/* tagDiv Newspaper live Search debounce hack */

jQuery(function() {
  jQuery('.tdb-head-search-form-input').on('keydown', function(e) {
    if (typeof debounce_do_ajax_call === "undefined") {
      console.log('tdbSearch.do_ajax_call override');

      tdbSearch.original_td_do_ajax_call = tdbSearch.do_ajax_call;

      // as hacked out of context, needed to hook context or debounce would trigger on each call
      debounce_do_ajax_call = debounce(tdbSearch.original_td_do_ajax_call, 1500)

      tdbSearch.do_ajax_call = debounce_do_ajax_call
    }
  });
});

// https://davidwalsh.name/javascript-debounce-function
function debounce(func, wait, immediate) {
  var timeout;
  return function() {
    var context = this, args = arguments;
    var later = function() {
      timeout = null;
      if (!immediate) func.apply(context, args);
    };
    var callNow = immediate && !timeout;
    clearTimeout(timeout);
    timeout = setTimeout(later, wait);
    if (callNow) func.apply(context, args);
  };
};