var isDebugMode = false;
function log(...messages) {
  if (isDebugMode) {
    console.log(JSON.stringify(messages));
  }
}

(function () {
  // Function to load a script

  function loadScript(url, callback) {
    var script = document.createElement("script");
    script.type = "text/javascript";
    script["data-token"] = dataToken;

    if (script.readyState) {
      // only required for IE <9
      script.onreadystatechange = function () {
        if (script.readyState == "loaded" || script.readyState == "complete") {
          script.onreadystatechange = null;
          callback();
        }
      };
    } else {
      //Others
      script.onload = function () {
        callback();
      };
    }

    script.src = url;
    document.getElementsByTagName("head")[0].appendChild(script);
  }

  // Get the version from the script tag
  var myScript = document.getElementById("MavaWebChat");
  var version = myScript.getAttribute("widget-version");
  var source = myScript.getAttribute("src");
  var enableSDK = myScript.getAttribute("enable-sdk");
  var dataToken = myScript.getAttribute("data-token");
  var delayLoad = myScript.getAttribute("delay-load");
  var debugSetting = myScript.getAttribute("debug-mode");
  if (debugSetting) {
    isDebugMode = debugSetting !== "false" ? true : false;
  } else {
    isDebugMode = false;
  }
  var script = document.createElement("script");
  script.type = "text/javascript";
  script.text = `
  var isDebugMode = ${isDebugMode};
  var log = ${log.toString()};
  `;
  log("Debug mode: " + isDebugMode);
  log("Initializing widget loader");
  var isLocal = false;
  var origin;
  try {
    origin = new URL(source).origin;
  } catch (e) {
    log(e);
    log("Local widget");
    isLocal = true;
  }
  log("Widget version: ", version, " Origin: ", origin, " Local: ", isLocal);
  // Load the appropriate version of the widget

  if (isLocal) {
    loadScript(`../${version}/index.ts`, function () {
      log("Widget version " + version + " loaded");
    });
    return;
  }
  if (enableSDK && enableSDK === "true") {
    log("Loading SDK");
    loadScript(
      `${origin || "https://widget.koia.dev"}/sdk.js`,
      function () {
        log("SDK loaded");
      },
      dataToken
    );
  }
  var newEvent = new Event("loadMavaWebchat");
  if (isLocal) {
    loadScript("../src/index.ts", function () {
      log("Widget local version " + version + " loaded");
      if (delayLoad !== "true") {
        log("Dispatching loadMavaWebChat event");
        window.dispatchEvent(newEvent);
      }
    });
    return;
  }
  if (version) {
    log("Loading version " + version);
    loadScript(`${origin}/${version}.js`, function () {
      log("Widget version " + version + " loaded");
      if (delayLoad !== "true") {
        log("Dispatching loadMavaWebChat event");
        window.dispatchEvent(newEvent);
      }
    });
  } else {
    // Load the default version if the specified version is not found
    loadScript(`${origin}/v1.js`, function () {
      log("Default widget version loaded");
    });
  }
})();