from datetime import date, time

import pytest

from custom_components.room_cal_ha.models import OverrideData, ReservationData


# ---------------------------------------------------------------------------
# ReservationData — serialization
# ---------------------------------------------------------------------------

def test_to_dict_serializes_dates_and_times():
  res = ReservationData(
    guest_name="Alice",
    check_in_date=date(2026, 7, 1),
    check_in_time=time(14, 0),
    check_out_date=date(2026, 7, 5),
    check_out_time=time(12, 0),
    wifi_key="abc",
    door_code="1234",
  )
  d = res.to_dict()
  assert d["guest_name"] == "Alice"
  assert d["check_in_date"] == "2026-07-01"
  assert d["check_in_time"] == "14:00:00"
  assert d["check_out_date"] == "2026-07-05"
  assert d["check_out_time"] == "12:00:00"
  assert d["wifi_key"] == "abc"
  assert d["door_code"] == "1234"


def test_to_dict_none_fields_stay_none():
  res = ReservationData(guest_name=None, check_in_date=None, wifi_key=None)
  d = res.to_dict()
  assert d["guest_name"] is None
  assert d["check_in_date"] is None
  assert d["wifi_key"] is None


def test_from_dict_deserializes_iso_strings():
  d = {
    "guest_name": "Bob",
    "check_in_date": "2026-08-01",
    "check_in_time": "15:00:00",
    "check_out_date": "2026-08-04",
    "check_out_time": "11:00:00",
    "wifi_ssid": "Net",
    "wifi_key": "xyz",
    "door_code": "9876",
  }
  res = ReservationData.from_dict(d)
  assert res.guest_name == "Bob"
  assert res.check_in_date == date(2026, 8, 1)
  assert res.check_in_time == time(15, 0)
  assert res.check_out_date == date(2026, 8, 4)
  assert res.check_out_time == time(11, 0)
  assert res.wifi_key == "xyz"
  assert res.door_code == "9876"


def test_from_dict_none_fields():
  d = {
    "guest_name": None,
    "check_in_date": None,
    "check_in_time": None,
    "check_out_date": None,
    "check_out_time": None,
    "wifi_ssid": None,
    "wifi_key": None,
    "door_code": None,
  }
  res = ReservationData.from_dict(d)
  assert res.guest_name is None
  assert res.check_in_date is None
  assert res.check_in_time is None


def test_round_trip():
  original = ReservationData(
    guest_name="Carol",
    check_in_date=date(2026, 9, 10),
    check_in_time=time(14, 30),
    check_out_date=date(2026, 9, 14),
    check_out_time=time(11, 0),
    wifi_ssid="HomeNet",
    wifi_key="pw",
    door_code="0000",
  )
  assert ReservationData.from_dict(original.to_dict()) == original


# ---------------------------------------------------------------------------
# ReservationData — apply_partial
# ---------------------------------------------------------------------------

SAMPLE = ReservationData(
  guest_name="Alice",
  check_in_date=date(2026, 7, 1),
  check_in_time=time(14, 0),
  check_out_date=date(2026, 7, 5),
  check_out_time=time(12, 0),
  wifi_ssid="4114",
  wifi_key="stone",
  door_code="0472",
)


def test_apply_partial_overlays_specified_fields():
  updated = SAMPLE.apply_partial({"wifi_ssid": "GuestNet", "door_code": "9999"})
  assert updated.wifi_ssid == "GuestNet"
  assert updated.door_code == "9999"


def test_apply_partial_leaves_other_fields_unchanged():
  updated = SAMPLE.apply_partial({"door_code": "1111"})
  assert updated.guest_name == "Alice"
  assert updated.check_in_date == date(2026, 7, 1)
  assert updated.wifi_key == "stone"


def test_apply_partial_can_clear_a_field_with_none():
  updated = SAMPLE.apply_partial({"guest_name": None})
  assert updated.guest_name is None


def test_apply_partial_ignores_unknown_keys():
  updated = SAMPLE.apply_partial({"nonexistent_field": "x"})
  assert updated == SAMPLE


def test_apply_partial_empty_dict_returns_equivalent():
  updated = SAMPLE.apply_partial({})
  assert updated == SAMPLE


# ---------------------------------------------------------------------------
# ReservationData — defaults
# ---------------------------------------------------------------------------

def test_default_values():
  res = ReservationData()
  assert res.guest_name is None
  assert res.check_in_date is None
  assert res.check_in_time is None
  assert res.check_out_date is None
  assert res.check_out_time is None
  assert res.wifi_ssid is None
  assert res.wifi_key is None
  assert res.door_code is None


# ---------------------------------------------------------------------------
# OverrideData
# ---------------------------------------------------------------------------

_RES_A = ReservationData(guest_name="Alice")
_RES_B = ReservationData(guest_name="Bob")


def test_override_data_requires_current():
  o = OverrideData(current=_RES_A)
  assert o.current.guest_name == "Alice"


def test_override_data_next_defaults_to_none():
  o = OverrideData(current=_RES_A)
  assert o.next is None


def test_override_data_with_next():
  o = OverrideData(current=_RES_A, next=_RES_B)
  assert o.current.guest_name == "Alice"
  assert o.next.guest_name == "Bob"