def validate_config():
if 'config' not in request.form:
return Response(response='There is no config to validate', status=400)
# Preparing what will be returned:
response = {
'errors': [],
'valid': True,
}
# Extract the config from the POST data and parse its JSON contents.
# user_settings will be something like: {"name":"Alice", "lang":"english"}.
user_settings = json.loads(request.form.get('config', {}))
# If the user did not choose a language:
if 'from_station' not in user_settings or user_settings['from_station'] == '':
response['valid'] = False
response['errors'].append('Kies een beginstation.')
# If the user did not fill in the name option:
if 'to_station' not in user_settings or user_settings['to_station'] == '':
response['valid'] = False
response['errors'].append('Kies een eindstation.')
if 'time_slot_begin' not in user_settings or not valid_time(user_settings['time_slot_begin']):
response['valid'] = False
response['errors'].append('Kies een geldige begintijd in de vorm uu:mm.')
if 'time_slot_end' not in user_settings or not valid_time(user_settings['time_slot_end']):
response['valid'] = False
response['errors'].append('Kies een geldige eindtijd in de vorm uu:mm.')
if 'push_offset_minutes' not in user_settings or user_settings['push_offset_minutes'] == '':
user_settings['push_offset_minutes'] = 0
# check push specific settings
if request.form.get('endpoint', '') == '':
response['valid'] = False
response['errors'].append('No Push endpoint was provided.')
if request.form.get('subscription_id', '') == '':
response['valid'] = False
response['errors'].append('No Push subscription_id was provided.')
if response['valid']:
# Assuming the form validates, we store the endpoint, plus this user's
# settings, keyed by their subscription_id.
user_settings['endpoint'] = request.form.get('endpoint')
db().hset('train_delays:subscriptions',
request.form.get('subscription_id'),
json.dumps(user_settings))
return jsonify(**response)
def send_to_printer(subscription_id, delays, user_settings):
content = render_template('edition.html', results=delays,
from_station=user_settings['from_station'],
to_station=user_settings['to_station'])
# check if we have new content
tag = '"%s"' % (
hashlib.md5(
content + dt.datetime.utcnow().strftime('%d%m%Y')
).hexdigest())
stored_tag = db().hget('train_delays:content_tag', subscription_id)
#print "stored: " + stored_content
#print "content: " + content
print "new content %s" % (stored_tag != tag)
if not stored_tag or stored_tag != tag:
db().hset('train_delays:content_tag', subscription_id, tag)
elif stored_tag == tag:
return
print 'DO REQUEST'
# Post this content to BERG Cloud using OAuth.
response, data = client().request(
user_settings['endpoint'],
method='POST',
body=content,
headers={'Content-Type': 'text/html; charset=utf-8'})
print 'RESPONSE STATUS: %d' % response.status
if response.status == '410':
# By sending a 410 status code, BERG Cloud has informed us this
# user has unsubscribed. So delete their subscription from our
# database.
db().hdel('train_delays:subscriptions', subscription_id)
else:
pass
def push_post():
subscribed_count = 0
unsubscribed_count = 0
for subscription_id, config in db().hgetall('train_delays:subscriptions').iteritems():
# config contains the subscriber's language, name and endpoint.
config = json.loads(config)
# Get a random greeting in this subscriber's chosen language.
#greeting = choice(app.config['GREETINGS'][ config['lang'] ])
# Make the HTML content to push to the printer.
content = render_template(
'edition.html')
#greeting="%s, %s" % (greeting, config['name']))
# Post this content to BERG Cloud using OAuth.
response, data = client().request(
config['endpoint'],
method='POST',
body=content,
headers={'Content-Type': 'text/html; charset=utf-8'})
if response.status == '410':
# By sending a 410 status code, BERG Cloud has informed us this
# user has unsubscribed. So delete their subscription from our
# database.
db().hdel('push_example:subscriptions', subscription_id)
unsubscribed_count += 1
else:
subscribed_count += 1
# Show the same form again, with a message to confirm this worked.
return render_template('push.html',
pushed=True,
subscribed_count=subscribed_count,
unsubscribed_count=unsubscribed_count)
def poll_api():
with app.app_context():
api = NSApi(app.config['NS_AUTH_STRING'])
for subscription_id, config in db().hgetall('train_delays:api_queue').iteritems():
user_settings = json.loads(config)
today = dt.datetime.today()
time_slot_begin = dt.datetime.combine(today, dt.datetime.strptime(user_settings['time_slot_begin'], '%H:%M').time())
delays = api.get(user_settings['from_station'], user_settings['to_station'], time_slot_begin)
time_slot_end = dt.datetime.combine(today, dt.datetime.strptime(user_settings['time_slot_end'], '%H:%M').time())
# filter delays to match time frame
delays = [d for d in delays if d['departure_actual'] <= time_slot_end.time()]
if delays:
send_to_printer(subscription_id, delays, user_settings)
def test():
api = NSApi(app.config['NS_AUTH_STRING'])
for subscription_id, config in db().hgetall('train_delays:api_queue').iteritems():
user_settings = json.loads(config)
today = datetime.today()
time_slot_begin = datetime.combine(today, datetime.strptime(user_settings['time_slot_begin'], '%H:%M').time())
delays = api.get(user_settings['from_station'], user_settings['to_station'], time_slot_begin)
time_slot_end = datetime.combine(today, datetime.strptime(user_settings['time_slot_end'], '%H:%M').time())
# filter delays to match time frame
delays = [d for d in delays if d['departure_actual'] <= time_slot_end.time()]
#if delays:
print delays
data = dict(results=delays, from_station=user_settings['from_station'], to_station=user_settings['to_station'])
return render_edition(data)
def check_time_frames():
with app.app_context():
for subscription_id, config in db().hgetall('train_delays:subscriptions').iteritems():
user_settings = json.loads(config)
# create datetime objects
now = dt.datetime.now().time()
time_slot_begin = dt.datetime.strptime(user_settings['time_slot_begin'], '%H:%M').time()
time_slot_end = dt.datetime.strptime(user_settings['time_slot_end'], '%H:%M').time()
# check offset if we need to call api earlier
minutes_delta = dt.timedelta(seconds=int(['push_offset_minutes']) * 60)
offset_time = (dt.datetime.combine(dt.date(1,1,1), time_slot_begin) - minutes_delta).time()
# within timeframe?
if offset_time <= now <= time_slot_end:
# exists already?
if not db().hexists('train_delays:api_queue', subscription_id):
# add to api queue
db().hset('train_delays:api_queue', subscription_id, config)
elif db().hexists('train_delays:api_queue', subscription_id):
# otherwise delete
db().hdel('train_delays:api_queue', subscription_id)