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

export function ensureDirForFile(filePath: string): void {
  const dir = path.dirname(filePath);
  fs.mkdirSync(dir, { recursive: true });
}

export function readJsonFile<T>(filePath: string, fallback: T): T {
  if (!fs.existsSync(filePath)) return fallback;
  const raw = fs.readFileSync(filePath, "utf8");
  return JSON.parse(raw) as T;
}

export function writeJsonFile(filePath: string, data: unknown): void {
  ensureDirForFile(filePath);
  fs.writeFileSync(filePath, JSON.stringify(data, null, 2), "utf8");
}