Labelled an opportunity's ID as an OCID only when it is one

web/src/lib/opportunities.test.ts

@@ -7,6 +7,7 @@ import {
   latestRelease,
   mergeOpportunities,
   noticeSite,
+  uuidLabel,
 } from './opportunities';
 import { testOpportunity } from './testOpportunity';
 
@@ -96,3 +97,8 @@ test('a Find a Tender release’s page is its notice', () => {
     'https://www.find-tender.service.gov.uk/notice/095868-2026',
   );
 });
+
+test('an OCID is labelled as one, and other kinds of UUID as an ID', () => {
+  expect(uuidLabel(testOpportunity('ocds-h6vhtk-05a1b2'))).toBe('OCID');
+  expect(uuidLabel(testOpportunity('eusupply-uk-100114954', { uuid_type: 'eusupply' }))).toBe('ID');
+});

web/src/lib/opportunities.ts

@@ -83,3 +83,12 @@ const NOTICE_SITES: Record<string, NoticeSite> = {
 export function noticeSite(opportunity: Opportunity): NoticeSite | undefined {
   return NOTICE_SITES[opportunity.source];
 }
+
+/**
+ * What the opportunity's UUID is called on screen: "OCID" for an OCDS
+ * contracting process's id, and "ID" for the other kinds, such as
+ * eusupply-uk-<tender id>, which the app makes up itself.
+ */
+export function uuidLabel(opportunity: Opportunity): string {
+  return opportunity.uuid_type === 'ocid' ? 'OCID' : 'ID';
+}