const baseURLv4 = 'https://4.ipw.cn/';
const baseURLv6 = 'https://6.ipw.cn/';
// ipv6
// curl -6 ifconfig.co
// curl -6 icanhazip.com

// ipv4
// https://api.ipify.org/?format=text
// https://ipinfo.io/ip
import { app } from './app.ts';

app.route({
  path: 'ip',
  key: 'v4',
  description: '获取当前公网IPv4地址',
}).define(async (ctx) => {
  const response = await fetch(baseURLv4);
  const ip = (await response.text()).trim();
  if (!isIpv4(ip)) {
    ctx.throw?.('获取地址失败');
  }
  ctx.body = { ip };
}).addTo(app);

app.route({
  path: 'ip',
  key: 'v6',
  description: '获取当前公网IPv6地址',
}).define(async (ctx) => {
  let ip = ''
  try {
    const response = await fetch(baseURLv6);
    ip = (await response.text()).trim();
  } catch (error) {

  }
  if (!isIpv6(ip)) {
    try {
      const response2 = await fetch('https://ifconfig.co/ip');
      ip = (await response2.text()).trim();
      console.log('尝试第二个接口获取IPv6地址:', ip);
    } catch (error) { }
  }
  if (!isIpv6(ip)) {
    ctx.throw?.('获取地址失败');
  }
  ctx.body = { ip };
}).addTo(app);


export const isIpv6 = (ip: string): boolean => {
  return ip.includes(':');
}

export const isIpv4 = (ip: string): boolean => {
  return ip.split('.').length === 4;
}