import { randomUUID } from "node:crypto";

export const MEDIA_ROOT = "/data/media";

export function newMediaPath(originalFilename: string, now: Date = new Date()): string {
  const ext = (originalFilename.match(/\.[a-zA-Z0-9]{1,8}$/)?.[0] ?? "").toLowerCase();
  const yyyy = now.getUTCFullYear();
  const mm = String(now.getUTCMonth() + 1).padStart(2, "0");
  return `${yyyy}/${mm}/${randomUUID()}${ext}`;
}

export function absoluteMediaPath(storagePath: string, root: string = MEDIA_ROOT): string {
  if (storagePath.includes("..")) throw new Error("Invalid storage path");
  return `${root}/${storagePath}`;
}