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#ifndef MOZC_REWRITER_USER_BOUNDARY_HISTORY_REWRITER_H_
#define MOZC_REWRITER_USER_BOUNDARY_HISTORY_REWRITER_H_

#include <optional>

#include "converter/segments.h"
#include "request/conversion_request.h"
#include "rewriter/rewriter_interface.h"
#include "storage/lru_storage.h"

namespace mozc {

class UserBoundaryHistoryRewriter : public RewriterInterface {
 public:
  UserBoundaryHistoryRewriter();

  std::optional<ResizeSegmentsRequest> CheckResizeSegmentsRequest(
      const ConversionRequest& request,
      const Segments& segments) const override;
  bool Rewrite(const ConversionRequest& request,
               Segments* segments) const override {
    return false;
  }

  void Finish(const ConversionRequest& request,
              const Segments& segments) override;
  bool Sync() override;
  bool Reload() override;
  void Clear() override;

 private:
  bool Insert(const ConversionRequest& request, const Segments& segments);

  storage::LruStorage storage_;
};

}  // namespace mozc

#endif  // MOZC_REWRITER_USER_BOUNDARY_HISTORY_REWRITER_H_
