Support POST /create-payment-intent

Interact with Stripe's payment_intents API endpoint.

I'm not committing the index.html that contains client-side code that interacts
with the /create-payment-intent endpoint, but it contains sensitive information,
so I'm omitting it for now.

TL;DR:
- Define POST /create-payment-intent endpoint
- Include envStripeAPIKey in Context record
- Define a top-level Stripe module for making API calls
- Define types and instances that align with Stripes request and response types
- Depend on the Req library: a higher-level library than http-client

1 files changed, 1 insertions, 0 deletions

diff --git a/website/sandbox/learnpianochords/src/server/Main.hs b/website/sandbox/learnpianochords/src/server/Main.hs
index a163c66cda07..228c3363bc59 100644
--- a/website/sandbox/learnpianochords/src/server/Main.hs
+++ b/website/sandbox/learnpianochords/src/server/Main.hs
@@ -18,6 +18,7 @@ getAppContext = do
     Left err -> pure $ Left err
     Right T.Env{..} -> pure $ Right T.Context
       { contextGoogleClientID = envGoogleClientID
+      , contextStripeAPIKey = envStripeAPIKey
       , contextServerPort = envServerPort
       , contextClientPort = envClientPort
       }