def post(self):
post_data = request.get_json() or request.form
session_id = post_data.get('sessionId')
phone_number = post_data.get('phoneNumber')
user_input = post_data.get('text')
service_code = post_data.get('serviceCode')
if phone_number:
user = get_user_by_phone(phone_number)
# api chains all inputs that came through with *
latest_input = user_input.split('*')[-1]
if None in [user, session_id]:
current_menu = UssdMenu.find_by_name('exit_not_registered')
text = menu_display_text_in_lang(current_menu, user)
else:
current_menu = UssdProcessor.process_request(session_id, latest_input, user)
ussd_session = create_or_update_session(session_id, user, current_menu, user_input, service_code)
text = UssdProcessor.custom_display_text(current_menu, ussd_session)
if "CON" not in text and "END" not in text:
raise Exception("no menu found. text={}, user={}, menu={}, session={}".format(text, user.id, current_menu.name, ussd_session.id))
if len(text) > 164:
print(f"Warning, text has length {len(text)}, display may be truncated")
db.session.commit()
else:
current_menu = UssdMenu.find_by_name('exit_invalid_request')
text = menu_display_text_in_lang(current_menu, None)
return make_response(text), 200
def process_request(session_id: str, user_input: str,
user: User) -> UssdMenu:
session: Optional[UssdSession] = UssdSession.query.filter_by(
session_id=session_id).first()
# returning session
if session:
if user_input == "":
return UssdMenu.find_by_name('exit_invalid_input')
elif user_input == '0':
return UssdMenu.find_by_name(session.state).parent()
else:
new_state = KenyaUssdProcessor.next_state(
session, user_input, user)
return UssdMenu.find_by_name(new_state)
# new session
else:
if user.has_valid_pin():
return UssdMenu.find_by_name('start')
else:
if user.failed_pin_attempts is not None and user.failed_pin_attempts >= 3:
return UssdMenu.find_by_name('exit_pin_blocked')
elif user.preferred_language is None:
return UssdMenu.find_by_name('initial_language_selection')
else:
return UssdMenu.find_by_name('initial_pin_entry')
def post(self):
post_data = request.get_json() or request.form
session_id = post_data.get('sessionId')
phone_number = post_data.get('phoneNumber')
user_input = post_data.get('text')
service_code = post_data.get('serviceCode')
# enforce only one single service code that can access the ussd state machine
# through the endpoint
if config.USSD_VALID_SERVICE_CODE != service_code:
response = 'END '
response += i18n.t(
'ussd.kenya.invalid_service_code',
valid_service_code=config.USSD_VALID_SERVICE_CODE,
locale='sw')
response += "\n"
response += i18n.t(
'ussd.kenya.invalid_service_code',
valid_service_code=config.USSD_VALID_SERVICE_CODE,
locale='en')
return make_response(response, 200)
elif phone_number:
user = get_user_by_phone(phone_number, 'KE')
# api chains all inputs that came through with *
latest_input = user_input.split('*')[-1]
if None in [user, session_id]:
user_without_transfer_account = create_user_without_transfer_account(
phone_number)
current_menu = UssdMenu.find_by_name(
'initial_language_selection')
ussd_session = create_or_update_session(
session_id=session_id,
user=user_without_transfer_account,
user_input=latest_input,
service_code=service_code,
current_menu=current_menu)
text = KenyaUssdProcessor.custom_display_text(
current_menu, ussd_session)
else:
current_menu = KenyaUssdProcessor.process_request(
session_id, latest_input, user)
ussd_session = create_or_update_session(
session_id, user, current_menu, user_input, service_code)
text = KenyaUssdProcessor.custom_display_text(
current_menu, ussd_session)
if "CON" not in text and "END" not in text:
raise Exception(
"no menu found. text={}, user={}, menu={}, session={}".
format(text, user.id, current_menu.name,
ussd_session.id))
if len(text) > 164:
print(
f"Warning, text has length {len(text)}, display may be truncated"
)
db.session.commit()
else:
current_menu = UssdMenu.find_by_name('exit_invalid_request')
text = menu_display_text_in_lang(current_menu, None)
return make_response(text), 200
