// flashmind-commerce / src / checkout / webpay.ts
            

               
            

              import { Webpay } from '@transbank/sdk'
            

              import { logger } from '../infra/observability'
            

               
            

              export async function createCheckout(order: Order) {
            

                const tx = await Webpay.create({
            

                  amount: order.total,
            

                  buyOrder: `ORD-${order.id}`,
            

                  returnUrl: env.CHECKOUT_CALLBACK
            

                })
            

               
            

                logger.info('checkout.created', { orderId: order.id })
            

                return { url: tx.url, token: tx.token }
            

              }
            

               
            

              // → 200 OK · 42ms · sa-east-1
            

              // orders.today = 47 · revenue = $2.480.500
            

               
            

              export async function applyCoupon(code: string, cart: Cart) {
            

                const coupon = await db.coupons.find(code)
            

                if (antiAbuse.blocks(cart.email, cart.ip)) return null
            

                return discount(cart, coupon)
            

              }
            

               
            

              // shipping / starken.ts
            

              export async function quoteStarken(zone: Zone, kg: number) {
            

                return starken.quote({ origin: 'RM-01', zone, kg })
            

              }