Takes the average of the last 10 items sold of the current item
// ==UserScript==
// @name Steam Item Price Averager
// @namespace https://greasyfork.org/scripts/4219-steam-item-price-averager
// @version 1.1
// @description Takes the average of the last 10 items sold of the current item
// @include http://steamcommunity.com/market/*
// @require http://code.jquery.com/jquery-latest.js
// @copyright 2014, Nate
// ==/UserScript==
$(document).ready(function() {
// Add table header
$("#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>');
$("#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>');
var url = window.location.pathname;
var pageType = getPageType(url);
//console.log(url);
if (pageType == "item") {
var item = $(".market_listing_nav a:last-child").html();
new Ajax.Request( 'http://steamcommunity.com/market/pricehistory/', {
method: 'get',
parameters: {
appid: getAppIDItem(url),
market_hash_name: item
},
onSuccess: function( transport ) { sumAverage(transport) },
onFailure: function( transport ) { failed() }
} );
} else if (pageType == "search") {
// Get average price for each item
$('#searchResults').find('.market_listing_item_name').each(function() {
var item = $(this).text();
var currItem = this;
new Ajax.Request( 'http://steamcommunity.com/market/pricehistory/', {
method: 'get',
parameters: {
appid: getAppIDMulti(this),
market_hash_name: item
},
onSuccess: function( transport ) { sumAverage(transport, currItem, item) },
onFailure: function( transport ) { failed(item) }
} );
});
} else {
// Get average price for each item
$('#sellListings').find('.market_listing_item_name').each(function() {
var item = $(this).text();
var currItem = this;
new Ajax.Request( 'http://steamcommunity.com/market/pricehistory/', {
method: 'get',
parameters: {
appid: getAppIDMulti(this),
market_hash_name: item
},
onSuccess: function( transport ) { sumAverage(transport, currItem, item) },
onFailure: function( transport ) { failed(item) }
} );
});
}
function getPageType(url) {
var splitURL = url.split("/");
var pageType = splitURL[2];
//console.log(pageType);
if (pageType == "listings") {
//console.log("item");
return "item";
} else if (pageType == "search") {
//console.log("search");
return "search";
} else {
//console.log("main");
return "main";
}
}
function getAppIDMulti(elem) {
var a = $(elem).parent().parent().parent().attr('href');
//console.log(a);
var url = a.split("/");
var appid = url[5];
//console.log(appid);
return appid;
}
function getAppIDItem(url) {
var splitURL = url.split("/");
var appid = splitURL[3];
//console.log(appid);
return appid;
}
function failed() {
console.log("Could not get price history for " + item);
}
function sumAverage(transport, currItem, item) {
// JSON
var results = transport.responseText;
// Print results - debugging
//console.log(results);
// Parse JSON
var parsed = JSON.parse(results);
// Store in array
var arr = $.map(parsed, function(el) { return el; });
// Number of sales
//console.log(arr.length);
// Variables
var total = 0;
var count = 10;
for (var i=arr.length-1; i >= arr.length - count;i--) {
// Get sale price
var val = arr[i][1];
// Add to total
total = total + val
// Value output - debugging
//console.log("VALUE " + val);
}
// Calculate average
var avg = parseFloat(total/count).toFixed(2);
// Average output - debugging
//console.log("AVERAGE " + avg);
if (pageType == "item") {
// Show on page
$(".item_desc_content").append('<div class="average_price" style="font-size: 1.2em"> Average price: <span style="font-size: 1.75em">$' + avg + '</span></div>');
} else {
// Show on page
$(currItem).parent().parent().children(".market_listing_right_cell").last().after('<div class="market_listing_right_cell average_price" style="text-align: center; width: 80px"><span class="market_table_value" style="padding: 0 0.5em">$' + avg + '</span></span></div>');
}
}
});