order_schema

```
Order schema
- has_many order_items
- has_many taxes
- has_many fees
- has_many discounts
- id
- timestamps
- print_count (for storing number of times order was printed)
- note - string
- subtotal - price of all selected items without fees and taxes applied
- total_price - price of all selected items with fees and taxes applied
- completed - timestamp. to keep track of how long before an order is fulfilled
- snapshot - json field - stores all relevant data at the time of order

Tax schema
- value - decimal
- percentage - boolean
- name

Fee schema
- value - decimal
- name

Discount schema
- value - decimal
- percentage - boolean
- name

OrderItem schema
- has_one selected_item
- has_many selected_modifiers - must be selected from modifiers of the selected_item
- has_many taxes
- price - store price of selected item with modifiers selected
- note

SelectedItem
- belongs_to item - must be a combo_option or an item_option
- price

SelectedModifier
- belongs_to modifier
- price

Refund schema - should have at least one association. associations here represent the refunded item
- timestamps
- has_many order_items
- has_many selected_items
- has_many selected_modifiers
- has_one order
- reason

Comp - should have at least one comp. comps here represent the comped item
- timestamps
- has_many order_items
- has_many selected_items
- has_many selected_modifiers
- has_one order
- reason
```

If a Refund has_one order, then the whole order is refunded. If a refund has one selected_item, then only that one selected item is refunded. Did it this way instead to avoid columns that would usually be null anyway.

@gjaldon this accounts for multiple partial refunds on a single order too though, right?

@ian-bateman yes, it does. If a Refund has no order association but has at least one selected or order_item or selected_modifier, this will mean partial refund of the order.