feat: support i18n (ko, en)

App.tsx

@@ -13,6 +13,9 @@ import { ThemeProvider } from 'styled-components/native';
 import LightTheme from './src/themes/lightTheme';
 import DarkTheme from './src/themes/darkTheme';
 
+import './src/locales/i18n';
+import { useTranslation } from 'react-i18next';
+
 export type RootStackParams = {
   Main: undefined;
   Add: undefined;
@@ -23,6 +26,7 @@ const queryClient = new QueryClient();
 const Stack = createNativeStackNavigator<RootStackParams>();
 
 const App = () => {
+  const { t } = useTranslation();
   const colorScheme = useColorScheme();
   const theme = useMemo(
     () => (colorScheme === 'dark' ? DarkTheme : LightTheme),
@@ -54,18 +58,20 @@ const App = () => {
               name={'Main'}
               component={MainScreen}
               options={{
-                title: '홈',
+                title: t('title.home'),
               }}
             />
             <Stack.Screen
               name={'Add'}
               component={CardEditScreen}
-              options={{ title: '카드 추가' }}
+              options={{
+                title: t('title.card_add'),
+              }}
             />
             <Stack.Screen
               name={'Edit'}
               component={CardEditScreen}
-              options={{ title: '카드 편집' }}
+              options={{ title: t('title.card_edit') }}
             />
           </Stack.Navigator>
         </NavigationContainer>

src/components/Card.tsx

@@ -8,6 +8,7 @@ import styled from 'styled-components/native';
 
 import CardConv from '../modules/CardConv';
 import { Card } from '../types';
+import { useTranslation } from 'react-i18next';
 
 interface CardViewProps {
   card: Card;
@@ -63,6 +64,8 @@ const BottomButtonText = styled.Text`
 const CardView = (props: CardViewProps) => {
   const { card, index, onPress: onPressFromProps, onEdit, onDelete } = props;
 
+  const { t } = useTranslation();
+
   const onPress = useCallback(() => {
     onPressFromProps?.(index);
   }, [onPressFromProps, index]);
@@ -126,13 +129,13 @@ const CardView = (props: CardViewProps) => {
                   style={styles.bottomMenuButton}
                   onPress={onPressEdit}
                 >
-                  <BottomButtonText>편집</BottomButtonText>
+                  <BottomButtonText>{t('card.edit')}</BottomButtonText>
                 </TouchableOpacity>
                 <TouchableOpacity
                   style={styles.bottomMenuButton}
                   onPress={onPressDelete}
                 >
-                  <BottomButtonText>삭제</BottomButtonText>
+                  <BottomButtonText>{t('card.remove')}</BottomButtonText>
                 </TouchableOpacity>
               </View>
             )}

src/locales/en.json

@@ -0,0 +1,41 @@
+{
+  "title": {
+    "home": "Home",
+    "card_add": "Add",
+    "card_edit": "Edit"
+  },
+  "alert": {
+    "title": {
+      "error": "Error",
+      "card_remove": "Remove"
+    },
+    "body": {
+      "hcef_not_support": "This device does not support HCE-F. Please try again with another device.",
+      "hcef_init_fail": "Failed to initialize HCE-F.\nAfter activating NFC, please restart the app\n",
+      "card_remove": "Do you want to remove the card \"{{cardName}}\"?"
+    },
+    "button": {
+      "confirm": "Confirm",
+      "remove": "Remove",
+      "cancel": "Cancel"
+    }
+  },
+  "main": {
+    "please_add_a_card": "Please add a card."
+  },
+  "card": {
+    "touch_to_activate": "Tap to activate",
+    "touch_to_deactivate": "Tap to deactivate",
+    "edit": "Edit",
+    "remove": "Remove"
+  },
+  "card_edit": {
+    "loading_card_number": "Loading card number...",
+    "invalid_card_number": "Invalid card number",
+    "card_preview": "Card Preview",
+    "card_name": "Card Name",
+    "card_number": "Card Number",
+    "change_card_number": "Change card number",
+    "save": "Save"
+  }
+}

