market-history.user.js

// ==UserScript==
// @name Steam Market History Export
// @author KorDen
// @version 0.2.3
// @grant none
// @include *//steamcommunity.com/market/
// ==/UserScript==

( function() {
	$J('.pick_and_sell_button > .item_market_action_button').before('<a href="javascript:void(0)" class="item_market_action_button item_market_action_button_blue nodisable" onclick="exportMarketHistory();" id="exportHistoryBtn"><span class="item_market_action_button_edge item_market_action_button_left"></span><span class="item_market_action_button_contents" id="exportHistoryTxt">History Export</span><span class="item_market_action_button_edge item_market_action_button_right"></span><span class="item_market_action_button_preload"></span></a> ');
})();

contentEval ( function get_http_s(url, callback) {
		var http = new window.XMLHttpRequest();
		http.onreadystatechange = function () {
			if (this.readyState == 4)
				callback(this.responseText, this.status);
		};
		http.open('GET', url, true);
		http.send(null);
} );

contentEval ( 'var csvData = "", history = "";' );

contentEval ( function exportMarketHistory() {
	var loops = 0;
	var count = 500;
	var i = 1;
	var lastError = "L";
	var tableFooter='</div></div>';
	var current = 0, total = 0;
	var months=['skipme','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
	var curYear, curMonth = 13;
	
	{
		var date = new Date();
		curYear = date.getFullYear();
	}
	
	$J('#myListings > div').hide();
	$J('.market_tab_well_tab').attr('class','market_tab_well_tab market_tab_well_tab_inactive');
	if($J('#tabHistoryExport').length == 0) {
		$J('#tabContentsMyMarketHistory').after('\
		<div id="tabHistoryExport"  class="my_listing_section market_content_block">\
			<span class="my_market_header_active">History export tool</span>\
			<div id="tabHistoryExportContent">\
				<div class="my_listing_section market_content_block"><img src=//steamcommunity.com/public/images/login/throbber.gif style="position:relative;top:10px;"> <span id="hLoaderInfo">Loading info...</span></div>\
			</div>\
		</div>')
	} else {
		$J('#tabHistoryExport').show();
	}
	
	get_http_s("//steamcommunity.com/market/myhistory/render/?query=&start=0&count=1&l=english", function (txt, status) {
		if(status == 200) {
			total = JSON.parse(txt)["total_count"];	
			loops = Math.ceil(total / count);
			$J('#tabHistoryExportContent').html('<br>\
			Total: ' + total + '<br>\
			<span id="hLoaderInfo"></span>');
			$J("#tabHistoryExportContent > .market_listing_table_header").hide();
			doExport();
		}
	});
	
	function doExport() {
		$J('#exportHistoryBtn').removeAttr('onclick');
		$J('#exportHistoryBtn').attr('class', 'item_market_action_button item_market_action_button_blue btn_disabled');
		csvData = "#;Item Type;Item;Price;Acted;Actor URL;Transaction ID\n";
		current = total + 1;
		if (loops) {
			processor();
		} else {
			parseDone();
		}
		
	}
	function processJSON(data) {
		market = '<div>' + data['results_html'] + '</div>';
		$J(market).find(".market_listing_row").each(function () {
			current--;
			var row = $J(this);
			if(row.attr("id").indexOf("_event_") == -1) {
				var transId = $J(this).attr("id").match(/history_row_(\d+)_/)[1];
				var type = row.find(".market_listing_game_name").text().replace(';','_');
				var item = row.find(".market_listing_item_name").text().replace('\n','');
				//var listed = row.find(".market_listing_listed_date:last").text().trim();
				var acted = row.find(".market_listing_listed_date:first").text().trim();
				var price = row.find(".market_listing_price").text();
				var gainorloss = row.find(".market_listing_gainorloss").text();
				//var actor = row.find(".market_listing_whoactedwith_name_block").text().trim();
				var actor_url = row.find(".market_listing_owner_avatar a").attr('href');
				
				acted = acted.split(' ');
				var month = months.indexOf(acted[1]);
				
				if(curMonth < month)
					curYear--;
				
				curMonth = month;
				acted = acted[0] + '.' + month + '.' + curYear;

				gainorloss = (gainorloss.trim() == '+' ? '-' : '+');
				price = price.trim().replace(/( pуб.|\$)/,'');
				csvData += current + ';' + type + ';' + item + ';' + gainorloss+price.trim() + ';' + acted + ';' + actor_url + ';' + transId + '_;\n';
			}
		});
	}
	
	function parseDone() {
		$J('#hLoaderInfo').html('History loaded. You can now export it to CSV.<br>\
		<a href="data:application/csv;charset=utf-8,' + encodeURIComponent(csvData) + '" class="btn_small btn_darkblue_white_innerfade" id="exportCSVBtn" download="markethistory.csv"><span>Export to CSV</span></a>');
	}
	
	function processor() {
		$J('#hLoaderInfo').html('<img src=//steamcommunity.com/public/images/login/throbber.gif style="position:relative;top:10px;"> ' +lastError + 'oading ' + i + ' of ' + loops + ' history blocks...');
		get_http_s("//steamcommunity.com/market/myhistory/render/?query=&l=english&start=" + (count * (i - 1)) + "&count=" + count, function (txt, status) {
			if(status == 200) {
				txt = txt.replace(/[ ]src=/g," data-src=");
				var data = JSON.parse(txt);
				if(!data || !data['results_html'] || data['results_html'].indexOf("There was an error", 48) >-1) {
					i--;
					lastError = 'No result, rel';
				} else {
					lastError = 'L';
					processJSON(data);
				}
			} else {
				i--;
				lastError = 'Error ' + status + ', rel';
			}
			if (i == loops) {
				parseDone();
			} else {
				i++;
				processor();
			}
		});
	}
} );

function contentEval(source) {
	var script = document.createElement('script');
	script.setAttribute("type", "application/javascript");
	script.textContent = source;
	document.body.appendChild(script);
}