import pytest
from pypylon import pylon

@pytest.fixture(scope="session")
def camera_available():
    """
    Pytest fixture that checks for a connected Basler camera.
    If no camera is found, it skips the tests that depend on this fixture.
    """
    try:
        tl_factory = pylon.TlFactory.GetInstance()
        devices = tl_factory.EnumerateDevices()
        if not devices:
            pytest.skip("No Basler camera found. Skipping tests that require a camera.")
        
        # You can also add a photo capture test here if you want
        # For now, just detecting the camera is enough
        
    except Exception as e:
        pytest.fail(f"An error occurred during camera detection: {e}")