import { fileURLToPath } from 'node:url';
import { dirname, join, resolve } from 'node:path';
import { readFileSync, readdirSync, existsSync } from 'node:fs';

// 本文件位于 <monorepo>/scripts/lib/paths.mjs → 上溯两级为 monorepo 根
export const ROOT = resolve(dirname(fileURLToPath(import.meta.url)), '..', '..');
export const HOST_PROJECT = join(ROOT, 'YouleNexus');
export const FRAMEWORK_SRC = join(HOST_PROJECT, 'assets', 'framework');
export const GAMES_DIR = join(ROOT, 'games');
export const SEED_DIR = join(ROOT, 'templates', 'game-seed');
export const BUILD_WORKSPACE = join(ROOT, 'build-workspace');

// 子游戏的皮肤覆盖目录
export function gameOverrideDir(projectDir) {
  return join(projectDir, 'assets', 'game', 'override');
}

// 某工程（宿主真源，或实体化后的临时工作区）的 framework/ui 目录。
// check-skin 与 build-game(composeSkin) 共用同一份推导，不各自拼路径（唯一权威）。
export function frameworkUiDirOf(projectDir) {
  return join(projectDir, 'assets', 'framework', 'ui');
}

export const FRAMEWORK_UI_DIR = frameworkUiDirOf(HOST_PROJECT);

export function readCreatorVersion(projectDir) {
  try {
    const pkg = JSON.parse(readFileSync(join(projectDir, 'package.json'), 'utf8'));
    return pkg?.creator?.version ?? null;
  } catch {
    return null;
  }
}

export function listGameProjects(gamesDir = GAMES_DIR) {
  if (!existsSync(gamesDir)) return [];
  return readdirSync(gamesDir, { withFileTypes: true })
    .filter((d) => d.isDirectory())
    .map((d) => join(gamesDir, d.name))
    .filter((dir) => existsSync(join(dir, 'package.json')));
}