#!/usr/bin/env python3
import argparse
import json
import sys
import requests
from urllib.parse import urlparse
import getpass


def normalize_base_url(domain_or_url: str) -> str:
    parsed = urlparse(domain_or_url)
    if parsed.scheme in ("http", "https"):
        return domain_or_url.rstrip("/")
    return f"https://{domain_or_url.strip().strip('/')}"


def list_stacks(session: requests.Session, base_url: str, board_id: int):
    url = f"{base_url}/index.php/apps/deck/api/v1.0/boards/{board_id}/stacks"
    headers = {"OCS-APIRequest": "true", "Accept": "application/json"}
    resp = session.get(url, headers=headers)
    if resp.status_code != 200:
        raise RuntimeError(f"Deck API error: {resp.status_code} {resp.text}")
    return resp.json()


def main():
    parser = argparse.ArgumentParser(
        description="List stacks (id + name) for a Nextcloud Deck board."
    )
    parser.add_argument(
        "--domain",
        required=True,
        help="Nextcloud instance (e.g., example.com or https://example.com)",
    )
    parser.add_argument(
        "--board-id", required=True, type=int, help="Deck Board ID to list stacks from"
    )
    parser.add_argument(
        "--username", help="Nextcloud username (if not provided, will be prompted)"
    )
    parser.add_argument(
        "--password",
        help="Nextcloud password or app password (if not provided, will be prompted)",
    )
    parser.add_argument(
        "--json", action="store_true", help="Output raw JSON instead of a table"
    )

    args = parser.parse_args()

    # Prompt for missing creds
    username = args.username or input("Nextcloud username: ")
    password = args.password or getpass.getpass(
        "Nextcloud password (or app password): "
    )

    base_url = normalize_base_url(args.domain)

    session = requests.Session()
    session.auth = (username, password)

    try:
        stacks = list_stacks(session, base_url, args.board_id)
    except Exception as e:
        print(f"❌ Failed to fetch stacks: {e}", file=sys.stderr)
        sys.exit(1)

    if args.json:
        print(json.dumps(stacks, ensure_ascii=False, indent=2))
        return

    if not stacks:
        print("No stacks found.")
        return

    print(f"Stacks for board {args.board_id} at {base_url}:")
    print("-" * 60)
    print(f"{'ID':<8} {'NAME'}")
    print("-" * 60)
    for s in stacks:
        sid = s.get("id")
        title = s.get("title", "")
        print(f"{str(sid):<8} {title}")
    print("-" * 60)
    print("Tip: use the ID in your importer script's --stack-id.")


if __name__ == "__main__":
    main()