//const express = require('express')
const express = require('express')
const yargs = require('yargs/yargs')
const { hideBin } = require('yargs/helpers')

const argv = yargs(hideBin(process.argv))
  .option('config', {
    alias: 'c',
    description: 'Configuration file name (without .config.js extension)',
    type: 'string',
    demandOption: true
  })
  .help()
  .argv
const configName = argv.config;
const config = require(`./${argv.config}.config.js`)
const { createProxyMiddleware } = require('http-proxy-middleware')

const app = express();
config.forEach(el => {
  
  const [route, target, addOptions] = el;
  let options = {
    target,
    changeOrigin: true,
    timeout: 10000,
    proxyTimeout: 30000,
    ...addOptions || {},
  };


  if (configName === '127.0.0.1' && route === '/api') {
    options.pathRewrite = { '^/api': '' };
  }

  console.log('route', route, 'target', target);

  app.use(
    route,
    createProxyMiddleware(options),
  )
})

app.use(
  '/',
  createProxyMiddleware({
    target: 'http://localhost:3333',
    changeOrigin: true,
    logLevel: 'debug',
    timeout: 10000,
    proxyTimeout: 30000,
  }),
)

app.listen(4000)
console.log('proxy started on 4000')