import express from "express"
import { createProxyMiddleware } from "http-proxy-middleware"
import next from "next"

const port = process.env.PORT || 8080
const dev = process.env.NODE_ENV !== "production"

let coderV2Host = "http://127.0.0.1:3000"

if (process.env.CODERV2_HOST) {
  if (!/^http(s)?:\/\//.test(process.env.CODERV2_HOST)) {
    throw new Error("CODERV2_HOST must be http(s)")
  } else {
    coderV2Host = process.env.CODERV2_HOST
  }
}

console.log(`Using CODERV2_HOST: ${coderV2Host}`)

const app = next({ dev, dir: "./site" })
const handle = app.getRequestHandler()

app
  .prepare()
  .then(() => {
    const server = express()
    server.use(
      "/api",
      createProxyMiddleware("/api", {
        target: coderV2Host,
        ws: true,
        secure: false,
        changeOrigin: true,
      }),
    )
    server.all("*", (req, res) => handle(req, res))
    server.listen(port)
  })
  .catch((err) => {
    console.error(err)
    process.exit(1)
  })