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#include "session/internal/key_event_transformer.h"

#include "base/port.h"
#include "base/singleton.h"
#include "config/config.pb.h"
#include "session/commands.pb.h"

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

namespace mozc {
namespace session {
namespace {

void TestNumpadTransformation(commands::KeyEvent::SpecialKey input,
                              uint32 expected_key_code,
                              const string &expected_key_string,
                              commands::KeyEvent::InputStyle expected_style) {
  KeyEventTransformer *table = Singleton<KeyEventTransformer>::get();

  commands::KeyEvent key_event;
  key_event.set_special_key(input);
  EXPECT_TRUE(table->TransformKeyEvent(&key_event));

  ASSERT_TRUE(key_event.has_key_code());
  ASSERT_TRUE(key_event.has_key_string());
  ASSERT_FALSE(key_event.has_special_key());
  EXPECT_EQ(expected_key_code, key_event.key_code());
  EXPECT_EQ(expected_key_string, key_event.key_string());
  EXPECT_EQ(expected_style, key_event.input_style());
}

void TestKanaTransformation(const string &key_string,
                            uint32 expected_key_code,
                            const string &expected_key_string) {
  KeyEventTransformer *table = Singleton<KeyEventTransformer>::get();

  commands::KeyEvent key_event;
  key_event.set_key_string(key_string);

  if (key_string == expected_key_string) {
    // Should not transform key_event.
    ASSERT_FALSE(table->TransformKeyEvent(&key_event));
    return;
  }

  ASSERT_TRUE(table->TransformKeyEvent(&key_event));

  ASSERT_TRUE(key_event.has_key_string()) << key_string;
  ASSERT_FALSE(key_event.has_special_key()) << key_string;
  EXPECT_EQ(expected_key_string, key_event.key_string()) << key_string;
  EXPECT_EQ(expected_key_code, key_event.key_code()) << key_string;
}

}  // namespace

TEST(KeyEventTransformerTest, Numpad) {
  KeyEventTransformer *table = Singleton<KeyEventTransformer>::get();

  {  // "Separator to Enter"
    commands::KeyEvent key_event;
    key_event.set_special_key(commands::KeyEvent::SEPARATOR);
    EXPECT_TRUE(table->TransformKeyEvent(&key_event));

    ASSERT_TRUE(key_event.has_special_key());
    ASSERT_FALSE(key_event.has_key_code());
    EXPECT_EQ(commands::KeyEvent::ENTER, key_event.special_key());
  }

  {  // NUMPAD_INPUT_MODE
    config::Config config;
    config.set_numpad_character_form(config::Config::NUMPAD_INPUT_MODE);
    table->ReloadConfig(config);
    {
      SCOPED_TRACE("NUMPAD_INPUT_MODE: input: 0");
      // "０"
      TestNumpadTransformation(commands::KeyEvent::NUMPAD0, '0', "\xef\xbc\x90",
                               commands::KeyEvent::FOLLOW_MODE);
    }
    {
      // "＝"
      SCOPED_TRACE("NUMPAD_INPUT_MODE: input: =");
      TestNumpadTransformation(commands::KeyEvent::EQUALS, '=', "\xef\xbc\x9d",
                               commands::KeyEvent::FOLLOW_MODE);
    }
  }

  {  // NUMPAD_FULL_WIDTH
    config::Config config;
    config.set_numpad_character_form(config::Config::NUMPAD_FULL_WIDTH);
    table->ReloadConfig(config);
    {
      SCOPED_TRACE("NUMPAD_FULL_WIDTH: input: 0");
      // "０"
      TestNumpadTransformation(commands::KeyEvent::NUMPAD0, '0', "\xef\xbc\x90",
                               commands::KeyEvent::AS_IS);
    }
    {
      SCOPED_TRACE("NUMPAD_FULL_WIDTH: input: =");
      // "＝"
      TestNumpadTransformation(commands::KeyEvent::EQUALS, '=', "\xef\xbc\x9d",
                               commands::KeyEvent::AS_IS);
    }
  }

  {  // NUMPAD_HALF_WIDTH
    config::Config config;
    config.set_numpad_character_form(config::Config::NUMPAD_HALF_WIDTH);
    table->ReloadConfig(config);
    {
      SCOPED_TRACE("NUMPAD_HALF_WIDTH: input: 0");
      TestNumpadTransformation(commands::KeyEvent::NUMPAD0, '0', "0",
                               commands::KeyEvent::AS_IS);
    }
    {
      SCOPED_TRACE("NUMPAD_HALF_WIDTH: input: =");
      TestNumpadTransformation(commands::KeyEvent::EQUALS, '=', "=",
                               commands::KeyEvent::AS_IS);
    }
  }

