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//
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// modification, are permitted provided that the following conditions are
// met:
//
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// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
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// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "base/singleton.h"
#include "rewriter/calculator_rewriter.h"
#include "rewriter/collocation_rewriter.h"
#include "rewriter/date_rewriter.h"
#include "rewriter/emoticon_rewriter.h"
#include "rewriter/english_variants_rewriter.h"
#include "rewriter/focus_candidate_rewriter.h"
#include "rewriter/fortune_rewriter.h"
#include "rewriter/merger_rewriter.h"
#include "rewriter/number_rewriter.h"
#include "rewriter/rewriter_interface.h"
#include "rewriter/single_kanji_rewriter.h"
#include "rewriter/symbol_rewriter.h"
#include "rewriter/transliteration_rewriter.h"
#include "rewriter/unicode_rewriter.h"
#include "rewriter/user_boundary_history_rewriter.h"
#include "rewriter/user_segment_history_rewriter.h"
#include "rewriter/variants_rewriter.h"
#include "rewriter/version_rewriter.h"
#include "rewriter/zipcode_rewriter.h"
#if defined(OS_MACOSX) || defined(OS_WINDOWS) || defined(OS_CHROMEOS)
// TODO(horo): Usage is available only in Mac and Windows and ChromeOS now.
#include "rewriter/usage_rewriter.h"
#endif
DEFINE_bool(use_history_rewriter, true, "Use history rewriter or not.");

namespace mozc {
namespace {

class RewriterImpl : public MergerRewriter {
 public:
  RewriterImpl();
};

RewriterImpl::RewriterImpl() {
  AddRewriter(new FocusCandidateRewriter);
  AddRewriter(new TransliterationRewriter);
  AddRewriter(new EnglishVariantsRewriter);
  AddRewriter(new NumberRewriter);
  AddRewriter(new CollocationRewriter);
  AddRewriter(new SingleKanjiRewriter);
  AddRewriter(new SymbolRewriter);
  AddRewriter(new CalculatorRewriter);
  AddRewriter(new EmoticonRewriter);
  AddRewriter(new UnicodeRewriter);
  AddRewriter(new VariantsRewriter);
  AddRewriter(new ZipcodeRewriter);

  if (FLAGS_use_history_rewriter) {
    AddRewriter(new UserBoundaryHistoryRewriter);
    AddRewriter(new UserSegmentHistoryRewriter);
  }
  AddRewriter(new DateRewriter);
  AddRewriter(new FortuneRewriter);
  AddRewriter(new VersionRewriter);
#if defined(OS_MACOSX) || defined(OS_WINDOWS) || defined(OS_CHROMEOS)
  // TODO(horo): Because infolist renderer window is implimented
  //             only in Mac and Windows and ChromeOS,
  //             usage is available only in these OS.
  AddRewriter(new UsageRewriter);
#endif  // defined(OS_MACOSX) || defined(OS_WINDOWS) || defined(OS_CHROMEOS)
}

RewriterInterface *g_rewriter = NULL;

}  // namespace

RewriterInterface *RewriterFactory::GetRewriter() {
  if (g_rewriter == NULL) {
    return Singleton<RewriterImpl>::get();
  } else {
    return g_rewriter;
  }
}

void RewriterFactory::SetRewriter(RewriterInterface *rewriter) {
  g_rewriter = rewriter;
}

}  // namespace mozc