export default function () {

  clickFilter("all")

  var links = document.getElementsByClassName("button-link");


  document.querySelectorAll('.button-link').forEach(item => {
    let v = item.getAttribute('id');
    item.addEventListener('click', (event => {
      event.preventDefault();
      clickFilter(v);
    }))
  })


  function clickFilter(c) {
    var x, i;
    x = document.getElementsByClassName("settingRow");
    if (c == "all") c = "";
    for (i = 0; i < x.length; i++) {
      w3RemoveClass(x[i], "show");
      if (x[i].className.indexOf(c) > -1) w3AddClass(x[i], "show");
    }
  }

  // Show filtered elements
  function w3AddClass(element, name) {
    var i, arr1, arr2;
    arr1 = element.className.split(" ");
    arr2 = name.split(" ");
    for (i = 0; i < arr2.length; i++) {
      if (arr1.indexOf(arr2[i]) == -1) {
        element.className += " " + arr2[i];
      }
    }
  }

  // Hide elements that are not selected
  function w3RemoveClass(element, name) {
    var i, arr1, arr2;
    arr1 = element.className.split(" ");
    arr2 = name.split(" ");
    for (i = 0; i < arr2.length; i++) {
      while (arr1.indexOf(arr2[i]) > -1) {
        arr1.splice(arr1.indexOf(arr2[i]), 1);
      }
    }
    element.className = arr1.join(" ");
  }

  var btnContainer = document.getElementById("btnContainer");
  var btns = document.getElementsByClassName("button-link");
  for (var i = 0; i < btns.length; i++) {
    btns[i].addEventListener("click", function () {
      var current = document.getElementsByClassName("active");
      current[0].className = current[0].className.replace(" active", "");
      this.className += " active";
    });
  }
}