#!/usr/bin/env python3
"""Patch wifi_key, wifi_ssid, and/or door_code on a reservation that contains a given date.

Usage:
  uv run python3 scripts/patch_reservation_codes.py 2026-07-05 --wifi stone-angel-market --door 0472
  uv run python3 scripts/patch_reservation_codes.py 2026-07-05 --wifi new-word-combo --ssid MyNetwork
  uv run python3 scripts/patch_reservation_codes.py 2026-07-05 --door 1234
"""
import argparse
import asyncio
import json
import sys
from datetime import date

from room_cal.store import Calendar, DEFAULT_CALENDAR_NAME
from room_cal._utils import safe_json_loads, filter_events, service_name

_PREFIX = 'Guest: '


def _build_description(xd: dict, wk: str, ws: str | None, dc: str) -> str:
  svc = xd.get('service', '')
  wifi_line = f"WiFi: {ws} / {wk}" if ws else f"WiFi: {wk}"
  return (
    f"Name: {xd.get('guest_name', '')}\n"
    f"Service: {service_name(svc)}\n"
    f"Reservation ID: {xd.get('reservation_id', '')}\n"
    f"Door: {dc}\n"
    f"{wifi_line}"
  )


async def patch(target: date, new_wifi: str | None, new_ssid: str | None, new_door: str | None, calendar_name: str) -> None:
  cal = Calendar(calendar_name)
  events = await cal.fetch_date_range(target, target)
  reservations = filter_events(events, _PREFIX, all_day=False)

  if not reservations:
    print(f"No reservation found overlapping {target}", file=sys.stderr)
    sys.exit(1)

  if len(reservations) > 1:
    reservations.sort(key=lambda e: e['start'])
    event = reservations[-1]
    print(f"Multiple reservations overlap {target}, using the later one ({event['start'].date()} – {event['end'].date()})")
  else:
    event = reservations[0]
  xd = safe_json_loads(event['x_data']) or {}

  old_wifi = xd.get('wifi_key', '(none)')
  old_ssid = xd.get('wifi_ssid')
  old_door = xd.get('door_code', '(none)')

  wk = new_wifi if new_wifi is not None else old_wifi
  ws = new_ssid if new_ssid is not None else old_ssid
  dc = new_door if new_door is not None else old_door

  print(f"Reservation: {event['title']}  ({event['start'].date()} – {event['end'].date()})")
  if new_wifi is not None:
    print(f"  wifi_key:  {old_wifi!r}  →  {wk!r}")
  if new_ssid is not None:
    print(f"  wifi_ssid: {old_ssid!r}  →  {ws!r}")
  if new_door is not None:
    print(f"  door_code: {old_door!r}  →  {dc!r}")

  confirm = input("Apply? [y/N] ").strip().lower()
  if confirm != 'y':
    print("Aborted.")
    return

  xd['wifi_key'] = wk
  xd['wifi_ssid'] = ws
  xd['door_code'] = dc
  new_x_data = json.dumps(xd)
  new_description = _build_description(xd, wk, ws, dc)

  await cal.update_event(event, description=new_description, x_data=new_x_data)
  print("Updated.")


def main():
  parser = argparse.ArgumentParser(description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter)
  parser.add_argument('date', type=date.fromisoformat, help='Any date within the reservation (YYYY-MM-DD)')
  parser.add_argument('--wifi', metavar='WIFI_KEY', help='New wifi_key string')
  parser.add_argument('--ssid', metavar='WIFI_SSID', help='New wifi_ssid string')
  parser.add_argument('--door', metavar='DOOR_CODE', help='New door_code string')
  parser.add_argument('--calendar', default=DEFAULT_CALENDAR_NAME, help=f'Calendar name (default: {DEFAULT_CALENDAR_NAME})')
  args = parser.parse_args()

  if args.wifi is None and args.ssid is None and args.door is None:
    parser.error('Provide at least one of --wifi, --ssid, or --door')

  asyncio.run(patch(args.date, args.wifi, args.ssid, args.door, args.calendar))


if __name__ == '__main__':
  main()