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/*
* Copyright (C) 2019 The Android Open Source Project
*
* 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 org.mozilla.thirdparty.com.google.android.exoplayer2.offline;
import androidx.annotation.WorkerThread;
import java.io.IOException;
/** A writable index of {@link Download Downloads}. */
@WorkerThread
public interface WritableDownloadIndex extends DownloadIndex {
/**
* Adds or replaces a {@link Download}.
*
* <p>This method may be slow and shouldn't normally be called on the main thread.
*
* @param download The {@link Download} to be added.
* @throws IOException If an error occurs setting the state.
*/
void putDownload(Download download) throws IOException;
/**
* Removes the download with the given ID. Does nothing if a download with the given ID does not
* exist.
*
* <p>This method may be slow and shouldn't normally be called on the main thread.
*
* @param id The ID of the download to remove.
* @throws IOException If an error occurs removing the state.
*/
void removeDownload(String id) throws IOException;
/**
* Sets all {@link Download#STATE_DOWNLOADING} states to {@link Download#STATE_QUEUED}.
*
* <p>This method may be slow and shouldn't normally be called on the main thread.
*
* @throws IOException If an error occurs updating the state.
*/
void setDownloadingStatesToQueued() throws IOException;
/**
* Sets all states to {@link Download#STATE_REMOVING}.
*
* <p>This method may be slow and shouldn't normally be called on the main thread.
*
* @throws IOException If an error occurs updating the state.
*/
void setStatesToRemoving() throws IOException;
/**
* Sets the stop reason of the downloads in a terminal state ({@link Download#STATE_COMPLETED},
* {@link Download#STATE_FAILED}).
*
* <p>This method may be slow and shouldn't normally be called on the main thread.
*
* @param stopReason The stop reason.
* @throws IOException If an error occurs updating the state.
*/
void setStopReason(int stopReason) throws IOException;
/**
* Sets the stop reason of the download with the given ID in a terminal state ({@link
* Download#STATE_COMPLETED}, {@link Download#STATE_FAILED}). Does nothing if a download with the
* given ID does not exist, or if it's not in a terminal state.
*
* <p>This method may be slow and shouldn't normally be called on the main thread.
*
* @param id The ID of the download to update.
* @param stopReason The stop reason.
* @throws IOException If an error occurs updating the state.
*/
void setStopReason(String id, int stopReason) throws IOException;
}
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