"""Test the switchbot event entities."""

from collections.abc import Callable
from datetime import UTC, datetime, timedelta
from itertools import count
from unittest.mock import patch

import pytest

from homeassistant.components.bluetooth import BluetoothServiceInfoBleak
from homeassistant.components.switchbot.const import DOMAIN
from homeassistant.const import STATE_UNKNOWN
from homeassistant.core import Event, EventStateChangedData, HomeAssistant, callback
from homeassistant.helpers.event import async_track_state_change_event
from homeassistant.setup import async_setup_component

from . import KEYPAD_VISION_PRO_INFO

from tests.common import MockConfigEntry
from tests.components.bluetooth import (
    generate_advertisement_data,
    generate_ble_device,
    inject_bluetooth_service_info,
)


def _with_doorbell_seq(
    info: BluetoothServiceInfoBleak, seq: int = 1
) -> BluetoothServiceInfoBleak:
    """Return a BLE service info with the doorbell seq bits set."""
    mfr_data = bytearray(info.manufacturer_data[2409])
    mfr_data[12] = (mfr_data[12] & 0b11111000) | (seq & 0b00000111)
    updated_mfr_data = {2409: bytes(mfr_data)}
    return BluetoothServiceInfoBleak(
        name=info.name,
        manufacturer_data=updated_mfr_data,
        service_data=info.service_data,
        service_uuids=info.service_uuids,
        address=info.address,
        rssi=info.rssi,
        source=info.source,
        advertisement=generate_advertisement_data(
            local_name=info.name,
            manufacturer_data=updated_mfr_data,
            service_data=info.service_data,
            service_uuids=info.service_uuids,
        ),
        device=generate_ble_device(info.address, info.name),
        time=info.time,
        connectable=info.connectable,
        tx_power=info.tx_power,
    )


@pytest.mark.usefixtures("entity_registry_enabled_by_default")
async def test_keypad_vision_pro_doorbell_event(
    hass: HomeAssistant,
    mock_entry_encrypted_factory: Callable[[str], MockConfigEntry],
) -> None:
    """Test keypad vision pro doorbell event uses doorbell_seq for detection."""
    # Make each ring's timestamp distinct so the entity's state value (which is
    # the iso-formatted timestamp at millisecond resolution) differs between
    # rings, ensuring state_changed fires for each. We avoid the `freezer`
    # fixture here because it patches time.monotonic, which warps loop.time
    # forward and causes the bluetooth manager's pre-scheduled unavailability
    # check to fire immediately and mark the injected device unavailable.
    timestamps = (
        datetime(2026, 1, 1, tzinfo=UTC) + timedelta(seconds=i) for i in count()
    )

    await async_setup_component(hass, DOMAIN, {})
    inject_bluetooth_service_info(hass, KEYPAD_VISION_PRO_INFO)

    entry = mock_entry_encrypted_factory(sensor_type="keypad_vision_pro")
    entry.add_to_hass(hass)

    entity_id = "event.test_name_doorbell"
    ring_states: list[str] = []

    @callback
    def _track_ring(event: Event[EventStateChangedData]) -> None:
        new_state = event.data["new_state"]
        if new_state and new_state.attributes.get("event_type") == "ring":
            ring_states.append(new_state.state)

    with (
        patch(
            "homeassistant.components.switchbot.sensor.switchbot.SwitchbotKeypadVision.update",
            return_value=True,
        ),
        patch(
            "homeassistant.components.event.dt_util.utcnow",
            side_effect=lambda: next(timestamps),
        ),
    ):
        assert await hass.config_entries.async_setup(entry.entry_id)
        await hass.async_block_till_done()

        async_track_state_change_event(hass, entity_id, _track_ring)

        state = hass.states.get(entity_id)
        assert state
        assert state.state == STATE_UNKNOWN

        # First ring: seq changes from 0 → 1
        inject_bluetooth_service_info(
            hass, _with_doorbell_seq(KEYPAD_VISION_PRO_INFO, 1)
        )
        await hass.async_block_till_done()
        assert len(ring_states) == 1

        # Same seq repeated — no new ring event
        inject_bluetooth_service_info(
            hass, _with_doorbell_seq(KEYPAD_VISION_PRO_INFO, 1)
        )
        await hass.async_block_till_done()
        assert len(ring_states) == 1

        # Second ring: seq changes from 1 → 2
        inject_bluetooth_service_info(
            hass, _with_doorbell_seq(KEYPAD_VISION_PRO_INFO, 2)
        )
        await hass.async_block_till_done()
        assert len(ring_states) == 2

        # Seq wraps from 7 → 1 — still a ring
        inject_bluetooth_service_info(
            hass, _with_doorbell_seq(KEYPAD_VISION_PRO_INFO, 7)
        )
        await hass.async_block_till_done()
        assert len(ring_states) == 3

        inject_bluetooth_service_info(
            hass, _with_doorbell_seq(KEYPAD_VISION_PRO_INFO, 1)
        )
        await hass.async_block_till_done()
        assert len(ring_states) == 4