IsThereCouponForThis

Отображает доступные купоны с помощью значка на странице магазина, на виджетах встроенных на форуме и в вишлисте.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        IsThereCouponForThis
// @name:en     IsThereCouponForThis
// @namespace   https://greatest.deepsurf.us/users/2205
// @description Отображает доступные купоны с помощью значка на странице магазина, на виджетах встроенных на форуме и в вишлисте.
// @description:en Show coupons available on game steam store page, on wishlist and on widgets embedded in steamcommunity discussions.
// @license     Apache-2.0
// @author      Rudokhvist
// @include     http://store.steampowered.com/*
// @include     https://store.steampowered.com/*
// @connect     pastebin.com
// @run-at      document-end
// @version     2.8
// @grant       GM.xmlhttpRequest
// @grant       GM_xmlhttpRequest
// @language    English
// ==/UserScript==
var debug = false;

var getJSON = function(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.responseType = 'json';
    xhr.onload = function() {
      var status = xhr.status;
      if (status === 200) {
        callback(null, xhr.response);
      } else {
        callback(status, xhr.response);
      }
    };
    xhr.send();
};

//rate limiting
var getJSONRL = function(url, callback) {
  var Rate=1500; //ms between requests;
    var lastCall=localStorage.getItem ('ITCFTRateLimiter');
    if (lastCall!==null) {
      if ((parseInt(lastCall) + Rate) > Date.now()) {
        window.setTimeout(function(){
          getJSONRL(url,callback);
        },parseInt(lastCall)+Rate-Date.now());
      } else { //already time
        getJSON(url,callback);
        localStorage.setItem('ITCFTRateLimiter',Date.now());
      }
    } else { //first call ever
      getJSON(url,callback);
      localStorage.setItem('ITCFTRateLimiter',Date.now());
    }
};

var elemVisible =function( elem ) {
  if (elem===null) {
    return false;
  } else {
    return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );
  }
};

var processWishlist = function (subids,couponMap,container){
      var NewElement=document.createElement("span");
      NewElement.setAttribute("style","font-size:18px;text-align: center;cursor:default;border-radius: 2px 2px 2px; border: 1px solid; user-select: none !important; pointer-events:auto !important; line-height: 1; margin-left: 5px; margin-right: 5px;");
      NewElement.setAttribute("class","platform_img");
      NewElement.setAttribute("tag","coupondata");
      var foundcoupons=0;
      var foundlist="";
      if (subids.length == 0){
          if (debug) {console.log(' placeholder used');}
          NewElement.setAttribute("title","Getting data");
          var img = document.createElement("img");
          img.witdh = 16;
          img.height = 16;
          img.src = "https://steamcommunity-a.akamaihd.net/public/images/login/throbber.gif";
          NewElement.appendChild(img);
      } else {
      for (var m=0;m<subids.length;m++) {
        if (couponMap.has(subids[m])) {
          if (foundcoupons>0) {
            foundlist=foundlist+", ";
          }
          foundlist=foundlist+couponMap.get(subids[m]);
          foundcoupons++;
        }
      }
      if (foundcoupons>0) {
        NewElement.setAttribute("title","Coupons: "+foundlist);
        NewElement.appendChild(document.createTextNode("$"));
      } else {
        NewElement.setAttribute("title","No Coupons Found");
        NewElement.appendChild(document.createTextNode("X"));
      }
      }
      var showplace=container.getElementsByClassName('platform_icons')[0];
      if (showplace.querySelector('[tag="coupondata"]')!==null){
          showplace.removeChild(showplace.querySelector('[tag="coupondata"]'));
      }
        var newchild=showplace.appendChild(NewElement);
        newchild.addEventListener('touchstart', function() {
            this.classList.add('touched');
        }.bind(newchild));
};

var processWishlistRow = function(container,couponMap){
      if (container.querySelector('[tag="coupondata"]')!==null){
        return;
      }
      var subidContainer=container.querySelector('[name="subid"]');
      var subids=[];
      if (subidContainer===null) {
        if (debug) {console.log(new Date(Date.now()).toTimeString()+' We dont have subid for '+ container.getElementsByClassName('title')[0].innerText);}
        var appid=container.getAttribute('data-app-id');
        (function(appid,subids,couponMap,container){
        var cachedPackages=sessionStorage.getItem("ITCFTappid"+appid);
        if (cachedPackages===null) {
            if (debug) {console.log(new Date(Date.now()).toTimeString()+' Getting subids for '+ container.getElementsByClassName('title')[0].innerText);}
            processWishlist([],couponMap,container);
        getJSONRL('https://store.steampowered.com/api/appdetails?appids='+appid, function(err, data) {
          if (err !== null) {
            console.log(new Date(Date.now()).toTimeString()+' Something went wrong: ' + err);
          } else {
             subids.lenght=0;
             if (typeof(data[appid].data.packages)!=='undefined') {
               sessionStorage.setItem("ITCFTappid"+appid,data[appid].data.packages.toString());
             for (var w=0;w<data[appid].data.packages.length;w++){
               subids.push(data[appid].data.packages[w].toString());
             }
             if (debug) {console.log(new Date(Date.now()).toTimeString()+' Aquired subids for '+ container.getElementsByClassName('title')[0].innerText+" are: "+subids.toString());}
             processWishlist(subids,couponMap,container);
             } else {
               if (debug) {console.log(new Date(Date.now()).toTimeString()+' No subids aquired for '+ container.getElementsByClassName('title')[0].innerText);}
               //if no subid found - store empty line, to prevent further requests.
               //it will be cached only untill browser restart, so it's fine.
               sessionStorage.setItem("ITCFTappid"+appid,"");
               processWishlist([0],couponMap,container); //show "no coupons"
             }
          }
        });
        } else { //Cached subids
          subids.lenght=0;
          var packages=cachedPackages.split(",");
            for (var x=0;x<packages.length;x++){
               subids.push(packages[x]);
            }
            if (debug) {console.log(new Date(Date.now()).toTimeString()+' Cached subids for '+ container.getElementsByClassName('title')[0].innerText+" are: "+subids.toString());}
            processWishlist(subids,couponMap,container);
        }
        })(appid,subids,couponMap,container);
      } else {
        subids.push(subidContainer.value);
        processWishlist(subids,couponMap,container);
      }
}

