Show your local currency on the price tag while you are abroad.
// ==UserScript==
// @name Steam Easy Currency
// @namespace https://github.com/Ostrichbeta/steam-easy-currency
// @version 0.95.2
// @description Show your local currency on the price tag while you are abroad.
// @author Ostrichbeta Chan
// @license MIT License
// @match https://store.steampowered.com/*
// @match https://steamcommunity.com/*
// @exclude https://store.steampowered.com/cart/*
// @exclude https://store.steampowered.com/checkout/*
// @icon data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @require https://code.jquery.com/jquery-3.7.1.min.js
// @connect api.exchangerate.host
// @connect store.steampowered.com
// @grant GM_xmlhttpRequest
// @grant GM_getResourceText
// @grant GM_addStyle
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_deleteValue
// @run-at document-end
// ==/UserScript==
(async function() {
function makeGetRequest(url, returnJSON) {
return new Promise((resolve, reject) => {
GM_xmlhttpRequest({
method: "GET",
url: url,
onload: function(response) {
if (returnJSON) {
resolve(JSON.parse(response.responseText));
} else {
resolve(response.responseText);
}
},
onerror: function(error) {
reject(error);
}
});
});
}
function engineeringNotation(num, digits) {
let notations = {Q: 1e30, R: 1e27, Y: 1e24, Z: 1e21,
E: 1e18, P: 1e15, T: 1e12, G: 1e9,
M: 1e6, k: 1e3
};
for (const key in notations) {
if (num / notations[key] > 1) {
let intlen = Math.floor(Math.log10(num / notations[key]));
return (num / notations[key]).toFixed(digits - intlen).toString() + key;
}
}
return num.toString();
}
function appendPrice(priceObjList, currencyJSON, appendBr) {
for (let i = 0; i < priceObjList.length; i++) {
var item = priceObjList[i];
if (! $(item).text().replaceAll(/\s/g,'').match(/[\d,]+(?:\.\d+)?/)) {
// When there are no price tags, e.g. free contents.
continue;
}
if ($(item).children().length > 0 && (! $(item).children().first().hasClass("your_price_label"))) {
// When the price tag is embedded inside the div
continue;
}
if ($(item).children().first().hasClass("your_price_label")) {
// When the price tag is embedded inside the div
item = $(item).children().eq(1);
}
if ($(item).hasClass("price-appended")) {
continue;
}
var currentPrice = parseFloat($(item).text().replaceAll(/\s/g,'').replaceAll(/,/g, '').match(/[\d,]+(?:\.\d+)?/)[0]);
var preferCurrency = GM_getValue("sec-currency", "USD");
let priceTag = currencyJSON["source"];
if (preferCurrency == priceTag) {
var convertRate = 1;
return
} else {
if (!(currencyJSON['quotes']).hasOwnProperty(priceTag + preferCurrency)) {
alert("Invalid currency mark " + preferCurrency + ".");
break;
}
var convertRate = currencyJSON['quotes'][priceTag + preferCurrency];
}
let hideOriginalPrice = GM_getValue("sec-hide-original", "0");
if (hideOriginalPrice == "0") {
$(item).append(" " + "(" + ((convertRate * currentPrice > 1e5) ? engineeringNotation(convertRate * currentPrice, 4) : (convertRate * currentPrice).toFixed(2).toString()) + " " + preferCurrency + ")");
} else {
$(item).text("");
$(item).append((convertRate * currentPrice).toFixed(2) + " " + preferCurrency);
}
$(item).addClass("price-appended");
}
}
function addCurrencyHint(currencyJSON) {
var discountNumList = $(".discount_final_price")
if (window.location.href.match(/^https\:\/\/store\.steampowered\.com\/search\/.*$/)) {
appendPrice(discountNumList, currencyJSON, true);
$(discountNumList).css("text-align", "right");
} else {
appendPrice(discountNumList, currencyJSON, false);
}
var priceList = $(".price")
appendPrice(priceList, currencyJSON, false);
var dlcPriceList = $(".game_area_dlc_price")
appendPrice(dlcPriceList, currencyJSON, false);
var salesPrice = $(".salepreviewwidgets_StoreSalePriceBox_Wh0L8")
appendPrice(salesPrice, currencyJSON, false);
var searchSubtitle = $(".match_subtitle").filter(function () {
return ($(this).parent().hasClass("match_app"));
})
appendPrice(searchSubtitle, currencyJSON, false);
}
async function initData() {
try {
const steamWebPage = await makeGetRequest("https://store.steampowered.com/app/304430/INSIDE/", false) // For fetching the priceTag
