Thanh Toán Giá Động với Pay What You Want

import DodoPayments from 'dodopayments';

// Initialize the Dodo Payments client
const client = new DodoPayments({
  bearerToken: process.env.DODO_PAYMENTS_API_KEY,
});

async function createDynamicPricingCheckout(
  productId: string,
  amountInCents: number,
  returnUrl: string
) {
  try {
    const session = await client.checkoutSessions.create({
      product_cart: [
        {
          product_id: productId,
          quantity: 1,
          // Dynamic amount in cents (e.g., 1500 = $15.00)
          amount: amountInCents
        }
      ],
      return_url: returnUrl,
      // Optional: Pre-fill customer information
      customer: {
        email: 'customer@example.com',
        name: 'John Doe'
      },
      // Optional: Add metadata for tracking
      metadata: {
        order_id: 'order_123',
        pricing_tier: 'custom'
      }
    });

    console.log('Checkout URL:', session.checkout_url);
    console.log('Session ID:', session.session_id);
    
    return session;
  } catch (error) {
    console.error('Failed to create checkout session:', error);
    throw error;
  }
}

// Example: Create checkout with $25.00 (2500 cents)
const session = await createDynamicPricingCheckout(
  'prod_123abc456def',
  2500, // $25.00 in cents
  'https://yoursite.com/checkout/success'
);

// Example: Create checkout with $10.00 (1000 cents)
const session2 = await createDynamicPricingCheckout(
  'prod_123abc456def',
  1000, // $10.00 in cents
  'https://yoursite.com/checkout/success'
);

async function createCustomerChoiceCheckout(
  productId: string,
  returnUrl: string
) {
  try {
    const session = await client.checkoutSessions.create({
      product_cart: [
        {
          product_id: productId,
          quantity: 1
          // No amount field - customer will choose their price
        }
      ],
      return_url: returnUrl,
      customer: {
        email: 'customer@example.com',
        name: 'John Doe'
      }
    });

    return session;
  } catch (error) {
    console.error('Failed to create checkout session:', error);
    throw error;
  }
}

async function createValidatedCheckout(
  productId: string,
  amountInCents: number,
  minAmount: number,
  maxAmount: number | null
) {
  // Validate minimum
  if (amountInCents < minAmount) {
    throw new Error(
      `Amount ${amountInCents} is below minimum ${minAmount}`
    );
  }
  
  // Validate maximum (if set)
  if (maxAmount !== null && amountInCents > maxAmount) {
    throw new Error(
      `Amount ${amountInCents} exceeds maximum ${maxAmount}`
    );
  }
  
  // Create checkout session
  return await client.checkoutSessions.create({
    product_cart: [
      {
        product_id: productId,
        quantity: 1,
        amount: amountInCents
      }
    ],
    return_url: 'https://yoursite.com/success'
  });
}