node-steamcommunity/classes/CMarketSearchResult.js

var SteamCommunity = require('../index.js');
var Cheerio = require('cheerio');

SteamCommunity.prototype.marketSearch = function(options, callback) {
	var qs = {};
	
	if(typeof options === 'string') {
		qs.query = options;
	} else {
		qs.query = options.query || '';
		qs.appid = options.appid;
		qs.search_descriptions = options.searchDescriptions ? 1 : 0;
		
		if(qs.appid) {
			for(var i in options) {
				if(['query', 'appid', 'searchDescriptions'].indexOf(i) != -1) {
					continue;
				}
				
				// This is a tag
				qs['category_' + qs.appid + '_' + i + '[]'] = 'tag_' + options[i];
			}
		}
	}
	
	qs.start = 0;
	qs.count = 100;
	qs.sort_column = 'price';
	qs.sort_dir = 'asc';
	performSearch.call(this, this.httpRequest, qs, [], callback);
};

function performSearch(request, qs, results, callback) {
	var self = this;
	request({
		"uri": "https://steamcommunity.com/market/search/render/",
		"qs": qs,
		"headers": {
			"referer": "https://steamcommunity.com/market/search"
		},
		"json": true
	}, function(err, response, body) {
		if (err) {
			callback(err);
			return;
		}
		
		if(!body.success) {
			callback(new Error("Success is not true"));
			return;
		}
		
		if(!body.results_html) {
			callback(new Error("No results_html in response"));
			return;
		}
		
		var $ = Cheerio.load(body.results_html);
		if($('.market_listing_table_message').length > 0) {
			callback(new Error($('.market_listing_table_message').text()));
			return;
		}
		
		var rows = $('.market_listing_row_link');
		for(var i = 0; i < rows.length; i++) {
			results.push(new CMarketSearchResult($(rows[i])));
		}
		
		if(body.start + body.pagesize >= body.total_count) {
			callback(null, results);
		} else {
			qs.start += body.pagesize;
			performSearch.call(self, request, qs, results, callback);
		}
	}, "steamcommunity");
}

function CMarketSearchResult(row) {
	var match = row.attr('href').match(/\/market\/listings\/(\d+)\/(.+)/);
	
	this.appid = parseInt(match[1], 10);
	this.market_hash_name = decodeURIComponent(match[2]);
	this.image = row.find('.market_listing_item_img').attr('src').match(/^https?:\/\/[^\/]+\/economy\/image\/[^\/]+\//)[0];
	this.price = parseInt(row.find('.market_listing_their_price .market_table_value span').text().replace(/[^\d]+/g, ''), 10);
	this.quantity = parseInt(row.find('.market_listing_num_listings_qty').text().replace(/[^\d]+/g, ''), 10);
}