import { Context } from 'egg';

module.exports = () => {
  return async function parmsDecode(ctx: Context, next) {

    let clientIp = null;
    if (ctx.header['x-forwarded-for'] && (typeof ctx.header['x-forwarded-for'] == 'string')) {
      clientIp = ctx.header['x-forwarded-for'].split(',')[0];
      console.log('***** xff', clientIp);
    } else {
      clientIp = ctx.header['x-real-ip'] && (typeof ctx.header['x-real-ip'] == 'string'? ctx.header['x-real-ip']: ctx.header['x-real-ip'][0]);
      console.log('***** real', clientIp);
    }
    ctx.clientIp = clientIp||ctx.request.ip;
    console.log('***** clientIp', ctx.clientIp);
    await next();
  };
};