Logic for purchasing items in our store

[5witchkr]

We need to implement the logic for purchasing items in our store.
Each item can have multiple types, so we will create an object named "ItemDomain" and include a field to specify the type of item (e.g., "Book", "Course", "Other...").

The purchase logic can be broken down into three processes:

1. Checking the amount of money on hand.
2. Subtracting the purchase amount from the available funds.
3. Adding the purchased item to the character's inventory.

If there are any additional considerations that need to be taken into account, please leave a comment.