"""Local dev CLI for the CM bot. Mirrors Telegram /1, /2, /3 plus
operational commands. No-arg invocation drops into a stdlib TUI menu.
"""

import argparse
import sys

from .cm_bot_hal import CM_BOT_HAL


def cmd_interactive(_args):
    raise NotImplementedError("cmd_interactive is implemented in a later task")


def _print_user(user: dict) -> None:
    print(f"Username: {user['username']}")
    print(f"Password: {user['password']}")
    print(f"Link: {user['link']}")


def cmd_register(_args):
    bot = CM_BOT_HAL()
    _print_user(bot.get_user_api())


def cmd_set_pin(args):
    bot = CM_BOT_HAL()
    if not bot.is_whatsapp_url(args.link):
        print(f"ERROR: not a WhatsApp URL: {args.link}", file=sys.stderr)
        sys.exit(2)
    t_username, f_username = bot.get_whatsapp_link_username(args.link)
    success = bot.set_security_pin_api(args.link)
    if not success:
        print("ERROR: set_security_pin_api returned a falsy result", file=sys.stderr)
        sys.exit(1)
    print(f"OK: f_username={f_username} t_username={t_username}")


def build_parser() -> argparse.ArgumentParser:
    p = argparse.ArgumentParser(
        prog="bot_cli",
        description="CM Bot dev CLI (mirrors Telegram triggers).",
    )
    sub = p.add_subparsers(dest="command")

    sp = sub.add_parser("register", aliases=["get-acc"], help="Get next available account (Telegram /1).")
    sp.set_defaults(func=cmd_register)

    sp = sub.add_parser("set-pin", help="Set security PIN from a WhatsApp link (Telegram /2).")
    sp.add_argument("link")
    sp.set_defaults(func=cmd_set_pin)

    return p


def main(argv=None) -> int:
    parser = build_parser()
    args = parser.parse_args(argv)
    if args.command is None:
        return cmd_interactive(args) or 0
    return args.func(args) or 0


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