Notes

var mooPOS = new Class({
Implements: [Events, Options],

options: {
tax_rate: .09,
no_tax: [],
payment_methods: ['cash', 'credit', 'check'],
cc_minimum: 5,
cc_surcharge: .5,
cc_surcharge_option: false,
dept_cert: 0,
dept_fee: 0,
dept_book: 0,
dept_merch: 0
},

initialize: function(buttons, webroot, options){
this.setOptions(options);
this.buttons = buttons;
this.webroot = webroot;
this.purchase = Object();
this.highlighted_buttons = Array();
this.href = 'javascript:void(0);';
this.build();
},

build: function() {
// Add item buttons
Object.each(this.buttons, function(tab_content, tab_name){
var h1 = new Element('h1').set('html', tab_name.replace('_', ' ')).inject($('tabs'));
var div = new Element('div').inject($('tabs'));
Object.each(tab_content, function(sub_tab_content, key){
var fieldset = new Element('fieldset').inject(div);
new Element('legend').set('text', sub_tab_content.name.replace('_', ' ')).inject(fieldset);
var ul = new Element('ul', { class: 'button_list' }).inject(fieldset);
Object.each(sub_tab_content.buttons, function(value, key){
var li = new Element('li').inject(ul)
var a = new Element('a', { title: '$'+(value.price).formatMoney(), 'href': this.href }).set('html', value.nameShort);
if (value.price != value.price_max) value.price += '-'+value.price_max;
a.addEvent('click', this.add.bind(this, [ value.table, value.id, value.name, value.price, value.department ]));
if (value.price != value.price_max) a.addClass('tbd');
a.inject(li);
// Resize button text
this.resizeButtonText(a, li.getSize().x, 14, 0);
}, this);
}, this);
}, this);
// Add item button
this.search('book');
var a = new Element('a', { 'href': this.href });
a.addEvent('click', this.addItem.bind(this)).set('html', 'Add Item').inject($('addItem'));
$('ItemTable').addEvent('change', function() {
this.search($('ItemTable').value);
}.bind(this));
// Add custom button
var a = new Element('a', { 'href': this.href });
a.addEvent('click', this.addCustom.bind(this)).set('html', 'Add Custom Item').inject($('addCustom'));
// Add payment buttons
$('purchase_pay').empty();
this.options.payment_methods.reverse().each(function(item, index){
var li = new Element('li', { 'id': 'pay_'+item, 'href': this.href });
li.addEvent('click', this.pay.bind(this, item)).set('html', item).inject($('purchase_pay'), 'top');
}, this);
// Add modification buttons
$('buttonCancel').addEvent('click', this.clear.bind(this));
$('buttonSelectAll').addEvent('click', this.selectAll.bind(this));
$('buttonRemove').addEvent('click', this.remove.bind(this));
$('buttonDiscount').addEvent('click', this.discount.bind(this));
// Add cashier button
$('cashier').addEvent('click', this.cashier.bind(this));
// Update password
var updatePassword = function() {
$('password').load(this.webroot+'shifts/password');
// Show last updated time
var d = new Date();
var hour = d.getHours();
var minute = d.getMinutes() + '';
if (hour < 12) var a_p = 'am';
else var a_p = 'pm';
if (hour == 0) hour = 12;
else if (hour > 12) hour = hour - 12;
if (minute.length == 1) minute = '0' + minute;
$('password').setProperty('title', 'Public Terminal Password (updated '+hour+':'+minute+' '+a_p+')');
}.bind(this).periodical(60000);

// Disable form submissions
$('col_left').getElements('form').each(function(item, index){
item.addEvent('submit', function(e) { return false; })
});
$('ItemSearchForm').addEvent('submit', function(e) {
if ($('ItemId').get('value')) this.addItem();
}.bind(this));

