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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_WEBUI_HELP_APP_UI_SEARCH_SEARCH_CONCEPT_H_
#define ASH_WEBUI_HELP_APP_UI_SEARCH_SEARCH_CONCEPT_H_
#include <vector>
#include "ash/webui/help_app_ui/search/search.mojom.h"
#include "ash/webui/help_app_ui/search/search_concept.pb.h"
#include "base/files/file_path.h"
#include "base/functional/callback_forward.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/task/sequenced_task_runner.h"
namespace ash::help_app {
// Handles persistence for the help app search. Responsible for saving
// persistence to disk and load persistence from disk.
class SearchConcept {
public:
using ReadCallback =
base::OnceCallback<void(std::vector<mojom::SearchConceptPtr>)>;
explicit SearchConcept(const base::FilePath& filepath);
~SearchConcept();
SearchConcept(const SearchConcept&) = delete;
SearchConcept& operator=(const SearchConcept&) = delete;
// Get the search concepts from the persistence.
// Should be called right after this class is constructed.
void GetSearchConcepts(ReadCallback on_read);
// Save new persistence to disk.
// Should be called when the new concepts come.
void UpdateSearchConcepts(
const std::vector<mojom::SearchConceptPtr>& concepts);
private:
void OnProtoRead(ReadCallback on_read,
std::unique_ptr<SearchConceptProto> proto);
// The path to the proto file.
const base::FilePath file_path_;
// The path to the temporary proto file.
base::FilePath temp_file_path_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
base::WeakPtrFactory<SearchConcept> weak_factory_{this};
};
} // namespace ash::help_app
#endif // ASH_WEBUI_HELP_APP_UI_SEARCH_SEARCH_CONCEPT_H_