const DYNAMIC_SCRIPT_ID = 'add-record-script';

async function isDynamicContentScriptRegistered() {
  const scripts = await chrome.scripting.getRegisteredContentScripts();
  return scripts.some((s) => s.id === DYNAMIC_SCRIPT_ID);
}

async function getActiveTab() {
  const [tab] = await chrome.tabs.query({ active: true, lastFocusedWindow: true });
  return tab;
}


document.querySelector('#addRecord').addEventListener('click', async () => {

  console.log('[Demo] ==============================================');
  console.log('[Demo] Test send message from popup script to content script');
  const tab = await getActiveTab();
  const ret = await chrome.tabs.sendMessage(tab.id, { msg: 'ping from popup script', func: 'addRecord' });
  console.log('[Demo] receive', ret);

});


document.querySelector('#deleteRecord').addEventListener('click', async () => {

  console.log('[Demo] ==============================================');
  console.log('[Demo] Test send message from popup script to content script');
  const tab = await getActiveTab();
  const ret = await chrome.tabs.sendMessage(tab.id, { msg: 'ping from popup script', func: 'deleteRecord' });
  console.log('[Demo] receive', ret);

});


var port = null;

function appendMessage(text) {
  document.getElementById('response').innerHTML += "<p>" + text + "</p>";
}

function updateUiState() {
  if (port) {
    document.getElementById('connect-button').style.display = 'none';
    document.getElementById('input-text').style.display = 'block';
    document.getElementById('send-message-button').style.display = 'block';
  } else {
    document.getElementById('connect-button').style.display = 'block';
    document.getElementById('input-text').style.display = 'none';
    document.getElementById('send-message-button').style.display = 'none';
  }
}

function sendNativeMessage() {
  message = { "text": document.getElementById('input-text').value };
  port.postMessage(message);
  appendMessage("Sent message: <b>" + JSON.stringify(message) + "</b>");
}

function onNativeMessage(message) {
  appendMessage("Received message: <b>" + JSON.stringify(message) + "</b>");
}

function onDisconnected() {
  appendMessage("Failed to connect: " + chrome.runtime.lastError.message);
  port = null;
  updateUiState();
}

function connect() {
  var hostName = "com.google.chrome.botext";
  appendMessage("Connecting to native messaging host <b>" + hostName + "</b>")
  port = chrome.runtime.connectNative(hostName);
  port.onMessage.addListener(onNativeMessage);
  port.onDisconnect.addListener(onDisconnected);
  updateUiState();
}

document.addEventListener('DOMContentLoaded', function () {
  document.getElementById('connect-button').addEventListener(
    'click', connect);
  document.getElementById('send-message-button').addEventListener(
    'click', sendNativeMessage);
  updateUiState();
});