import init, {ludus} from "./rudus.js";

console.log("Worker: starting Ludus VM.")

export function io (out) {
  if (out.length > 0) postMessage(out)
  return new Promise((resolve, _) => {
    onmessage = (e) => {
      console.log(e.data)
      resolve(JSON.stringify(e.data))
    }
  })
}

let loaded_wasm = false

async function run(e) {
  if (!loaded_wasm) {
    await init()
    loaded_wasm = true
  }
  let msgs = e.data
  for (const msg of msgs) {
    if (msg.verb === "run" && typeof msg.data === 'string') {
      console.log("running ludus!")
      onmessage = () => {}
      let result = await ludus(msg.data)
      console.log(result)
      onmessage = run
    } else {
      console.log("Did not get valid startup message. Instead got:")
      console.log(e.data)
    }
  }
}

onmessage = run

console.log("Worker: Ludus VM is running.")