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from datetime import datetime
from aprslib.packets.base import APRSPacket
from aprslib.util import latitude_to_ddm, longitude_to_ddm, comment_altitude
class PositionReport(APRSPacket):
format = 'uncompressed'
_latitude = 0
@property
def latitude(self):
return self._latitude
@latitude.setter
def latitude(self, val):
if -90 <= val <= 90:
self._latitude = val
else:
raise ValueError("Latitude outside of -90 to 90 degree range")
_longitude = 0
@property
def longitude(self):
return self._longitude
@longitude.setter
def longitude(self, val):
if -180 <= val <= 180:
self._longitude = val
else:
raise ValueError("Longitude outside of -180 to 180 degree range")
symbol_table = '/'
symbol = 'l'
altitude = None
timestamp = None
comment = ''
def _serialize_body(self):
if self.timestamp is None:
timestamp = ''
elif isinstance(self.timestamp, str):
timestamp = self.timestamp
else:
timestamp = datetime.utcfromtimestamp(self.timestamp).strftime("%d%H%M") + 'z'
body = [
'/' if self.timestamp else '!', # packet type
timestamp,
latitude_to_ddm(self.latitude),
self.symbol_table,
longitude_to_ddm(self.longitude),
self.symbol,
comment_altitude(self.altitude) if self.altitude is not None else '',
self.comment,
]
return "".join(body)
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