Hubspot next charge data

Flow:

Scenarios and Expected Behaviour:

1. If a user has multiple yearly subscriptions, the next_charge_data is the closest upcoming charge for the user. If there are two charges happening on the same day, the most expensive charge is passed through to Hubspot.
2. The next_charge_date is one year after the last_transaction's created_at date.
3. If a user upgrades or downgrades their yearly pro_subscription, the next_charge_date is the time of the new subscription's activation