"""Prints every `joy` message, so `dataflow.yml` is self-contained.

It exists so the repo's own dataflow can be validated and run by CI with no
gamepad and no consumer attached. It is not a test of anything: it prints what
arrived and forgets it.
"""

from dora import Node


def main() -> None:
    """Print one line per reading."""
    node = Node("printer")
    count = 0

    for event in node:
        if event["type"] != "INPUT" or event["id"] != "joy":
            continue
        row = event["value"][0].as_py()
        count += 1
        if not row["present"]:
            print(f"joy {count:5d}  no gamepad", flush=True)
            continue
        axes = " ".join(f"{value:+6.3f}" for value in row["axes"])
        held = ",".join(str(index) for index, down in enumerate(row["buttons"]) if down) or "-"
        print(f"joy {count:5d}  axes [{axes}]  buttons [{held}]", flush=True)


if __name__ == "__main__":
    main()