Issuance SDK

import { createChallengeClient, INTERACTION, isInteraction, isOffer } from '@verifiables/eudi-sdk'

const challenge = createChallengeClient({
  apiUrl: 'https://api.verifiables.com',
  headers: { Authorization: 'Bearer oat_your_publishable_key' },
})

let step = await challenge.start({
  issuanceId: 'issuance-id-here',
  // What this page can perform. A flow needing anything else answers
  // `missing_interaction_type` before any state exists.
  capabilities: [INTERACTION.presentation, INTERACTION.select, INTERACTION.twoDDoc],
  // A browser cannot hold a credential: the run ends with an offer a wallet scans.
  sink: 'credential_offer',
})

while (isInteraction(step)) {
  switch (step.type) {
    case INTERACTION.presentation: {
      // Cross-device: show `presentation_url` as a QR, the wallet answers the
      // verifier, then hand the request back as this step's result.
      showQr(step.presentation_url!)
      const status = await challenge.pollPresentation(step.request_id!)
      if (status.status !== 'valid') throw new Error('Presentation failed')
      step = await challenge.answerPresentation(step.auth_session, step.request_id!)
      break
    }
    case INTERACTION.select: {
      // Several records matched the presented identity (a company search).
      const chosen = await askUser(step.options!) // { id, name, address?, city?, postalCode? }
      step = await challenge.answerSelection(step.auth_session, step.token!, chosen.id)
      break
    }
    case INTERACTION.twoDDoc: {
      // step.document_type_name names the expected document; the API reads the barcode.
      step = await challenge.answerDocumentUpload(step.auth_session, step.token!, file)
      break
    }
    default:
      throw new Error(`This page cannot perform ${step.type}`)
  }
}

if (isOffer(step)) {
  showQr(step.credential_offer_uri) // openid-credential-offer://...
  console.log(step.offer_id, step.expires_in)
}

import { ChallengeError } from '@verifiables/eudi-sdk'

try {
  step = await challenge.start({ ... })
} catch (e) {
  if (e instanceof ChallengeError) {
    e.status      // HTTP status
    e.error       // 'issuance_expired' | 'issuance_exhausted' | 'missing_interaction_type' | ...
    e.description // human-readable, when the issuer gave one
    e.missing     // interaction types the page lacks, on missing_interaction_type
  }
}

import { createIssuerClient } from '@verifiables/eudi-sdk'

const issuer = createIssuerClient({ apiUrl: 'https://api.verifiables.com' })

const status = await issuer.pollOfferStatus(step.offer_id, {
  interval: 2000,
  timeout: 120000,
})

if (status.status === 'used') {
  console.log('Credential issued successfully')
}