import * as fs from "node:fs";
import * as path from "node:path";

export function writeFileAtomic(filePath: string, content: string) {
  fs.mkdirSync(path.dirname(filePath), { recursive: true });
  const temporary = `${filePath}.${process.pid}.${Date.now()}.tmp`;
  try {
    fs.writeFileSync(temporary, content, { encoding: "utf8", mode: 0o600 });
    fs.renameSync(temporary, filePath);
  } catch (error) {
    try {
      fs.unlinkSync(temporary);
    } catch {}
    throw error;
  }
}