fix(transcription): Behebt Start- und API-Fehler in der App [2f488f42]

transcription-tool/backend/services/translation_service.py

@@ -0,0 +1,64 @@
+from sqlalchemy.orm import Session
+from ..database import Meeting, AnalysisResult
+from .llm_service import call_gemini_api
+from ..prompt_library import get_prompt
+from typing import Dict, Any, List
+
+def _format_transcript_for_translation(chunks: List[Any]) -> str:
+    """Formats the transcript into a single string for the translation prompt."""
+    full_transcript = []
+    # Ensure chunks are treated correctly, whether they are dicts or objects
+    for chunk in chunks:
+        json_content = getattr(chunk, 'json_content', None)
+        if not json_content:
+            continue
+        for line in json_content:
+            speaker = line.get("speaker", "Unknown")
+            text = line.get("text", "")
+            full_transcript.append(f"{speaker}: {text}")
+    return "\n".join(full_transcript)
+
+def translate_transcript(db: Session, meeting_id: int, target_language: str) -> AnalysisResult:
+    """
+    Translates the transcript of a meeting and stores it.
+    """
+    meeting = db.query(Meeting).filter(Meeting.id == meeting_id).first()
+    if not meeting:
+        raise ValueError("Meeting not found")
+
+    prompt_key = f"translation_{target_language.lower()}"
+
+    # Check if translation already exists
+    existing_translation = db.query(AnalysisResult).filter(
+        AnalysisResult.meeting_id == meeting_id,
+        AnalysisResult.prompt_key == prompt_key
+    ).first()
+
+    if existing_translation:
+        return existing_translation
+
+    # Prepare transcript
+    transcript_text = _format_transcript_for_translation(meeting.chunks)
+    if not transcript_text:
+        raise ValueError("Transcript is empty, cannot translate.")
+
+    # Get prompt from library
+    prompt = get_prompt('translate_transcript', {
+        'transcript': transcript_text,
+        'target_language': target_language
+    })
+
+    # Call Gemini API using the new service function
+    translated_text = call_gemini_api(prompt)
+
+    # Store result
+    translation_result = AnalysisResult(
+        meeting_id=meeting_id,
+        prompt_key=prompt_key,
+        result_text=translated_text
+    )
+    db.add(translation_result)
+    db.commit()
+    db.refresh(translation_result)
+
+    return translation_result