/*-----------------------------------------------------------------------------
 * Javascript Functions
 *-----------------------------------------------------------------------------
 * dynamic_product_prices.js
 *-----------------------------------------------------------------------------
 * Author:   Estelle Winterflood
 * Email:    cubecart@expandingbrain.com
 * Store:    http://cubecart.expandingbrain.com
 *
 * Date:     January 10, 2008
 * Updated:  March 1, 2009
 * Compatible with CubeCart Version:  4.x.x
 *-----------------------------------------------------------------------------
 * SOFTWARE LICENSE AGREEMENT:
 * You must own a valid license for this modification to use it on your
 * CubeCart™ store. Licenses for this modification can be purchased from
 * Estelle Winterflood using the URL above. One license permits you to install
 * this modification on a single CubeCart installation only. This non-exclusive
 * license grants you certain rights to use the modification and is not an
 * agreement for sale of the modification or any portion of it. The
 * modification and accompanied documentation may not be sublicensed, sold,
 * leased, rented, lent, or given away to another person or entity. This
 * modification and accompanied documentation is the intellectual property of
 * Estelle Winterflood.
 *-----------------------------------------------------------------------------
 * DISCLAIMER:
 * The modification is provided on an "AS IS" basis, without warranty of
 * any kind, including without limitation the warranties of merchantability,
 * fitness for a particular purpose and non-infringement. The entire risk
 * as to the quality and performance of the Software is borne by you.
 * Should the modification prove defective, you and not the author assume 
 * the entire cost of any service and repair. 
 *-----------------------------------------------------------------------------
 */

function ale(f) {
	var old = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = f;
	} else {
		window.onload = function() {
			old();
			f();
		}
	}
}
function st(e, t) {
	if (e) {
		e.innerText = t;
		e.textContent = t;
	}
}
function gv(o) {
	var a = [];
	for ( var i = 0; i < o.length; ++i) {
		for ( var j = 0; o[i] && j < o[i].length; ++j) {
			if (o[i][j].options)
				a.push(o[i][j].options[o[i][j].selectedIndex].value);
			else if (o[i][j].checked)
				a.push(o[i][j].value);
			else if (o[i][j].length) {
				for ( var k = 0; o[i][j] && k < o[i][j].length; ++k) {
					if (o[i][j][k].options)
						a
								.push(o[i][j][k].options[o[i][j][k].selectedIndex].value);
					else if (o[i][j][k].checked)
						a.push(o[i][j][k].value);
				}
			}
		}
	}
	return a;
}
function sh(e, h) {
	if (e) {
		e.innerHTML = h;
		e.htmlContent = h;
	}
}

// Safe guard - prevent javascript errors from incorrect installation
function dpCheckInstallation(showAlert) {
	if (typeof dp_options == 'undefined'
	// global store settings
	|| typeof dp_usePP == 'undefined' || typeof dp_useQE == 'undefined'
			|| typeof dpFormatPrice == 'undefined'
			// product settings
			|| typeof dp_price == 'undefined'
			|| typeof dp_element == 'undefined'
			|| typeof dp_optionPrices == 'undefined'
			|| typeof dp_optionSymbols == 'undefined'
			|| typeof dp_options == 'undefined') {
		// if these javascript variables are not set -- indicates installation
		// error!
		if (showAlert)
			alert("Message for the store owner...\n\nDynamic Product Prices has not been installed correctly, make sure all new files are uploaded successfully then carefully check:\n- styleTemplates/content/viewProd.tpl");

		return false;
	}
	return true;
}

function dpUpdatePrice() {
	if (!dpCheckInstallation(true)) {
		return;
	}

	var price = dp_price;
	var priceChange = 0;
	var rateChange = 0;
	var a = gv(dp_options);
	var incompleteSelection = false;
	for ( var i = 0; i < a.length; ++i) {
		if (a[i].length == 0 || a[i].charAt(0) == '0') {
			/* Integration with Force Selection of Product Options */
			incompleteSelection = true;
		} else if (a[i] in dp_optionPrices) {
			var optPrice = dp_optionPrices[a[i]];
			var optSymbol = dp_optionSymbols[a[i]];
			/* Integration with Percentage Price Product Options */
			if (dp_usePP && optSymbol == '%') {
				rateChange += optPrice / 100;
			} else if (optPrice > 0) {

				if (optSymbol == '+') {
					priceChange += optPrice;
				} else if (optSymbol == '-')
					priceChange -= optPrice;
				/* Integration with Quick Edit Product Options */
				else if (dp_useQE && optSymbol == '=')
					price = optPrice;
			}
		}
	}

	/* Integration with Force Selection of Product Options */
	/*
	 * if (incompleteSelection) { var sp = document.getElementById(dp_element);
	 * st(sp,'Choose from options below'); return; }
	 */

	/* Integration with Percentage Price Product Options */
	if (rateChange != 0.0) {
		price = price + (price * rateChange);
	}
	price = price + priceChange;

	/* Display price */
	var sp = document.getElementById(dp_element);
	st(sp, dpFormatPrice(price));
}