agentic-ai-engineering/api/checkout.js

99 lines
3.0 KiB
JavaScript

/**
* Stripe Checkout Session API
* Deploy as standalone Node.js server.
*
* Environment: STRIPE_SECRET_KEY, FRONTEND_URL
*/
const http = require('http')
const https = require('https')
const STRIPE_SECRET_KEY = process.env.STRIPE_SECRET_KEY
const FRONTEND_URL = process.env.FRONTEND_URL || 'https://git.fdsa.agency'
const PORT = process.env.PORT || 8787
function createCheckoutSession(priceId, mode, email) {
return new Promise((resolve, reject) => {
const data = new URLSearchParams({
mode: mode || 'payment',
success_url: `${FRONTEND_URL}/checkout/success`,
cancel_url: `${FRONTEND_URL}/checkout/cancel`,
allow_promotion_codes: 'true',
'line_items[0][price]': priceId,
'line_items[0][quantity]': '1',
})
if (email) data.set('customer_email', email)
const options = {
hostname: 'api.stripe.com',
path: '/v1/checkout/sessions',
method: 'POST',
headers: {
'Authorization': `Bearer ${STRIPE_SECRET_KEY}`,
'Content-Type': 'application/x-www-form-urlencoded',
'Content-Length': data.toString().length,
},
}
const req = https.request(options, (res) => {
let body = ''
res.on('data', chunk => body += chunk)
res.on('end', () => {
try { resolve({ status: res.statusCode, body: JSON.parse(body) }) }
catch { resolve({ status: res.statusCode, body: { error: { message: body } } }) }
})
})
req.on('error', reject)
req.write(data.toString())
req.end()
})
}
const server = http.createServer(async (req, res) => {
res.setHeader('Access-Control-Allow-Origin', '*')
res.setHeader('Access-Control-Allow-Methods', 'POST, OPTIONS')
res.setHeader('Access-Control-Allow-Headers', 'Content-Type')
if (req.method === 'OPTIONS') {
res.writeHead(204)
res.end()
return
}
if (req.method !== 'POST') {
res.writeHead(405, { 'Content-Type': 'application/json' })
res.end(JSON.stringify({ error: 'Method not allowed' }))
return
}
if (!STRIPE_SECRET_KEY) {
res.writeHead(500, { 'Content-Type': 'application/json' })
res.end(JSON.stringify({ error: 'Stripe not configured' }))
return
}
let body = ''
req.on('data', chunk => body += chunk)
req.on('end', async () => {
try {
const { price_id, mode, customer_email } = JSON.parse(body)
const result = await createCheckoutSession(price_id, mode, customer_email)
if (result.status === 200) {
res.writeHead(200, { 'Content-Type': 'application/json' })
res.end(JSON.stringify({ url: result.body.url, session_id: result.body.id }))
} else {
res.writeHead(result.status, { 'Content-Type': 'application/json' })
res.end(JSON.stringify({ error: result.body.error?.message || 'Stripe error' }))
}
} catch (e) {
res.writeHead(400, { 'Content-Type': 'application/json' })
res.end(JSON.stringify({ error: e.message }))
}
})
})
server.listen(PORT, () => {
console.log(`Checkout API running on :${PORT}`)
})