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ciderpunx / TwatBegone

// ==UserScript==
// @name        TwatBegone
// @author      Charlie Harvey and Graham Gillions
// @copyright   2017, Charlie Harvey and Graham Gillions (https://charlieharvey.org.uk, http://oxguin.net)
// @namespace   ox4
// @icon        https://pbs.twimg.com/profile_images/850405364067688448/3x0b2zmz_normal.jpg
// @description Removes twats and all mentions of them from twitter
// @homePageURL http://twatbegone.com
// @supportURL  https://github.com/ciderpunx/userscripts/issues
// @include     https://twitter.com/*
// @version     0.5.5
// @grant       GM_getResourceText
// @grant       GM_xmlhttpRequest
// @grant       GM_getValue
// @grant       GM_setValue
// @grant       GM_addStyle
// @license     GNU General Public License v3.0; https://www.gnu.org/licenses/gpl-3.0.en.html
// @resource    configPage https://raw.githubusercontent.com/ciderpunx/userscripts/master/TwatBegone/configPage.html
// @resource    helpPage https://raw.githubusercontent.com/ciderpunx/userscripts/master/TwatBegone/helpPage.html
// @resource    css https://raw.githubusercontent.com/ciderpunx/userscripts/master/TwatBegone/style.css
// @resource    kittehs https://raw.githubusercontent.com/ciderpunx/userscripts/master/TwatBegone/kittehs.txt
// @resource    haiku https://raw.githubusercontent.com/herval/haikuzao/master/inputs/haiku.txt
// @connect     helloacm.com
// ==/UserScript==

var defaultTwats = [ "realDonaldTrump"
                   , "Nigel_Farage"
                   , "KTHopkins"
                   , "piersmorgan"
                   ];

var version = GM_info.script.version; 

var kittehs = GM_getResourceText("kittehs").split("\n");

var haikuWords = GM_getResourceText("haiku").split(/\s+/);

var fortuneServerURL = "https://helloacm.com/api/fortune/";

var fortuneServerTimeout = 800;

var bsStrings = [ "This tweet was bullshit."
                , "Begone twat."
                , "Tweet removed by the taste police."
                , "Yuck. Horrible twat removed."
                , "A twat on your TL! Moving on ..."
                , "Look over there *points*. *replaces tweet*."
                , "Yikes! That tweet was awful."
                , "No need to see that tweet."
                , "This was not the tweet you were looking for."
                , "No, no, no."
                ];

var twatAvis = [ "https://pbs.twimg.com/profile_images/850405364067688448/3x0b2zmz_bigger.jpg"
                ,"https://pbs.twimg.com/media/C-gqTyXXYAAf-WA.jpg"
                ,"https://pbs.twimg.com/media/C-gqU0WXcAIXJoj.jpg"
                ,"https://pbs.twimg.com/media/C-gqW3EW0AUCHNz.jpg"
                ,"https://pbs.twimg.com/media/C-gqXq4XcAU-sQ6.jpg"
                ,"https://pbs.twimg.com/media/C-gqb1yWsAAFSmr.jpg"
                ,"https://pbs.twimg.com/media/C-gqeSNW0AEdI7G.jpg"
                ,"https://pbs.twimg.com/media/C-gqfWvXkAAzyVN.jpg"
                ,"https://pbs.twimg.com/media/C-gqgKHW0AIvi4I.jpg"
                ,"https://pbs.twimg.com/media/C-gqjQJW0AAR_ar.jpg"
    ];

var css = GM_getResourceText('css');

if( pageIs("twatconf") || pageIs("twats=") ) {
  showConfigPage();
}
else if( pageIs("twathelp") ) {
  showHelpPage();
}
else {
  window.addEventListener('load', showIndicator, false);
  takeAction();
}

function pageIs(path) {
  return document.location.href.indexOf('https://twitter.com/?' + path) > -1;
}

function takeAction() {
  var action = GM_getValue("action", "TwatBegone");
  if (action=="Fortune") {
    twatFortune();
  }
  else if (action=="Haiku") {
    twatHaiku();
  }
  else if (action=="Kitten") {
    twatToKitteh();
  }
  else {
    twatBegone();
  }
}

function showConfigPage() {
  document.documentElement.innerHTML = GM_getResourceText("configPage");
  initTwats();
  initAction();
  showVersion();
  addSubmitListener();
  GM_addStyle(css);
}

function showHelpPage() {
  document.documentElement.innerHTML = GM_getResourceText("helpPage");
  showVersion();
  GM_addStyle(css);
}

function showVersion() {
  document.getElementById('version').innerHTML =
    "This is TwatBegone version " + version;
}

