(): collection
||: document
<>: document field
<...[]>: document field list
(users) ↴
|id| ↴
<displayname>
<email>
<phone_number>
<uid>
<stripe_customer_id>
(purchases) ↴
|id| ↴
<created>
<amount>
<currency>
<checkout_session_id>
<lineItems[
<price>
<quantity>
<product>
<product_id>
]>
(products) ↴
|id| ↴
<title>
<description>
<price>
<image>
<file>
<image_small>
<stripe_price_id>
<stripe_product_id>