var renewWishlist = function(couponMap){
     var containers=document.getElementsByClassName('wishlist_row');
     for (var k=0;k<containers.length;k++) {
         processWishlistRow(containers[k],couponMap);
      var container=containers[k];
    }
};


+function(){
  var style = document.createElement("style");
	style.appendChild(document.createTextNode(""));
	document.head.appendChild(style);
  var sheet=style.sheet;
  sheet.insertRule("[title] {	border-bottom: 1px dashed rgba(0, 0, 0, 0.2); border-radius:2px; position: relative; }",0);
  sheet.insertRule(".touched[title]:hover:after { position: absolute; bottom: 100%; left: -10%; content: attr(title); border: 1px solid rgba(0, 0, 0, 0.2); background-color: white; color: black !important; box-shadow: 1px 1px 3px; padding: 0.3em; z-index: 1; font-size: 11px !important;}",0);

  var couponMap = new Map();
  GM_xmlhttpRequest({
  method: "GET",
  url: "https://pastebin.com/raw/i8ri7Ne7",
  onload: function(response) {
       var couponlist = response.responseText;
       var couponlistlines = couponlist.split('\n');
       for (var i=1 ; i<couponlistlines.length ; i++) { //start from 1 line to exclude header
         if (couponlistlines[i].startsWith('=====')) break; //stop at first separator, to avoid double records
         var coupondata=couponlistlines[i].split('\t');
         if (coupondata.length>3) {
           var subids=coupondata[3].split(',');
           for (var j=0; j<subids.length; j++) {
             if (couponMap.has(subids[j])) {
                couponMap.set(subids[j],couponMap.get(subids[j])+", "+coupondata[0]);
             } else {
                couponMap.set(subids[j],coupondata[0]);
             }
           }

         }
       }
var timerId = window.setInterval(function WLReady() {
    if (!elemVisible(document.getElementById('throbber'))) {
     clearInterval(timerId);
    //store page
    var containers=document.getElementsByClassName('game_area_purchase_game');
    for (var k=0;k<containers.length;k++) {
      var container=containers[k];
      var subidcontainer=container.querySelector('[name="subid"]');
      if (subidcontainer!==null) {
        var subid=subidcontainer.value;
        var NewElement=document.createElement("span");
        NewElement.setAttribute("style","font-size:18px;text-align: center;cursor:default;border-radius: 2px 2px 2px; border: 1px solid; user-select: none !important; pointer-events:auto !important; line-height: 1; margin-left: 5px; margin-right: 5px;");
        NewElement.setAttribute("class","platform_img");
        if (couponMap.has(subid)){
          NewElement.setAttribute("title","Coupons: "+couponMap.get(subid));
          NewElement.appendChild(document.createTextNode("$"));
        } else {
          NewElement.setAttribute("title","No Coupons Found");
          NewElement.appendChild(document.createTextNode("X"));
        }
        var showplace=container.getElementsByClassName('game_area_purchase_platform')[0];
        var newchild=showplace.insertBefore(NewElement,showplace.firstChild);
        newchild.addEventListener('touchstart', function() {
            this.classList.add('touched');
        }.bind(newchild));
      }
    }
      //forum widgets
      var wcontainer=document.getElementById ('widget');
      if (wcontainer!==null) {
      subid=wcontainer.querySelector('[name="subid"]').value;
      NewElement=document.createElement("span");
      NewElement.setAttribute("style","font-size:18px;text-align: center;cursor:default;border-radius: 2px 2px 2px; border: 1px solid; user-select: none !important; pointer-events:auto !important;");
      NewElement.setAttribute("class","platform_img");
      if (couponMap.has(subid)){
        NewElement.setAttribute("title","Coupons: "+couponMap.get(subid));
        NewElement.appendChild(document.createTextNode("$"));
      } else {
        NewElement.setAttribute("title","No Coupons Found");
        NewElement.appendChild(document.createTextNode("X"));
      }
      showplace=wcontainer.getElementsByClassName('game_area_purchase_platform')[0];
      var newwchild=showplace.appendChild(NewElement);
      newwchild.addEventListener('touchstart', function() {
          this.classList.add('touched');
      }.bind(newwchild));
      }
    //wishlist
      if (document.getElementsByClassName('wishlist_row').length>0) {
          renewWishlist(couponMap);
          var mutationObserver = new MutationObserver(function(mutations) {
              mutations.forEach(function(mutation) {
                  mutation.addedNodes.forEach( function(currentValue, currentIndex, listObj) {
                      if (currentValue.nodeType == Node.ELEMENT_NODE) {
                          if (currentValue.className == 'wishlist_row'){
                              processWishlistRow(currentValue,couponMap);
                          }
                      }
                  });
              });
          });
          mutationObserver.observe(document.documentElement, {
              childList: true,
              subtree: true
          });
      }

    } //main work
   },100); //SetInterval
  },
  onerror: function() {
      console.log('Error.');
  }
});
}();