// Process barcode scans
new ScannerKeystrokeObserver({
onRead: function(code) {
var myRequest = new Request.HTML({
url: this.webroot+'books/search',
onSuccess: function(responseTree, responseElements) {
if (result = responseElements.filter('.itemListing')[0]) {
var itemInfo = result.get('data-info').split('|');
if (itemInfo[2] != 0) used = ' (Used)';
else used = '';
$('ItemName').set('value', result.getFirst('span[class=name]').get('html')+used);
$('ItemId').set('value', itemInfo[0]);
$('ItemPrice').set('value', itemInfo[1]);
$('ItemDiscount').set('value', itemInfo[2]);
this.addItem();
}
}.bind(this)
}).post('search='+code);
}.bind(this)
});

new SimpleTabs($('tabs'), { selector: 'h1', hover: true });
},

add: function(table, id, name, price, department) {
// If there is a range of possible prices, prompt for user input
if (price.toString().indexOf("-") > 0) {
range = price.split('-');
if (range[1] != 'null') {
custom_price = prompt('Enter a price between $'+range[0]+' and $'+range[1]+'.');
if (custom_price >= range[0] && custom_price <= range[1]) price = custom_price;
else price = null;
} else {
custom_price = prompt('Enter a price greater than $'+range[0]+'.');
if (custom_price >= range[0]) price = custom_price;
else price = null;
}
}

if (price == null) alert('Please enter a valid price!');
else {
// New item - add to purchase
if (!this.purchase[id]) this.purchase[id] = Array(table, name, price, 1, department);
// Repeat item - increase existing qty
else this.purchase[id] = Array(table, name, price, (this.purchase[id][3]+1), department);

$each(this.purchase, function(item, index) {
var span = new Element('span');
span.set('html', '$'+(item[2]*item[3]).formatMoney());
if ($('purchase_summary_'+index)) {
$('purchase_summary_'+index).empty();
var a = new Element('a', { 'href': this.href }).addEvent('click', this.select.bind(this, index));
if (item[3] > 1) a.set('html', item[1]+' x'+item[3]);
else a.set('html', item[1]);
$('purchase_summary_'+index).adopt(span).adopt(a);
} else {
var li = new Element('li', { 'id': 'purchase_summary_'+index });
var a = new Element('a', { 'href': this.href }).addEvent('click', this.select.bind(this, index));
a.set('html', item[1]);
li.adopt(span).adopt(a);
$('purchase_summary_list').adopt(li);
}
}, this);

this.update();
// Remove button focus
document.activeElement.blur();
}
},

addCustom: function() {
name = $('CustomName').get('value');
id = name.replace(/[^a-zA-Z0-9]+/g,'').toLowerCase();
price = $('CustomPrice').get('value');
department = $('CustomDepartmentId').get('value');
if (department == this.options.dept_book || department == this.options.dept_merch) alert('Selling inventoried items from the "Custom Item" tool will create inventory errors. Have you tried searching for the item by title, code and keyword?');
if (name != 'Item Name' && price > 0 && department) this.add(null, id, name, price, department);
else alert('Some information is missing. Please check the custom item details.');
},

addItem: function() {
id = $('ItemId').get('value');
name = $('ItemName').get('value');
price = $('ItemPrice').get('value');
discount = $('ItemDiscount').get('value');

if (id) {
table = $('ItemId').retrieve('scope');
if (table == 'book') dept = this.options.dept_book;
else dept = this.options.dept_merch;
id += '-'+discount;
this.add(table, id, name, price, dept);
// Clear item search
$('ItemSearchForm').getElements('input[id^=Item]').each(function(item, index){
item.set('value', '');
});
} else alert('Please select an item from the inventory first!')
},

cashier: function() {
cashiers = this.options.cashiers;
cookie = Cookie.read('CakeCookie[Shift]')
if (!cookie) {
window.location = this.webroot+'sales';
throw('Session cookie missing. Page will now be reloaded.');
}
cashier_id = cookie.replace(/[{'"}]/g,'').split(',')[1].split(':')[1];
// Find the current cashier details
Array.each(cashiers, function(c, index) {
if (parseInt(c.id) == parseInt(cashier_id)) current = index;
});
// Find the next cashier
if (cashiers.length != (current+1)) current++;
else current = 0;
$('cashier').set('text', cashiers[current].name);
Cookie.write('CakeCookie[Shift]', cookie.replace(/"cashier":".+"/g, '"cashier":"'+cashiers[current].id+'"'));
},

clear: function() {
// Clear the highlight array
this.highlighted_buttons.empty();
// Empty the purchase display
$('purchase_summary_list').empty();
// Empty the purchase object
this.purchase = Object();
// Clear item search
$('ItemSearchForm').getElements('input[id^=Item]').each(function(item, index){
item.set('value', '');
});
this.update();
},

