail(new InteractionFailureException());
super.handleResponse(response, request);
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Here we intercept calls to queue/submit/complete to prevent double ack/reply scenarios with a better error message than discord provides //
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// This is an exception factory method that only returns an exception if we would have to throw it or fail in another way.
private IllegalStateException tryAck() // note that hook.ack() is already synchronized so this is actually thread-safe!
{
// true => we already called this before => this will never succeed!
return hook.ack() ? new IllegalStateException("This interaction has already been acknowledged or replied to. You can only reply or acknowledge an interaction (or slash command) once!")
: null; // null indicates we were successful, no exception means we can't fail :)
}
@Override
public void queue(Consumer<? super InteractionHook> success, Consumer<? super Throwable> failure)
{
IllegalStateException exception = tryAck();
if (exception != null)
{
if (failure != null)
failure.accept(exception); // if the failure callback throws that will just bubble up, which is acceptable
else
RestAction.getDefaultFailure().accept(exception);
return;
}
super.queue(success, failure);
}
@Nonnull
@Override
public CompletableFuture<InteractionHook> submit(boolean shouldQueue)
{
IllegalStateException exception = tryAck();
if (exception != null)
{
CompletableFuture<InteractionHook> future = new CompletableFuture<>();
future.completeExceptionally(exception);
return future;
}
return super.submit(shouldQueue);
}
}