nfc related support

lib/helpers.js

@@ -1,8 +1,7 @@
 /*!
  * Copyright (c) 2020-2024 Digital Bazaar, Inc. All rights reserved.
  */
-import * as base58 from 'base58-universal';
-import * as base64url from 'base64url-universal';
+import {renderToNfc, supportsNfc} from './nfcRenderer.js';
 import {config} from '@bedrock/web';
 import {
   Ed25519VerificationKey2020
@@ -19,11 +18,6 @@ const supportedSignerTypes = new Map([
   ]
 ]);
 
-const multibaseDecoders = new Map([
-  ['u', base64url],
-  ['z', base58],
-]);
-
 export async function createCapabilities({profileId, request}) {
   // TODO: validate `request`
 
@@ -178,61 +172,11 @@ export async function openFirstPartyWindow(event) {
 export const prettify = obj => JSON.stringify(obj, null, 2);
 
 export async function toNFCPayload({credential}) {
-  const nfcRenderingTemplate2024 = _getNFCRenderingTemplate2024({credential});
-  const bytes = await _decodeMultibase(nfcRenderingTemplate2024.payload);
-  return {bytes};
+  return renderToNfc({credential});
 }
 
 export function hasNFCPayload({credential}) {
-  try {
-    const nfcRenderingTemplate2024 = _getNFCRenderingTemplate2024({credential});
-    if(!nfcRenderingTemplate2024) {
-      return false;
-    }
-
-    return true;
-  } catch(e) {
-    return false;
-  }
-}
-
-function _getNFCRenderingTemplate2024({credential}) {
-  let {renderMethod} = credential;
-  if(!renderMethod) {
-    throw new Error('Credential does not contain "renderMethod".');
-  }
-
-  renderMethod = Array.isArray(renderMethod) ? renderMethod : [renderMethod];
-
-  let nfcRenderingTemplate2024 = null;
-  for(const rm of renderMethod) {
-    if(rm.type === 'NfcRenderingTemplate2024') {
-      nfcRenderingTemplate2024 = rm;
-      break;
-    }
-    continue;
-  }
-
-  if(nfcRenderingTemplate2024 === null) {
-    throw new Error('Credential does not support "NfcRenderingTemplate2024".');
-  }
-
-  if(!nfcRenderingTemplate2024.payload) {
-    throw new Error('NfcRenderingTemplate2024 does not contain "payload".');
-  }
-
-  return nfcRenderingTemplate2024;
-}
-
-async function _decodeMultibase(input) {
-  const multibaseHeader = input[0];
-  const decoder = multibaseDecoders.get(multibaseHeader);
-  if(!decoder) {
-    throw new Error(`Multibase header "${multibaseHeader}" not supported.`);
-  }
-
-  const encodedStr = input.slice(1);
-  return decoder.decode(encodedStr);
+  return supportsNfc({credential});
 }
 
 async function _updateProfileAgentUser({

lib/index.js

@@ -19,13 +19,14 @@ import * as cryptoSuites from './cryptoSuites.js';
 import * as exchanges from './exchanges/index.js';
 import * as helpers from './helpers.js';
 import * as inbox from './inbox.js';
+import * as nfcRenderer from './nfcRenderer.js';
 import * as presentations from './presentations.js';
 import * as users from './users.js';
 import * as validator from './validator.js';
 import * as zcap from './zcap.js';
 export {
   ageCredentialHelpers, capabilities, cryptoSuites, exchanges,
-  helpers, inbox, presentations, users, validator, zcap
+  helpers, inbox, nfcRenderer, presentations, users, validator, zcap
 };
 export {
   getCredentialStore, getProfileEdvClient, initialize, profileManager