fix(radio): canonicalize priority country aliases before querying

changelog.d/1206-radio-priority-countries.md

@@ -1,5 +1,6 @@
 - Add optional keyless Radio priority-country coverage with up to 40 stations
-  per configured country inside the existing 750-station cap. Country query
+  per configured country inside the existing 750-station cap; the UK alias uses
+  the canonical GB code. Country query
   failures do not block a healthy global catalog. Bound mirror attempts to three
   and retry failed or partial refreshes after 60 seconds on all installations,
   including those without priority countries configured (m3ayush, #1206).

docs/CURRENT-STATE.md

@@ -6315,6 +6315,7 @@ play action; the source does not relay or record streams.
 
 Optional `RADIO_PRIORITY_COUNTRIES` is a server-owned comma-separated list of
 up to eight ISO alpha-2 codes (for example `IN,PL`). Restart after changing it.
+The `UK` alias is canonicalized to `GB` before deduplication and querying.
 It needs no API key and adds no POWER UP entry. An empty list preserves the
 existing global/tag-based directory. Invalid configuration fails at startup.
 

server/providers/radio/catalog.js

@@ -39,12 +39,14 @@ export function parseRadioPriorityCountries(value = '') {
   const entries = Array.isArray(value) ? value : String(value).split(',');
   const countries = [];
   for (const entry of entries) {
-    const code = String(entry).trim().toUpperCase();
-    if (!code) continue;
-    if (!/^[A-Z]{2}$/.test(code) || !normalizeRadioCountryInput(code).valid)
+    const input = String(entry).trim().toUpperCase();
+    if (!input) continue;
+    const normalized = normalizeRadioCountryInput(input);
+    if (!/^[A-Z]{2}$/.test(input) || !normalized.valid)
       throw new TypeError(
         'RADIO_PRIORITY_COUNTRIES requires ISO alpha-2 country codes',
       );
+    const code = normalized.code;
     if (!countries.includes(code)) countries.push(code);
   }
   if (countries.length > PRIORITY_COUNTRY_LIMIT)

src/data/radioProxy.test.mjs

@@ -545,11 +545,39 @@ test('priority-country configuration is bounded, normalized and validated before
   const { parseRadioPriorityCountries } = await import('../../server/providers/radio/catalog.js');
   assert.deepEqual(parseRadioPriorityCountries(' in, PL,in, '), ['IN', 'PL']);
   assert.deepEqual(parseRadioPriorityCountries(''), []);
+  assert.deepEqual(parseRadioPriorityCountries('uk,GB,UK'), ['GB']);
+  assert.deepEqual(parseRadioPriorityCountries('US,CA,IN,PL,DE,FR,UK,GB,JP'), ['US', 'CA', 'IN', 'PL', 'DE', 'FR', 'GB', 'JP']);
   for (const value of ['ZZ', 'India', 'IN&limit=9999', 'US,CA,IN,PL,DE,FR,GB,JP,AU']) {
     assert.throws(() => createProxy({ priorityCountries: value }), /RADIO_PRIORITY_COUNTRIES/);
   }
 });
 
+test('UK aliases query and report GB once and retain British stations', async () => {
+  const countryQueries = [];
+  const middleware = createProxy({
+    priorityCountries: 'UK,GB',
+    fetchImpl: async (url) => {
+      const parsed = new URL(url);
+      if (parsed.pathname === '/json/servers')
+        return responseJson([{ name: 'de1.api.radio-browser.info' }]);
+      const country = parsed.searchParams.get('countrycode');
+      if (country) {
+        countryQueries.push(country);
+        return responseJson([station({ country: 'United Kingdom', countrycode: 'GB' })]);
+      }
+      return responseJson(healthyRowsForQuery(url));
+    },
+  });
+  const response = await invoke(middleware, '/stations');
+  assert.equal(response.status, 200);
+  const body = JSON.parse(response.body);
+  assert.deepEqual(countryQueries, ['GB']);
+  assert.deepEqual(body.coverage.priorityCountries, [
+    { countryCode: 'GB', succeeded: true, stationCount: 1 },
+  ]);
+  assert.equal(body.stations.find((row) => row.id === UUID)?.countryCode, 'GB');
+});
+
 test('low-click country stations survive a full global catalog, with bounded cached queries and deduplication', async () => {
   const calls = [];
   let active = 0;