function initAction() {
  var action = GM_getValue("action", "TwatBegone");
  document.getElementById('action').value = action;
  setAction(action);
}

function initTwats() {
  var twats = cleanTwats(GM_getValue("twats", defaultTwats.join("\n")));
  document.getElementById('twats').value = twats;
  setTwats(twats);
}

function addSubmitListener() {
  document.getElementById("submit").addEventListener('click',updateSettings,false);
}

function setTwats(twats){
  GM_setValue("twats",cleanTwats(twats));
}

// Given a string of twats, 1 per line, filter out any empty lines
function cleanTwats(twats) {
  if( Object.prototype.toString.call( twats ) === '[object HTMLTextAreaElement]' ) {
    twats = twats.value;
  }
  return twats.split("\n").filter(nonempty).join("\n");
}

function setAction(action){
  GM_setValue("action",action);
}

// Called when user clicks updateSettings button on config page
function updateSettings() {
  setTwats(document.getElementById('twats').value);
  setAction(document.getElementById('action').value);
  var d = new Date();
  var info = document.getElementById('info');
  info.innerHTML = "Settings updated at: " + d.toTimeString().replace(/\s.*/,'');
  info.style.display="block";
}

// Makes a little fixed div at the bottom right with a link to the config page, so ppl know TwatBegone is running
function showIndicator() {
  var divv = document.createElement('div');
  divv.innerHTML = '<span title="Configure TwatBegone"><img style="float:left;height:25px;padding:2px" src="https://pbs.twimg.com/profile_images/850405364067688448/3x0b2zmz_normal.jpg" /><a href="https://twitter.com/?twatconf" style="color:#fff">TwatBegone Active</a></span>';
  divv.style.cssText = 'position:fixed;width:155px;height:2em;text-align:center;z-index:100;background:#33cc33;line-height:2em;right:0;bottom:0;font-family:freesans, helvetica, arial, sans-serif;';
  document.getElementById('page-outer').appendChild(divv);
}

// Action: Remove all mention of twats from twitter feed
function twatBegone() {
  twatProcess( function(tweet) { tweet.parentNode.removeChild(tweet); }, true, true );
}

// Action: Replace tweet with a cat gif
function twatToKitteh() {
  twatProcess( function(tweet) {
    var mahKitteh = kittehs[Math.floor(Math.random() * kittehs.length)];
    tweet.innerHTML =
      textTweet( 'Here&#8217;s a <a href="' + mahKitteh + '">kitten gif</a> instead.'
               , '<br /><video height="400" width="500" loop="loop" type="video/mp4" controls="controls" src="' + mahKitteh + '" alt="kitteh" />'

               );
  }, true);
}

// Action: replace with fortune from the server
function twatFortune() {
  twatProcess (function(tweet) {
    var fortune = "cannot load fortune";
    GM_xmlhttpRequest({
      method: "GET",
      url: fortuneServerURL,
      timeout: fortuneServerTimeout,
      onload: function(response) {
        fortune = response.responseText
                          .replace(/["]/g,'')
                          .replace(/\\n/g,'<br />')
                          .replace(/\\t/g,' &nbsp; &nbsp;')
                          .replace(/\\/g,'');
        tweet.innerHTML = textTweet('Here is your fortune instead.', fortune);
      }
    });
  }, true);
}

// Action: replace with Haiku
function twatHaiku() {
  twatProcess (function(tweet) {
    var haiku = "cannot compose haiku";
    haiku = makeHaiku();
    tweet.innerHTML =
        textTweet( 'Here&#8217;s a haiku made of words from <a href="https://raw.githubusercontent.com/herval/haikuzao/master/inputs/haiku.txt">these ones</a>.'
                 , haiku
                 );
  }, true);
}
// Set the avi
function randAvi() {
	  var twatAvi = twatAvis[Math.floor(Math.random() * twatAvis.length)];
	  return twatAvi;
}
// Set the bsString
function randBsString() {
  var bsString = bsStrings[Math.floor(Math.random() * bsStrings.length)];
  return bsString;
}
// Given a title and a text, return something that can be used as a tweet, at least on desktop.
function textTweet(title, txt) {
  return [ '<div style="border-bottom:1px solid #eee;padding:1em 0">'
         , '<img class="avatar" style="float:left;margin-left:12px" src="' + randAvi() + '" alt="TBG" />'
         , '<p style="margin-left:70px"><strong>' + randBsString() + '</strong> '
         , '<span style="color:#657786">' + title + '</span></p>'
         , '<p style="margin-left:70px">' + txt + '</p>'
         , '<p><span style="margin-left: 70px; color:#657786; font-size:80%">A Much Nicer Twitter&#8482; brought to you by <span style="color:#000fb3"><a href="https://twitter.com/TwatBegone">@TwatBegone</a></span> : <span style="color:#000fb3"><a href="https://t.co/3dgqeFp3uy">TwatBegone.com</a></span></span></p>'
         ].join('');
}