  {  // NUMPAD_DIRECT_INPUT
    config::Config config;
    config.set_numpad_character_form(config::Config::NUMPAD_DIRECT_INPUT);
    table->ReloadConfig(config);
    {
      SCOPED_TRACE("NUMPAD_DIRECT_INPUT: input: 0");
      TestNumpadTransformation(commands::KeyEvent::NUMPAD0, '0', "0",
                               commands::KeyEvent::DIRECT_INPUT);
    }
    {
      SCOPED_TRACE("NUMPAD_DIRECT_INPUT: input: =");
      TestNumpadTransformation(commands::KeyEvent::EQUALS, '=', "=",
                               commands::KeyEvent::DIRECT_INPUT);
    }
  }
}

TEST(KeyEventTransformerTest, Kana) {
  KeyEventTransformer *table = Singleton<KeyEventTransformer>::get();

  {  // Punctuation
    const char *kFullKuten = "\xe3\x80\x81";  // "、"
    const char *kFullTouten = "\xE3\x80\x82";  // "。"
    const char *kFullComma = "\xef\xbc\x8c";  // "，"
    const char *kFullPeriod = "\xef\xbc\x8e";  // "．"

    {
      SCOPED_TRACE("KUTEN_TOUTEN");
      config::Config config;
      config.set_punctuation_method(config::Config::KUTEN_TOUTEN);
      table->ReloadConfig(config);

      TestKanaTransformation(kFullKuten, ',', kFullKuten);
      TestKanaTransformation(kFullTouten, '.', kFullTouten);
    }
    {
      SCOPED_TRACE("COMMA_PERIOD");
      config::Config config;
      config.set_punctuation_method(config::Config::COMMA_PERIOD);
      table->ReloadConfig(config);

      TestKanaTransformation(kFullKuten, ',', kFullComma);
      TestKanaTransformation(kFullTouten, '.', kFullPeriod);
    }
    {
      SCOPED_TRACE("KUTEN_PERIOD");
      config::Config config;
      config.set_punctuation_method(config::Config::KUTEN_PERIOD);
      table->ReloadConfig(config);

      TestKanaTransformation(kFullKuten, ',', kFullKuten);
      TestKanaTransformation(kFullTouten, '.', kFullPeriod);
    }
    {
      SCOPED_TRACE("COMMA_TOUTEN");
      config::Config config;
      config.set_punctuation_method(config::Config::COMMA_TOUTEN);
      table->ReloadConfig(config);

      TestKanaTransformation(kFullKuten, ',', kFullComma);
      TestKanaTransformation(kFullTouten, '.', kFullTouten);
    }
  }

  {  // Symbol
    const char *kFullLeftSquareBracket = "\xef\xbc\xbb";  // "［"
    const char *kFullRightSquareBracket = "\xef\xbc\xbd";  // "］"
    const char *kFullLeftCornerBracket = "\xe3\x80\x8c";  // "「"
    const char *kFullRightCornerBracket = "\xe3\x80\x8d";  // "」"
    const char *kFullSlash = "\xef\xbc\x8f";  // "／"
    const char *kFullMiddleDot = "\xE3\x83\xBB";  // "・"

    {
      SCOPED_TRACE("CORNER_BRACKET_MIDDLE_DOT");
      config::Config config;
      config.set_symbol_method(config::Config::CORNER_BRACKET_MIDDLE_DOT);
      table->ReloadConfig(config);

      TestKanaTransformation(kFullLeftCornerBracket, '[',
                             kFullLeftCornerBracket);
      TestKanaTransformation(kFullRightCornerBracket, ']',
                             kFullRightCornerBracket);
      TestKanaTransformation(kFullMiddleDot, '/', kFullMiddleDot);
    }
    {
      SCOPED_TRACE("SQUARE_BRACKET_SLASH");
      config::Config config;
      config.set_symbol_method(config::Config::SQUARE_BRACKET_SLASH);
      table->ReloadConfig(config);

      TestKanaTransformation(kFullLeftCornerBracket, '[',
                             kFullLeftSquareBracket);
      TestKanaTransformation(kFullRightCornerBracket, ']',
                             kFullRightSquareBracket);
      TestKanaTransformation(kFullMiddleDot, '/', kFullSlash);
    }
    {
      SCOPED_TRACE("CORNER_BRACKET_SLASH");
      config::Config config;
      config.set_symbol_method(config::Config::CORNER_BRACKET_SLASH);
      table->ReloadConfig(config);

      TestKanaTransformation(kFullLeftCornerBracket, '[',
                             kFullLeftCornerBracket);
      TestKanaTransformation(kFullRightCornerBracket, ']',
                             kFullRightCornerBracket);
      TestKanaTransformation(kFullMiddleDot, '/', kFullSlash);
    }
    {
      SCOPED_TRACE("SQUARE_BRACKET_MIDDLE_DOT");
      config::Config config;
      config.set_symbol_method(config::Config::SQUARE_BRACKET_MIDDLE_DOT);
      table->ReloadConfig(config);

      TestKanaTransformation(kFullLeftCornerBracket, '[',
                             kFullLeftSquareBracket);
      TestKanaTransformation(kFullRightCornerBracket, ']',
                             kFullRightSquareBracket);
      TestKanaTransformation(kFullMiddleDot, '/', kFullMiddleDot);
    }
  }
}

}  // namespace session
}  // namespace mozc