fix: handle line breaks #151

translate/translate.go

@@ -2,7 +2,7 @@
  * @Author: Vincent Young
  * @Date: 2024-09-16 11:59:24
  * @LastEditors: Vincent Yang
- * @LastEditTime: 2024-12-03 11:23:23
+ * @LastEditTime: 2025-01-20 17:09:59
  * @FilePath: /DeepLX/translate/translate.go
  * @Telegram: https://t.me/missuo
  * @GitHub: https://github.com/missuo
@@ -126,8 +126,20 @@ func TranslateByDeepLX(sourceLang, targetLang, text string, tagHandling string,
 		}, nil
 	}
 
+	// Split text by newlines and store them for later reconstruction
+	textParts := strings.Split(text, "\n")
+	var translatedParts []string
+	var allAlternatives [][]string // Store alternatives for each part
+
+	for _, part := range textParts {
+		if strings.TrimSpace(part) == "" {
+			translatedParts = append(translatedParts, "")
+			allAlternatives = append(allAlternatives, []string{""})
+			continue
+		}
+
 		// Split text first
-	splitResult, err := splitText(text, tagHandling == "html" || tagHandling == "xml", proxyURL, dlSession)
+		splitResult, err := splitText(part, tagHandling == "html" || tagHandling == "xml", proxyURL, dlSession)
 		if err != nil {
 			return DeepLXTranslationResult{
 				Code:    http.StatusServiceUnavailable,
@@ -137,7 +149,7 @@ func TranslateByDeepLX(sourceLang, targetLang, text string, tagHandling string,
 
 		// Get detected language if source language is auto
 		if sourceLang == "auto" || sourceLang == "" {
-		sourceLang = strings.ToUpper(whatlanggo.DetectLang(text).Iso6391())
+			sourceLang = strings.ToUpper(whatlanggo.DetectLang(part).Iso6391())
 		}
 
 		// Prepare jobs from split result
@@ -194,7 +206,7 @@ func TranslateByDeepLX(sourceLang, targetLang, text string, tagHandling string,
 				},
 				Jobs:      jobs,
 				Priority:  1,
-			Timestamp: getTimeStamp(getICount(text)),
+				Timestamp: getTimeStamp(getICount(part)),
 			},
 		}
 
@@ -214,7 +226,7 @@ func TranslateByDeepLX(sourceLang, targetLang, text string, tagHandling string,
 					},
 					Jobs:      jobs,
 					Priority:  1,
-				Timestamp: getTimeStamp(getICount(text)),
+					Timestamp: getTimeStamp(getICount(part)),
 				},
 			}
 		}
@@ -229,45 +241,76 @@ func TranslateByDeepLX(sourceLang, targetLang, text string, tagHandling string,
 		}
 
 		// Process translation results
-	var alternatives []string
-	var translatedText string
+		var partTranslation string
+		var partAlternatives []string
 
 		translations := result.Get("result.translations").Array()
 		if len(translations) > 0 {
-		// Get alternatives
+			// Process main translation
+			for _, translation := range translations {
+				partTranslation += translation.Get("beams.0.sentences.0.text").String() + " "
+			}
+			partTranslation = strings.TrimSpace(partTranslation)
+
+			// Process alternatives
 			numBeams := len(translations[0].Get("beams").Array())
-		for i := 0; i < numBeams; i++ {
+			for i := 1; i < numBeams; i++ { // Start from 1 since 0 is the main translation
 				var altText string
 				for _, translation := range translations {
 					beams := translation.Get("beams").Array()
 					if i < len(beams) {
-					altText += beams[i].Get("sentences.0.text").String()
+						altText += beams[i].Get("sentences.0.text").String() + " "
 					}
 				}
 				if altText != "" {
-				alternatives = append(alternatives, altText)
+					partAlternatives = append(partAlternatives, strings.TrimSpace(altText))
+				}
 			}
 		}
 
-		// Get main translation
-		for _, translation := range translations {
-			translatedText += translation.Get("beams.0.sentences.0.text").String() + " "
-		}
-		translatedText = strings.TrimSpace(translatedText)
-	}
-
-	if translatedText == "" {
+		if partTranslation == "" {
 			return DeepLXTranslationResult{
 				Code:    http.StatusServiceUnavailable,
 				Message: "Translation failed",
 			}, nil
 		}
 
+		translatedParts = append(translatedParts, partTranslation)
+		allAlternatives = append(allAlternatives, partAlternatives)
+	}
+
+	// Join all translated parts with newlines
+	translatedText := strings.Join(translatedParts, "\n")
+
+	// Combine alternatives with proper newline handling
+	var combinedAlternatives []string
+	maxAlts := 0
+	for _, alts := range allAlternatives {
+		if len(alts) > maxAlts {
+			maxAlts = len(alts)
+		}
+	}
+
+	// Create combined alternatives preserving line structure
+	for i := 0; i < maxAlts; i++ {
+		var altParts []string
+		for j, alts := range allAlternatives {
+			if i < len(alts) {
+				altParts = append(altParts, alts[i])
+			} else if len(translatedParts[j]) == 0 {
+				altParts = append(altParts, "") // Keep empty lines
+			} else {
+				altParts = append(altParts, translatedParts[j]) // Use main translation if no alternative
+			}
+		}
+		combinedAlternatives = append(combinedAlternatives, strings.Join(altParts, "\n"))
+	}
+
 	return DeepLXTranslationResult{
 		Code:         http.StatusOK,
-		ID:           id,
+		ID:           getRandomNumber(), // Using new ID for the complete translation
 		Data:         translatedText,
-		Alternatives: alternatives,
+		Alternatives: combinedAlternatives,
 		SourceLang:   sourceLang,
 		TargetLang:   targetLang,
 		Method:       map[bool]string{true: "Pro", false: "Free"}[dlSession != ""],