// Take a function and apply it to any tweets that match one of the current twats
function twatProcess(action, firstCall, destructiveUpdate) {
  var tweets = document.getElementsByClassName("js-stream-item");

  if(firstCall) { //&& document.location.href=="https://twitter.com/"){
    document.body.onkeydown = function (e) {
      if(e.keyCode==190) { // i.e. '.' for refresh
        twatProcess(action, false );
      }
    };
    delayedCalls(function(){twatProcess(action);}, false);
  }

  for (var i=0; i<=tweets.length; i++) {
   if (typeof tweets[i] !== 'undefined') {
     var tc = tweets[i].textContent;
     if (anyMatch(tc)) {
       action(tweets[i]);
       if(destructiveUpdate) {
        i--; // yes, this is disgusting
       }
     }
   }
  }
}

// Call a function at some set delays, to catch TL on twitter
// 300ms, 1000.. step 1000
function delayedCalls(fn) {
  setTimeout(fn, 300); // for really fast connections
  setInterval(fn, 1000);
}

// Check text content doesn't contain any mentions of twats
function anyMatch(tc) {
  var twats = GM_getValue("twats", defaultTwats.join("\n")).split("\n").filter(nonempty);
  for(var i=0;i<twats.length;i++) {
    var t = new RegExp(twats[i],'i');
    if(tc.match(t)!==null) {
      return true;
    }
  }
  return false;
}

function nonempty(xs) {
  return !(/^\s*$/.test(xs));
}

// Make a 5-7-5 syllable(ish) haiku
function makeHaiku() {
  return makeLine(5)
       + "<br />\n"
       + makeLine(7)
       + "<br />\n"
       + makeLine(5);
}

// Make a line of n syllables
function makeLine(n) {
  if(n<1) {
    return '';
  }
  var m = 1 + Math.floor(Math.random() * (n-1));
  var word = getWordOfSyllables(m);
  ws = [];
  if((n-m)>0) {
    ws = makeLine(n-m);
  }
  return word + " " + ws;
}

// Find a word with x syllables in it
function getWordOfSyllables(x) {
  var offset = Math.floor(Math.random() * haikuWords.length);
  while(haikuWords[offset]!="" && syllable(haikuWords[offset])!=x) {
    offset++;
    if(offset>haikuWords.length-1) {
      offset=0;
    }
  }
  return haikuWords[offset];
}

// Syllable counting machinery based on Perl's Lingua::EN:Syllable
// Far from entirely accurate.
function syllable(word) {
  var scrugg = [];
  var syl = 0;
  var subSyl = [ 'cial'
               , 'tia'
               , 'cius'
               , 'cious'
               , 'giu'  // belgium!
               , 'ion'
               , 'iou'
               , 'sia$'
               , '.ely$' // absolutely! (but not ely!)
               ];
  var addSyl = [ 'ia'
               , 'riet'
               , 'dien'
               , 'iu'
               , 'io'
               , 'ii'
               , '[aeiouym]bl$'    // -Vble, plus -mble
               , '[aeiou]{3}'      // agreeable
               , '^mc'
               , 'ism$'            // -isms
               , '([^aeiouy])\1l$' // middle twiddle battle bottle, etc.
               , '[^l]lien'        // alien, salient [1]
               ,'^coa[dglx].'      // [2]
               , '[^gq]ua[^auieo]' // i think this fixes more than it breaks
               , 'dnt$'            // couldn't
               ];

  word = word.toLowerCase();
  word = word.replace(/\'/g,''); // fold contractions.  not very effective.
  word = word.replace(/e$/,'');  // trailing e
  scrugg = word.split(/[^aeiouy]+/); // '-' should perhaps be added?
  //shift(@scrugg) unless ($scrugg[0]);
  if (scrugg.length > 1) {
    scrugg.shift();
  }
  for (var i=0; i<subSyl.length; i++) {
    if(word.match(new RegExp(subSyl[i]))) {
      syl--;
    }
  }
  for(var i=0; i<addSyl.length; i++) {
    if(word.match(new RegExp(addSyl[i]))) {
      syl++;
    }
  }
  if (word.length==1) {
    syl++;
  }
  // count vowel groupings
  syl += scrugg.length;
  if (syl==0) {
    syl=1;
  }
  return syl;
}