feat(core): add Electron runtime, services, and app composition

src/core/services/secondary-subtitle.test.ts

@@ -0,0 +1,64 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { SecondarySubMode } from '../../types';
+import { cycleSecondarySubMode } from './subtitle-position';
+
+test('cycleSecondarySubMode cycles and emits broadcast + OSD', () => {
+  let mode: SecondarySubMode = 'hover';
+  let lastToggleAt = 0;
+  const broadcasts: SecondarySubMode[] = [];
+  const osd: string[] = [];
+
+  cycleSecondarySubMode({
+    getSecondarySubMode: () => mode,
+    setSecondarySubMode: (next) => {
+      mode = next;
+    },
+    getLastSecondarySubToggleAtMs: () => lastToggleAt,
+    setLastSecondarySubToggleAtMs: (value) => {
+      lastToggleAt = value;
+    },
+    broadcastSecondarySubMode: (next) => {
+      broadcasts.push(next);
+    },
+    showMpvOsd: (text) => {
+      osd.push(text);
+    },
+    now: () => 1000,
+  });
+
+  assert.equal(mode, 'hidden');
+  assert.deepEqual(broadcasts, ['hidden']);
+  assert.deepEqual(osd, ['Secondary subtitle: hidden']);
+  assert.equal(lastToggleAt, 1000);
+});
+
+test('cycleSecondarySubMode obeys debounce window', () => {
+  let mode: SecondarySubMode = 'visible';
+  let lastToggleAt = 950;
+  let broadcasted = false;
+  let osdShown = false;
+
+  cycleSecondarySubMode({
+    getSecondarySubMode: () => mode,
+    setSecondarySubMode: (next) => {
+      mode = next;
+    },
+    getLastSecondarySubToggleAtMs: () => lastToggleAt,
+    setLastSecondarySubToggleAtMs: (value) => {
+      lastToggleAt = value;
+    },
+    broadcastSecondarySubMode: () => {
+      broadcasted = true;
+    },
+    showMpvOsd: () => {
+      osdShown = true;
+    },
+    now: () => 1000,
+  });
+
+  assert.equal(mode, 'visible');
+  assert.equal(lastToggleAt, 950);
+  assert.equal(broadcasted, false);
+  assert.equal(osdShown, false);
+});