script-hub.js

/*
# Script Hub

You can access this on your phone from:
http://kit.local

Run a script by going to http://kit.local/my-script-name

*/

// Name: Script Hub
// Background: auto

import "@johnlindquist/kit"
import express from "express"
import { Responder } from "@homebridge/ciao"
import detect from "detect-port"
import httpProxy from "http-proxy"

const expressPort = await detect(3000)
const ciaoPort = 80

const app = express()

app.get("/", (req, res) => {
  // You could build a UI here to list all the scripts
  // For example, loop through all the files in kenvPath("scripts")
  // Then click on one to send it to kit.local/my-script-name
  res.send(`<h1>Run a script by going to http://kit.local/my-script-name</h1>`)
})

app.get("/:script", async (req, res) => {
  const script = req.params.script

  const scriptPath = kenvPath("scripts", `${script}.js`)
  const scriptExists = await isFile(scriptPath)

  if (!scriptExists) {
    const message = `Script ${script} does not exist`
    console.log(message)
    res.send(message)
    return
  }

  res.send(`Running script: ${script}`)

  const child = spawn(
    knodePath("bin", "node"),
    [
      "--experimental-loader",
      kitPath("build", "loader.js"),
      kitPath("run", "terminal.js"),
      kenvPath("scripts", `${script}.js`),
    ],
    {
      env: {
        ...process.env,
        NODE_NO_WARNINGS: "1",
        KENV: kenvPath(),
      },
      shell: "/bin/sh",
    }
  )

  child.stdout.on("data", data => {
    console.log(`stdout: ${data}`)
  })

  child.stderr.on("data", data => {
    console.error(`stderr: ${data}`)
  })

  child.on("close", code => {
    console.log(`child process exited with code ${code}`)
  })
})

app.listen(expressPort, () => {
  console.log(`Express server running on http://localhost:${expressPort}`)
})

const proxy = httpProxy.createProxyServer()

const proxyServer = express()

proxyServer.all("*", (req, res) => {
  proxy.web(req, res, { target: `http://localhost:${expressPort}` })
})

proxyServer.listen(ciaoPort, () => {
  console.log(`Proxy running on http://localhost:${ciaoPort}`)
})

const responder = new Responder()

const httpService = responder.createService({
  name: "kit",
  type: "http",
  port: ciaoPort,
})

httpService.advertise()