SePay Payment

#!/usr/bin/env node /** * Checkout Helper Script * * Generate checkout sessions for both SePay and Polar platforms. * * Usage: * node checkout-helper.js

* * Platforms: sepay, polar * * Environment Variables: * SEPAY_MERCHANT_ID, SEPAY_SECRET_KEY, SEPAY_ENV * POLAR_ACCESS_TOKEN, POLAR_SERVER */ const crypto = require('crypto'); class CheckoutHelper { /** * Generate SePay checkout form fields */ static generateSePayCheckout(config) { const { merchantId, secretKey, orderInvoiceNumber, orderAmount, currency = 'VND', successUrl, errorUrl, cancelUrl, orderDescription, operation = 'PURCHASE' } = config; // Validate required fields const required = ['merchantId', 'secretKey', 'orderInvoiceNumber', 'orderAmount', 'successUrl', 'errorUrl', 'cancelUrl']; for (const field of required) { if (!config[field]) { throw new Error(`Missing required field: ${field}`); } } // Build fields const fields = { merchant_id: merchantId, operation: operation, order_invoice_number: orderInvoiceNumber, order_amount: orderAmount, currency: currency, success_url: successUrl, error_url: errorUrl, cancel_url: cancelUrl, order_description: orderDescription || `Order ${orderInvoiceNumber}`, timestamp: new Date().toISOString() }; // Generate HMAC SHA256 signature const signatureData = Object.keys(fields) .sort() .map(key => `${key}=${fields[key]}`) .join('&'); const signature = crypto .createHmac('sha256', secretKey) .update(signatureData) .digest('hex'); fields.signature = signature; return { fields, formUrl: config.env === 'production' ? 'https://pay.sepay.vn/v1/init' : 'https://sandbox.pay.sepay.vn/v1/init', htmlForm: this.generateHTMLForm(fields, config.env === 'production' ? 'https://pay.sepay.vn/v1/init' : 'https://sandbox.pay.sepay.vn/v1/init') }; } /** * Generate Polar checkout configuration */ static generatePolarCheckout(config) { const { productPriceId, successUrl, externalCustomerId, customerEmail, customerName, discountId, metadata, embedOrigin } = config; // Validate required fields if (!productPriceId) { throw new Error('Missing required field: productPriceId'); } if (!successUrl) { throw new Error('Missing required field: successUrl'); } // Must be absolute URL if (!successUrl.startsWith('http://') && !successUrl.startsWith('https://')) { throw new Error('successUrl must be an absolute URL'); } const checkoutConfig = { product_price_id: productPriceId, success_url: successUrl }; // Add optional fields if (externalCustomerId) checkoutConfig.external_customer_id = externalCustomerId; if (customerEmail) checkoutConfig.customer_email = customerEmail; if (customerName) checkoutConfig.customer_name = customerName; if (discountId) checkoutConfig.discount_id = discountId; if (metadata) checkoutConfig.metadata = metadata; if (embedOrigin) checkoutConfig.embed_origin = embedOrigin; return { config: checkoutConfig, apiEndpoint: config.server === 'sandbox' ? 'https://sandbox-api.polar.sh/v1/checkouts' : 'https://api.polar.sh/v1/checkouts', curlCommand: this.generatePolarCurl(checkoutConfig, config.accessToken, config.server) }; } /** * Generate HTML form for SePay */ static generateHTMLForm(fields, actionUrl) { const inputs = Object.keys(fields) .map(key => ` `) .join('\n'); return ` SePay Payment `.trim(); } /** * Generate cURL command for Polar */ static generatePolarCurl(config, accessToken, server = 'production') { const endpoint = server === 'sandbox' ? 'https://sandbox-api.polar.sh/v1/checkouts' : 'https://api.polar.sh/v1/checkouts'; return `curl -X POST ${endpoint} \\ -H "Authorization: Bearer ${accessToken}" \\ -H "Content-Type: application/json" \\ -d '${JSON.stringify(config, null, 2)}'`; } } // CLI Usage if (require.main === module) { const args = process.argv.slice(2); if (args.length < 2) { console.log('Usage: node checkout-helper.js

'); console.log('\nPlatforms:'); console.log(' sepay - SePay checkout form generation'); console.log(' polar - Polar checkout session configuration'); console.log('\nExamples:'); console.log('\nSePay:'); console.log(' node checkout-helper.js sepay \'{"orderInvoiceNumber":"ORD001","orderAmount":100000,"successUrl":"https://example.com/success","errorUrl":"https://example.com/error","cancelUrl":"https://example.com/cancel"}\''); console.log('\nPolar:'); console.log(' node checkout-helper.js polar \'{"productPriceId":"price_xxx","successUrl":"https://example.com/success","externalCustomerId":"user_123"}\''); process.exit(1); } try { const platform = args[0].toLowerCase(); const config = JSON.parse(args[1]); if (platform === 'sepay') { // Get from environment or config config.merchantId = config.merchantId || process.env.SEPAY_MERCHANT_ID; config.secretKey = config.secretKey || process.env.SEPAY_SECRET_KEY; config.env = config.env || process.env.SEPAY_ENV || 'sandbox'; const result = CheckoutHelper.generateSePayCheckout(config); console.log('✓ SePay Checkout Generated\n'); console.log('Form URL:', result.formUrl); console.log('\nForm Fields:'); console.log(JSON.stringify(result.fields, null, 2)); console.log('\nHTML Form:'); console.log(result.htmlForm); } else if (platform === 'polar') { // Get from environment or config config.accessToken = config.accessToken || process.env.POLAR_ACCESS_TOKEN; config.server = config.server || process.env.POLAR_SERVER || 'production'; if (!config.accessToken) { console.error('✗ Error: POLAR_ACCESS_TOKEN is required'); console.error('Set it via environment variable or in config JSON'); process.exit(1); } const result = CheckoutHelper.generatePolarCheckout(config); console.log('✓ Polar Checkout Configuration Generated\n'); console.log('API Endpoint:', result.apiEndpoint); console.log('\nCheckout Configuration:'); console.log(JSON.stringify(result.config, null, 2)); console.log('\ncURL Command:'); console.log(result.curlCommand); } else { console.error(`✗ Error: Unknown platform '${platform}'`); console.error('Supported platforms: sepay, polar'); process.exit(1); } } catch (error) { console.error('✗ Error:', error.message); process.exit(1); } } module.exports = CheckoutHelper;