// ==UserScript==
// @name        Item Counter
// @namespace   localhost
// @description Adds Item Counters To TF2B
// @include     http://tf2b.com/tf2/*
// @match     http://tf2b.com/tf2/*
// @version     2.06
// ==/UserScript==

// pluralize on n!=1.   Key -> Keys,  Gibus -> Gibuses, Max -> Maxes, Bill's -> Bill's, REF -> REF, Buds -> Buds (per tf2 custom)
function s(n, thing) {
	return '' + n + ' ' + (n==1 ? thing : (thing+'s').replace(/([sx])s$/, '$1es').replace(/'ses$/, "'s").replace(/^REFs/, 'REF').replace(/^Budses/, 'Buds'));
}

// add a count and label to the summary
function printTotal(n, name) {
	// bunch of possible dividers.  last one defined is what gets used. default is space.
	var divider;
	divider=' || ';
	divider=' ◼ '; // unicode solid medium square
	divider='   '; // extra-wide space
	divider=' ║ '; // unicode double vertical line
	divider=' ┃ '; // unicode heavy vertical line
	divider=' ';
  	divider=' // ';


	var snap=document.evaluate('//h5',document,null,XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,null);
	for (var i=0; i<snap.snapshotLength; i++) {
		var h5=snap.snapshotItem(i);
		if(h5.innerHTML.match(/Items:/)) {
			// unsafeWindow.console.log(h5.innerHTML + '-'+name + '=' + n);
			if (n || (name && name.match(/^[^v]/)) ) {
				h5.innerHTML = h5.innerHTML + divider + s(n,name);
			}
		}
	}
}

// remove elements matching xpath spec
function removeElement(ElementXpath) {
	var alltags = document.evaluate(ElementXpath,document,null,XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,null);
	for (i=0; i<alltags.snapshotLength; i++) {
		element = alltags.snapshotItem(i);
		element.parentNode.removeChild(element); // Remove this element from its parent.
	}
} 

// return count by name - use this for things you can't rename
function countItems(name) {
	return document.evaluate('html/body/section[@id="backpack"]/ul/li[@data-top="' + name + '"]',document,null,XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,null).snapshotLength;
}

// count and print vintage/non-vintage something by image - use for rename-able items
function printCountImages(name, nickname) {
	var n = document.evaluate('html/body/section[@id="backpack"]/ul/li[contains(@style,"/' + name + '.") and @class!="q3"]',document,null,XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,null).snapshotLength;
	printTotal(n, nickname ? nickname: name);

	n = document.evaluate('html/body/section[@id="backpack"]/ul/li[contains(@style,"/' + name + '.") and @class="q3"]',document,null,XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,null).snapshotLength;
	printTotal(n, 'v.' + (nickname ? nickname : name) );
}

// anything that updates the totals line should go in here, to be run on every refresh
function updateTotals() {
	printTotal(countItems("Mann Co. Supply Crate Key"), 'Key');

	// REF display follows tf2 custom of truncating repeating decimal (".66") instead of tf2b behaviour of rounding (".67")
	printTotal( ('' + Math.floor(100*(countItems("Refined Metal") + countItems("Reclaimed Metal")/3 + countItems("Scrap Metal")/9))/100).replace(/^(\d+)$/,'$1.00'), 'REF');

	printCountImages("earbuds", 'Buds');
	printCountImages("demo_bill", "Bill's");
	printCountImages("medic_ttg_max", "Max's");

	// count other stuff - anything that can be renamed should be counted with printCountImages (slower) instead of printTotal(countItems('...', '...')) (faster)
	// printTotal('&nbsp;','');
	// printCountImages("medic_mask", 'ppm');
	// printCountImages("medic_tyrolean", 'vt');
	// printTotal('&nbsp;','');
	// printTotal(countItems("Operator's Overalls"), 'oo');
	// printTotal(countItems("Waterlogged Lab Coat"), 'wlc');
	// printTotal(countItems("Balaclavas Are Forever"), 'baf');
	// printTotal(countItems("An Extraordinary Abundance of Tinge"), 'w');
	// printTotal('&nbsp;','');
    printTotal(countItems("Backpack Expander"), 'BP Expander');
	// printTotal('&nbsp;','');
}


// redefine tf2b's every-10-minutes pageUpdate to include our updates, and re-init the interval timer
// as this script and the page itself (incl. tf2b.js ) are in different scopes, need to re-define updateTotals() and all functions called by it in this script element
var script=document.createElement('script');
script.type='text/javascript';
script.innerHTML= s.toString() + printTotal.toString() + updateTotals.toString() + printCountImages.toString() + countItems.toString() + '; if(!getCookie("norefresh")) { clearInterval(rtimer); rtimer=setInterval(function(){pageUpdate();updateTotals()},10*60000); }';
document.getElementsByTagName('head')[0].appendChild(script); 

// one-time stuff goes here - run on initial page load
updateTotals();

// reduce LI margin from 4px to 3px to allow zoom-out 
var css = document.createElement("style");
css.type = "text/css";
css.innerHTML = "li { margin: 3px; }";

// bigger font, requires deleting "In Game: ___" display to avoid overlap
// css.innerHTML = css.innerHTML + " h5 { font-family:Arial,sans-serif; font-size:100% }";
// removeElement('//h5[@id="gamedata"]');

document.body.appendChild(css);

// other crap - uncomment as you please
removeElement('//div[@id="motd"]');