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#include "composer/internal/transliterators.h"

#include "testing/base/public/gunit.h"

namespace mozc {
namespace composer {

TEST(TransliteratorsTest, ConversionStringSelector) {
  const TransliteratorInterface *t12r =
      Transliterators::GetTransliterator(Transliterators::CONVERSION_STRING);
  // "ず", "ず"
  EXPECT_EQ("\xe3\x81\x9a", t12r->Transliterate("zu", "\xe3\x81\x9a"));
  // "っk", "っk"
  EXPECT_EQ("\xe3\x81\xa3\x6b", t12r->Transliterate("kk", "\xe3\x81\xa3\x6b"));

  string raw_lhs, raw_rhs, converted_lhs, converted_rhs;
  // "ず"
  EXPECT_TRUE(t12r->Split(1, "zu", "\xe3\x81\x9a",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("zu", raw_lhs);
  EXPECT_EQ("", raw_rhs);
  // "ず"
  EXPECT_EQ("\xe3\x81\x9a", converted_lhs);
  EXPECT_EQ("", converted_rhs);

  // "っk"
  EXPECT_TRUE(t12r->Split(1, "kk", "\xe3\x81\xa3\x6b",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("k", raw_lhs);
  EXPECT_EQ("k", raw_rhs);
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", converted_lhs);
  EXPECT_EQ("k", converted_rhs);

  // Ideally "kkk" should be separated into "っ" and "っk", but it's
  // not implemented yet.
  // "っっk"
  EXPECT_FALSE(t12r->Split(1, "kkk", "\xe3\x81\xa3\xe3\x81\xa3\x6b",
                           &raw_lhs, &raw_rhs,
                           &converted_lhs, &converted_rhs));
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", raw_lhs);
  // "っk"
  EXPECT_EQ("\xe3\x81\xa3\x6b", raw_rhs);
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", converted_lhs);
  // "っk"
  EXPECT_EQ("\xe3\x81\xa3\x6b", converted_rhs);
}

TEST(TransliteratorsTest, RawStringSelector) {
  const TransliteratorInterface *t12r =
      Transliterators::GetTransliterator(Transliterators::RAW_STRING);
  // "ず"
  EXPECT_EQ("zu", t12r->Transliterate("zu", "\xe3\x81\x9a"));
  // "っk"
  EXPECT_EQ("kk", t12r->Transliterate("kk", "\xe3\x81\xa3\x6b"));

  string raw_lhs, raw_rhs, converted_lhs, converted_rhs;
  // "ず"
  EXPECT_FALSE(t12r->Split(1, "zu", "\xe3\x81\x9a",
                           &raw_lhs, &raw_rhs,
                           &converted_lhs, &converted_rhs));
  EXPECT_EQ("z", raw_lhs);
  EXPECT_EQ("u", raw_rhs);
  EXPECT_EQ("z", converted_lhs);
  EXPECT_EQ("u", converted_rhs);

  // "っk"
  EXPECT_TRUE(t12r->Split(1, "kk", "\xe3\x81\xa3\x6b",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("k", raw_lhs);
  EXPECT_EQ("k", raw_rhs);
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", converted_lhs);
  EXPECT_EQ("k", converted_rhs);
}

TEST(TransliteratorsTest, HiraganaTransliterator) {
  const TransliteratorInterface *t12r =
      Transliterators::GetTransliterator(Transliterators::HIRAGANA);
  // "ず", "ず"
  EXPECT_EQ("\xe3\x81\x9a", t12r->Transliterate("zu", "\xe3\x81\x9a"));
  // Half width "k" is transliterated into full width "ｋ".
  // "っｋ", "っk"
  EXPECT_EQ("\xe3\x81\xa3\xef\xbd\x8b",
            t12r->Transliterate("kk", "\xe3\x81\xa3\x6b"));

  string raw_lhs, raw_rhs, converted_lhs, converted_rhs;
  // "ず"
  EXPECT_TRUE(t12r->Split(1, "zu", "\xe3\x81\x9a",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("zu", raw_lhs);
  EXPECT_EQ("", raw_rhs);
  // "ず"
  EXPECT_EQ("\xe3\x81\x9a", converted_lhs);
  EXPECT_EQ("", converted_rhs);

