Apply remaining working-tree updates

src/subsync/utils.test.ts

@@ -1,34 +1,14 @@
 import test from "node:test";
 import assert from "node:assert/strict";
-import * as fs from "fs";
-import * as os from "os";
-import * as path from "path";
-import { getSubsyncConfig, runCommand } from "./utils";
+import { codecToExtension } from "./utils";
 
-test("getSubsyncConfig applies fallback executable paths for blank values", () => {
-  const config = getSubsyncConfig({
-    defaultMode: "manual",
-    alass_path: " ",
-    ffsubsync_path: "",
-    ffmpeg_path: undefined,
-  });
-
-  assert.equal(config.defaultMode, "manual");
-  assert.equal(config.alassPath, "/usr/bin/alass");
-  assert.equal(config.ffsubsyncPath, "/usr/bin/ffsubsync");
-  assert.equal(config.ffmpegPath, "/usr/bin/ffmpeg");
+test("codecToExtension maps stream/web formats to ffmpeg extractable extensions", () => {
+  assert.equal(codecToExtension("subrip"), "srt");
+  assert.equal(codecToExtension("webvtt"), "vtt");
+  assert.equal(codecToExtension("vtt"), "vtt");
+  assert.equal(codecToExtension("ttml"), "ttml");
 });
 
-test("runCommand returns failure on timeout", async () => {
-  const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "subsync-utils-"));
-  const sleeperPath = path.join(tmpDir, "sleeper.sh");
-  fs.writeFileSync(sleeperPath, "#!/bin/sh\nsleep 2\n", {
-    encoding: "utf8",
-    mode: 0o755,
-  });
-  fs.chmodSync(sleeperPath, 0o755);
-
-  const result = await runCommand(sleeperPath, [], 50);
-
-  assert.equal(result.ok, false);
+test("codecToExtension returns null for unsupported codecs", () => {
+  assert.equal(codecToExtension("unsupported-codec"), null);
 });

src/subsync/utils.ts

@@ -101,8 +101,16 @@ export function getTrackById(
 export function codecToExtension(codec: string | undefined): string | null {
   if (!codec) return null;
   const normalized = codec.toLowerCase();
-  if (normalized === "subrip" || normalized === "srt") return "srt";
+  if (
+    normalized === "subrip" ||
+    normalized === "srt" ||
+    normalized === "text" ||
+    normalized === "mov_text"
+  )
+    return "srt";
   if (normalized === "ass" || normalized === "ssa") return "ass";
+  if (normalized === "webvtt" || normalized === "vtt") return "vtt";
+  if (normalized === "ttml") return "ttml";
   return null;
 }