def receivers_schedule(request, *args, **kws):
"""
For a given period, specified by a start date and duration, show
all the receiver changes. Receiver changes are aligned with maintenance
days.
"""
# interpret the inputs
startdate = request.GET.get("startdate", None)
startdate = datetime.strptime(startdate, "%Y-%m-%d %H:%M:%S") if startdate else None
duration = request.GET.get("duration", None)
duration = int(duration) if duration else duration
# use the input to get the basic rx schedule
schedule = Receiver_Schedule.extract_schedule(startdate, duration)
jsonschd = Receiver_Schedule.jsondict(schedule)
# some clients also need the diff schedule
diff = Receiver_Schedule.diff_schedule(schedule)
jsondiff = Receiver_Schedule.jsondict_diff(diff).get("diff_schedule", None)
# get the dates for maintenace that cover from the start of this
# rcvr schedule.
maintenance = [
TimeAgent.dt2str(p.start)
for p in Period.objects.filter(session__observing_type__type="maintenance", start__gte=startdate).order_by(
"start"
)
]
# which receivers are temporarily unavailable?
unavailable = [r.jsondict() for r in Receiver.objects.filter(available=False).order_by("freq_low")]
# clients want to also know all the latest rcvrs
rcvrs = [r.jsondict() for r in Receiver.objects.all().order_by("freq_low") if r.abbreviation != "NS"]
return HttpResponse(
json.dumps(
{
"schedule": jsonschd,
"diff": jsondiff,
"maintenance": maintenance,
"unavailable": unavailable,
"receivers": rcvrs,
}
),
mimetype="text/plain",
)