src/locales/i18n.ts

@@ -0,0 +1,29 @@
+import i18n from 'i18next';
+import { initReactI18next } from 'react-i18next';
+import RNLanguageDetector from '@os-team/i18next-react-native-language-detector';
+
+import { default as ko } from './ko.json';
+import { default as en } from './en.json';
+
+const resources = {
+  ko: {
+    translation: ko,
+  },
+  en: {
+    translation: en,
+  },
+};
+
+i18n
+  .use(initReactI18next)
+  .use(RNLanguageDetector)
+  .init({
+    resources,
+    compatibilityJSON: 'v3',
+    fallbackLng: 'en',
+    interpolation: {
+      escapeValue: false,
+    },
+  });
+
+export default i18n;

src/locales/i18next.d.ts

@@ -0,0 +1,17 @@
+// import the original type declarations
+import 'i18next';
+// import all namespaces (for the default language, only)
+import { default as ko } from './ko.json';
+
+declare module 'i18next' {
+  // Extend CustomTypeOptions
+  interface CustomTypeOptions {
+    // custom namespace type, if you changed it
+    defaultNS: 'translation';
+    // custom resources type
+    resources: {
+      translation: typeof ko;
+    };
+    // other
+  }
+}

src/locales/ko.json

@@ -0,0 +1,41 @@
+{
+  "title": {
+    "home": "홈",
+    "card_add": "카드 추가",
+    "card_edit": "카드 편집"
+  },
+  "alert": {
+    "title": {
+      "error": "오류",
+      "card_remove": "카드 삭제"
+    },
+    "body": {
+      "hcef_not_support": "이 기기는 HCE-F를 지원하지 않습니다. 다른 기기로 다시 시도해 주세요.",
+      "hcef_init_fail": "HCE-F 초기 설정에 실패했습니다.\n앱을 종료한 뒤, NFC를 활성화하고 다시 실행해 주세요.",
+      "card_remove": "\"{{cardName}}\" 카드를 삭제하시겠습니까?"
+    },
+    "button": {
+      "confirm": "확인",
+      "remove": "삭제",
+      "cancel": "취소"
+    }
+  },
+  "main": {
+    "please_add_a_card": "카드를 추가해 주세요."
+  },
+  "card": {
+    "touch_to_activate": "터치해서 활성화",
+    "touch_to_deactivate": "터치해서 비활성화",
+    "edit": "편집",
+    "remove": "삭제"
+  },
+  "card_edit": {
+    "loading_card_number": "카드 번호를 불러오는 중...",
+    "invalid_card_number": "잘못된 카드 번호입니다.",
+    "card_preview": "카드 미리보기",
+    "card_name": "카드 이름",
+    "card_number": "카드 번호",
+    "change_card_number": "카드 번호 변경",
+    "save": "저장"
+  }
+}

src/screens/CardEditScreen.tsx

@@ -20,6 +20,7 @@ import { RootStackParams } from '../../App';
 import CardView from '../components/Card';
 import { addCard, updateCard } from '../data/cards';
 import { Card } from '../types';
+import { useTranslation } from 'react-i18next';
 
 type TextFieldProps = TextInputProps & {
   title: string;
@@ -140,6 +141,7 @@ type CardAddScreenProps = NativeStackScreenProps<RootStackParams, 'Add'>;
 type CardEditScreenProps = NativeStackScreenProps<RootStackParams, 'Edit'>;
 
 const CardEditScreen = (props: CardAddScreenProps | CardEditScreenProps) => {
+  const { t } = useTranslation();
   const initialData = props.route.params?.card ?? undefined;
 
   const [mode] = useState<'add' | 'edit'>(() => {
@@ -156,14 +158,14 @@ const CardEditScreen = (props: CardAddScreenProps | CardEditScreenProps) => {
 
   const styledUid = useMemo(() => {
     if (!uid.isSuccess) {
-      return '카드번호를 불러오는 중...';
+      return t('card_edit.loading_card_number');
     }
 
