#!/usr/bin/env python3
"""Best-effort refresh of WoodShop's lumber price book from Kent (kent.ca, NB).

Kent renders prices in the browser (the price is not in the page HTML), so a
plain HTTP fetch usually finds nothing. For reliable results install Playwright:

    pip install playwright && playwright install chromium

Then run:

    python scripts/fetch_kent_prices.py            # show what it can read
    python scripts/fetch_kent_prices.py --write     # also save to the price book

This is intentionally honest: if Kent changes their site this may stop working
and you'll need to update KENT_URLS / the parser in src/woodshop/prices.py, or
just edit prices by hand in the app (Cost tab → "Edit prices…").
"""
import argparse
import sys

from woodshop import prices as P


def main(argv=None) -> int:
    ap = argparse.ArgumentParser(description="Refresh WoodShop prices from Kent NB.")
    ap.add_argument("--write", action="store_true", help="Save fetched prices to the price book")
    ap.add_argument("--no-browser", action="store_true",
                    help="Skip the Playwright render (static HTTP only — likely finds nothing)")
    args = ap.parse_args(argv)

    print(f"Fetching {len(P.KENT_URLS)} product(s) from Kent…")
    fetched = P.fetch_kent_prices(use_browser=not args.no_browser)

    if not fetched:
        print("\n  ⚠ Could not read any live prices.")
        print("    Kent injects prices client-side; install Playwright for reliable results:")
        print("      pip install playwright && playwright install chromium")
        print("    Or edit prices by hand in the app (Cost tab → Edit prices…).")
        return 1

    print("\n  Read these prices:")
    for stock, price in sorted(fetched.items()):
        print(f"    {stock:<10} ${price:,.2f}")

    missing = sorted(set(P.KENT_URLS) - set(fetched))
    if missing:
        print(f"\n  (couldn't read: {', '.join(missing)})")

    if args.write:
        book = P.load_prices()
        book.update(fetched)
        P.save_prices(book)
        print(f"\n  ✓ saved to {P._config_path()}")
    else:
        print("\n  (dry run — pass --write to save these to the price book)")
    return 0


if __name__ == "__main__":
    sys.exit(main())