☰

Steam Item Price Averager

Takes the average of the last 10 items sold of the current item

  1. // ==UserScript==
  2. // @name       Steam Item Price Averager
  3. // @namespace  https://greasyfork.org/scripts/4219-steam-item-price-averager
  4. // @version    1.1
  5. // @description  Takes the average of the last 10 items sold of the current item
  6. // @include      http://steamcommunity.com/market/*
  7. // @require    http://code.jquery.com/jquery-latest.js
  8. // @copyright  2014, Nate
  9. // ==/UserScript==
  10.  
  11. $(document).ready(function() {
  12.     
  13.     // Add table header
  14.     $("#searchResults").find(".market_listing_table_header").first().children(".market_listing_right_cell").last().after('<div class="market_listing_right_cell" style="padding: 0 0.5em">AVG. PRICE</div>');
  15.     $("#sellListings").find(".market_listing_table_header").first().children(".market_listing_right_cell").last().after('<div class="market_listing_right_cell" style="padding: 0 0.5em">AVG. PRICE</div>');
  16.     
  17.     var url = window.location.pathname;
  18.     var pageType = getPageType(url);
  19.     //console.log(url);
  20.         
  21.     if (pageType == "item") {
  22.         var item = $(".market_listing_nav a:last-child").html();
  23. 		new Ajax.Request( 'http://steamcommunity.com/market/pricehistory/', {
  24.             method: 'get',
  25.             parameters: {
  26.                 appid: getAppIDItem(url),
  27.                 market_hash_name: item
  28.             },
  29.             onSuccess: function( transport ) { sumAverage(transport) },
  30.             onFailure: function( transport ) { failed() }
  31.         } );  
  32.     } else if (pageType == "search") {
  33. 		// Get average price for each item
  34.         $('#searchResults').find('.market_listing_item_name').each(function() {
  35.             var item = $(this).text();
  36.             var currItem = this;
  37.             
  38.             new Ajax.Request( 'http://steamcommunity.com/market/pricehistory/', {
  39.                 method: 'get',
  40.                 parameters: {
  41.                     appid: getAppIDMulti(this),
  42.                     market_hash_name: item
  43.                 },
  44.                 onSuccess: function( transport ) { sumAverage(transport, currItem, item) },
  45.                 onFailure: function( transport ) { failed(item) }
  46.             } ); 
  47.         });  
  48.     } else {
  49. 		// Get average price for each item
  50.         $('#sellListings').find('.market_listing_item_name').each(function() {
  51.             var item = $(this).text();
  52.             var currItem = this;
  53.             
  54.             new Ajax.Request( 'http://steamcommunity.com/market/pricehistory/', {
  55.                 method: 'get',
  56.                 parameters: {
  57.                     appid: getAppIDMulti(this),
  58.                     market_hash_name: item
  59.                 },
  60.                 onSuccess: function( transport ) { sumAverage(transport, currItem, item) },
  61.                 onFailure: function( transport ) { failed(item) }
  62.             } ); 
  63.         });  
  64.     }
  65.     
  66.     
  67.     function getPageType(url) {
  68.         var splitURL = url.split("/");
  69.         var pageType = splitURL[2];
  70.         //console.log(pageType);
  71.         if (pageType == "listings") {
  72.             //console.log("item");
  73.             return "item";
  74.         } else if (pageType == "search") {
  75.             //console.log("search");
  76.             return "search";
  77.         } else {
  78.             //console.log("main");
  79.             return "main";
  80.         }
  81.     }
  82.     
  83.     function getAppIDMulti(elem) {
  84.         var a = $(elem).parent().parent().parent().attr('href');
  85.         //console.log(a);
  86.         var url = a.split("/");
  87.         var appid = url[5];
  88.         //console.log(appid);
  89.         return appid;
  90.     }
  91.     
  92.     function getAppIDItem(url) {
  93.         var splitURL = url.split("/");
  94.         var appid = splitURL[3];
  95.         //console.log(appid);
  96.         return appid;
  97.     }
  98.     
  99.     function failed() {
  100.      	console.log("Could not get price history for " + item);   
  101.     }
  102.     
  103.     function sumAverage(transport, currItem, item) {
  104.         // JSON
  105.         var results = transport.responseText;
  106.         
  107.         // Print results - debugging
  108.         //console.log(results);
  109.         
  110.         // Parse JSON
  111.         var parsed = JSON.parse(results);
  112.         
  113.         // Store in array
  114.         var arr = $.map(parsed, function(el) { return el; });
  115.  
  116.         // Number of sales
  117.         //console.log(arr.length);
  118.         
  119.         // Variables
  120.         var total = 0;
  121.         var count = 10;
  122.         
  123.         for (var i=arr.length-1; i >= arr.length - count;i--) {
  124.             // Get sale price
  125.             var val = arr[i][1];
  126.             // Add to total
  127.             total = total + val
  128.             // Value output - debugging
  129.             //console.log("VALUE " + val);
  130.         }
  131.         
  132.         // Calculate average
  133.         var avg = parseFloat(total/count).toFixed(2);
  134.         
  135.         // Average output - debugging
  136.         //console.log("AVERAGE " + avg);
  137.         
  138.         if (pageType == "item") {
  139.             // Show on page
  140.         	$(".item_desc_content").append('<div class="average_price" style="font-size: 1.2em"> Average price: <span style="font-size: 1.75em">$' + avg + '</span></div>');
  141.         } else {
  142.             // Show on page
  143.             $(currItem).parent().parent().children(".market_listing_right_cell").last().after('<div class="market_listing_right_cell average_price" style="text-align: center; width: 80px"><span class="market_table_value" style="padding: 0 0.5em">$' + avg + '</span></span></div>');   
  144.         }
  145.         
  146.     }
  147. });