const express = require('express');
const webpack = require('webpack');
const middleware = require('webpack-dev-middleware');
const proxy = require('koa-better-http-proxy');
const url = require('url');
const devConfig = require('../webpack.config');

const compiler = webpack(devConfig);

module.exports = {
  entry(app, router, opts) {
    app.use(proxy('http://localhost:5001', {
      filter(ctx) {
        return /\/build/.test(url.parse(ctx.url).path);
      },
      proxyReqPathResolver(ctx) {
        return `client${url.parse(ctx.url).path}`;
      },
    }));

    app.use(proxy('http://localhost:5001', {
      filter(ctx) {
        return /\/$/.test(url.parse(ctx.url).path);
      },
      proxyReqPathResolver(ctx) {
        return 'client/build/index.html';
      },
    }));

    const server = express();
    server.use(middleware(compiler));
    // server.use(require("webpack-hot-middleware")(compiler));
    server.listen('5001', (err) => {
      if (err) {
        console.log(err);
      }
    });
  },
};