#!/usr/bin/env python3
"""Extract recipe schema.org JSON-LD from a recipe URL.

Uses the recipe-scrapers library (https://github.com/hhursev/recipe-scrapers)
to download a recipe page and extract the schema.org JSON-LD recipe data.

Outputs the raw schema.org JSON-LD to stdout as a JSON object suitable for
parsing by Roux's SchemaOrg Haskell types.

Usage:
    ./scripts/scrape-recipe <url>
    ./scripts/scrape-recipe --html <file> <url>   # Use pre-fetched HTML

Examples:
    ./scripts/scrape-recipe https://cooking.nytimes.com/recipes/12177-fried-rice
    ./scripts/scrape-recipe --html fried-rice.html https://example.com/recipe
"""

import argparse
import json
import sys

from recipe_scrapers import scrape_html


def main() -> None:
    parser = argparse.ArgumentParser(
        description="Extract schema.org JSON-LD from a recipe URL"
    )
    parser.add_argument("url", help="URL of the recipe")
    parser.add_argument(
        "--html",
        metavar="FILE",
        help="Read HTML from FILE instead of downloading (for testing)",
    )
    parser.add_argument(
        "--pretty",
        action="store_true",
        help="Pretty-print the JSON output",
    )
    args = parser.parse_args()

    try:
        if args.html:
            with open(args.html) as f:
                html = f.read()
            scraper = scrape_html(html=html, org_url=args.url, online=False)
        else:
            # Download the page and scrape it
            scraper = scrape_html(html=None, org_url=args.url, online=True)

        # Extract the raw schema.org data from the scraper
        schema = getattr(scraper, "schema", None)
        if schema is None:
            print("Error: scraper has no schema data", file=sys.stderr)
            sys.exit(1)

        data: dict = schema.data
        if not data:
            print("Error: schema data is empty", file=sys.stderr)
            sys.exit(1)

        indent = 2 if args.pretty else None
        json.dump(data, sys.stdout, indent=indent, ensure_ascii=False)
        sys.stdout.write("\n")

    except Exception as e:
        print(f"Error: {e}", file=sys.stderr)
        sys.exit(1)


if __name__ == "__main__":
    main()