import uuid

from app.database import async_session_factory
from app.services.document_service import update_document_text
from app.utils.text_extraction import extract_text


async def process_document(doc_id: uuid.UUID, storage_path: str, mime_type: str) -> None:
    """Background task: extract text from uploaded document."""
    async with async_session_factory() as db:
        try:
            # Update status to processing
            from sqlalchemy import select
            from app.models.document import Document

            result = await db.execute(select(Document).where(Document.id == doc_id))
            doc = result.scalar_one_or_none()
            if not doc:
                return
            doc.processing_status = "processing"
            await db.commit()

            # Extract text
            text = extract_text(storage_path, mime_type)

            # Update with extracted text
            await update_document_text(db, doc_id, text, "completed" if text else "failed")
            await db.commit()

        except Exception:
            await update_document_text(db, doc_id, "", "failed")
            await db.commit()