feat: Implement segment update and regeneration features in Audiobook API and frontend

qwen3-tts-backend/api/audiobook.py

@@ -20,6 +20,7 @@ from schemas.audiobook import (
     AudiobookChapterResponse,
     AudiobookCharacterEdit,
     AudiobookSegmentResponse,
+    AudiobookSegmentUpdate,
     AudiobookGenerateRequest,
     AudiobookAnalyzeRequest,
 )
@@ -543,6 +544,89 @@ async def get_segments(
     return result
 
 
+@router.put("/projects/{project_id}/segments/{segment_id}", response_model=AudiobookSegmentResponse)
+async def update_segment(
+    project_id: int,
+    segment_id: int,
+    data: AudiobookSegmentUpdate,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db),
+):
+    project = crud.get_audiobook_project(db, project_id, current_user.id)
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    seg = db.query(AudiobookSegment).filter(
+        AudiobookSegment.id == segment_id,
+        AudiobookSegment.project_id == project_id,
+    ).first()
+    if not seg:
+        raise HTTPException(status_code=404, detail="Segment not found")
+
+    seg = crud.update_audiobook_segment(db, segment_id, data.text, data.emo_text, data.emo_alpha)
+    char_name = seg.character.name if seg.character else None
+    return AudiobookSegmentResponse(
+        id=seg.id,
+        project_id=seg.project_id,
+        chapter_index=seg.chapter_index,
+        segment_index=seg.segment_index,
+        character_id=seg.character_id,
+        character_name=char_name,
+        text=seg.text,
+        emo_text=seg.emo_text,
+        emo_alpha=seg.emo_alpha,
+        audio_path=seg.audio_path,
+        status=seg.status,
+    )
+
+
+@router.post("/projects/{project_id}/segments/{segment_id}/regenerate", response_model=AudiobookSegmentResponse)
+async def regenerate_segment(
+    project_id: int,
+    segment_id: int,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db),
+):
+    project = crud.get_audiobook_project(db, project_id, current_user.id)
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+
+    seg = db.query(AudiobookSegment).filter(
+        AudiobookSegment.id == segment_id,
+        AudiobookSegment.project_id == project_id,
+    ).first()
+    if not seg:
+        raise HTTPException(status_code=404, detail="Segment not found")
+
+    from core.audiobook_service import generate_single_segment
+    from core.database import SessionLocal
+
+    async def run():
+        async_db = SessionLocal()
+        try:
+            db_user = crud.get_user_by_id(async_db, current_user.id)
+            await generate_single_segment(segment_id, db_user, async_db)
+        finally:
+            async_db.close()
+
+    asyncio.create_task(run())
+
+    char_name = seg.character.name if seg.character else None
+    return AudiobookSegmentResponse(
+        id=seg.id,
+        project_id=seg.project_id,
+        chapter_index=seg.chapter_index,
+        segment_index=seg.segment_index,
+        character_id=seg.character_id,
+        character_name=char_name,
+        text=seg.text,
+        emo_text=seg.emo_text,
+        emo_alpha=seg.emo_alpha,
+        audio_path=seg.audio_path,
+        status="generating",
+    )
+
+
 @router.get("/projects/{project_id}/segments/{segment_id}/audio")
 async def get_segment_audio(
     project_id: int,