from visca_xu_bridge import parse_visca, visca_frames


def test_visca_split_frames():
    frames, rest = visca_frames(bytes([0x81, 0x01, 0x06, 0x04, 0xFF, 0x81]))
    assert frames == [bytes([0x81, 0x01, 0x06, 0x04, 0xFF])]
    assert rest == bytes([0x81])


def test_visca_stop_and_move():
    stop = parse_visca(bytes([0x81, 0x01, 0x06, 0x01, 0x15, 0x15, 0x03, 0x03, 0xFF]))
    assert stop["action"] == "stop"
    left = parse_visca(bytes([0x81, 0x01, 0x06, 0x01, 0x08, 0x08, 0x01, 0x03, 0xFF]))
    assert left == {"action": "move", "pan": -1.0, "tilt": 0.0, "zoom": 0.0}
    up = parse_visca(bytes([0x81, 0x01, 0x06, 0x01, 0x08, 0x08, 0x03, 0x01, 0xFF]))
    assert up["tilt"] == 1.0


def test_visca_zoom_home_preset():
    assert parse_visca(bytes([0x81, 0x01, 0x04, 0x07, 0x00, 0xFF]))["action"] == "zoom_stop"
    tele = parse_visca(bytes([0x81, 0x01, 0x04, 0x07, 0x27, 0xFF]))
    assert tele == {"action": "zoom", "zoom": 1.0}
    assert parse_visca(bytes([0x81, 0x01, 0x06, 0x04, 0xFF]))["action"] == "home"
    rec = parse_visca(bytes([0x81, 0x01, 0x04, 0x3F, 0x02, 0x01, 0xFF]))
    assert rec == {"action": "preset_recall", "index": 1}