import fs from 'node:fs';
import path from 'node:path';
import { pathToFileURL } from 'node:url';
import { projectRoot } from './load-env.mjs';

export function resolveMemindLib() {
  const bundled = path.join(projectRoot, 'memind-lib');
  const candidates = [
    fs.existsSync(path.join(bundled, 'user-auth.mjs')) ? bundled : null,
    process.env.MEMIND_LIB_ROOT?.trim(),
    path.join(projectRoot, '../test-memind'),
    path.join(projectRoot, '../memind'),
    path.join(projectRoot, '../Memind'),
    path.join(projectRoot, '../tkmind_go/ui/h5'),
  ].filter(Boolean);

  for (const dir of candidates) {
    if (fs.existsSync(path.join(dir, 'user-auth.mjs'))) {
      return path.resolve(dir);
    }
  }

  throw new Error(
    '未找到 Memind 业务模块目录（user-auth.mjs）。请设置 MEMIND_LIB_ROOT，或保持 ../test-memind、../memind、../Memind 其中之一存在。',
  );
}

export async function importMemind(subpath) {
  const libRoot = resolveMemindLib();
  const modulePath = path.join(libRoot, subpath);
  return import(pathToFileURL(modulePath).href);
}