// $Id: func.js,v 1.16.2.15 2007/01/05 08:06:25 max Exp $

var current_taxes = [];
var product_thumbnail = document.getElementById('product_thumbnail');
var availObj = document.getElementById('product_avail');

function update_option_qtys() {
    for (var classid in names) {
        if (names[classid]['is_modifier'] == 'I' || names[classid]['is_modifier'] == 'J' || names[classid]['is_modifier'] == 'Y') {
            poValue = getPOValue(classid);
            if (names[classid]['options'])
                for(var optionid in names[classid]['options']) {
                    var qtys_holder = document.getElementById('po'+productid+'_'+classid+'_'+optionid+'qty');
                    if (qtys_holder) {
                        qtys_holder.style.display = optionid == poValue? '' : 'none';
                    }
                }
            
            // window.alert(getPOValue(classid));
            /*var qtys_holder = document.getElementById('po'+productid+'_'+classid+'q');
            var txt_holder = document.getElementById('po'+productid+'_'+classid+'text');
            if (img_holder) img_holder.style.display = opt == 'No'? 'none' : 'block';
            if (txt_holder) txt_holder.style.display = opt == 'No'? 'none' : 'block';*/
        }
    }
}

function update_image_inputs() {
    for (var classid in names) {
        if (names[classid]['is_modifier'] == 'I' || names[classid]['is_modifier'] == 'J') {
            var value = getPOValue(classid);
            var opt = names[classid]['options'][value];
            var img_holder = document.getElementById('po'+productid+'_'+classid+'image');
            var txt_holder = document.getElementById('po'+productid+'_'+classid+'text');
            var stock_holder = document.getElementById('po'+productid+'_'+classid+'stock');
            if (img_holder) img_holder.style.display = (opt == 'No' || option_is_stock (opt)) ? 'none' : 'block';
            if (txt_holder) txt_holder.style.display = (opt == 'No' || option_is_stock (opt)) ? 'none' : 'block';
            if (stock_holder) stock_holder.style.display = (!option_is_stock (opt)) ? 'none' : 'block';
        }
    }
}

function option_is_stock (opt) {
    return opt.match(/stock/i) || opt.match(/choose/i) || opt.match(/personal/i);
}

/*
    Rebuild page if some options is changed
*/

function check_options() {
    var local_taxes = [];
    var is_rebuild_wholesale = false;
    var variantid = false;

    update_image_inputs();
    update_option_qtys();
    
    for (var t in taxes)
        local_taxes[t] = taxes[t][0];
    price = default_price;

    /* Find variant */
    for (var x in variants) {
        if (variants[x][1].length == 0)
            continue;

        variantid = x;
        for (var c in variants[x][1]) {
            if (getPOValue(c) != variants[x][1][c]) {
                variantid = false;
                break;
            }
        }

        if (variantid)
            break;
    }

    /* If variant found ... */
    if (variantid) {
        price = variants[variantid][0][0];
        orig_price = variants[variantid][0][4];
        avail = variants[variantid][0][1];

        /* Get variant wholesale prices */
        if (variants[variantid][3]) {
            product_wholesale = [];
            for (var t in variants[variantid][3]) {
                var _tmp = modi_price(variants[variantid][3][t][2], cloneObject(variants[variantid][3][t][3]), variants[variantid][3][t][4]);
                product_wholesale[t] = [
                    variants[variantid][3][t][0], 
                    variants[variantid][3][t][1], 
                    _tmp[0],
                    []
                ];

                /* Get variant wholesale taxes */
                for (var c in _tmp[1]) {
                    product_wholesale[t][3][c] = _tmp[1][c];
                }
            }
            is_rebuild_wholesale = true;
        }

        /* Get variant taxes */
        for (var t in local_taxes) {
            if (variants[variantid][2][t])
                local_taxes[t] = parseFloat(variants[variantid][2][t]);
        }

        if (!product_thumbnail)
            product_thumbnail = document.getElementById('product_thumbnail');

        /* Change product thumbnail */
        if (product_thumbnail) {
            if (variants[variantid][0][2].src && variants[variantid][0][2].width > 0 && variants[variantid][0][2].height > 0) {
                if (product_thumbnail.src != variants[variantid][0][2].src) {
                    product_thumbnail.src = variants[variantid][0][2].src;
                    product_thumbnail.width = variants[variantid][0][2].width;
                    product_thumbnail.height = variants[variantid][0][2].height;
                }
            } else if (document.getElementById('product_thumbnail').src != product_image.src) {
                product_thumbnail.src = product_image.src;
                if (product_image.width > 0 && product_image.height > 0) {
                    product_thumbnail.width = product_image.width;
                    product_thumbnail.height = product_image.height;
                }
            }
        }