discount: function() {
var percent = parseFloat(prompt("Discount Percentage",25))/100;
if (percent && this.highlighted_buttons.length) {
// Loop through lighlighted buttons and discount them
this.highlighted_buttons.each(function(item, index){
// Give the item a unique id to avoid conflicting with other, undiscounted items
new_item = item+'-'+percent;
// Copy the old, undiscounted version
this.purchase[new_item] = Array(
this.purchase[item][0], // Table
this.purchase[item][1]+' (-'+(percent*100)+'%)', // Name
this.purchase[item][2]-(this.purchase[item][2]*percent), // Price
this.purchase[item][3], // Qty
this.purchase[item][4] // Department
);
// Build the new listing
var li = new Element('li', { 'id': 'purchase_summary_'+new_item });
var span = new Element('span');
old_cost = this.purchase[item][2] * this.purchase[item][3];
new_cost = old_cost-(old_cost*percent);
span.set('html', '$'+new_cost.formatMoney());
var a = new Element('a', { 'href': this.href }).addEvent('click', this.select.bind(this, new_item));
if (this.purchase[item][3] > 1) a.set('html', this.purchase[item][1]+' (-'+(percent*100)+'%) x'+this.purchase[item][3]);
else a.set('html', this.purchase[item][1]+' (-'+(percent*100)+'%)');
li.inject($('purchase_summary_'+item), 'after');
$('purchase_summary_'+new_item).adopt(span).adopt(a);
// Clean up
delete this.purchase[item];
$('purchase_summary_'+item).dispose();
}, this);
// Clear the highlight array
this.highlighted_buttons.empty();
} else alert('Please select an item from the order list!');

this.update();
},

pay: function(method) {
var str = String();
$each(this.purchase, function(item, index) {
// ID | Table | Name | Price | Qty | Department
str += index+'|'+item[0]+'|'+item[1]+'|'+item[2]+'|'+item[3]+'|'+item[4]+'||';
});
if (str.length) {
if (eval('this.pay'+method.capitalize()+'($('purchase_total').get('html'))')) {
$('SaleSummary').value = str;
var myRequest = new Request({
url: this.webroot+'sales/pay/'+method,
method: 'post',
onSuccess: function(response) {
this.register();
if (response.substr(-1) == "?" && confirm(response))
window.location.href = this.webroot+'sales/receipt.pdf';
else alert(response);
this.clear();
}.bind(this), onFailure: function() {
alert('Purchase failed.');
}
}).send('items='+str.replace(/&/g, '%26'));
}
} else alert('Please add an item to the order list!');
},

payCash: function(total) {
// Sale total must be positive
if (total < 0) {
alert('Insufficient sale value!');
return false;
}
var tendered = prompt("Cash Received:", total);
change = tendered-total;
if (change == 0) return true;
else if (change > 0) {
alert('Change Due: $'+change.formatMoney());
return true;
} else {
alert('Insufficient money tendered!');
return false;
}
},

payCertificate: function(total) {
var tendered = prompt("Certificate Value:", total);
remainder = tendered-total;
if (remainder == 0) return true;
else if (remainder > 0) {
alert('Remaining Balance: $'+remainder.formatMoney());
return true;
} else {
owed = 0-remainder;
var tendered2 = prompt("Additional Cash Received:", owed.formatMoney());
change = tendered2-owed;
if (change >= 0) {
if (change > .01) alert('Change Due: $'+change.formatMoney());
var mySubRequest = new Request({ url: this.webroot+'sales/pay/cash', method: 'post', onSuccess: function() {
return true;
}.bind(this), onFailure: function() {
return false;
}}).send('items=0|null|Certificate Extension|'+owed+'|1|'+this.options.dept_cert+'||');
if (mySubRequest) return true;
} else {
alert('Insufficient money tendered!');
return false;
}
}
},

payCheck: function(total) {
// Sale total must be positive
if (total < 0) {
alert('Insufficient sale value!');
return false;
}
else return true;
},

payComp: function(total) {
return true;
},

payCredit: function(total) {
// Sale total must be positive
if (total < 0) {
alert('Insufficient sale value!');
return false;
}
// Check against CC minimum
subtotal = $('purchase_total').get('text');
if (this.options.cc_minimum && subtotal < (this.options.cc_minimum - .05) && !this.purchase['credit']) {
if (confirm('This purchase is under $'+this.options.cc_minimum+', would you like to add a $'+this.options.cc_surcharge+' surcharge?'))
// Table | ID | Name | Price | Department
this.add(null, 'credit', 'Credit card fee', this.options.cc_surcharge, this.options.dept_fee);
else
// Table | ID | Name | Price | Department
this.add(null, 'credit', 'Credit card fee waived', 0, this.options.dept_fee);
return false;
} else return true;
},

