fix(ios): use valid Danish TestFlight locale (#222)

Use Apple's supported `da` beta locale and cover the localization/distribution flow with a regression test.

The first signed upload already processed version 1.0.0 build 1 successfully; this fixes the post-processing localization failure before the controlled retry.

scripts/mobile/app-store-connect.mjs

@@ -7,6 +7,7 @@ import { fileURLToPath } from "node:url";
 export const APP_STORE_CONNECT_BASE_URL = "https://api.appstoreconnect.apple.com/v1";
 export const APP_STORE_CONNECT_V2_BASE_URL = "https://api.appstoreconnect.apple.com/v2";
 export const EXPECTED_RELEASE_TYPE = "AFTER_APPROVAL";
+export const TESTFLIGHT_BETA_LOCALE = "da";
 export const EXPECTED_AVAILABLE_TERRITORIES = ["DNK"];
 
 const defaultSleep = (milliseconds) => new Promise((resolvePromise) => setTimeout(resolvePromise, milliseconds));
@@ -198,7 +199,7 @@ export const createAppStoreConnectClient = ({
     const groupId = required("TESTFLIGHT_INTERNAL_GROUP_ID");
     const localizationParams = new URLSearchParams({
       "filter[build]": build.id,
-      "filter[locale]": "da-DK",
+      "filter[locale]": TESTFLIGHT_BETA_LOCALE,
     });
     const localizations = await request(`/betaBuildLocalizations?${localizationParams}`);
     const existingLocalization = (localizations?.data ?? [])[0];
@@ -220,7 +221,7 @@ export const createAppStoreConnectClient = ({
         body: JSON.stringify({
           data: {
             type: "betaBuildLocalizations",
-            attributes: { locale: "da-DK", whatsNew },
+            attributes: { locale: TESTFLIGHT_BETA_LOCALE, whatsNew },
             relationships: { build: { data: { type: "builds", id: build.id } } },
           },
         }),

tests/node/app-store-connect.test.mjs

@@ -5,6 +5,7 @@ import {
   APP_STORE_CONNECT_BASE_URL,
   APP_STORE_CONNECT_V2_BASE_URL,
   EXPECTED_RELEASE_TYPE,
+  TESTFLIGHT_BETA_LOCALE,
   appStoreVersionsPath,
   createAppStoreConnectClient,
 } from "../../scripts/mobile/app-store-connect.mjs";
@@ -280,6 +281,45 @@ test("rejects broader availability, preorder, or automatic future territories",
   );
 });
 
+test("uses Apple's Danish beta locale when localizing and distributing a processed build", async () => {
+  const environment = baseEnvironment({
+    TESTFLIGHT_INTERNAL_GROUP_ID: "internal-qa",
+    TESTFLIGHT_WHAT_TO_TEST: "Test den verificerede build.",
+  });
+  const { client, calls, outputs } = makeClient({
+    environment,
+    handler: (url, options) => {
+      if (url.includes("/builds?")) {
+        return jsonResponse({
+          data: [{ type: "builds", id: "build-8", attributes: { version: "8", processingState: "VALID" } }],
+        });
+      }
+      if (url.includes("/betaBuildLocalizations?")) return jsonResponse({ data: [] });
+      if (url.endsWith("/betaBuildLocalizations") && options.method === "POST") {
+        return jsonResponse({ data: { type: "betaBuildLocalizations", id: "localization-1" } }, 201);
+      }
+      if (url.includes("/betaGroups/internal-qa/relationships/builds?")) return jsonResponse({ data: [] });
+      if (url.endsWith("/betaGroups/internal-qa/relationships/builds") && options.method === "POST") {
+        return jsonResponse(null, 204);
+      }
+      throw new Error(`Unexpected URL ${url}`);
+    },
+  });
+
+  assert.equal(TESTFLIGHT_BETA_LOCALE, "da");
+  assert.equal((await client.waitAndDistribute()).id, "build-8");
+  const localizationLookup = calls.find(({ url }) => url.includes("/betaBuildLocalizations?"));
+  assert.match(localizationLookup.url, /filter%5Blocale%5D=da(?:&|$)/u);
+  const localizationCreate = calls.find(
+    ({ url, options }) => url.endsWith("/betaBuildLocalizations") && options.method === "POST"
+  );
+  assert.deepEqual(JSON.parse(localizationCreate.options.body).data.attributes, {
+    locale: "da",
+    whatsNew: "Test den verificerede build.",
+  });
+  assert.deepEqual(outputs, [["app_store_build_id", "build-8"]]);
+});
+
 test("retries transient responses without exposing the bearer token in errors", async () => {
   const { client, calls, sleeps } = makeClient({
     handler: (_url, _options, attempt) => {