import { memoize } from 'lodash';
import path from 'path';
import request from '../../../utils/request';

export function guid() {
  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
    const r = (Math.random() * 16) | 0,
      v = c == 'x' ? r : (r & 0x3) | 0x8;
    return v.toString(16);
  });
}

/* eslint-disable no-irregular-whitespace */

interface SpaceConfig {
  privateKey: string;
}

async function requestServerSecret(appId: string, spaceId: string): Promise<string> {
  const { privateKey } = await request<SpaceConfig>({
    method: 'GET',
    host: 'ide',
    path: '/cli/cloud/space/config.json',
    needSign: true,
    data: {
      appId,
      spaceId,
    },
  }).catch((e) => {
    // 接口出错，删除对应缓存
    getServerSecret.cache.delete(appId + spaceId);

    return Promise.reject(e);
  });

  const list = privateKey.split('\\n');

  return `${list[0]}
${list[1]}
${list[2]}`;
}

// 第二个参数设置缓存key
export const getServerSecret = memoize(requestServerSecret, function (...args) {
  return args.join('');
});

export async function requireLocalFunction(functionRootPath, name) {
  const entry = path.join(functionRootPath, name, 'index.js');
  // 用户的require模块会缓存
  // eslint-disable-next-line
  const fn = require(entry);

  if (!fn || (typeof fn !== 'function' && typeof fn.default !== 'function')) {
    throw new Error('入口函数必须为 module.exports');
  }

  return typeof fn === 'function' ? fn : fn.default;
}