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#include <string>

#include "base/util.h"
#include "config/config_handler.h"
#include "config/config.pb.h"
#include "converter/segments.h"
#include "dictionary/pos_matcher.h"
#include "rewriter/zipcode_rewriter.h"
#include "session/commands.pb.h"
#include "testing/base/public/gunit.h"

namespace mozc {

namespace {

enum SegmentType {
  ZIPCODE = 1,
  NON_ZIPCODE = 2,
};

void AddSegment(const string &key, const string &value,
                SegmentType type, 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;

  if (type == ZIPCODE) {
    candidate->lid = POSMatcher::GetZipcodeId();
    candidate->rid = POSMatcher::GetZipcodeId();
  }
}

bool HasZipcodeAndAddress(const Segments &segments,
                          const string &expected) {
  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);
    if (candidate.description ==
      // "郵便番号と住所"
      "\xE9\x83\xB5\xE4\xBE\xBF\xE7\x95\xAA\xE5"
      "\x8F\xB7\xE3\x81\xA8\xE4\xBD\x8F\xE6\x89\x80") {
      if (candidate.content_value == expected) {
        return true;
      }
    }
  }
  return false;
}

}  // namespace

class ZipcodeRewriterTest : public ::testing::Test {
 protected:
  virtual void SetUp() {
    Util::SetUserProfileDirectory(FLAGS_test_tmpdir);
    config::Config default_config;
    config::ConfigHandler::GetDefaultConfig(&default_config);
    config::ConfigHandler::SetConfig(default_config);
  }

  virtual void TearDown() {
    // restore config to default.
    config::Config default_config;
    config::ConfigHandler::GetDefaultConfig(&default_config);
    config::ConfigHandler::SetConfig(default_config);
  }
};

TEST_F(ZipcodeRewriterTest, BasicTest) {
  ZipcodeRewriter zipcode_rewriter;

  const string kZipcode = "107-0052";
  const string kAddress =
     // "東京都港区赤坂"
     "\xE6\x9D\xB1\xE4\xBA\xAC\xE9\x83\xBD\xE6"
     "\xB8\xAF\xE5\x8C\xBA\xE8\xB5\xA4\xE5\x9D\x82";

  {
    Segments segments;
    AddSegment("test", "test", NON_ZIPCODE, &segments);
    EXPECT_FALSE(zipcode_rewriter.Rewrite(&segments));
  }

  {
    config::Config config;
    config::ConfigHandler::GetConfig(&config);
    config.set_space_character_form(
        config::Config::FUNDAMENTAL_HALF_WIDTH);
    config::ConfigHandler::SetConfig(config);

    Segments segments;
    AddSegment(kZipcode, kAddress, ZIPCODE, &segments);
    zipcode_rewriter.Rewrite(&segments);
    EXPECT_TRUE(HasZipcodeAndAddress(segments,
                                     kZipcode + " " + kAddress));
  }

  {
    config::Config config;
    config::ConfigHandler::GetConfig(&config);
    config.set_space_character_form(
        config::Config::FUNDAMENTAL_FULL_WIDTH);
    config::ConfigHandler::SetConfig(config);

    Segments segments;
    AddSegment(kZipcode, kAddress, ZIPCODE, &segments);
    zipcode_rewriter.Rewrite(&segments);
    EXPECT_TRUE(HasZipcodeAndAddress(segments,
                                     // "　" (full-width space)
                                     kZipcode + "\xE3\x80\x80" + kAddress));
  }
}

}  // namespace mozc