214 lines
7.9 KiB
TypeScript
214 lines
7.9 KiB
TypeScript
import { NextRequest, NextResponse } from 'next/server'
|
|
import { cookies } from 'next/headers'
|
|
import pool from '@/lib/db'
|
|
import { getNowPaymentsConfig } from '@/lib/nowpayments'
|
|
|
|
// POST /api/payments/create-invoice - Create a NOWPayments payment
|
|
// Note: Endpoint name kept as "create-invoice" for backward compatibility
|
|
// but it now uses the /v1/payment endpoint instead of /v1/invoice
|
|
export async function POST(request: NextRequest) {
|
|
try {
|
|
// Get buyer_id from session cookie
|
|
const cookieStore = await cookies()
|
|
const buyerIdCookie = cookieStore.get('buyer_id')?.value
|
|
|
|
if (!buyerIdCookie) {
|
|
return NextResponse.json(
|
|
{ error: 'Authentication required' },
|
|
{ status: 401 }
|
|
)
|
|
}
|
|
|
|
const buyer_id = parseInt(buyerIdCookie, 10)
|
|
|
|
const body = await request.json()
|
|
const { drop_id, size, pay_currency } = body
|
|
|
|
// Validate required fields
|
|
if (!drop_id || !size) {
|
|
return NextResponse.json(
|
|
{ error: 'Missing required fields: drop_id, size' },
|
|
{ status: 400 }
|
|
)
|
|
}
|
|
|
|
// Get drop details
|
|
const [dropRows] = await pool.execute(
|
|
'SELECT * FROM drops WHERE id = ?',
|
|
[drop_id]
|
|
)
|
|
const drops = dropRows as any[]
|
|
if (drops.length === 0) {
|
|
return NextResponse.json(
|
|
{ error: 'Drop not found' },
|
|
{ status: 404 }
|
|
)
|
|
}
|
|
|
|
const drop = drops[0]
|
|
|
|
// Get IPN callback URL from environment variable (IPN is handled by external service)
|
|
// This URL is still required for NOWPayments to know where to send payment notifications
|
|
const ipnCallbackUrl = process.env.IPN_CALLBACK_URL
|
|
if (!ipnCallbackUrl) {
|
|
return NextResponse.json(
|
|
{ error: 'IPN_CALLBACK_URL environment variable is required. This should point to your external IPN handler service.' },
|
|
{ status: 500 }
|
|
)
|
|
}
|
|
|
|
// Use transaction to atomically check and reserve inventory
|
|
const connection = await pool.getConnection()
|
|
await connection.beginTransaction()
|
|
|
|
try {
|
|
// Check inventory availability including non-expired pending orders
|
|
// First, clean up expired pending orders
|
|
await connection.execute(
|
|
'DELETE FROM pending_orders WHERE expires_at < NOW()',
|
|
)
|
|
|
|
// Calculate current fill from sales
|
|
const [salesRows] = await connection.execute(
|
|
'SELECT COALESCE(SUM(size), 0) as total_fill FROM sales WHERE drop_id = ?',
|
|
[drop_id]
|
|
)
|
|
const salesData = salesRows as any[]
|
|
const currentFill = salesData[0]?.total_fill || 0
|
|
|
|
// Calculate pending orders (non-expired) that are holding inventory
|
|
const [pendingRows] = await connection.execute(
|
|
'SELECT COALESCE(SUM(size), 0) as total_pending FROM pending_orders WHERE drop_id = ? AND expires_at > NOW()',
|
|
[drop_id]
|
|
)
|
|
const pendingData = pendingRows as any[]
|
|
const pendingFill = pendingData[0]?.total_pending || 0
|
|
console.log(`total fill : ${currentFill} + ${pendingFill} = ${Number(currentFill) + Number(pendingFill)}`)
|
|
// Total reserved = sales + pending orders, ensure both are numbers
|
|
const totalReserved = Number(currentFill) + Number(pendingFill)
|
|
|
|
// Convert fill to the drop's unit for comparison
|
|
let totalReservedInDropUnit = totalReserved
|
|
let sizeInDropUnit = size
|
|
if (drop.unit === 'kg') {
|
|
totalReservedInDropUnit = totalReserved / 1000
|
|
sizeInDropUnit = size / 1000
|
|
}
|
|
|
|
// Check if there's enough remaining inventory
|
|
const remaining = drop.size - totalReservedInDropUnit
|
|
if (sizeInDropUnit > remaining) {
|
|
await connection.rollback()
|
|
connection.release()
|
|
return NextResponse.json(
|
|
{ error: 'Not enough inventory remaining. Item may be on hold by another buyer.' },
|
|
{ status: 400 }
|
|
)
|
|
}
|
|
|
|
// Calculate price
|
|
// ppu is stored as integer where 1000 = $1.00, so divide by 1000 to get actual price
