(Greasemonkey) Hide Selected Scribd Items - bugged

// ==UserScript==
// @name              Hide Selected Scribd Items
// @namespace       petergblake.gmail.com
// @include         https://www.scribd.com/search?*
// @grant       GM.getValue
// @grant       GM.setValue
// ==/UserScript==
// Based on "Hide Selected Craigslist Listings" by vertigoelectric

ShowHideToggle = 1;

var $;

// Scribd already uses jQuery, so there is no need to add it again
// As of 6/2/2020, the version used is 3.3.1
GM_wait();

// Check if jQuery's loaded
function GM_wait() {
    if (typeof unsafeWindow.jQuery == 'undefined') {
        window.setTimeout(GM_wait, 100);
    } else {
        $ = unsafeWindow.jQuery.noConflict(true);
        letsJQuery();
    }
}

function letsJQuery() {
    //alert($); // check if the dollar (jquery) function works
    //alert($().jquery); // check jQuery version

    // Fetch blocklist and break it into individual IDs
    IDlistArray = String(GM.getValue("scribdIDlist")).split("|");
    IDlistCount = IDlistArray.length - 1;

    // Add page-wide controls
    $('span.results_count').append(' <span id="HiddenCount">[Total hidden across Scribd: '+IDlistCount+']</span>');
    $('span.results_count').append('<input type="button" id="UnhideButton" onclick="unhideAll();" value="Unhide All '+IDlistCount+'">');
    $('span.results_count').append('<input type="button" id="ShowHideButton" onclick="ShowHidden();" value="Show Hidden">');

    if (IDlistCount < 1) {
        $('#ShowHideButton').attr('disabled','true');
        $('#UnhideButton').attr('disabled','true');
    }

    // Add item-level hide/unhide controls
    $('div.controls').append('<div><input title="Hide" type="button" id="hide" onclick="hideListing(this);" value="X"</div>');
  $('div.controls').append('<div><input title="Unhide" type="button" id="unhide" onclick="unhideListing(this);" value="X" style="display:none"</div>');

  // Hide each ID on the blocklist
    for (x in IDlistArray)
    {
        if (IDlistArray[x])
        {
            someID = IDlistArray[x];
            $('a[id="'+someID+'"]').parent().parent().css('display','none');
        }
    }

    // Hide the item corresponding to a particular "Hide" button
function hideListing(node) {
      setTimeout(function() {
        someID = buttonPressed.parent().parent().getElementsByTagName('a')[0].getAttribute('id');
        itemID = "|"+someID;
        if (!GM.getValue("scribdIDlist")) {
            IDlist = "";
            var checkID = "";
            GM.setValue("scribdIDlist", String(itemID));
        } else {
            IDlist = GM.getValue("scribdIDlist");
            var checkID = IDlist.indexOf(itemID);
            if (checkID == -1) {
                newIDlist = itemID + GM.getValue("scribdIDlist");
                GM.setValue("scribdIDlist", String(newIDlist));
            }
        }

        // Hide "Hide" button
        buttonPressed.css('display','none');
        // Show corresponding "Unhide" button
        buttonPressed.parent().getElementById('unhide')[0].css('display','initial');

        // Hide or fade out this item
        if (ShowHideToggle == 0) {
            $('a[id="'+someID+'"]').parent().parent().css('opacity','0.3');
        } else if (ShowHideToggle == 1) {
            $('a[id="'+someID+'"]').parent().parent().css('display','none');
        }

        // Update total hidden
        IDlistArray = String(GM_getValue("scribdIDlist")).split("|");
        IDlistCount = IDlistArray.length - 1;
        $('#HiddenCount').html('[Total hidden across Scribd: '+IDlistCount+']');

        // Update page-level controls
        $('#ShowHideButton').removeAttr('disabled');
        $('#UnhideButton').removeAttr('disabled');
      }, 0);
};

// Components.utils.exportFunction(hideListing, unsafeWindow, { defineAs: "hideListing" });

    // Unhide the item corresponding to a particular "Unhide" button
    unsafeWindow.unhideListing = function(node) {
      setTimeout(function() {
            someID = buttonPressed.parent().parent().getElementsByTagName('a')[0].getAttribute('id');
            remitemID = "|"+someID;
            IDlist = GM.getValue("scribdIDlist");
            var checkID = IDlist.indexOf(remitemID);
            if (checkID != -1) {
                newIDlist = IDlist.replace(remitemID,'');
                GM.setValue("scribdIDlist", String(newIDlist));
            }

        // Hide "Unhide" button
        buttonPressed.css('display','none');
        // Unhide corresponding "Hide" button
        buttonPressed.parent().getElementById('hide')[0].css('display','initial');

        // Un-fade this item
        $('a[id="'+someID+'"]').parent().parent().css('display','initial');
        $('a[id="'+someID+'"]').parent().parent().css('opacity','1');

        // Update page-level controls
        IDlistArray = String(GM.getValue("scribdIDlist")).split("|");
        IDlistCount = IDlistArray.length - 1;
        if (IDlistCount < 1) {
            $('#ShowHideButton').attr('disabled','true');
            $('#UnhideButton').attr('disabled','true');
        }

        // Update total hidden
        $('#HiddenCount').html('[Total hidden across Scribd: '+IDlistCount+']');
      }, 0);
    };

    // Unhide everything, which is the same as erasing the blocklist
    unsafeWindow.unhideAll = function() {
      setTimeout(function() {
        GM_deleteValue("scribdIDlist");
        location.reload();
      }, 0);
    };

    // Toggle hidden documents between visible but faded and completely hidden
    unsafeWindow.ShowHidden = function() {
      setTimeout(function() {
        IDlistArray = String(GM.getValue("scribdIDlist")).split("|");
        if (ShowHideToggle == 1) {
            for (x in IDlistArray)
            {
                if (IDlistArray[x])
                {
                    $('a[id="'+IDlistArray[x]+'"]').parent().parent().css('display','initial');
                    $('a[id="'+IDlistArray[x]+'"]').parent().parent().css('opacity','0.3');
                }
            }
            $('#ShowHideButton').attr('value','Hide Again');
            ShowHideToggle = 0;
        } else if (ShowHideToggle == 0) {
            for (x in IDlistArray)
            {
                if (IDlistArray[x])
                {
                    $('a[id="'+IDlistArray[x]+'"]').parent().parent().css('display','none');
                }
            }
            $('#ShowHideButton').attr('value','Show Hidden');
            ShowHideToggle = 1;
        }

      }, 0);
    }
}