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/*
* Copyright (C) 2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "CacheStorageEngineCache.h"
#include "NetworkCacheStorage.h"
#include <WebCore/ClientOrigin.h>
#include <wtf/CompletionHandler.h>
#include <wtf/Deque.h>
namespace WebKit {
namespace CacheStorage {
class Engine;
class Caches final : public RefCounted<Caches> {
public:
static String cachesSizeFilename(const String& cachesRootsPath);
static Ref<Caches> create(Engine&, WebCore::ClientOrigin&&, String&& rootPath);
~Caches();
static void retrieveOriginFromDirectory(const String& folderPath, WorkQueue&, WTF::CompletionHandler<void(std::optional<WebCore::ClientOrigin>&&)>&&);
void initialize(WebCore::DOMCacheEngine::CompletionCallback&&);
void open(const String& name, WebCore::DOMCacheEngine::CacheIdentifierCallback&&);
void remove(WebCore::DOMCacheIdentifier, WebCore::DOMCacheEngine::RemoveCacheIdentifierCallback&&);
void dispose(Cache&);
void detach();
bool isInitialized() const { return m_isInitialized; }
void cacheInfos(uint64_t updateCounter, WebCore::DOMCacheEngine::CacheInfosCallback&&);
Cache* find(WebCore::DOMCacheIdentifier);
void appendRepresentation(StringBuilder&) const;
void readRecordsList(Cache&, NetworkCache::Storage::TraverseHandler&&);
void readRecord(const NetworkCache::Key&, WTF::Function<void(Expected<WebCore::DOMCacheEngine::Record, WebCore::DOMCacheEngine::Error>&&)>&&);
void requestSpace(uint64_t spaceRequired, WebCore::DOMCacheEngine::CompletionCallback&&);
void writeRecord(const Cache&, const RecordInformation&, WebCore::DOMCacheEngine::Record&&, uint64_t previousRecordSize, WebCore::DOMCacheEngine::CompletionCallback&&);
void removeCacheEntry(const NetworkCache::Key&);
void removeRecord(const RecordInformation&);
const NetworkCache::Salt& salt() const;
const WebCore::ClientOrigin& origin() const { return m_origin; }
bool shouldPersist() const { return !m_rootPath.isNull(); }
void clear(WTF::CompletionHandler<void()>&&);
void clearMemoryRepresentation();
uint64_t storageSize() const;
void updateSizeFile(CompletionHandler<void()>&&);
private:
Caches(Engine&, WebCore::ClientOrigin&&, String&& rootPath);
void initializeSize();
void readCachesFromDisk(WTF::Function<void(Expected<Vector<Cache>, WebCore::DOMCacheEngine::Error>&&)>&&);
void writeCachesToDisk(WebCore::DOMCacheEngine::CompletionCallback&&);
void storeOrigin(WebCore::DOMCacheEngine::CompletionCallback&&);
static std::optional<WebCore::ClientOrigin> readOrigin(const NetworkCache::Data&);
Cache* find(const String& name);
void clearPendingWritingCachesToDiskCallbacks();
void makeDirty() { ++m_updateCounter; }
bool isDirty(uint64_t updateCounter) const;
bool hasActiveCache() const;
bool m_isInitialized { false };
Engine* m_engine { nullptr };
uint64_t m_updateCounter { 0 };
WebCore::ClientOrigin m_origin;
String m_rootPath;
uint64_t m_size { 0 };
Vector<Cache> m_caches;
Vector<Cache> m_removedCaches;
RefPtr<NetworkCache::Storage> m_storage;
HashMap<NetworkCache::Key, std::unique_ptr<WebCore::DOMCacheEngine::Record>> m_volatileStorage;
mutable std::optional<NetworkCache::Salt> m_volatileSalt;
Vector<WebCore::DOMCacheEngine::CompletionCallback> m_pendingInitializationCallbacks;
bool m_isWritingCachesToDisk { false };
Deque<CompletionHandler<void(std::optional<WebCore::DOMCacheEngine::Error>)>> m_pendingWritingCachesToDiskCallbacks;
};
} // namespace CacheStorage
} // namespace WebKit
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