const jqSteamPage = $($.parseHTML(steamWebPage));
const priceObj = jqSteamPage.find("meta[itemprop=\"priceCurrency\"]");
if (priceObj.length < 1) {
throw new Error("Could not find the price tag!");
}
const priceTag = $(priceObj[0]).attr("content");
console.log("Your currency in Steam is " + priceTag + ".");
if (GM_getValue("sec-currency-apikey") == undefined && GM_getValue("sec-no-key-provided") == undefined) {
alert("You haven't set the API key to get currencies. Please visit https://currencylayer.com/ to get one. This alert will not shown again.");
GM_setValue("sec-no-key-provided", true);
}
let currencyJSON = {};
let refreshCurrency = false;
// Check cached data to reduce API call
try{
if (GM_getValue("sec-currency-json-cache") != undefined){
let cachedOBJ = JSON.parse(GM_getValue("sec-currency-json-cache"));
if (Math.floor(new Date().getTime() / 1000) - cachedOBJ['timestamp'] < 28800 && cachedOBJ["source"] == priceTag) {
// Cache the currency data for 8 hours
currencyJSON = cachedOBJ;
} else {
refreshCurrency = true;
}
} else {
refreshCurrency = true;
}
} catch (error) {
console.error(error);
refreshCurrency = true;
}
if (refreshCurrency) {
currencyJSON = await makeGetRequest("http://api.currencylayer.com/live?access_key=" + GM_getValue("sec-currency-apikey", "") + "&source=" + priceTag, true);
GM_setValue("sec-currency-json-cache", JSON.stringify(currencyJSON));
console.log("Currency data refeshed.");
}
if (!currencyJSON["success"]) {
try {
let error_type = currencyJSON["error"]["type"];
if (error_type == "invalid_access_key") {
alert("Invalid API key provided. Please get a new one from https://currencylayer.com/.");
GM_deleteValue("sec-currency-apikey");
location.reload();
}
} catch (error) {
console.error(error);
}
}
$(".sec-options").click(function (e) {
e.preventDefault();
if (GM_getValue("sec-currency-apikey") == undefined) {
let apiKey = prompt("Input your API key, you can get a free one from https://currencylayer.com/");
if (apiKey == "") {
alert("Invalid input.");
return;
} else {
GM_setValue("sec-currency-apikey", apiKey);
location.reload();
}
} else {
let currency = prompt("Step 1: Enter new currency: ", GM_getValue("sec-currency", "USD"));
let settingChanged = false;
let currencyQuotes = Object.keys(currencyJSON['quotes']);
currencyQuotes.forEach((element, index, thisarray) => {
thisarray[index] = element.replace(priceTag, "");
});
currencyQuotes.push(priceTag);
if (currency != null) {
if (!currencyQuotes.includes(currency)) {
alert("Invalid currency tag, avaliable input is " + currencyQuotes.join(", ") + ".");
} else {
GM_setValue("sec-currency", currency);
settingChanged = true;
}
}
let hideOriginalPrice = prompt("Step 2: Hide the original price or not? Input 1 to agree.", GM_getValue("sec-hide-original", "0"));
if (hideOriginalPrice != null) {
switch (hideOriginalPrice) {
case "1":
//hide
case "0":
GM_setValue("sec-hide-original", hideOriginalPrice);
settingChanged = true;
//show
break
default:
alert("Invalid input.");
break;
}
}
let apiKey = prompt("Step 3: Modify your API key if needed, for more details, check https://currencylayer.com/.", GM_getValue("sec-currency-apikey", ""));
if (apiKey == "") {
alert("Invalid input.");
} else if (apiKey != null) {
GM_setValue("sec-currency-apikey", apiKey);
settingChanged = true;
}
if (settingChanged) {
location.reload();
}
}
});
return currencyJSON;
} catch (error) {
console.error("An error occurred while fetching data.", error)
}
}
const sec_options_caption = GM_getValue("sec-currency-apikey") == undefined ? "SET SEC API KEY" : "SEC OPTIONS";
$("div.popup_menu").append("<a class=\"popup_menu_item sec-options\" href=\"#\"> " + sec_options_caption + " </a>");
$("div.minor_menu_items").append("<a class=\"menuitem sec-options\" href=\"#\"> " + sec_options_caption + " </a>");
const currencyJSON = await initData();
if (currencyJSON["base"] != GM_getValue("sec-currency", "USD")) {
setInterval(addCurrencyHint, 500, currencyJSON);
} else {
console.log("The currency of your account is the same as the one you wanna display, abort.");
}
})();