migrate to root dir

lib/pipeline/subtitles.ts

@@ -0,0 +1,34 @@
+import * as fs from "fs";
+import * as path from "path";
+
+function toSrtTime(secondsFloat: number): string {
+  const totalMs = Math.max(0, Math.round(secondsFloat * 1000));
+  const hours = Math.floor(totalMs / 3600000);
+  const minutes = Math.floor((totalMs % 3600000) / 60000);
+  const seconds = Math.floor((totalMs % 60000) / 1000);
+  const ms = totalMs % 1000;
+  const pad = (n: number, w: number) => n.toString().padStart(w, "0");
+  return `${pad(hours, 2)}:${pad(minutes, 2)}:${pad(seconds, 2)},${pad(ms, 3)}`;
+}
+
+export function createSrt(storyName: string, chunks: string[], chunkDurations: number[]): string {
+  const srtPath = path.resolve("stories", storyName, "subtitles.srt");
+  let srtContent = "";
+  let currentTime = 0;
+
+  for (let i = 0; i < chunks.length; i++) {
+    const chunk = chunks[i];
+    const duration = chunkDurations[i];
+    const startTime = toSrtTime(currentTime);
+    const endTime = toSrtTime(currentTime + duration);
+
+    srtContent += `${i + 1}\n`;
+    srtContent += `${startTime} --> ${endTime}\n`;
+    srtContent += `${chunk}\n\n`;
+
+    currentTime += duration;
+  }
+
+  fs.writeFileSync(srtPath, srtContent);
+  return srtPath;
+}