def get_open_cases_to_send(clinic_id, zone, last_sync):
"""
Given a list of patients, get the open/updated cases since the last sync
operation. This returns tuples phone_case objects, and flags that say
whether or not they should be created
"""
to_return = []
case_ids = []
# find all relevant cases for the CHW and send them to the phone, unless
# they have already been sent and haven't changed.
potential_case_list = PatientCase.view_with_patient("case/open_for_chw_for_phone", key=[clinic_id, zone])
last_sync_date = datetime.min if not last_sync else last_sync.date
for case in potential_case_list:
# keep a running list of case ids sent down because the phone doesn't
# deal well with duplicates. There shouldn't be duplicates, but they
# can come up with bugs, so arbitrarily only send down the first case
# if there are any duplicates
if case.get_id not in case_ids:
phone_case = PhoneCase.from_bhoma_case(case)
if phone_case is None:
# we don't expect to get into this scenario, but it can happen
# don't fail hard with null reference below
continue
previously_synced = case_previously_synced(phone_case.case_id, last_sync)
if phone_case and phone_case.is_started() and not phone_case.is_over():
# this is an active case, so send it unless it's a duplicate
# or was already synced
if phone_case.case_id in case_ids:
logging.warning("Found a duplicate case for %s. Will not be sent to phone." % phone_case.case_id)
elif previously_synced and phone_case.date_modified < last_sync_date:
logging.debug("Case %s already sent to phone and no changes. Won't be sent again" % phone_case.case_id)
else:
case_ids.append(phone_case.case_id)
to_return.append((phone_case, not previously_synced))
return to_return
def patient_case_xml(request, patient_id):
"""
Case xml for a single patient. This is just a debug method, and as such
ignores the start date flag and always returns the full case xml block
"""
template = \
"""<cases>%s
</cases>"""
return HttpResponse(template % "".join([xml.get_case_xml(PhoneCase.from_bhoma_case(case)) \
for case in cases_for_patient(patient_id)]),
mimetype="text/xml")
