import logging
import time

import click
from celery import shared_task
from sqlalchemy import delete, select

from core.db.session_factory import session_factory
from core.rag.index_processor.index_processor_factory import IndexProcessorFactory
from models.dataset import Dataset, Document, DocumentSegment

logger = logging.getLogger(__name__)


@shared_task(queue="dataset")
def clean_notion_document_task(document_ids: list[str], dataset_id: str):
    """
    Clean document when document deleted.
    :param document_ids: document ids
    :param dataset_id: dataset id

    Usage: clean_notion_document_task.delay(document_ids, dataset_id)
    """
    logger.info(click.style(f"Start clean document when import form notion document deleted: {dataset_id}", fg="green"))
    start_at = time.perf_counter()

    with session_factory.create_session() as session:
        try:
            dataset = session.query(Dataset).where(Dataset.id == dataset_id).first()

            if not dataset:
                raise Exception("Document has no dataset")
            index_type = dataset.doc_form
            index_processor = IndexProcessorFactory(index_type).init_index_processor()

            document_delete_stmt = delete(Document).where(Document.id.in_(document_ids))
            session.execute(document_delete_stmt)

            for document_id in document_ids:
                segments = session.scalars(
                    select(DocumentSegment).where(DocumentSegment.document_id == document_id)
                ).all()
                index_node_ids = [segment.index_node_id for segment in segments]

                index_processor.clean(dataset, index_node_ids, with_keywords=True, delete_child_chunks=True)
                segment_ids = [segment.id for segment in segments]
                segment_delete_stmt = delete(DocumentSegment).where(DocumentSegment.id.in_(segment_ids))
                session.execute(segment_delete_stmt)
            session.commit()
            end_at = time.perf_counter()
            logger.info(
                click.style(
                    "Clean document when import form notion document deleted end :: {} latency: {}".format(
                        dataset_id, end_at - start_at
                    ),
                    fg="green",
                )
            )
        except Exception:
            logger.exception("Cleaned document when import form notion document deleted  failed")