Merchant server makes an API request to the snap backend to get the SNAP_TOKEN
Snap backend responds to the api call with the SNAP_TOKEN
Merchant server constructs the html page and sends it back to the browser
User verifies the details and clicks the pay button. Merchant's javascript code calls snap.pay(SNAP_TOKEN, options). User then fills up the payment details and clicks the confirm button.
Snap JS sends the payment details to the snap backend
Snap backend processes the details and responds with the charge status. Snap JS then calls the corresponding callback provided by the merchant's javascript code.
Snap backend notifies the merchant server about the charge status
