var gateway = `ws://${window.location.hostname}/ws`;
var websocket;

window.addEventListener("load", onLoad);

function initWebSocket() {
  console.log("Trying to open a WebSocket connection...");
  websocket = new WebSocket(gateway);
  websocket.onopen = onOpen;
  websocket.onclose = onClose;
  websocket.onmessage = onMessage; // <-- add this line
}

function initButtons() {
  document
    .getElementById("btn-ws-stop")
    .addEventListener("click", livedebug_stop);
  document
    .getElementById("btn-ws-start")
    .addEventListener("click", livedebug_start);
}

function onOpen(event) {
  console.log("Connection opened");
}

function onClose(event) {
  console.log("Connection closed");
  setTimeout(initWebSocket, 2000);
}

function onMessage(event) {
  var data = event.data;
  if (data.startsWith("DEBUG:")) {
    var addtext = data.slice(6);
    var livedebug_out = document.getElementById("livedebug-out");
    livedebug_out.value += addtext;
    livedebug_out.scrollTop = livedebug_out.scrollHeight;
    do_resize(livedebug_out);
  }
  if (data.startsWith("DTC:")) {
    const dtcs = data.slice(4);
    const dtcArray = dtcs.trim() !== "" ? dtcs.split(";").filter(Boolean) : [];

    if(dtcArray[0] != "0")
    {
      processDTCNotifications(dtcArray);
      fillDTCTable(dtcArray);
    }
    console.log(dtcArray + "\n");
  }
  console.log("ws_msg:" + event.data + "\n");
}

function onLoad(event) {
  initWebSocket();
  initButtons();
}

function livedebug_start() {
  websocket.send("start");
}

function livedebug_stop() {
  websocket.send("stop");
}

function do_resize(textbox) {
  var maxrows = 15;
  var minrows = 3;
  var txt = textbox.value;
  var cols = textbox.cols;

  var arraytxt = txt.split("\n");
  var rows = arraytxt.length;

  for (i = 0; i < arraytxt.length; i++)
    rows += parseInt(arraytxt[i].length / cols);

  if (rows > maxrows) textbox.rows = maxrows;
  else if (rows < minrows) textbox.rows = minrows;
  else textbox.rows = rows;
}