admin can split a sentence into 2 sentences

sentence_api/main.py

@@ -41,7 +41,7 @@ from .models import (
     VideoUploadResponse,
 )
 from .oss import VolcanoOSSUploader
-from .processing import VideoProcessor
+from .processing import VideoProcessor, split_sentence_text
 from .repository import VideoRepository
 from .store import BoundaryStore
 from .transcription import MossTranscriber, Transcriber
@@ -328,6 +328,41 @@ def create_app(
             raise HTTPException(status_code=404, detail="Sentence was not found.")
         return sentence
 
+    @application.put(
+        "/api/v1/admin/videos/{video_hash}/sentences/{sentence_index}/split",
+        response_model=List[SentenceBoundary],
+        dependencies=[Depends(require_admin)],
+    )
+    def split_sentence(
+        payload: SentenceTextUpdate,
+        video_hash: str = SHA256_PATH,
+        sentence_index: int = ApiPath(ge=0),
+    ) -> List[SentenceBoundary]:
+        video = video_repository.get_video(video_hash)
+        sentence = video_repository.get_sentence(video_hash, sentence_index)
+        if video is None or sentence is None:
+            raise HTTPException(status_code=404, detail="Sentence was not found.")
+
+        media_path = service_settings.videos_dir / video["stored_filename"]
+        replacements = split_sentence_text(
+            transcriber=moss,
+            media_path=media_path,
+            sentence=sentence,
+            text=payload.text,
+            language=payload.language if payload.language is not None else sentence.language,
+        )
+        try:
+            result = video_repository.replace_sentence(
+                video_hash,
+                sentence_index,
+                replacements,
+            )
+        except ValueError as exc:
+            raise HTTPException(status_code=400, detail=str(exc)) from exc
+        if result is None:
+            raise HTTPException(status_code=404, detail="Sentence was not found.")
+        return result
+
     @application.delete(
         "/api/v1/admin/videos/{video_hash}",
         status_code=204,