import pandas as pd
from pathlib import Path
import logging
from course_search.scraper.course_scraper import CourseScraper

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

class DataPipeline:
    def __init__(self):
        self.scraper = CourseScraper()

    def run_pipeline(self, save_path: str, force_scrape: bool = False) -> pd.DataFrame:
        """Run the data pipeline with option to use cached data"""
        try:
            data_path = Path(save_path)
            
            # Check if cached data exists
            if not force_scrape and data_path.exists():
                logger.info("Loading cached data...")
                return pd.read_pickle(data_path)
            
            # If no cached data or force_scrape is True, scrape new data
            logger.info("Scraping course data...")
            df = self.scraper.scrape_all_courses()
            
            # Save the data
            logger.info(f"Saving data to {save_path}")
            df.to_pickle(save_path)
            
            return df
            
        except Exception as e:
            logger.error(f"Error in data pipeline: {str(e)}")
            raise