// Copyright 2026 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_CONTEXT_HUB_MEMORY_BANK_NOOP_MEMORY_BANK_H_
#define CHROME_BROWSER_CONTEXT_HUB_MEMORY_BANK_NOOP_MEMORY_BANK_H_

#include <cstdint>

#include "base/containers/span.h"
#include "chrome/browser/context_hub/memory_bank/memory_bank.h"

namespace context_hub {

// A no-op implementation of the MemoryBank interface.
// Used when the MemoryBanks feature flag is disabled.
// All operations are no-ops that immediately run callbacks.
class NoOpMemoryBank : public MemoryBank {
 public:
  NoOpMemoryBank();
  NoOpMemoryBank(const NoOpMemoryBank&) = delete;
  NoOpMemoryBank& operator=(const NoOpMemoryBank&) = delete;
  ~NoOpMemoryBank() override;

  // MemoryBank:
  void SaveMemoryBankEntry(MemoryBankEntry entry,
                           OperationCompleteCallback callback) override;
  void UpdateEntryAnnotations(int64_t id,
                              std::vector<std::string> tags,
                              std::optional<std::string> note,
                              std::optional<std::string> collection,
                              OperationCompleteCallback callback) override;
  void GetAllEntries(GetEntriesCallback callback) const override;
  void GetEntriesByIds(base::span<const int64_t> ids,
                       GetEntriesCallback callback) const override;
  void DeleteEntries(base::span<const int64_t> ids,
                     OperationCompleteCallback callback) override;
  void GetAllTags(GetStringsCallback callback) const override;
  void GetAllCollections(GetStringsCallback callback) const override;
};

}  // namespace context_hub

#endif  // CHROME_BROWSER_CONTEXT_HUB_MEMORY_BANK_NOOP_MEMORY_BANK_H_