refactor(youtube): extract subtitle generation pipeline

launcher/youtube/orchestrator.test.ts

@@ -0,0 +1,58 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+import { planYoutubeSubtitleGeneration } from './orchestrator';
+
+test('planYoutubeSubtitleGeneration prefers manual subtitles and never schedules auto-subs', () => {
+  assert.deepEqual(
+    planYoutubeSubtitleGeneration({
+      hasPrimaryManualSubtitle: true,
+      hasSecondaryManualSubtitle: false,
+      secondaryCanTranslate: true,
+    }),
+    {
+      fetchManualSubtitles: true,
+      fetchAutoSubtitles: false,
+      publishPrimaryManualSubtitle: false,
+      publishSecondaryManualSubtitle: false,
+      generatePrimarySubtitle: false,
+      generateSecondarySubtitle: true,
+    },
+  );
+});
+
+test('planYoutubeSubtitleGeneration generates only missing tracks', () => {
+  assert.deepEqual(
+    planYoutubeSubtitleGeneration({
+      hasPrimaryManualSubtitle: false,
+      hasSecondaryManualSubtitle: true,
+      secondaryCanTranslate: true,
+    }),
+    {
+      fetchManualSubtitles: true,
+      fetchAutoSubtitles: false,
+      publishPrimaryManualSubtitle: false,
+      publishSecondaryManualSubtitle: false,
+      generatePrimarySubtitle: true,
+      generateSecondarySubtitle: false,
+    },
+  );
+});
+
+test('planYoutubeSubtitleGeneration reuses manual tracks already present on the YouTube video', () => {
+  assert.deepEqual(
+    planYoutubeSubtitleGeneration({
+      hasPrimaryManualSubtitle: true,
+      hasSecondaryManualSubtitle: true,
+      secondaryCanTranslate: true,
+    }),
+    {
+      fetchManualSubtitles: true,
+      fetchAutoSubtitles: false,
+      publishPrimaryManualSubtitle: false,
+      publishSecondaryManualSubtitle: false,
+      generatePrimarySubtitle: false,
+      generateSecondarySubtitle: false,
+    },
+  );
+});