  // "っk"
  EXPECT_TRUE(t12r->Split(1, "kk", "\xe3\x81\xa3\x6b",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("k", raw_lhs);
  EXPECT_EQ("k", raw_rhs);
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", converted_lhs);
  EXPECT_EQ("k", converted_rhs);

  // Ideally "kkk" should be separated into "っ" and "っk", but it's
  // not implemented yet.
  // "っっk"
  EXPECT_FALSE(t12r->Split(1, "kkk", "\xe3\x81\xa3\xe3\x81\xa3\x6b",
                           &raw_lhs, &raw_rhs,
                           &converted_lhs, &converted_rhs));
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", raw_lhs);
  // "っk"
  EXPECT_EQ("\xe3\x81\xa3\x6b", raw_rhs);
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", converted_lhs);
  // "っk"
  EXPECT_EQ("\xe3\x81\xa3\x6b", converted_rhs);

  // "　"(full-width space), "　"(full-width space)
  EXPECT_EQ("\xe3\x80\x80", t12r->Transliterate(" ", "\xe3\x80\x80"));
  // " "(half-width space), "　"(full-width space)
  EXPECT_EQ("\xe3\x80\x80", t12r->Transliterate(" ", " "));
}

TEST(TransliteratorsTest, FullKatakanaTransliterator) {
  const TransliteratorInterface *t12r =
      Transliterators::GetTransliterator(Transliterators::FULL_KATAKANA);
  // "ズ", "ず"
  EXPECT_EQ("\xe3\x82\xba", t12r->Transliterate("zu", "\xe3\x81\x9a"));
  // Half width "k" is transliterated into full width "ｋ".
  // "ッｋ", "っk"
  EXPECT_EQ("\xe3\x83\x83\xef\xbd\x8b",
            t12r->Transliterate("kk", "\xe3\x81\xa3\x6b"));

  string raw_lhs, raw_rhs, converted_lhs, converted_rhs;
  // "ず"
  EXPECT_TRUE(t12r->Split(1, "zu", "\xe3\x81\x9a",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("zu", raw_lhs);
  EXPECT_EQ("", raw_rhs);
  // "ず"
  EXPECT_EQ("\xe3\x81\x9a", converted_lhs);
  EXPECT_EQ("", converted_rhs);

  // "っk"
  EXPECT_TRUE(t12r->Split(1, "kk", "\xe3\x81\xa3\x6b",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("k", raw_lhs);
  EXPECT_EQ("k", raw_rhs);
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", converted_lhs);
  EXPECT_EQ("k", converted_rhs);

  // "　"(full-width space), "　"(full-width space)
  EXPECT_EQ("\xe3\x80\x80", t12r->Transliterate(" ", "\xe3\x80\x80"));
  // " "(half-width space), "　"(full-width space)
  EXPECT_EQ("\xe3\x80\x80", t12r->Transliterate(" ", " "));
}

TEST(TransliteratorsTest, HalfKatakanaTransliterator) {
  const TransliteratorInterface *t12r =
      Transliterators::GetTransliterator(Transliterators::HALF_KATAKANA);
  // "ｽﾞ", "ず"
  EXPECT_EQ("\xef\xbd\xbd\xef\xbe\x9e",
            t12r->Transliterate("zu", "\xe3\x81\x9a"));
  // Half width "k" remains in the current implementation (can be changed).
  // "ｯk", "っk"
  EXPECT_EQ("\xef\xbd\xaf\x6b", t12r->Transliterate("kk", "\xe3\x81\xa3\x6b"));

  string raw_lhs, raw_rhs, converted_lhs, converted_rhs;
  // "ｽﾞ" is split to "ｽ" and "ﾞ".
  // "ず"
  EXPECT_FALSE(t12r->Split(1, "zu", "\xe3\x81\x9a",
                           &raw_lhs, &raw_rhs,
                           &converted_lhs, &converted_rhs));
  // "す"
  EXPECT_EQ("\xe3\x81\x99", raw_lhs);
  // "゛"
  EXPECT_EQ("\xe3\x82\x9b", raw_rhs);
  // "す"
  EXPECT_EQ("\xe3\x81\x99", converted_lhs);
  // "゛"
  EXPECT_EQ("\xe3\x82\x9b", converted_rhs);

