t2-mapper/scripts/convert-dif.ts

import fs from "node:fs/promises";
import { execFileSync } from "node:child_process";

const BLENDER_PATH =
  process.env.BLENDER_PATH ||
  `/Applications/Blender.app/Contents/MacOS/Blender`;

/**
 * Find all .dif files in `docs/base` and convert them to glTF.
 * All files are passed to Blender in a single invocation for speed.
 */
async function run() {
  const inputFiles: string[] = [];
  for await (const inFile of fs.glob("docs/base/**/*.dif")) {
    inputFiles.push(inFile);
  }

  if (inputFiles.length === 0) {
    console.log("No .dif files found.");
    return;
  }

  console.log(`Found ${inputFiles.length} .dif file(s) to convert.`);

  execFileSync(
    BLENDER_PATH,
    [
      "--background",
      "--python",
      "scripts/blender/dif2gltf.py",
      "--", // args after here go to the script
      ...inputFiles,
    ],
    { stdio: "inherit" }
  );
}

run();