import path from "path";
import os from "os";
import fs from "fs";

export function defaultWorkspacePath(): string {
  return path.join(os.homedir(), "Layonara Forge");
}

export function detectNwnHome(): string | null {
  const candidates: string[] = [];

  if (process.platform === "win32") {
    const docs = path.join(os.homedir(), "Documents", "Neverwinter Nights");
    candidates.push(docs);
    const steam = path.join(
      "C:",
      "Program Files (x86)",
      "Steam",
      "steamapps",
      "common",
      "Neverwinter Nights",
    );
    candidates.push(steam);
  } else if (process.platform === "darwin") {
    candidates.push(path.join(os.homedir(), "Documents", "Neverwinter Nights"));
    candidates.push(
      path.join(os.homedir(), "Library", "Application Support", "Neverwinter Nights"),
    );
  } else {
    candidates.push(path.join(os.homedir(), ".local", "share", "Neverwinter Nights"));
    candidates.push(
      path.join(os.homedir(), ".steam", "steam", "steamapps", "common", "Neverwinter Nights"),
    );
  }

  for (const candidate of candidates) {
    try {
      if (fs.statSync(candidate).isDirectory()) return candidate;
    } catch {
      continue;
    }
  }
  return null;
}