var adsense_ad_names = [];
var ai_preview_window = typeof ai_preview !== 'undefined';

function ai_process_adsense_ad (element) {
  var ai_debug = typeof ai_debugging !== 'undefined';
  var adsense_iframe = jQuery(element);
  var adsense_width = adsense_iframe.attr ('width');
  var adsense_height = adsense_iframe.attr ('height');
  var adsense_iframe2 = adsense_iframe.contents().find ('iframe[allowtransparency]');
  var url_parameters = getAllUrlParams (adsense_iframe2.attr ('src'))

  if (typeof url_parameters ['client'] !== 'undefined') {
    var adsense_ad_client = url_parameters ['client'];
    var adsense_publisher_id = adsense_ad_client.replace ('ca-', '');
    var adsense_ad_slot = url_parameters ['slotname'];
    var adsense_index = url_parameters ['ifi'];

    if (ai_debug) console.log ('AI ADSENSE', adsense_index, adsense_ad_client, adsense_ad_slot, url_parameters ['format'], url_parameters ['w'], url_parameters ['h']);

    var adsense_overlay = jQuery('<div class="ai-debug-ad-overlay"></div>');

    var adsense_ad_info = '';
    if (typeof adsense_ad_slot !== 'undefined') {
      var adsense_ad_name = '';
      if (typeof adsense_ad_names ['publisher_id'] !== 'undefined' &&
          adsense_ad_names ['publisher_id'] == adsense_publisher_id &&
          typeof adsense_ad_names [adsense_ad_slot] !== 'undefined') {
        adsense_ad_name = '<div class="ai-info ai-info-2">' + adsense_ad_names [adsense_ad_slot] + '</div>';
      }
      adsense_ad_info = '<div class="ai-info ai-info-1">' + adsense_ad_slot + '</div>' + adsense_ad_name;
    } else {
        var adsense_auto_ads = adsense_iframe.closest ('div.google-auto-placed').length != 0;
        if (adsense_auto_ads) {
          adsense_overlay.addClass ('ai-auto-ads');
          adsense_ad_info = '<div class="ai-info ai-info-1">Auto ads</div>';
        } else adsense_overlay.addClass ('ai-no-slot');
      }

    var adsense_info = jQuery('<div class="ai-debug-ad-info"><div class="ai-info ai-info-1">AdSense #' + adsense_index + '</div><div class="ai-info ai-info-2">' + adsense_width + 'x' + adsense_height + '</div>' + adsense_ad_info + '</div>');

    adsense_iframe.after (adsense_info);

    if (!ai_preview_window) {
      adsense_iframe.after (adsense_overlay);
    }
  }
}

function ai_process_adsense_ads () {
  jQuery('ins ins iframe').each (function () {
    ai_process_adsense_ad (this);
  });
}

jQuery(document).ready(function($) {
  var ai_debug = typeof ai_debugging !== 'undefined';
  var ajaxurl = 'AI_AJAXURL';
  var nonce = 'AI_NONCE';
  var adsense_data = {'ai': 1}; // dummy

  $.post (ajaxurl, {'action': 'ai_ajax', 'ai_check': nonce, 'adsense-ad-units': adsense_data}
  ).done (function (data) {
      if (data != '') {
        try {
          adsense_ad_names = JSON.parse (data);

          if (ai_debug) console.log ('');
          if (ai_debug) console.log ("AI ADSENSE DATA:", Object.keys (adsense_ad_names).length - 1, 'ad units');

        } catch (error) {
          if (ai_debug) console.log ("AI ADSENSE DATA ERROR:", data);
        }
      }
  }).fail (function (xhr, status, error) {
    if (ai_debug) console.log ("AI ADSENSE DATA ERROR:", xhr.status, xhr.statusText);
  }).always (function (data) {
      if (ai_debug) console.log ('AI ADSENSE DATA', 'END');
  });

  if (!ai_preview_window) setTimeout (function() {ai_process_adsense_ads (jQuery);}, 2000);
});

function getAllUrlParams (url) {

  // get query string from url (optional) or window
  var queryString = url ? url.split('?')[1] : window.location.search.slice(1);

  // we'll store the parameters here
  var obj = {};

  // if query string exists
  if (queryString) {

    // stuff after # is not part of query string, so get rid of it
    queryString = queryString.split('#')[0];

    // split our query string into its component parts
    var arr = queryString.split('&');

    for (var i=0; i<arr.length; i++) {
      // separate the keys and the values
      var a = arr[i].split('=');

      // in case params look like: list[]=thing1&list[]=thing2
      var paramNum = undefined;
      var paramName = a[0].replace(/\[\d*\]/, function(v) {
        paramNum = v.slice(1,-1);
        return '';
      });

      // set parameter value (use 'true' if empty)
      var paramValue = typeof(a[1])==='undefined' ? true : a[1];

      // (optional) keep case consistent
      paramName = paramName.toLowerCase();
      paramValue = paramValue.toLowerCase();

      // if parameter name already exists
      if (obj[paramName]) {
        // convert value to array (if still string)
        if (typeof obj[paramName] === 'string') {
          obj[paramName] = [obj[paramName]];
        }
        // if no array index number specified...
        if (typeof paramNum === 'undefined') {
          // put the value on the end of the array
          obj[paramName].push(paramValue);
        }
        // if array index number specified...
        else {
          // put the value at that index number
          obj[paramName][paramNum] = paramValue;
        }
      }
      // if param name doesn't exist yet, set it
      else {
        obj[paramName] = paramValue;
      }
    }
  }

  return obj;
}