Fix Windows YouTube playback flow and overlay pointer tracking

src/core/services/youtube/playback-resolve.test.ts

@@ -0,0 +1,67 @@
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import test from 'node:test';
+import { resolveYoutubePlaybackUrl } from './playback-resolve';
+
+async function withTempDir<T>(fn: (dir: string) => Promise<T>): Promise<T> {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'subminer-youtube-playback-resolve-'));
+  try {
+    return await fn(dir);
+  } finally {
+    fs.rmSync(dir, { recursive: true, force: true });
+  }
+}
+
+function makeFakeYtDlpScript(dir: string, payload: string): void {
+  const scriptPath = path.join(dir, 'yt-dlp');
+  const script = `#!/usr/bin/env node
+process.stdout.write(${JSON.stringify(payload)});
+`;
+  fs.writeFileSync(scriptPath, script, 'utf8');
+  if (process.platform !== 'win32') {
+    fs.chmodSync(scriptPath, 0o755);
+  }
+  fs.writeFileSync(scriptPath + '.cmd', `@echo off\r\nnode "${scriptPath}"\r\n`, 'utf8');
+}
+
+async function withFakeYtDlp<T>(payload: string, fn: () => Promise<T>): Promise<T> {
+  return await withTempDir(async (root) => {
+    const binDir = path.join(root, 'bin');
+    fs.mkdirSync(binDir, { recursive: true });
+    makeFakeYtDlpScript(binDir, payload);
+    const fakeCommandPath =
+      process.platform === 'win32' ? path.join(binDir, 'yt-dlp.cmd') : path.join(binDir, 'yt-dlp');
+    const originalCommand = process.env.SUBMINER_YTDLP_BIN;
+    process.env.SUBMINER_YTDLP_BIN = fakeCommandPath;
+    try {
+      return await fn();
+    } finally {
+      if (originalCommand === undefined) {
+        delete process.env.SUBMINER_YTDLP_BIN;
+      } else {
+        process.env.SUBMINER_YTDLP_BIN = originalCommand;
+      }
+    }
+  });
+}
+
+test('resolveYoutubePlaybackUrl returns the first playable URL line', async () => {
+  await withFakeYtDlp(
+    '\nhttps://manifest.googlevideo.com/api/manifest/hls_playlist/test\nhttps://ignored.example/video\n',
+    async () => {
+      const result = await resolveYoutubePlaybackUrl('https://www.youtube.com/watch?v=abc123');
+      assert.equal(result, 'https://manifest.googlevideo.com/api/manifest/hls_playlist/test');
+    },
+  );
+});
+
+test('resolveYoutubePlaybackUrl rejects when yt-dlp returns no URL', async () => {
+  await withFakeYtDlp('\n', async () => {
+    await assert.rejects(
+      resolveYoutubePlaybackUrl('https://www.youtube.com/watch?v=abc123'),
+      /returned empty output/,
+    );
+  });
+});