"""Integration test fixtures — detect real ESP32 hardware on the serial port."""

from __future__ import annotations

import os

import pytest
import serial

ESP32_PORT = os.environ.get("ESP32_SERIAL_PORT", "/dev/ttyUSB4")


def esp32_available() -> bool:
    """Check if an ESP32 is connected on the expected port."""
    try:
        s = serial.Serial(ESP32_PORT, 115200, timeout=1)
        s.close()
        return True
    except (serial.SerialException, OSError):
        return False


requires_esp32 = pytest.mark.skipif(
    not esp32_available(),
    reason=f"ESP32 not found on {ESP32_PORT}",
)


@pytest.fixture
async def esp32_client():
    """Connected SerialClient fixture -- skips if no hardware."""
    if not esp32_available():
        pytest.skip(f"ESP32 not available on {ESP32_PORT}")

    from mcbluetooth_esp32.serial_client import SerialClient

    client = SerialClient(port=ESP32_PORT)
    await client.connect()
    yield client
    await client.disconnect()