        /* Change product weight */
        if (document.getElementById('product_weight'))
            document.getElementById('product_weight').innerHTML = price_format(variants[variantid][0][3]);
        if (document.getElementById('product_weight_box'))
            document.getElementById('product_weight_box').style.display = parseFloat(variants[variantid][0][3]) > 0 ? "" : "none";

        /* Change product code */
        if (document.getElementById('product_code'))
            document.getElementById('product_code').innerHTML = variants[variantid][0][5];

    }

    if (pconf_price > 0)
        price = pconf_price;

    /* Find modifiers */
    var _tmp = modi_price(price, local_taxes, orig_price);
    price = _tmp[0];
    local_taxes = _tmp[1];
    if (!variantid) {
        product_wholesale = [];
        for (var t in _product_wholesale) {
            _tmp = modi_price(_product_wholesale[t][2], _product_wholesale[t][3].slice(0), _product_wholesale[t][4]);
            product_wholesale[t] = [
                _product_wholesale[t][0],
                _product_wholesale[t][1],
                _tmp[0],
                _tmp[1]
            ];
        }
        is_rebuild_wholesale = true;
    }

    /* Update taxes */
    for (var t in local_taxes) {
        if (document.getElementById('tax_'+t)) {
            document.getElementById('tax_'+t).innerHTML = currency_symbol+price_format(local_taxes[t] < 0 ? 0 : local_taxes[t]);
        }
        current_taxes[t] = local_taxes[t];
    }

    if (is_rebuild_wholesale)
        rebuild_wholesale();

    /* Update form elements */
    /* Update price */
    if (document.getElementById('product_price'))
        document.getElementById('product_price').innerHTML = currency_symbol+price_format(price < 0 ? 0 : price);

    /* Update alt. price */
    if (alter_currency_rate > 0 && alter_currency_symbol != "" && document.getElementById('product_alt_price')) {
        var altPrice = price*alter_currency_rate;
        document.getElementById('product_alt_price').innerHTML = "("+alter_currency_symbol+" "+price_format(altPrice < 0 ? 0 : altPrice)+")";
    }

    /* Update Save % */
    if (document.getElementById('save_percent') && document.getElementById('save_percent_box') && list_price > 0 && dynamic_save_money_enabled) {
        var save_percent = Math.round(100-(price/list_price)*100);
        if (save_percent > 0) {
            document.getElementById('save_percent_box').style.display = '';
            document.getElementById('save_percent').innerHTML = save_percent;
        } else {
            document.getElementById('save_percent_box').style.display = 'none';
            document.getElementById('save_percent').innerHTML = '0';
        }
    }

    /* Update product quantity */
    if (document.getElementById('product_avail_txt')) {
        if (avail > 0) {
            document.getElementById('product_avail_txt').innerHTML = substitute(txt_items_available, "items", (variantid ? avail : product_avail));
        } else {
            document.getElementById('product_avail_txt').innerHTML = lbl_no_items_available;
        }
    }

    if ((mq > 0 && avail > mq+min_avail) || is_unlimit)
        avail = mq+min_avail-1;

    var select_avail = min_avail;
    /* Update product quantity selector */
    if (!availObj)
        availObj = document.getElementById('product_avail');

    if (availObj && availObj.tagName.toUpperCase() == 'SELECT') {
        if (!isNaN(min_avail) && !isNaN(avail)) {
            var first_value = -1;
            if (availObj.options[0])
                first_value = availObj.options[0].value;

            if (first_value == min_avail) {

                /* New and old first value in quantities list is equal */
                if ((avail-min_avail+1) != availObj.options.length) {
                    if (availObj.options.length > avail) {
                        var cnt = availObj.options.length;
                        for (var x = (avail < 0 ? 0 : avail); x < cnt; x++)
                            availObj.options[availObj.options.length-1] = null;
                    } else {
                        var cnt = availObj.options.length;
                        for (var x = cnt+1; x <= avail; x++)
                            availObj.options[cnt++] = new Option(x, x);
                    }
                }
            } else {

                /* New and old first value in quantities list is differ */
                while (availObj.options.length > 0)
                    availObj.options[0] = null;
                var cnt = 0;
                for (var x = min_avail; x <= avail; x++)
                    availObj.options[cnt++] = new Option(x, x);
            }
            if (availObj.options.length == 0)
                availObj.options[0] = new Option(txt_out_of_stock, 0);
        }
        select_avail = availObj.options[availObj.selectedIndex].value;
    }

    check_wholesale(select_avail);

    if ((alert_msg == 'Y') && (min_avail > avail))
        alert(txt_out_of_stock);
    