|
|
const pricePerUnit = drop.ppu / 1000
|
|
let priceAmount = 0
|
|
if (drop.unit === 'kg') {
|
|
priceAmount = (size / 1000) * pricePerUnit
|
|
} else {
|
|
priceAmount = size * pricePerUnit
|
|
}
|
|
|
|
// Round to 2 decimal places
|
|
priceAmount = Math.round(priceAmount * 100) / 100
|
|
|
|
// Generate order ID
|
|
const orderId = `SALE-${Date.now()}-${drop_id}-${buyer_id}`
|
|
|
|
// Get base URL for success/cancel redirects
|
|
const baseUrl = process.env.NEXT_PUBLIC_BASE_URL ||
|
|
request.headers.get('origin') ||
|
|
'http://localhost:3420'
|
|
|
|
// Get NOWPayments config (testnet or production)
|
|
const nowPaymentsConfig = getNowPaymentsConfig()
|
|
|
|
// Calculate expiration time (10 minutes from now)
|
|
const expiresAt = new Date()
|
|
expiresAt.setMinutes(expiresAt.getMinutes() + 10)
|
|
|
|
// Create NOWPayments payment
|
|
// Note: Payment API requires pay_currency (crypto currency)
|
|
// Use currency from request, or fall back to env/default
|
|
const payCurrency = pay_currency || process.env.NOWPAYMENTS_PAY_CURRENCY || 'btc'
|
|
|
|
// Optional: Use fixed rate for 20 minutes (prevents rate changes during checkout)
|
|
// If is_fixed_rate is true, payment expires after 20 minutes if not paid
|
|
const isFixedRate = process.env.NOWPAYMENTS_FIXED_RATE === 'true' || false
|
|
|
|
const nowPaymentsResponse = await fetch(`${nowPaymentsConfig.baseUrl}/v1/payment`, {
|
|
method: 'POST',
|
|
headers: {
|
|
'x-api-key': nowPaymentsConfig.apiKey,
|
|
'Content-Type': 'application/json',
|
|
},
|
|
body: JSON.stringify({
|
|
price_amount: priceAmount,
|
|
price_currency: nowPaymentsConfig.currency,
|
|
pay_currency: payCurrency, // Required: crypto currency (btc, eth, etc)
|
|
order_id: orderId,
|
|
order_description: `${drop.item} - ${size}g`,
|
|
ipn_callback_url: ipnCallbackUrl,
|
|
is_fixed_rate: isFixedRate, // Optional: freeze exchange rate for 20 minutes
|
|
}),
|
|
})
|
|
|
|
if (!nowPaymentsResponse.ok) {
|
|
const error = await nowPaymentsResponse.json()
|
|
console.error('NOWPayments error:', error)
|
|
await connection.rollback()
|
|
connection.release()
|
|
return NextResponse.json(
|
|
{ error: 'Failed to create payment', details: error },
|
|
{ status: 500 }
|
|
)
|
|
}
|
|
|
|
const payment = await nowPaymentsResponse.json()
|
|
|
|
// Store pending order with expiration time (atomically reserves inventory)
|
|
// payment.payment_id is the NOWPayments payment ID
|
|
await connection.execute(
|
|
'INSERT INTO pending_orders (payment_id, order_id, drop_id, buyer_id, size, price_amount, price_currency, expires_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?)',
|
|
[payment.payment_id, orderId, drop_id, buyer_id, size, priceAmount, nowPaymentsConfig.currency, expiresAt]
|
|
)
|
|
|
|
// Commit transaction - inventory is now reserved
|
|
await connection.commit()
|
|
connection.release()
|
|
|
|
// Return payment details - sale will be created by external IPN handler when payment is confirmed
|
|
return NextResponse.json({
|
|
payment_id: payment.payment_id,
|
|
payment_status: payment.payment_status,
|
|
pay_address: payment.pay_address, // Address where customer sends payment
|
|
pay_amount: payment.pay_amount, // Amount in crypto to pay
|
|
pay_currency: payment.pay_currency, // Crypto currency
|
|
price_amount: payment.price_amount, // Price in fiat
|
|
price_currency: payment.price_currency, // Fiat currency
|
|
order_id: orderId,
|
|
payin_extra_id: payment.payin_extra_id, // Memo/tag for certain currencies (XRP, XLM, etc)
|
|
expiration_estimate_date: payment.expiration_estimate_date, // When payment expires
|
|
}, { status: 201 })
|
|
} catch (error) {
|
|
await connection.rollback()
|
|
connection.release()
|
|
throw error
|
|
}
|
|
} catch (error) {
|
|
console.error('Error creating payment:', error)
|
|
return NextResponse.json(
|
|
{ error: 'Failed to create payment' },
|
|
{ status: 500 }
|
|
)
|
|
}
|
|
}
|
|
|