robin.user.js

// ==UserScript==
// @name         Robin Grow
// @namespace    http://tampermonkey.net/
// @version      1.32XYZ
// @description  Try to take over the world!
// @author       /u/mvartan - modified by /u/rlemon
// @include      https://www.reddit.com/robin*
// ==/UserScript==

function exec(fn) {
  var script = document.createElement('script');
  script.setAttribute("type", "application/javascript");
  script.textContent = '(' + fn + ')();';
  document.body.appendChild(script); // run the script
}


exec(function() {
    jQuery = jQuery || window.jQuery || window.$ || $;
	var me = jQuery('.user a').text();

  function addMins(date, mins) {
    var newDateObj = new Date(date.getTime() + mins * 60000);
    return newDateObj;
  }

  function howLongLeft() { // mostly from /u/Yantrio
    var remainingMessageContainer = jQuery(".robin--user-class--system:contains('approx')");
    if (remainingMessageContainer.length == 0) {
      // for cases where it says "soon" instead of a time on page load
      return 0;
    }
    var message = jQuery(".robin-message--message", remainingMessageContainer).text();
    var time = new Date(jQuery(".robin--user-class--system:contains('approx') .robin-message--timestamp").attr("datetime"));
    try {
      var endTime = addMins(time, message.match(/\d+/)[0]);
      return Math.floor((endTime - new Date()) / 60 / 1000 * 10) / 10;
    } catch (e) {
      return 0;
    }

    //grab the timestamp from the first post and then calc the difference using the estimate it gives you on boot
  }

  jQuery("#robinVoteWidget").prepend("<div class='addon'><div class='timeleft robin-chat--vote' style='font-weight:bold;'></div></div>");
  jQuery('.robin-chat--buttons').prepend("<div class='robin-chat--vote robin--vote-class--novote'><span class='robin--icon'></span><div class='robin-chat--vote-label'></div></div>");
  jQuery('#robinVoteWidget .robin-chat--vote').css('padding', '5px');

  var timeStarted = new Date();
  var name = jQuery(".robin-chat--room-name").text();

  function update() {
    jQuery(".timeleft").text(howLongLeft() + " minutes remaining");

    var list = {}
    jQuery.get("/robin/", function(a) {
      var start = "{" + a.substring(a.indexOf("\"robin_user_list\": ["));
      var end = start.substring(0, start.indexOf("}]") + 2) + "}";
      list = JSON.parse(end).robin_user_list;
      var increaseCount = list.filter(function(voter) {
        return voter.vote === "INCREASE"
      }).length;
      var abandonCount = list.filter(function(voter) {
        return voter.vote === "ABANDON"
      }).length;
      var novoteCount = list.filter(function(voter) {
        return voter.vote === "NOVOTE"
      }).length;
      var continueCount = list.filter(function(voter) {
        return voter.vote === "CONTINUE"
      }).length;
      jQuery('#robinVoteWidget .robin--vote-class--increase .robin-chat--vote-label').html('grow<br>(' + increaseCount + ')');
      jQuery('#robinVoteWidget .robin--vote-class--abandon .robin-chat--vote-label').html('abandon<br>(' + abandonCount + ')');
      jQuery('#robinVoteWidget .robin--vote-class--novote .robin-chat--vote-label').html('no vote<br>(' + novoteCount + ')');
      jQuery('#robinVoteWidget .robin--vote-class--continue .robin-chat--vote-label').html('stay<br>(' + continueCount + ')');
    });
    var lastChatString = jQuery(".robin-message--timestamp").last().attr("datetime");
    var timeSinceLastChat = new Date() - (new Date(lastChatString));
    var now = new Date();
    if (timeSinceLastChat !== undefined && (timeSinceLastChat > 60000 && now - timeStarted > 60000)) {
      window.location.reload(); // reload if we haven't seen any activity in a minute.
    }
    if (jQuery(".robin-message--message:contains('that is already your vote')").length === 0) {
      jQuery(".text-counter-input").val("/vote grow").submit();
    }

    // Try to join if not currently in a chat
    if (jQuery("#joinRobinContainer").length) {
      jQuery("#joinRobinContainer").click();
      setTimeout(function() {
        jQuery("#joinRobin").click();
      }, 1000);
    }
	setTimeout(update, 3000);
  }


  // hash string so finding spam doesn't take up too much memory
  function hashString(str) {
    var hash = 0;

    if (str == 0) return hash;

    for (i = 0; i < str.length; i++) {
      char = str.charCodeAt(i);
      hash = ((hash << 5) - hash) + char;
      hash = hash & hash; // Convert to 32bit integer
    }

    return hash;
  }

  // Searches through all messages to find and hide spam
  var spamCounts = {};

  function findAndHideSpam() {
    jQuery('.robin-message--message:not(.addon--hide)').each(function() {

      // skips over ones that have been hidden during this run of the loop
      var hash = hashString(jQuery(this).text());
      var user = jQuery('.robin-message--from', jQuery(this).closest('.robin-message')).text();

      if (!(user in spamCounts)) {
        spamCounts[user] = {};
      }

      if (hash in spamCounts[user]) {
        spamCounts[user][hash].count++;
        spamCounts[user][hash].elements.push(this);
      } else {
        spamCounts[user][hash] = {
          count: 1,
          text: this.textContent,
          elements: [this]
        };
      }
    });

    jQuery.each(spamCounts, function(user, messages) {
      jQuery.each(messages, function(hash, message) {
        if (message.count >= 2) {
          jQuery.each(message.elements, function(index, element) {
            jQuery(element).closest('.robin-message').remove();
          });
        } else {
          message.count = 0;
        }

        message.elements = [];
      });
    });
  }

  function removeSpam() {
    jQuery(".robin-message").filter(function(num, message) {
      var txt = jQuery(message).find(".robin-message--message").text();
      return txt.indexOf("[") === 0 || txt.indexOf("voted to") === 0 || txt.indexOf("Autovoter") > -1 || isDoubleByte(txt)|| isTooLong(txt); // starts with a [ or has "Autovoter"
    }).remove();
  }

  function isDoubleByte(str) {
    for (var i = 0, n = str.length; i < n; i++) {
        if (str.charCodeAt( i ) > 255) { return true; }
    }
    return false;
  }
  
  function isTooLong(str) {
	  return str.split(' ').some(word => word.length > 100);
  }
  
  new MutationObserver(records => records.forEach(record => parse(record.addedNodes))).observe(document.body, {
    childList: true,
    subtree: true
  });

  function mention(node) {
	if( jQuery(node).text().indexOf(me) >= 0 ) {
		jQuery(node).css({background:'rgba(255, 0, 0, 0.3)', color: '#242424'});
	}
  }
  
  function parse(node) {
    if (jQuery(node).is('.robin--message-class--message')) {
      mention(node);
	  findAndHideSpam();
      removeSpam();
    }
  }
  update()
});

Needs whitelist system