FileCache.h

/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * 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.
 */
 
#pragma once
 
#include <memory>
#include <string>
 
namespace vrs {
 
using std::string;
 
class FileCache {
 public:
  static int makeFileCache(const string& app, const string& parentFolder = {});
 
  static void disableFileCache();
 
  static FileCache* getFileCache();
 
  int getFile(const string& filename, string& outFilePath);
 
  int getFile(const string& domain, const string& filename, string& outFilePath);
 
 protected:
  explicit FileCache(string mainFolder) : mainFolder_{std::move(mainFolder)} {}
 
 private:
  string mainFolder_;
 
  static std::unique_ptr<FileCache> sFileCache;
};
 
} // namespace vrs