Inicio rápido

import { readFile } from 'node:fs/promises'
import {
  createDte, parseCaf, stampDte, loadCertificate,
  signDte, sendToSii, getStatus, DteError,
} from 'dte-sdk'
 
const environment = 'certification'
const issuerRut = '76.123.456-0'
 
async function issueInvoice() {
  const caf = parseCaf(await readFile('./caf/33.xml', 'latin1'))
  const certificate = await loadCertificate(
    await readFile('./certs/signer.pfx'),
    process.env.DTE_CERT_PASSWORD!,
  )
 
  const invoice = createDte({
    type: 33,
    folio: 1024,
    issuer: {
      rut: issuerRut,
      businessName: 'Arrow Software SpA',
      activity: 'Desarrollo de software',
      acteco: 620200,
      address: 'Av. Providencia 1234',
      commune: 'Providencia',
    },
    receiver: {
      rut: '77.654.321-7',
      businessName: 'Comercial Los Andes Ltda.',
      activity: 'Comercio al por menor',
      address: 'Huérfanos 1055',
      commune: 'Santiago',
    },
    items: [{ name: 'Licencia anual', quantity: 1, unitPrice: 120000 }],
  })
 
  const signed = await signDte(stampDte(invoice, caf), certificate)
 
  const { trackId } = await sendToSii(signed, {
    certificate,
    environment,
    senderRut: '15.234.567-4',
    resolution: { number: 0, date: '2026-09-01' },
  })
 
  // The SII answers asynchronously: poll with a growing delay.
  for (let attempt = 1; attempt <= 10; attempt++) {
    const status = await getStatus(trackId, { certificate, environment, issuerRut })
    if (status.state !== 'received') return status
    await new Promise((resolve) => setTimeout(resolve, attempt * 5000))
  }
  throw new Error(`Still processing, check track id ${trackId} later`)
}
 
try {
  const status = await issueInvoice()
  console.log(status.state) // 'accepted'
} catch (error) {
  if (error instanceof DteError) {
    console.error(error.code) // e.g. 'CAF_EXPIRED', never a RUT or an amount
  }
  throw error
}