#!/usr/bin/env python3
"""
Send Daily Report via Email

Generates and emails the daily POTE summary report.

Usage:
    python scripts/send_daily_report.py --to user@example.com
    python scripts/send_daily_report.py --to user1@example.com,user2@example.com --test-smtp
"""

import argparse
import logging
import sys
from datetime import date
from pathlib import Path

# Add project root to path
sys.path.insert(0, str(Path(__file__).parent.parent))

from pote.db import get_session
from pote.reporting.email_reporter import EmailReporter
from pote.reporting.report_generator import ReportGenerator

logging.basicConfig(
    level=logging.INFO, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
)
logger = logging.getLogger(__name__)


def main():
    parser = argparse.ArgumentParser(description="Send daily POTE report via email")
    parser.add_argument(
        "--to", required=True, help="Recipient email addresses (comma-separated)"
    )
    parser.add_argument(
        "--date",
        help="Report date (YYYY-MM-DD), defaults to today",
        default=None,
    )
    parser.add_argument(
        "--test-smtp",
        action="store_true",
        help="Test SMTP connection before sending",
    )
    parser.add_argument(
        "--save-to-file",
        help="Also save report to this file path",
        default=None,
    )

    args = parser.parse_args()

    # Parse recipients
    to_emails = [email.strip() for email in args.to.split(",")]

    # Parse date if provided
    report_date = None
    if args.date:
        try:
            report_date = date.fromisoformat(args.date)
        except ValueError:
            logger.error(f"Invalid date format: {args.date}. Use YYYY-MM-DD")
            sys.exit(1)

    # Initialize email reporter
    email_reporter = EmailReporter()

    # Test SMTP connection if requested
    if args.test_smtp:
        logger.info("Testing SMTP connection...")
        if not email_reporter.test_connection():
            logger.error("SMTP connection test failed. Check your SMTP settings in .env")
            logger.info(
                "Required settings: SMTP_HOST, SMTP_PORT, SMTP_USER, SMTP_PASSWORD, FROM_EMAIL"
            )
            sys.exit(1)
        logger.info("SMTP connection test successful!")

    # Generate report
    logger.info(f"Generating daily report for {report_date or date.today()}...")
    with get_session() as session:
        generator = ReportGenerator(session)
        report_data = generator.generate_daily_summary(report_date)

        # Format as text and HTML
        text_body = generator.format_as_text(report_data, "daily")
        html_body = generator.format_as_html(report_data, "daily")

    # Save to file if requested
    if args.save_to_file:
        with open(args.save_to_file, "w") as f:
            f.write(text_body)
        logger.info(f"Report saved to {args.save_to_file}")

    # Send email
    subject = f"POTE Daily Report - {report_data['date']}"
    logger.info(f"Sending report to {', '.join(to_emails)}...")

    success = email_reporter.send_report(
        to_emails=to_emails,
        subject=subject,
        body_text=text_body,
        body_html=html_body,
    )

    if success:
        logger.info("Report sent successfully!")
        # Print summary to stdout
        print("\n" + text_body + "\n")
        sys.exit(0)
    else:
        logger.error("Failed to send report. Check logs for details.")
        sys.exit(1)


if __name__ == "__main__":
    main()