patch(pkg/translate/localai): do not need to parse JSON response

Author: sumire88

pkg/translate/localai.go

@@ -52,12 +52,7 @@ Translate the following input text to English. Segments originally written in En
 
 The input text may be in Markdown format. Preserve all original formatting and structure in the output.
 
-Return the result in JSON format with the following structure:
-
-{
-  "original_text_lang": "x",  // "en" if the input was entirely English; otherwise, "non-en"
-  "translated_text": "...translated or mixed result here..."
-}
+Return the result in text format, with no additional explanations or comments.
 
 ---
 Text:
@@ -101,26 +96,11 @@ Text:
 		return "", errors.New("no choices in response")
 	}
 
-	// Parse model's JSON reply
-	var modelReply struct {
-		OriginalTextLang string `json:"original_text_lang"`
-		TranslatedText   string `json:"translated_text"`
-	}
-
-	if err := json.Unmarshal([]byte(res.Choices[0].Message.Content), &modelReply); err != nil {
-		return "", errors.New("failed to parse model JSON response: " + err.Error())
-	}
-
-	// Check if the original text was already in English
-	if modelReply.OriginalTextLang == "en" {
-		return "", errors.New("all lines are already in English, no translation needed")
-	}
-
 	// Close the response body to avoid resource leaks
 	err = resp.Body.Close()
 	if err != nil {
 		return "", errors.New("failed to close response body: " + err.Error())
 	}
 
-	return modelReply.TranslatedText, nil
+	return res.Choices[0].Message.Content, nil
 }