    /* Check exceptions */
    var ex_flag = check_exceptions();
    if (!ex_flag && (alert_msg == 'Y'))
        alert(exception_msg);
            
    if (document.getElementById('exception_msg'))
        document.getElementById('exception_msg').innerHTML = (ex_flag ? '' : exception_msg_html+"<br /><br />");

    return true;
}

/*
    Calculate product price with price modificators 
*/
function modi_price(_price, _taxes, _orig_price) {
    var return_price = round(_price, 2);
    
    if (!availObj)
        availObj = document.getElementById('product_avail');

    /* List modificators */
    for (var x2 in modifiers) {
        var value = getPOValue(x2);
        if (!value || !modifiers[x2][value])
            continue;

        /* Get selected option */
        var elm = modifiers[x2][value];
        
        /* Choconet hack for qty options */
        
        var price_modifier = elm[0];
        
        var option_qty = 0;
        
        if (elm[4].length) {
            var custom_qty = document.getElementById('option_qty_'+value);
            if (custom_qty) {
                if (!isNaN(parseInt(custom_qty.value)) && parseInt(custom_qty.value)) option_qty = parseInt(custom_qty.value);
            } else option_qty = 0;
            if (!option_qty) option_qty = parseInt(availObj.value);
            if (!option_qty || isNaN(option_qty)) option_qty = 0;
            for (var i in elm[4]) {
                if (option_qty >= parseInt(elm[4][i].from) && (!elm[4][i].to.length || option_qty <= parseInt(elm[4][i].to))) {
                    if (!isNaN(parseFloat(elm[4][i].price_modifier))) {
                        price_modifier = parseFloat(elm[4][i].price_modifier);
                        //alert(price_modifier);
                        /*
                            Found price modifier - change option text...
                        */
                        var optionHolder = product_option(x2);
                        if (optionHolder && optionHolder.tagName && optionHolder.tagName.toUpperCase() == 'SELECT') {
                            //alert("1");
                            for (var j = 0; j < optionHolder.options.length; j++) {
                                if (optionHolder.options[j].value == value) {
                                    //alert("2: "+elm[4][i].label);
                                    if (elm[4][i].label) optionHolder.options[j].innerHTML = elm[4][i].label;
                                }
                            }
                        }
                        break;
                    }
                }
            }
        } else {
            if (!option_qty) option_qty = parseInt(availObj.value);
            if (!option_qty || isNaN(option_qty)) option_qty = 0;
        }
        
        if (elm[1] == '$') return_price += price_modifier;
        if (elm[1] == '%') return_price += _price*price_modifier/100;
        if (elm[1] == 'f') {
            return_price += option_qty? price_modifier/option_qty : 0;
        }
        
        /*
        if (elm[1] == '$') return_price += elm[0];
        if (elm[1] == '%') return_price += _price*elm[0]/100;
        */

        /* Get tax extra charge */
        for (var t2 in _taxes) {
            if (elm[2][t2]) {
                _taxes[t2] += parseFloat(elm[1] == '$' ? elm[2][t2] : (_orig_price*elm[2][t2]/100));
            }
        }
    }

    return [return_price, _taxes];
}

/*
    Check product options exceptions
*/
function check_exceptions() {
    if (!exceptions)
        return true;

    /* List exceptions */
    for (var x in exceptions) {
        if (isNaN(x))
            continue;

        var found = true;
        for (var c in exceptions[x]) {
            var value = getPOValue(c);
            if (!value)
                return true;

            if (value != exceptions[x][c]) {
                found = false;
                break;
            }
        }
        if (found)
            return false;
    }

    return true;
}

/*
    Rebuild wholesale tables
*/
function rebuild_wholesale() {

    var obj = document.getElementById('wl_table');
    if (!obj)
        return false;

    /* Clear wholesale span object if product wholesale prices service array is empty */
    if (!product_wholesale || product_wholesale.length == 0) {
        obj.innerHTML = "";
        return false;
    }

    /* Display headline */
    var str = '';
    var i = 0;
    for (var x in product_wholesale) {
        if (product_wholesale[x][0] == 0)
            continue;

        if (i == 0)
            str += '<br /><table cellpadding="2" cellspacing="2"><tr class="TableHead"><td align="right"><b>'+lbl_quantity+':&nbsp;</b></td>';

        str += '<td>'+product_wholesale[x][0];
        if (x == product_wholesale.length-1) {
            str += '+';
        } else if (product_wholesale[x][0] < product_wholesale[x][1]) {
            str += '-'+product_wholesale[x][1];
        }
        str += '&nbsp;'+(product_wholesale[x][0] == 1 ? lbl_item : lbl_items)+'</td>';
        i++;
    }

    if (i == 0)
        return false;

