[feature request] Add Balance Field to Subscriptions

[jason-son]

Feature Request: Add Balance Field to Subscriptions
Description
Many subscription services, such as phone services, offer prepaid options. To better manage these types of subscriptions, we suggest adding a "Balance" field to subscriptions in Wallos.
Proposed Features

Add a "Balance" field to subscription details
Allow users to manually input and update the balance
Automatically deduct from the balance when subscription payments are made
Send reminders when the balance falls below a certain threshold (e.g., 20%)

Expected Benefits

More accurate tracking of prepaid subscription statuses
Help users top up in time, avoiding service interruptions
Provide a more comprehensive subscription management experience

Possible Implementation

Add a balance field to the subscription table in the database
Add balance display and editing functionality to the UI
Implement logic for automatic balance deduction and reminders

Discussion Points

Should support for balances in different currencies be provided?
How should negative balance situations be handled?
Should an automatic top-up option be offered?

Thank you for considering this suggestion. Please let me know if you need any further information or clarification.