Mẫu Mã & Ví Dụ

// Invoice Creation with Tax Calculation
const Laabam = require('laabam-sdk');
const laabam = new Laabam(process.env.LAABAM_API_KEY);

async function createInvoiceWithTax() {
  try {
    // Create customer if doesn't exist
    const customer = await laabam.customers.create({
      name: "Acme Corporation",
      email: "billing@acme.com",
      phone: "+91-9876543210",
      gstin: "29ABCDE1234F1Z5"
    });

    // Prepare invoice items
    const items = [
      {
        description: "Professional Services - Month 1",
        quantity: 1,
        rate: 50000,
        tax_rate: 18 // GST 18%
      },
      {
        description: "Consulting Hours",
        quantity: 40,
        rate: 1500,
        tax_rate: 18
      }
    ];

    // Calculate totals
    const subtotal = items.reduce((sum, item) => 
      sum + (item.quantity * item.rate), 0
    );
    const tax = subtotal * 0.18;
    const total = subtotal + tax;

    // Create invoice
    const invoice = await laabam.invoices.create({
      customer_id: customer.id,
      invoice_date: new Date().toISOString().split('T')[0],
      due_date: new Date(Date.now() + 30*24*60*60*1000)
        .toISOString().split('T')[0],
      items: items,
      subtotal: subtotal,
      tax: tax,
      total: total,
      currency: "INR",
      notes: "Payment due within 30 days"
    });

    console.log(`Invoice created: ${invoice.id}`);
    console.log(`Total amount: ₹${total}`);

    // Send invoice via email
    await laabam.invoices.send(invoice.id, {
      to: customer.email,
      subject: `Invoice #${invoice.invoice_number}`,
      message: "Thank you for your business!"
    });

    return invoice;
  } catch (error) {
    console.error('Error creating invoice:', error);
    throw error;
  }
}

createInvoiceWithTax();