import { decode, encode } from 'js-base64'
import { getdata } from 'src/api/api';
import { VlessLink, vmess } from 'src/models/models';
import { is_ip } from './comm';
import { vmessDefault } from 'src/config';

/**
 * 创建直连vmess
 * @param ip 服务器IP地址
 * @returns vmess链接
 */
async function CreatVmessDirect(ip: string): Promise<string> {
  let tmp = ''
  const api = new getdata;
  const obj = JSON.parse(decode(vmessDefault))
  const array = ip.split(/[\s\n]/)
  for (let index = 0; index < array.length; index++) {
    if (!is_ip(array[index])) {
      return ''
    }

    for (let index = 0; index < array.length; index++) {
      const name = await api.get_country(array[index])
      obj.ps = name + array[index]
      obj.add = array[index]
      tmp += 'vmess://' + encode(JSON.stringify(obj)) + '\n'
    }

  }
  return tmp
}

function ChangVmessServer() {
  return 0
}
/**
 *
 * @param type 生成链接的类型 vmess |vless
 */
function CreateLink(type: 'vmess' | 'vless', linkinfo: vmess | VlessLink) {
  let tmp = ''
  switch (true) {
    case type === 'vless':
      if ('uuid' in linkinfo) {
        tmp = createVlessLink(linkinfo)
      }
      break;
    case type === 'vmess':

      break;
    default:
      break;
  }
  return tmp
}

function parseVlessLink(link: string): VlessLink | null {
  const regex = /^vless:/;
  const match = link.match(regex);

  if (!match) {
    console.error('Invalid VLESS link format.');
    return null;
  }

  const uuid = match[1];
  const host = match[2];
  const port = parseInt(match[3], 10);
  const params = parseParams(match[4]); // 解析参数
  const name = match[5] ? decodeURIComponent(match[5].slice(1)) : undefined; // 去掉 "#" 并解码

  return {
    uuid,
    host,
    port,
    params,
    name,
  };
}

function parseParams(paramsString?: string): Record<string, string> | undefined {
  if (!paramsString || !paramsString.startsWith('?')) return undefined;

  return paramsString
    .slice(1) // 去掉开头的 "?"
    .split('&') // 分割每个键值对
    .reduce<Record<string, string>>((acc, pair) => {
      const [key, value] = pair.split('=');
      if (key) acc[key] = value || ''; // 处理可能的无值参数
      return acc;
    }, {});
}

/**
 * 创建vless链接
 * @param param0
 * @returns
 */
function createVlessLink({ uuid, host, port, params, name }: VlessLink): string {
  // 基本的 VLESS 链接格式
  let link = `vless://${uuid}@${host}:${port}\n`;

  // 如果有查询参数，则拼接它们
  if (params && Object.keys(params).length > 0) {
    const queryString = new URLSearchParams(params).toString();
    link += `?${queryString}`;
  }

  // 如果有名称字段，将名称放在 # 后面
  if (name) {
    link += `#${encodeURIComponent(name)}`;
  }

  return link;
}

export { CreatVmessDirect, ChangVmessServer, CreateLink, parseVlessLink }