import json

def updateSentNotifications(inboundPlanId):
    with open('SentNotifications.json') as sentNotificationsJSON:
        sentNotifications = json.load(sentNotificationsJSON)

    sentNotifications['sentNotifications'].append(inboundPlanId)

    with open('SentNotifications.json', mode='w') as outputSentNotifications:
        outputSentNotifications.write(json.dumps(sentNotifications, indent=4))

def isInboundShipmentPlanIDInSentNotifications(inboundShipmentPlanId):
    with open('SentNotifications.json') as sentNotificationsJSON:
        sentNotifications = json.load(sentNotificationsJSON)

    if inboundShipmentPlanId in sentNotifications['sentNotifications']:
        return True
    else:
        return False