from asgiref.sync import async_to_sync
from channels.layers import get_channel_layer


async def broadcast_phase_event(session_code: str, event_type: str, payload: dict) -> None:
    """Send a phase event to all WebSocket clients connected to a game session."""
    channel_layer = get_channel_layer()
    group_name = f"game_{session_code.upper()}"
    await channel_layer.group_send(
        group_name,
        {
            "type": "phase_event",
            "payload": {"type": event_type, **payload},
        },
    )


def sync_broadcast_phase_event(session_code: str, event_type: str, payload: dict) -> None:
    """Sync wrapper for calling broadcast_phase_event from synchronous Django views."""
    async_to_sync(broadcast_phase_event)(session_code, event_type, payload)