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 }
})