var buttons = document.getElementsByClassName("cta-btn");

var url = new URL(window.location.href);
var clkid = url.searchParams.get("clkid");

if (!clkid) {
  clkid = window.localStorage.getItem("clkid");
}

if (!clkid) {
  clkid = "none";
}

for (let i = 0; i < buttons.length; i++) {
  var clickURL = new URL(buttons[i].getAttribute("href"));

  clickURL.searchParams.append("attributes[clkid]", clkid);
  clickURL.searchParams.append("utm_source", clkid);
  var utm = ["utm_medium", "utm_campaign"];
  utm.forEach((item) => {
    var param = url.searchParams.get(item);
    // if doesn't have, append to url
    if (param && !clickURL.searchParams.get(item)) {
      clickURL.searchParams.append(item, param);
    }
    // if already exists, replace param
    if (param && clickURL.searchParams.get(item)) {
      clickURL.searchParams.set(item, param);
    }
  });
  buttons[i].setAttribute("href", clickURL.href);
}

if (url.searchParams.get("show")) {
  const reveal = document.getElementById("revealProduct");
  if (reveal) {
    reveal.style.removeProperty("display");
  }
}

var img = document.createElement("img");
img.src = `https://webhooks.trousercannon.com/p/image.gif${url.search}`;
img.style = "display: none";
img.referrerPolicy = "unsafe-url";
document.body.appendChild(img);