feat: implement Stripe checkout integration and add related API endpoints

server/api/checkout.session.post.ts

@@ -0,0 +1,62 @@
+import Stripe from 'stripe'
+
+export default defineEventHandler(async (event) => {
+  const config = useRuntimeConfig()
+  const stripeSecretKey = config.stripeSecretKey
+
+  if (!stripeSecretKey) {
+    throw createError({ statusCode: 500, statusMessage: 'Stripe secret key not configured' })
+  }
+
+  const stripe = new Stripe(stripeSecretKey, {
+    apiVersion: '2024-10-28.acacia',
+  })
+
+  const body = await readBody<{
+    designId: string
+    templateId?: string
+    designName?: string
+    amount: number
+    currency?: string
+    successUrl: string
+    cancelUrl: string
+    customerEmail?: string
+  }>(event)
+
+  if (!body?.designId || !body?.amount || !body?.successUrl || !body?.cancelUrl) {
+    throw createError({ statusCode: 400, statusMessage: 'Missing required fields' })
+  }
+
+  const { currency = 'usd' } = body
+
+  const session = await stripe.checkout.sessions.create({
+    mode: 'payment',
+    payment_method_types: ['card'],
+    billing_address_collection: 'auto',
+    customer_email: body.customerEmail,
+    line_items: [
+      {
+        quantity: 1,
+        price_data: {
+          currency,
+          unit_amount: Math.round(body.amount * 100),
+          product_data: {
+            name: body.designName ?? `Slipmat design ${body.designId}`,
+            metadata: {
+              designId: body.designId,
+              ...(body.templateId ? { templateId: body.templateId } : {}),
+            },
+          },
+        },
+      },
+    ],
+    metadata: {
+      designId: body.designId,
+      ...(body.templateId ? { templateId: body.templateId } : {}),
+    },
+    success_url: body.successUrl,
+    cancel_url: body.cancelUrl,
+  })
+
+  return { id: session.id, url: session.url }
+})

server/api/transactions.post.ts

@@ -0,0 +1,36 @@
+export default defineEventHandler(async (event) => {
+  const body = await readBody<{
+    stripeSessionId: string
+    designId: string
+    templateId?: string
+    amount: number
+    currency: string
+    customerEmail?: string
+    assets?: {
+      previewUrl?: string
+      productionUrl?: string
+    }
+  }>(event)
+
+  if (!body?.stripeSessionId || !body?.designId) {
+    throw createError({ statusCode: 400, statusMessage: 'Missing required fields' })
+  }
+
+  // TODO: Persist the transaction to your database of choice.
+  // Example shape:
+  // await db.transaction.create({
+  //   stripeSessionId: body.stripeSessionId,
+  //   designId: body.designId,
+  //   templateId: body.templateId,
+  //   amount: body.amount,
+  //   currency: body.currency,
+  //   customerEmail: body.customerEmail,
+  //   previewUrl: body.assets?.previewUrl,
+  //   productionUrl: body.assets?.productionUrl,
+  // })
+
+  return {
+    ok: true,
+    receivedAt: new Date().toISOString(),
+  }
+})