import json
import pytest
from datetime import date, timedelta
from room_cal.user_cal import UserCal
from room_cal._utils import service_name as _service_name

pytestmark = pytest.mark.usefixtures('require_user_cal')


@pytest.mark.asyncio
async def test_set_and_find_services_round_trip():
  """Create a service event, read it back via find_services, then clean up."""
  ucal = UserCal()
  service_key = 'airbnb'
  reservation_id = 'TEST-USERCAL-001'

  scan_start = date.today() - timedelta(days=60)
  checkin = scan_start
  checkout = scan_start + timedelta(days=3)

  try:
    await ucal.set(service_key, reservation_id, checkin, checkout)

    events = await ucal.find_services(checkin, checkout)
    match = next((e for e in events if json.loads(e.x_data).get('reservation_id') == reservation_id), None)
    assert match is not None, "Service event not found after set"

    data = json.loads(match.x_data)
    assert data['service_key'] == service_key
    assert data['reservation_id'] == reservation_id

    assert match.all_day
    assert match.start.date() == checkin
    assert match.end.date() == checkout  # DTEND is exclusive; last included day is checkout - 1

    svc_name = _service_name(service_key)
    assert match.title == svc_name
    assert match.description == f"{svc_name}: {reservation_id}"
  finally:
    events = await ucal.find_services(checkin, checkout)
    for e in events:
      try:
        if json.loads(e.x_data).get('reservation_id') == reservation_id:
          await ucal.delete(e)
      except (ValueError, TypeError):
        pass
    remaining = await ucal.find_services(checkin, checkout)
    leftover = [e for e in remaining if json.loads(e.x_data or '{}').get('reservation_id') == reservation_id]
    assert not leftover, "Service event still present after cleanup"


@pytest.mark.asyncio
async def test_set_is_idempotent():
  """Calling set twice for the same reservation_id updates rather than duplicates."""
  ucal = UserCal()
  service_key = 'airbnb'
  reservation_id = 'TEST-USERCAL-002'

  scan_start = date.today() - timedelta(days=50)
  checkin = scan_start
  checkout = scan_start + timedelta(days=2)

  try:
    await ucal.set(service_key, reservation_id, checkin, checkout)
    await ucal.set(service_key, reservation_id, checkin, checkout)

    events = await ucal.find_services(checkin, checkout)
    matches = [e for e in events if json.loads(e.x_data).get('reservation_id') == reservation_id]
    assert len(matches) == 1, f"Expected 1 event, found {len(matches)}"
  finally:
    events = await ucal.find_services(checkin, checkout)
    for e in events:
      try:
        if json.loads(e.x_data).get('reservation_id') == reservation_id:
          await ucal.delete(e)
      except (ValueError, TypeError):
        pass


@pytest.mark.asyncio
async def test_find_closed_returns_only_room_closed():
  """find_closed only returns events titled 'Room Closed', not service events."""
  ucal = UserCal()
  service_key = 'airbnb'
  reservation_id = 'TEST-USERCAL-003'

  scan_start = date.today() - timedelta(days=40)
  checkin = scan_start
  checkout = scan_start + timedelta(days=2)

  try:
    await ucal.set(service_key, reservation_id, checkin, checkout)

    closed_events = await ucal.find_closed(checkin, checkout)
    assert all(e.title == 'Room Closed' for e in closed_events), \
      "find_closed returned an event that is not titled 'Room Closed'"

    service_events = await ucal.find_services(checkin, checkout)
    titles = {e.title for e in service_events}
    assert 'Room Closed' not in titles, "find_services returned a 'Room Closed' event"
  finally:
    events = await ucal.find_services(checkin, checkout)
    for e in events:
      try:
        if json.loads(e.x_data).get('reservation_id') == reservation_id:
          await ucal.delete(e)
      except (ValueError, TypeError):
        pass