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// ==UserScript==
// @name         Steam market - New listings highlighter
// @namespace    http://engstrand.design
// @version      0.1
// @description  Highlights all new listnings of a specific item
// @author       Fredrik Engstrand
// @match        https://steamcommunity.com/market/listings/730/*
// @grant        GM_setValue
// @grant        GM_getValue
// ==/UserScript==

var listings = Array.prototype.slice.call(document.getElementsByClassName("market_listing_row market_recent_listing_row"));
var unique = [];

try {
	var data = JSON.parse(GM_getValue("data"));
} 
catch(e) {
	data = null;
}

function StoreListingData(array) {
	var temp = [];
		
	for (var i = 0; i < array.length; i++) {
		temp.push(array[i].id);
	}
		
	GM_setValue("data", JSON.stringify(temp));
}

if (data !== null) {
	for (var i = 0; i < listings.length; i++) {
		console.log("Listing ID: " + listings[i].id);
		if (!data.includes(listings[i].id)) {
			unique.push(listings[i]);
		}
    }
	
	if (unique.length > 0) {
		for (i = 0; i < unique.length; i++) {
			unique[i].style.backgroundColor = "#004414";
		}
	}
} 

StoreListingData(listings);

setTimeout(function() {
	for (var i = 0; i < unique.length; i++) {
		var id = unique[i].id.split("_");
		document.querySelectorAll('[data-id="'+id[1]+'"]')[0].click();
	}
}, 1000);