  // "ず"
  EXPECT_TRUE(t12r->Split(2, "zu", "\xe3\x81\x9a",
                           &raw_lhs, &raw_rhs,
                           &converted_lhs, &converted_rhs));
  EXPECT_EQ("zu", raw_lhs);
  EXPECT_EQ("", raw_rhs);
  // "ず"
  EXPECT_EQ("\xe3\x81\x9a", converted_lhs);
  EXPECT_EQ("", converted_rhs);

  // "っk"
  EXPECT_TRUE(t12r->Split(1, "kk", "\xe3\x81\xa3\x6b",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("k", raw_lhs);
  EXPECT_EQ("k", raw_rhs);
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", converted_lhs);
  EXPECT_EQ("k", converted_rhs);

  // "　"(full-width space), "　"(half-width space)
  EXPECT_EQ(" ", t12r->Transliterate(" ", "\xe3\x80\x80"));
  // " "(half-width space), "　"(half-width space)
  EXPECT_EQ(" ", t12r->Transliterate(" ", " "));
}

TEST(TransliteratorsTest, HalfAsciiTransliterator) {
  const TransliteratorInterface *t12r =
      Transliterators::GetTransliterator(Transliterators::HALF_ASCII);
  // "ず"
  EXPECT_EQ("zu", t12r->Transliterate("zu", "\xe3\x81\x9a"));
  // "っk"
  EXPECT_EQ("kk", t12r->Transliterate("kk", "\xe3\x81\xa3\x6b"));

  string raw_lhs, raw_rhs, converted_lhs, converted_rhs;
  // "ず"
  EXPECT_FALSE(t12r->Split(1, "zu", "\xe3\x81\x9a",
                           &raw_lhs, &raw_rhs,
                           &converted_lhs, &converted_rhs));
  EXPECT_EQ("z", raw_lhs);
  EXPECT_EQ("u", raw_rhs);
  EXPECT_EQ("z", converted_lhs);
  EXPECT_EQ("u", converted_rhs);

  // "っk"
  EXPECT_TRUE(t12r->Split(1, "kk", "\xe3\x81\xa3\x6b",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("k", raw_lhs);
  EXPECT_EQ("k", raw_rhs);
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", converted_lhs);
  EXPECT_EQ("k", converted_rhs);

  // "　"(full-width space), "　"(half-width space)
  EXPECT_EQ(" ", t12r->Transliterate(" ", "\xe3\x80\x80"));
  // " "(half-width space), "　"(half-width space)
  EXPECT_EQ(" ", t12r->Transliterate(" ", " "));
}

TEST(TransliteratorsTest, FullAsciiTransliterator) {
  const TransliteratorInterface *t12r =
      Transliterators::GetTransliterator(Transliterators::FULL_ASCII);
  // "ｚｕ", "ず"
  EXPECT_EQ("\xef\xbd\x9a\xef\xbd\x95",
            t12r->Transliterate("zu", "\xe3\x81\x9a"));
  // "ｋｋ", "っk"
  EXPECT_EQ("\xef\xbd\x8b\xef\xbd\x8b",
            t12r->Transliterate("kk", "\xe3\x81\xa3\x6b"));

  string raw_lhs, raw_rhs, converted_lhs, converted_rhs;
  // "ず"
  EXPECT_FALSE(t12r->Split(1, "zu", "\xe3\x81\x9a",
                           &raw_lhs, &raw_rhs,
                           &converted_lhs, &converted_rhs));
  EXPECT_EQ("z", raw_lhs);
  EXPECT_EQ("u", raw_rhs);
  EXPECT_EQ("z", converted_lhs);
  EXPECT_EQ("u", converted_rhs);

  // "っk"
  EXPECT_TRUE(t12r->Split(1, "kk", "\xe3\x81\xa3\x6b",
                          &raw_lhs, &raw_rhs,
                          &converted_lhs, &converted_rhs));
  EXPECT_EQ("k", raw_lhs);
  EXPECT_EQ("k", raw_rhs);
  // "っ"
  EXPECT_EQ("\xe3\x81\xa3", converted_lhs);
  EXPECT_EQ("k", converted_rhs);

  // "　"(full-width space), "　"(full-width space)
  EXPECT_EQ("\xe3\x80\x80", t12r->Transliterate(" ", "\xe3\x80\x80"));
  // " "(half-width space), "　"(full-width space)
  EXPECT_EQ("\xe3\x80\x80", t12r->Transliterate(" ", " "));
}

}  // namespace composer
}  // namespace mozc