     return (
       uid.data.match(/[A-Za-z0-9]{4}/g)?.join(' - ') ??
-      '잘못된 카드 번호입니다.'
+      t('card_edit.invalid_card_number')
     );
-  }, [uid]);
+  }, [t, uid]);
 
   const onChangeCardName = useCallback((s: string) => {
     setCardName(s);
@@ -228,7 +230,7 @@ const CardEditScreen = (props: CardAddScreenProps | CardEditScreenProps) => {
             sid: cardNumber,
             name: cardName,
           }}
-          mainText={'카드 미리보기'}
+          mainText={t('card_edit.card_preview')}
           index={0 /* dummy index */}
           disabledMainButton={true}
           hideBottomMenu={true}
@@ -236,26 +238,30 @@ const CardEditScreen = (props: CardAddScreenProps | CardEditScreenProps) => {
 
         <View style={[styles.fieldItemContainer]}>
           <TextField
-            title={'카드 이름'}
+            title={t('card_edit.card_name')}
             value={cardName}
             onChangeText={onChangeCardName}
           />
         </View>
 
         <View style={styles.fieldItemContainer}>
-          <TextField title={'카드 번호'} value={styledUid} editable={false} />
+          <TextField
+            title={t('card_edit.card_number')}
+            value={styledUid}
+            editable={false}
+          />
           <Button
             containerStyle={styles.cardNumberChangeButton}
             onPress={changeCardNumber}
             disabled={!uid.isSuccess}
-            text={'카드 번호 변경'}
+            text={t('card_edit.change_card_number')}
           />
         </View>
 
         <Button
           onPress={save}
           containerStyle={styles.saveButton}
-          text={'저장'}
+          text={t('card_edit.save')}
         />
       </ScrollView>
     </Container>

src/screens/MainScreen.tsx

@@ -21,6 +21,7 @@ import CardView from '../components/Card';
 import { Card } from '../types';
 import { getCards, removeCard } from '../data/cards';
 import { RootStackParams } from '../../App';
+import { useTranslation } from 'react-i18next';
 
 const Container = styled(View)`
   flex: 1;
@@ -57,6 +58,8 @@ const CardList = (props: { cards: Card[] }) => {
   const cards = props.cards;
   const [enabledCardIndex, setEnabledCardIndex] = useState<number | null>(null);
 
+  const { t } = useTranslation();
+
   const toggleHcef = useCallback(
     async (index: number) => {
       const card = cards[index];
@@ -83,15 +86,19 @@ const CardList = (props: { cards: Card[] }) => {
     (index: number) => {
       const card = cards[index];
 
-      Alert.alert('카드 삭제', `"${card.name}" 카드를 삭제하시겠습니까?`, [
+      Alert.alert(
+        t('alert.title.card_remove'),
+        t('alert.body.card_remove', { cardName: card.name }),
+        [
           {
-          text: '삭제',
+            text: t('alert.button.confirm'),
             onPress: () => {
               deleteMutation.mutate(index);
             },
           },
-        { text: '취소' },
-      ]);
+          { text: t('alert.button.cancel') },
+        ],
+      );
     },
     [cards, deleteMutation],
   );
@@ -122,8 +129,8 @@ const CardList = (props: { cards: Card[] }) => {
             onDelete={onDelete}
             mainText={
               card.index === enabledCardIndex
-                ? '터치해서 비활성화'
-                : '터치해서 활성화'
+                ? t('card.touch_to_activate')
+                : t('card.touch_to_deactivate')
             }
           />
         )}
@@ -135,7 +142,7 @@ const CardList = (props: { cards: Card[] }) => {
   } else {
     return (
       <View style={styles.placeholderContainer}>
-        <PlaceholderText>카드를 추가해 주세요.</PlaceholderText>
+        <PlaceholderText>{t('main.please_add_a_card')}</PlaceholderText>
       </View>
     );
   }