"""Print classic mini-league standings, including optional pagination."""

import argparse
import json
import sys
from urllib.error import URLError
from urllib.request import Request, urlopen

BASE_URL = "https://fantasy.premierleague.com/api/"


def get_json(path):
    """Send an HTTP GET request and turn the JSON response into a Python dict."""
    request = Request(
        BASE_URL + path,
        headers={"User-Agent": "FPL-API-Demo/1.0", "Accept": "application/json"},
    )
    with urlopen(request, timeout=20) as response:
        return json.load(response)


def positive_int(value):
    number = int(value)
    if number < 1:
        raise argparse.ArgumentTypeError("must be a positive integer")
    return number


def main():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--league-id", type=positive_int, default=37803)
    parser.add_argument("--page", type=positive_int, default=1)
    parser.add_argument(
        "--all-pages", action="store_true", help="fetch all pages from --page onwards"
    )
    args = parser.parse_args()

    page = args.page
    while True:
        # This example uses classic scoring; head-to-head leagues use other endpoints.
        data = get_json(
            f"leagues-classic/{args.league_id}/standings/?page_standings={page}"
        )
        if page == args.page:
            print(f"League: {data['league']['name']} (ID {args.league_id})")
        print(f"\nPage {page}")
        print(f"{'Rank':<6} {'Team':<30} {'Manager':<26} {'GW':>5} {'Total':>7} {'Entry ID':>10}")
        standings = data["standings"]
        for entry in standings["results"]:
            print(
                f"{entry['rank']:<6} {entry['entry_name']:<30} "
                f"{entry['player_name']:<26} {entry['event_total']:>5} "
                f"{entry['total']:>7} {entry['entry']:>10}"
            )
        if not standings["results"]:
            print("No ranked entries on this page.")
        if not standings["has_next"]:
            break
        if not args.all_pages:
            print(f"\nMore results available: use --page {page + 1} or --all-pages.")
            break
        page += 1


if __name__ == "__main__":
    try:
        main()
    except (URLError, TimeoutError, OSError, ValueError, KeyError) as exc:
        print(f"Unable to load league data: {exc}", file=sys.stderr)
        print("Check the classic league ID and connection. The API may also be unavailable.", file=sys.stderr)
        sys.exit(1)