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#include "prediction/suggestion_filter.h"

#include "base/hash.h"
#include "base/logging.h"
#include "base/util.h"
#include "storage/existence_filter.h"

namespace mozc {

SuggestionFilter::SuggestionFilter(const char *data, size_t size) {
  filter_.reset(mozc::storage::ExistenceFilter::Read(data, size));
  LOG_IF(ERROR, filter_.get() == nullptr)
      << "SuggestionFilterData is broken";
}

SuggestionFilter::~SuggestionFilter() {}

bool SuggestionFilter::IsBadSuggestion(const string &text) const {
  if (filter_.get() == nullptr) {
    return false;
  }
  string lower_text = text;
  Util::LowerString(&lower_text);
  return filter_->Exists(Hash::Fingerprint(lower_text));
}

}  // namespace mozc