require 'sinatra'
require 'stripe'
# This is your test secret API key.
Stripe.api_key = 'sk_test_51Nv15pK1plv04KIBARa3tBigvzWL4A3cFn3sRbb00Y1HDX2y3UZUewJDmUa8d1o3GA1ewOKevFwGexKVprJ7fxQw004BgKKIs9'
set :static, true
set :port, 4242
# Securely calculate the order amount
def calculate_order_amount(_items)
# Replace this constant with a calculation of the order's amount
# Calculate the order total on the server to prevent
# people from directly manipulating the amount on the client
1400
end
# An endpoint to start the payment process
post '/create-payment-intent' do
content_type 'application/json'
data = JSON.parse(request.body.read)
# Create a PaymentIntent with amount and currency
payment_intent = Stripe::PaymentIntent.create(
amount: calculate_order_amount(data['items']),
currency: 'usd',
# In the latest version of the API, specifying the `automatic_payment_methods` parameter is optional because Stripe enables its functionality by default.
automatic_payment_methods: {
enabled: true,
},
)
{
clientSecret: payment_intent.client_secret,
}.to_json
end
