import ctypes
from ..datatypes.radar_common import RdrOperationalSettings, Frequency
# Importare altri datatypes necessari (Beacon, ACIdentifier...)

class MsgA1Payload(ctypes.Structure):
    """
    Payload structure for Message A1: Radar Operational Settings.
    OLD implementation size: 22 bytes
    Fields: settings(2) + frequency(2) + beacon(2) + rf_channels(2) + 
            ac_identifier(2) + date(2) + time(2) + param_id(2) + param_value(4)
    """
    _pack_ = 1
    _fields_ = [
        ("settings", RdrOperationalSettings),           # 2 bytes
        ("frequency", ctypes.c_uint32),                 # 4 bytes (OLD uses 4 bytes for Frequency!)  
        ("beacon", ctypes.c_uint16),                    # 2 bytes
        ("rf_channels_grouping", ctypes.c_uint16),     # 2 bytes
        ("ac_identifier", ctypes.c_uint16),            # 2 bytes
        ("date_of_mission", ctypes.c_uint16),          # 2 bytes
        ("time_of_mission", ctypes.c_uint16),          # 2 bytes
        ("param_id", ctypes.c_uint16),                 # 2 bytes
        ("param_value", ctypes.c_uint32),              # 4 bytes
    ]  # Total: 22 bytes

# Nota: Non definiamo la classe "A1" qui che eredita da BaseMessage.
# Quella la instanzieremo nel Core o in un file di configurazione missione.