import { coss } from '@coss';

coss.payments.init({
  apiKey: process.env.COSS_KEY,
  environment: 'production', // or 'sandbox'
});

// Create a product
await coss.payments.products.create({
  name: 'Pro Plan',
  description: 'Access to premium features',
});

// List products
await coss.payments.products.list();

// Retrieve a product
await coss.payments.products.retrieve('prod_abc123');

// Update a product
await coss.payments.products.update('prod_abc123', {
  description: 'Updated description',
});

// Delete a product
await coss.payments.products.delete('prod_abc123');

// Create a price for a product
await coss.payments.prices.create({
  productId: 'prod_abc123',
  unitAmount: 2000, // in cents
  currency: 'usd',
  recurring: { interval: 'month' },
});

// List prices
await coss.payments.prices.list();

// Create a customer
await coss.payments.customers.create({
  email: 'jane@example.com',
  name: 'Jane Doe',
});

// Retrieve a customer
await coss.payments.customers.retrieve('cus_abc123');

// Create a subscription
await coss.payments.subscriptions.create({
  customerId: 'cus_abc123',
  priceId: 'price_abc123',
});

// Retrieve a subscription
await coss.payments.subscriptions.retrieve('sub_abc123');

// Update a subscription (e.g., upgrade plan)
await coss.payments.subscriptions.update('sub_abc123', {
  priceId: 'price_def456',
});

// Cancel a subscription
await coss.payments.subscriptions.cancel('sub_abc123');

// Create an invoice manually
await coss.payments.invoices.create({
  customerId: 'cus_abc123',
  items: [
    { priceId: 'price_abc123', quantity: 1 },
  ],
});

// Finalize and send the invoice
await coss.payments.invoices.finalize('inv_abc123');

// Pay an invoice
await coss.payments.invoices.pay('inv_abc123');

// Webhook events
coss.payments.webhooks.on('invoice.paid', (event) => {
  console.log('Invoice paid:', event.data);
});

coss.payments.webhooks.on('subscription.created', (event) => {
  console.log('Subscription created:', event.data);
});

// Validate webhook signature
const isValid = coss.payments.utils.verifySignature({
  payload: req.body,
  signature: req.headers['coss-payments-signature'],
  secret: 'whsec_payments_123',
});