// ==UserScript==
// @name		Steam Community Market Bot
// @namespace	//benio.me
// @version		2.0
// @description	Instant buy. Sell and buy bot
// @match		http://steamcommunity.com/market/*
// @copyright	//benio.me
// @require		http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js
// ==/UserScript==



/* USAGE WARNING
 * 
 * Note, using this Steam Community Market Bot violates Valve`s Steam Market usage rules.
 * Bot, as of jQuery UserScript child, simulates very active steam community market user,
 * avoiding Bot typicall activity, making it`s usage just a time safe and leaving a risk.
 */



//////////////////////////////////////////
//										//
//	Steam Community Market Bot			//
//										//
//	@author		Paweł Benetkiewicz		//
//	@homepage	//benio.me				//
//										//
//////////////////////////////////////////



/*
	@desc	convert price to decimal format
    @param	float	n	number to convert
    @param	int		k	digits after dot
    @return	float	prize in decimal format
*/
Math.decimal = function(n, k){
    var factor = Math.pow(10, k+1);
    n = Math.round(Math.round(n*factor)/10);
    return n/(factor/10);
}
 
jQuery.support.cors = true;
jQuery(document).ready(function($){
    // Change prices format
    /*$('.market_listing_price').each(function(){
		$(this).html($.trim($(this).html().replace(' ', '').replace(',', '.').replace('€', ' €')));
    });
 
 	// Show clean prices and fees
    $('.market_listing_right_cell.market_listing_their_price').each(function(){
        var total=Math.decimal($.trim($(this).find('.market_listing_price.market_listing_price_with_fee').html()).slice(0, -2).replace(' ', '').replace(',', '.'), 2);
        var subtotal=Math.decimal($.trim($(this).find('.market_listing_price.market_listing_price_without_fee').html()).slice(0, -2).replace(' ', '').replace(',', '.'), 2);
        var fee=Math.decimal(total-subtotal, 2);
 
        $(this).find('.market_listing_price.market_listing_price_without_fee').each(function(){
            $(this).css({
                'display': 'inline',
                'color': 'grey'
            })
            .insertBefore($(this).prev())
            .after('<br>')
            .after($('<span>').addClass('market_listing_price').html(fee+' &euro;').css({
                'display': 'inline',
                'color': 'silver'
            }))
            .after('<br>');
        });
    });*/
 
    // Instant Buy
    $('a.item_market_action_button.item_market_action_button_green')
    	.click(function(){
            var listingid=$(this).attr('href').split("'")[3];
 			
            // buys an item and reloads site
            new Ajax.Request( 'http://steamcommunity.com/market/buylisting/' + listingid, {
                method: 'post',
                parameters: {
                    'sessionid': g_sessionID,
                    'currency': g_rgWalletInfo['wallet_currency'],
                    'subtotal': g_rgListingInfo[listingid]['converted_price'],
                    'fee': g_rgListingInfo[listingid]['converted_fee'],
                    'total': g_rgListingInfo[listingid]['converted_price'] + g_rgListingInfo[listingid]['converted_fee']
                },
                onSuccess: function( transport ) { location.reload(); },
                onFailure: function( transport ) { location.reload(); }
            });
 
        	return false;
        })
    
    // settings start
    var shopping_limit=450;		// soft limit of shoppings (to safe some maney at account)
    var item_price_limit=75;	// highest price of item we can afford to buy
    
    // sites rotator // Steam items name identifiers behind the /753/
    var items=new Array(
        // Portal 2
        'Chell',
        'Destruction',
        'Finale',
        'GlaDOS',
        'Intro%20%28Trading%20Card%29',
        'The%20Lab',
        'Mannequin',
        'Underground',
        
        // Dota 2
        'Bounty%20Hunter',
        'Phantom%20Lancer',
        'Razor',
        'Riki',
        'Tidehunter%20%28Trading%20Card%29',
        'Tiny',
        'Tusk',
        'Vengeful%20Spirit%20%28Trading%20Card%29'
    );
    // settings end
 
    // Auto Buy
    if(g_rgWalletInfo['wallet_balance']>=shopping_limit){
        // we redresh site if no good offerts
        var refresh=0;
     	
        // limit checking for Steam (753) items only
        if(location.href.substr(0,46)=='http://steamcommunity.com/market/listings/753/'){
            // random refresh time
            refresh=Math.random()*6000+4000;
            
            // get 2 first offer`s prices
            var prices=new Array(2), i=0;
            for(listingid in g_rgListingInfo){
                if(g_rgListingInfo[listingid]['converted_price']){
                	prices[i]=listingid;
                	if(++i>=2)break;
                }
            }
            // check if there are at least 2 offers and the we can stand for buy item
            if(i==2 && g_rgListingInfo[prices[0]]['converted_price'] <= item_price_limit){
                if(
                        g_rgListingInfo[prices[0]]['converted_price']
                    +	g_rgListingInfo[prices[0]]['converted_fee'] + 1
                    <	g_rgListingInfo[prices[1]]['converted_price']
                    
                    // netto price of 2nd cheapest offer must be less than brutto price of the cheapest offer plus minimum one to get profit
                ){
                    // finally price to pay for item
                    var total=g_rgListingInfo[prices[0]]['converted_price'] + g_rgListingInfo[prices[0]]['converted_fee'];
                    
                    // Buy item
                    new Ajax.Request( 'http://steamcommunity.com/market/buylisting/' + prices[0], {
                        method: 'post',
                        parameters: {
                            'sessionid': g_sessionID,
                            'currency': g_rgWalletInfo['wallet_currency'],
                            'subtotal': g_rgListingInfo[prices[0]]['converted_price'],
                            'fee': g_rgListingInfo[prices[0]]['converted_fee'],
                            'total': total
                        },
                        onSuccess: function( transport ) {
                            // retrieve additional info
                            var lista=$('#listing_'+prices[0]+' a.item_market_action_button.item_market_action_button_green').attr('href').split("'");
                            var contextid=lista[5];
                            var assetid=lista[7];
                            
                            // Sell item at price minimum less than 2nd cheapest offer, so we have high chance to sell item, having the cheapiest price` offer
                            new Ajax.Request( 'http://steamcommunity.com/market/sellitem/', {
                                method: 'post',
                                parameters: {
                                    'sessionid': g_sessionID,
                                    'appid': 753,
                                    'contextid': contextid,
                                    'assetid': assetid,
                                    'amount': 1,
                                    'price': g_rgListingInfo[prices[1]]['converted_price']-1
                                },
                                
                                // refresh site after making a new offer, even if error occured, we set up limit earlier
                                onSuccess: function( transport ) { document.location.href='http://steamcommunity.com/market/listings/753/'+items[((Math.random()*items.length)|0)]; },
                        		onFailure: function( transport ) { document.location.href='http://steamcommunity.com/market/listings/753/'+items[((Math.random()*items.length)|0)]; }
                            });
                        },
                        // refresh site on failure, fe. if somebody bought item before us
                        onFailure: function( transport ) { document.location.href='http://steamcommunity.com/market/listings/753/'+items[((Math.random()*items.length)|0)]; }
                    });
                    
                    // we shall wait for Ajax response, dont refresh site automatically
                    refresh=0;
                }
            }
        }
     
        // Auto Recheck
        if(refresh){
            // we load another site if no good offers available to get profit
            window.setTimeout(function(){ document.location.href='http://steamcommunity.com/market/listings/753/'+items[((Math.random()*items.length)|0)]; }, refresh);
        }
    }
});