feat: support swap auto detected language in translate page (#9072)

* feat(translate): 支持自动检测语言时交换语言并添加异常处理

* fix(i18n): 更新翻译错误信息并添加缺失的翻译项

* docs(translate): 添加与自动检测相关的交换条件检查注释

* fix(translate): 为翻译结果添加类型声明

src/renderer/src/i18n/locales/en-us.json

@@ -3612,8 +3612,10 @@
     },
     "empty": "Translation content is empty",
     "error": {
+      "detected_unknown": "Unknown language cannot be exchanged",
       "empty": "The translation result is empty content",
       "failed": "Translation failed",
+      "invalid_source": "Invalid source language",
       "not_configured": "Translation model is not configured",
       "not_supported": "Unsupported language {{language}}",
       "unknown": "An unknown error occurred during translation"

src/renderer/src/i18n/locales/ja-jp.json

@@ -3612,8 +3612,10 @@
     },
     "empty": "翻訳内容が空です",
     "error": {
+      "detected_unknown": "未知の言語は交換できません",
       "empty": "翻訳結果が空の内容です",
       "failed": "翻訳に失敗しました",
+      "invalid_source": "無効なソース言語",
       "not_configured": "翻訳モデルが設定されていません",
       "not_supported": "サポートされていない言語 {{language}}",
       "unknown": "翻訳中に不明なエラーが発生しました"

src/renderer/src/i18n/locales/ru-ru.json

@@ -3612,8 +3612,10 @@
     },
     "empty": "Содержимое перевода пусто",
     "error": {
+      "detected_unknown": "Неизвестный язык не подлежит обмену",
       "empty": "Результат перевода пуст",
       "failed": "Перевод не удалось",
+      "invalid_source": "Недопустимый исходный язык",
       "not_configured": "Модель перевода не настроена",
       "not_supported": "Язык не поддерживается {{language}}",
       "unknown": "Во время перевода возникла неизвестная ошибка"

src/renderer/src/i18n/locales/zh-cn.json

@@ -3612,8 +3612,10 @@
     },
     "empty": "翻译内容为空",
     "error": {
+      "detected_unknown": "未知语言不可交换",
       "empty": "翻译结果为空内容",
       "failed": "翻译失败",
+      "invalid_source": "无效的源语言",
       "not_configured": "翻译模型未配置",
       "not_supported": "不支持的语言 {{language}}",
       "unknown": "翻译过程中遇到未知错误"

src/renderer/src/i18n/locales/zh-tw.json

@@ -3612,8 +3612,10 @@
     },
     "empty": "翻譯內容為空",
     "error": {
+      "detected_unknown": "未知語言不可交換",
       "empty": "翻译结果为空内容",
       "failed": "翻譯失敗",
+      "invalid_source": "無效的源語言",
       "not_configured": "翻譯模型未設定",
       "not_supported": "不支援的語言 {{language}}",
       "unknown": "翻譯過程中遇到未知錯誤"

src/renderer/src/i18n/translate/el-gr.json

@@ -3612,8 +3612,10 @@
     },
     "empty": "Το μεταφρασμένο κείμενο είναι κενό",
     "error": {
+      "detected_unknown": "Άγνωστη γλώσσα μη ανταλλάξιμη",
       "empty": "το αποτέλεσμα της μετάφρασης είναι κενό περιεχόμενο",
       "failed": "Η μετάφραση απέτυχε",
+      "invalid_source": "Ακύρωση γλώσσας πηγής",
       "not_configured": "Το μοντέλο μετάφρασης δεν είναι ρυθμισμένο",
       "not_supported": "Μη υποστηριζόμενη γλώσσα {{language}}",
       "unknown": "κατά τη μετάφραση παρουσιάστηκε άγνωστο σφάλμα"

src/renderer/src/i18n/translate/es-es.json

@@ -3612,8 +3612,10 @@
     },
     "empty": "El contenido de traducción está vacío",
     "error": {
+      "detected_unknown": "Idioma desconocido no intercambiable",
       "empty": "El resultado de la traducción está vacío",
       "failed": "Fallo en la traducción",
+      "invalid_source": "Invalid source language",
       "not_configured": "El modelo de traducción no está configurado",
       "not_supported": "Idioma no compatible {{language}}",
       "unknown": "Se produjo un error desconocido durante la traducción"

src/renderer/src/i18n/translate/fr-fr.json

@@ -3612,8 +3612,10 @@
     },
     "empty": "Le contenu à traduire est vide",
     "error": {
+      "detected_unknown": "Langue inconnue non échangeable",
       "empty": "Le résultat de la traduction est un contenu vide",
       "failed": "échec de la traduction",
+      "invalid_source": "Langue source invalide",
       "not_configured": "le modèle de traduction n'est pas configuré",
       "not_supported": "Langue non prise en charge {{language}}",
       "unknown": "Une erreur inconnue s'est produite lors de la traduction"

src/renderer/src/i18n/translate/pt-pt.json

@@ -3612,8 +3612,10 @@
     },
     "empty": "O conteúdo de tradução está vazio",
     "error": {
+      "detected_unknown": "Idioma desconhecido não pode ser trocado",
       "empty": "Resultado da tradução está vazio",
       "failed": "Tradução falhou",
+      "invalid_source": "Idioma de origem inválido",
       "not_configured": "Modelo de tradução não configurado",
       "not_supported": "Idioma não suportado {{language}}",
       "unknown": "Ocorreu um erro desconhecido durante a tradução"

src/renderer/src/pages/translate/TranslatePage.tsx

@@ -116,7 +116,7 @@ const TranslatePage: FC = () => {
 
       setTranslating(true)
 
-      let translated
+      let translated: string
       try {
         translated = await translateText(text, actualTargetLanguage, throttle(setTranslatedContent, 100))
       } catch (e) {
@@ -224,17 +224,33 @@ const TranslatePage: FC = () => {
   }
 
   // 控制语言切换按钮
-  const couldExchange = useMemo(() => sourceLanguage !== 'auto' && !isBidirectional, [isBidirectional, sourceLanguage])
+  /** 与自动检测相关的交换条件检查 */
+  const couldExchangeAuto = useMemo(
+    () =>
+      (sourceLanguage === 'auto' && detectedLanguage && detectedLanguage.langCode !== UNKNOWN.langCode) ||
+      sourceLanguage !== 'auto',
+    [detectedLanguage, sourceLanguage]
+  )
+
+  const couldExchange = useMemo(() => couldExchangeAuto && !isBidirectional, [couldExchangeAuto, isBidirectional])
 
   const handleExchange = useCallback(() => {
-    if (sourceLanguage === 'auto') {
+    if (sourceLanguage === 'auto' && !couldExchangeAuto) {
+      return
+    }
+    const source = sourceLanguage === 'auto' ? detectedLanguage : sourceLanguage
+    if (!source) {
+      window.message.error(t('translate.error.invalid_source'))
+      return
+    }
+    if (source.langCode === UNKNOWN.langCode) {
+      window.message.error(t('translate.error.detected_unknown'))
       return
     }
-    const source = sourceLanguage
     const target = targetLanguage
     setSourceLanguage(target)
     setTargetLanguage(source)
-  }, [sourceLanguage, targetLanguage])
+  }, [couldExchangeAuto, detectedLanguage, sourceLanguage, t, targetLanguage])
 
   useEffect(() => {
     isEmpty(text) && setTranslatedContent('')