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#include "rewriter/emoticon_rewriter.h"

#include <cstddef>
#include <memory>
#include <string>

#include "base/logging.h"
#include "base/system_util.h"
#include "base/util.h"
#include "config/config_handler.h"
#include "converter/segments.h"
#include "data_manager/testing/mock_data_manager.h"
#include "protocol/commands.pb.h"
#include "protocol/config.pb.h"
#include "request/conversion_request.h"
#include "testing/base/public/googletest.h"
#include "testing/base/public/gunit.h"
#include "testing/base/public/mozctest.h"

namespace mozc {
namespace {

void AddSegment(const string &key, const string &value,
                Segments *segments) {
  segments->Clear();
  Segment *seg = segments->push_back_segment();
  seg->set_key(key);
  Segment::Candidate *candidate = seg->add_candidate();
  candidate->Init();
  candidate->value = key;
  candidate->content_key = key;
  candidate->content_value = value;
}

bool HasEmoticon(const Segments &segments) {
  CHECK_EQ(segments.segments_size(), 1);
  for (size_t i = 0; i < segments.segment(0).candidates_size(); ++i) {
    const Segment::Candidate &candidate = segments.segment(0).candidate(i);
    // "顔文字"
    if (Util::StartsWith(candidate.description,
                         "\xE9\xA1\x94\xE6\x96\x87\xE5\xAD\x97")) {
      return true;
    }
  }
  return false;
}

class EmoticonRewriterTest : public ::testing::Test {
 protected:
  testing::MockDataManager mock_data_manager_;

 private:
  testing::ScopedTmpUserProfileDirectory scoped_profile_dir_;
};

TEST_F(EmoticonRewriterTest, BasicTest) {
  std::unique_ptr<EmoticonRewriter> emoticon_rewriter =
      EmoticonRewriter::CreateFromDataManager(mock_data_manager_);

  config::Config config;
  config::ConfigHandler::GetDefaultConfig(&config);
  ConversionRequest request;
  request.set_config(&config);
  {
    config.set_use_emoticon_conversion(true);

    Segments segments;
    AddSegment("test", "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_FALSE(HasEmoticon(segments));

    // "かお"
    AddSegment("\xE3\x81\x8B\xE3\x81\x8A", "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_TRUE(HasEmoticon(segments));

    // "かおもじ"
    AddSegment("\xE3\x81\x8B\xE3\x81\x8A\xE3\x82\x82\xE3\x81\x98",
               "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_TRUE(HasEmoticon(segments));

    // "にこにこ"
    AddSegment("\xE3\x81\xAB\xE3\x81\x93\xE3\x81\xAB\xE3\x81\x93",
               "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_TRUE(HasEmoticon(segments));

    // "ふくわらい"
    AddSegment("\xE3\x81\xB5\xE3\x81\x8F\xE3\x82\x8F\xE3\x82\x89\xE3\x81\x84",
               "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_TRUE(HasEmoticon(segments));
  }

  {
    config.set_use_emoticon_conversion(false);

    Segments segments;
    AddSegment("test", "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_FALSE(HasEmoticon(segments));

    // "かお"
    AddSegment("\xE3\x81\x8B\xE3\x81\x8A", "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_FALSE(HasEmoticon(segments));

    // "かおもじ"
    AddSegment("\xE3\x81\x8B\xE3\x81\x8A\xE3\x82\x82\xE3\x81\x98",
               "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_FALSE(HasEmoticon(segments));

    // "にこにこ"
    AddSegment("\xE3\x81\xAB\xE3\x81\x93\xE3\x81\xAB\xE3\x81\x93",
               "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_FALSE(HasEmoticon(segments));

    // "ふくわらい"
    AddSegment("\xE3\x81\xB5\xE3\x81\x8F\xE3\x82\x8F\xE3\x82\x89\xE3\x81\x84",
               "test", &segments);
    emoticon_rewriter->Rewrite(request, &segments);
    EXPECT_FALSE(HasEmoticon(segments));
  }
}

TEST_F(EmoticonRewriterTest, MobileEnvironmentTest) {
  std::unique_ptr<EmoticonRewriter> rewriter =
      EmoticonRewriter::CreateFromDataManager(mock_data_manager_);

  commands::Request request;
  ConversionRequest convreq;
  convreq.set_request(&request);

  {
    request.set_mixed_conversion(true);
    EXPECT_EQ(RewriterInterface::ALL, rewriter->capability(convreq));
  }

  {
    request.set_mixed_conversion(false);
    EXPECT_EQ(RewriterInterface::CONVERSION, rewriter->capability(convreq));
  }
}

}  // namespace
}  // namespace mozc