azuken_unexpected

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• azuken_error, 1 day ago, 13 messages

[vernal forge]

FYI, my payload to create checkout session on my BFF :

    const params: Stripe.Checkout.SessionCreateParams = {
      adaptive_pricing: { enabled: isAdaptivePricingAvailable(cart.country) },
      line_items: cart.lineItems.map((lineItem) => ({
        price_data: {
          currency: lineItem.price.value.currencyCode.toLowerCase(),
          product_data: {
            description: lineItem.variant.attributes?.[0].value.name,
            images: lineItem.variant.images?.map((image) => image.url),
            metadata: {
              cart_line_item_id: lineItem.id,
              product_id: lineItem.productId,
            },
            name: cart?.locale ? lineItem.name[cart.locale] : '-',
          },
          unit_amount: lineItem.totalPrice.centAmount / lineItem.quantity,
        },
        quantity: 1,
      })),
      metadata: {
        cart_id: cart.id,
      },
      mode: 'payment',
      ui_mode: 'custom',
    };

[sharp scaffold]

hey there, taking a look

hmm interesting

Can you tell me more about how/why you're using the metadata set on the server session create in the client side app?

Broadly speaking, we consider metadata to be a server side only structure because it often includes private details you wouldn't want revealed client side

For example when receiving a payment intent client side (before or after payment) you don't get metadata either

[vernal forge]

Hey !

My usage is to update UI, if user is using adaptive pricing, and set the converted prices to line items. As my line items are based on my commerce data (Commercetools), I want to match line items from CT and line items from Stripe, to get the right price

Here is the UI to get a better look at my need

I managed to get the right price by comparing product name, but it's really not ideal (user changes his language, it breaks)

[sharp scaffold]

What exactly are you trying to look up in metadata?

For displaying the line item amounts, I would expect the session line item amounts to also be converted based on the currency selection. Is that not what you're observing?

[vernal forge]

I want to have the line item ID from my e-commerce data (Commercetools), to match with Stripe data

Because I can have both cases : show price from my e-commerce data, if adaptive pricing is not enabled, or show price from Stripe Checkout Session if enabled

I cannot base my line items only on checkout session line items, because of my business cases and rules

[vernal forge]

(you can see my metadata here)

And here is a sample of my cart line item front component:

            <template v-if="addressStore.isAdaptivePricing">
              <UiText class="!text-xl" styled>
                {{ paymentStore.checkoutSession?.lineItems.find((li) => li.name === item.name)?.total.amount }}
                <!-- TODO: replace with li.metadata.cart_line_item_id when lib will provide it -->
              </UiText>
            </template>

This sample is in a loop of my line items in cart entity from Commercetools

If I do not use adaptive pricing, I make my own label with Commercetools amount / currency (with differents cases like discounts, offers, price by quantity etc...)

[sharp scaffold]

Can you say more about this? Because I think this is what you're going to need to do for the time being, barring any other work around we can figure out. Alongside the session id/client secret you could send a trimmed object of the line items array with the line item id and your internal product ID or the same metadata, then your client app would use that as a lookup.

[vernal forge]

We have multiple constraints here:

• We don't have to use adaptive pricing when selected currency is already euro, so we show to user data from ecommerce, and checkout session is just here for payment intent purpose (I've just implemented checkout session, in replacement of classic payment intent flow)
• We are using another provider for Paypal payments, here we don't need to have adaptive too
• We have use cases about promotional offers (from user or from cart), we must adapt UI to show the right final price to user, and these data are not in checkout session info

[sharp scaffold]

In that last case, how are you managing the session payment amounts if you have discounts calculated outside of the session object?

I'm getting the sense that your constraints might be conflicting with the embedded component functionality and you might need to revert to the payment intent + elements integration

[sharp scaffold]

Because i think this approach could help you handle the line item <> internal product ID aspect, but doesnt address the other concerns

[vernal forge]

Final price is calculated on server side, and transmitted to checkout session when I'm creating it. It's mainly a UI issue here.

[vernal forge]

I tried to have both implementations working aside but it was too complicated to maintain properly

[sharp scaffold]

But you can't dictate just the final price for the checkout session, it is calculated from the line items, discounts and tax automatically

[vernal forge]

I think I have no choice but send metadata from session into cart entity

[vernal forge]

Yes, and I send to CS only final price (which is already calculated for the discount part)

[sharp scaffold]

Right, if that unblocks you then i recommend just creating this lookup object and sending it to client side alongside the session secret

You're effectively using checkout session like a payment intent in that case, which is going to come with a bunch of caveats and limitations, since youre not really using the core line item logic etc

But if it gets you the end result you want then great

I think a manual mapping of the lines <> products is where you need to explore next

And hopefully that gets you what you need

[vernal forge]

Indeed, it is mainly constraints from my client needs 😬 payment intent process was easier and cleaner, but they want adaptive pricing with "current behavior" of previously implemented payment intent

Thanks for the tips though!

[sharp scaffold]

Do you want to share your account ID that youre building this with? (acct_123) I can pass it along to the Adaptive Pricing team so that if they have questions about your use case for future functionality they can get in touch.

[vernal forge]

Yes, sure! Here is my account ID : acct_1JaKRZC0v6iyzO0e

[sharp scaffold]

Shared that - thanks!