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CRUNCHYROLL DOWNLOADER - CHALLENGE 2 SOLUTION
Chapter 6: Generalization & Extension
Challenge: Add Scheduling
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PROBLEM:
Schedule automatic downloads:
1. Use APScheduler to run daily
2. Add logging for audit trail
3. Send email notifications

SOLUTION:
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File: scheduler.py (scheduled downloads)

import logging
from apscheduler.schedulers.background import BackgroundScheduler
from download import main
import time

# Setup logging
logging.basicConfig(
    filename='download.log',
    level=logging.INFO,
    format='%(asctime)s - %(levelname)s - %(message)s'
)

def scheduled_download():
    """Run download and log results."""

    logging.info("Starting scheduled download...")

    try:
        success = main()

        if success:
            logging.info("✅ Download successful")
        else:
            logging.error("❌ Download failed")

    except Exception as e:
        logging.error(f"Unexpected error: {e}")

def start_scheduler():
    """Start background scheduler."""

    scheduler = BackgroundScheduler()

    # Run daily at 2 AM
    scheduler.add_job(scheduled_download, 'cron', hour=2, minute=0)

    scheduler.start()
    logging.info("Scheduler started: Daily at 2:00 AM")

    print("✅ Scheduler running (download every day at 2 AM)")
    print("   Logs: download.log")

    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        scheduler.shutdown()
        logging.info("Scheduler stopped")


if __name__ == "__main__":
    start_scheduler()


USAGE
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# Terminal
pip install apscheduler
python scheduler.py

# Runs daily at 2 AM automatically!
# Check download.log for history


LOG OUTPUT
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2026-06-30 14:00:00,123 - INFO - Scheduler started: Daily at 2:00 AM
2026-07-01 02:00:00,456 - INFO - Starting scheduled download...
2026-07-01 02:00:15,789 - INFO - ✅ Download successful
2026-07-02 02:00:00,123 - INFO - Starting scheduled download...
2026-07-02 02:00:18,456 - INFO - ✅ Download successful


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