    /* Display wholesale prices taxes */
    var tax_str = '';
    if (taxes.length > 0) {
        for (var x in taxes) {
            if (current_taxes[x] > 0)
                tax_str += substitute(lbl_including_tax, 'tax', taxes[x][1])+'<br />';
        }
    }

    /* Display wholesale prices */
    str += '</tr><tr bgcolor="#EEEEEE"><td align="right"><b>'+lbl_price+(tax_str.length > 0 ? '*' : '')+':&nbsp;</b></td>';
    for (var x in product_wholesale) {
        if (product_wholesale[x][0] == 0)
            continue;
        str += '<td>'+price_format(product_wholesale[x][2] < 0 ? 0 : product_wholesale[x][2])+'</td>';
    }

    str += '</tr></table>';

    if (tax_str.length > 0)
        str += '<br /><table><tr><td class="FormButton" valign="top"><b>*'+txt_note+':</b>&nbsp;</td><td nowrap="nowrap" valign="top">'+tax_str+'</td></tr></table>';

    str += '<br />';
    obj.innerHTML = str;

    return true;
}

/*
    Display current wholesale price as product price
*/
function check_wholesale(qty) {
    if (product_wholesale.length == 0)
        return true;

    var wl_taxes = current_taxes.slice(0);
    var wl_price = price;
    var found = false;
    for (var x = 0; x < product_wholesale.length; x++) {
        if (product_wholesale[x][0] <= qty && (product_wholesale[x][1] >= qty || product_wholesale[x][1] == 0)) {
            wl_price = product_wholesale[x][2];
            wl_taxes = product_wholesale[x][3].slice(0);
            found = true;
        }
        if (document.getElementById('wp'+x)) {
            var wPrice = price-default_price+product_wholesale[x][2];
            document.getElementById('wp'+x).innerHTML = currency_symbol+price_format(wPrice < 0 ? 0 : wPrice);
        }
    }

    if (document.getElementById('product_price'))
        document.getElementById('product_price').innerHTML = currency_symbol+price_format(wl_price < 0 ? 0 : wl_price);
    if (alter_currency_rate > 0 && alter_currency_symbol != "" && document.getElementById('product_alt_price')) {
        var altPrice = wl_price*alter_currency_rate;
        document.getElementById('product_alt_price').innerHTML = "("+alter_currency_symbol+" "+price_format(altPrice < 0 ? 0 : altPrice)+")";
    }

    /* Update Save % */
    if (document.getElementById('save_percent') && document.getElementById('save_percent_box') && list_price > 0 && dynamic_save_money_enabled) {
        var save_percent = Math.round(100-((wl_price < 0 ? 0 : wl_price)/list_price)*100);
        if (save_percent > 0) {
            document.getElementById('save_percent_box').style.display = '';
            document.getElementById('save_percent').innerHTML = save_percent;
        } else {
            document.getElementById('save_percent_box').style.display = 'none';
            document.getElementById('save_percent').innerHTML = '0';
        }
    }


    for (var x in taxes) {
        if (document.getElementById('tax_'+x) && wl_taxes[x] && current_taxes[x]) {
            document.getElementById('tax_'+x).innerHTML = currency_symbol+price_format(wl_taxes[x] < 0 ? 0 : wl_taxes[x]);
        }
    }

    return true;
}

/*
    Get product option value
*/
function getPOValue(c) {
    if (!document.getElementById('po'+c) || document.getElementById('po'+c).tagName.toUpperCase() != 'SELECT')
        return false;
    return document.getElementById('po'+c).options[document.getElementById('po'+c).selectedIndex].value;
}

/*
    Get product option object by class name / class id
*/
function product_option(classid) {
    if (!isNaN(classid))
         return document.getElementById("po"+classid);

    if (!names)
        return false;

    for (var x in names) {
        if (names[x]['class_name'] != classid)
            continue;
        return document.getElementById('po'+x);
    }

    return false;
}

/*
    Get product option value by class name / or class id
*/
function product_option_value(classid) {
    var obj = product_option(classid);
    if (!obj)
        return false;

    if (obj.type != 'select-one')
        return obj.value;

    var classid = parseInt(obj.id.substr(2));
    var optionid = parseInt(obj.options[obj.selectedIndex].value);
    if (names[classid] && names[classid]['options'][optionid])
        return names[classid]['options'][optionid];

    return false;
}