register: function() {
$('shift_total').load(this.webroot+'shifts/total');
$('password').load(this.webroot+'shifts/password');
},

remove: function() {
if (this.highlighted_buttons.length) {
// Loop through lighlighted buttons and remove them from the purchase
this.highlighted_buttons.each(function(item, index){
delete this.purchase[item];
$('purchase_summary_'+item).dispose();
}, this);
// Clear the highlight array
this.highlighted_buttons.empty();
} else alert('Please select an item from the order list!');

this.update();
},

resizeButtonText: function(el, targetSize, fontSize, iteration) {
currentSize = el.getSize();
if (targetSize < currentSize.x) {
newFontSize = fontSize-1;
if (!iteration) {
var pt = el.getStyle('padding-top').toInt();
var pb = el.getStyle('padding-bottom').toInt();
el.setStyle('height', (currentSize.y-pb-pt)+'px');
el.setStyle('line-height', (currentSize.y-pb-pt)+'px');
el.setStyle('padding-top', pt+'px');
el.setStyle('padding-bottom', pb+'px');
}
el.setStyle('font-size', newFontSize+'px');
this.resizeButtonText(el, targetSize, newFontSize, iteration++);
} else el.setStyle('display', 'block');
},

search: function(scope) {
if (this.searcher) {
this.searcher.destroy();
delete(this.searcher);
$('ItemSearch').removeEvents();
}
$('ItemId').store('scope', scope);
if (scope == 'book') $('ItemSearch').setProperty('placeholder', 'Search by title, author or ISBN fragment');
else $('ItemSearch').setProperty('placeholder', 'Search by name, custom variable or code fragment');
this.searcher = new Autocompleter.Request.HTML('ItemSearch', this.webroot+scope+'s/search', {
postVar: 'search',
injectChoice: function(choice) {
choice.inputValue = choice.getFirst('span[class=name]').get('html');
this.addChoiceEvents(choice.set('html', this.markQueryValue(choice.innerHTML)));
},
onSelection: function(el, choice, selection) {
// Item ID | Item Price | Item Discount
var itemInfo = choice.get('data-info').split('|');
if (itemInfo[2] != 0) used = ' (Used)';
else used = '';
this.addChoiceEvents($('ItemName').set('value', choice.getFirst('span[class=name]').get('html')+used));
this.addChoiceEvents($('ItemId').set('value', itemInfo[0]));
this.addChoiceEvents($('ItemPrice').set('value', itemInfo[1]));
this.addChoiceEvents($('ItemDiscount').set('value', itemInfo[2]));
}
});
},

select: function(button) {
if (this.highlighted_buttons.contains(button)) {
this.highlighted_buttons.erase(button);
$('purchase_summary_'+button).erase('class');
} else {
this.highlighted_buttons.include(button);
$('purchase_summary_'+button).set('class', 'active');
}
},

selectAll: function() {
$each(this.purchase, function(item, index) {
if (!this.highlighted_buttons.contains(index)) {
this.highlighted_buttons.include(index);
$('purchase_summary_'+index).set('class', 'active');
}
}, this);
},

tax: function(amount, summed) {
if (summed) return Math.ceil(amount * (1 + this.options.tax_rate) * 100)/100;
else return Math.ceil(amount * this.options.tax_rate * 100)/100;
},

update: function() {
subtotal = { taxed: 0, untaxed: 0 };
$each(this.purchase, function(item, index) {
if (this.options.no_tax.contains(item[4].toInt())) subtotal.untaxed += item[2] * item[3];
else subtotal.taxed += item[2] * item[3];
}, this);
// Update Purchase Cost display
$('purchase_subtotal').set('text', (subtotal.taxed + subtotal.untaxed).formatMoney());
$('purchase_tax').set('text', (this.tax(subtotal.taxed, false)).formatMoney());
$('purchase_total').set('text', (this.tax(subtotal.taxed, true) + subtotal.untaxed).formatMoney());
}
});