https://shop.nait.ca/eSolution/js/basket/basketitem.js?v=4.3.409.56

1var BasketItem = function(item_object) {
2	this.image 	= item_object.image;
3	this.order 	= item_object.order;
4	this.courses 	= item_object.courses;
5	this.regularPrice 	= parseFloat(item_object.regularPrice);
6	this.discountedPrice 	= parseFloat(item_object.discountedPrice);
7	this.color 	= item_object.color;
8	this.size 	= item_object.size;
9	this.item 	= item_object.item;
10	this.desc 	= item_object.desc;
11	this.isFinaleSale 	= item_object.isFinaleSale;
12	this.variant_3 	= item_object.variant_3;
13	this.customizations 	= item_object.customizations;
14	this.price	= parseFloat(item_object.price);
15	this.used	= item_object.used;
16	this.qty	= parseFloat(item_object.qty);
17	this.text	= item_object.text;
18	// define constant offset ints
19	this.offset_int = '77';
20};
21
22BasketItem.prototype.getDetails 		 = function()
23{
24	return {
25		item: this.item,
26		desc: this.desc,
27		price: this.price,
28		used: this.used,
29		qty: this.qty,
30		text: this.text
31	};
32};
33
34BasketItem.prototype.generateSignature = function()
35{
36	var string_builder_hash 	= [this.item, this.desc, this.qty].join(this.offset_int);
37	var hash = 0, i, chr;
38	for(i = 0; i < string_builder_hash.length; i++) {
39		chr		= string_builder_hash.charCodeAt(i);
40		hash 	= ( ( hash << 5 ) - hash) + chr;
41		hash 	|= 0;
42	}
43	return hash;
44};
45
46BasketItem.prototype.generateSubSignature = function(details)
47{
48	var string_builder_hash 	= details.join(this.offset_int);
49	var hash = 0, i, chr;
50	for(i = 0; i < string_builder_hash.length; i++) {
51		chr		= string_builder_hash.charCodeAt(i);
52		hash 	= ( ( hash << 5 ) - hash) + chr;
53		hash 	|= 0;
54	}
55	return hash;
56};
57
58// This is mainly used in testing to ensure the signature calculation is firing and working properly
59BasketItem.prototype.compare = function (origin) {
60	var origin_info = origin.getDetails();
61	var self		= this.getDetails();
62	if( origin.generateSubSignature([ origin_info.item, origin_info.desc ]) == this.generateSubSignature([ this.item, this.desc ]) )
63	{
64		return {
65			state: 'UPDATE',
66			increment: true
67		};
68	}
69	else
70	{
71		return {
72			state: 'DIFFERENT',
73			increment: false
74		};
75	}
76};
77
78BasketItem.test = function() {
79	// We test ourselves
80	var i1 = new BasketItem({
81		item: 1234,
82		desc: "First Item",
83		price: 4.13,
84		used: "",
85		qty: 1,
86		text: null
87	});
88
89	var i2 = new BasketItem({
90		item: 1234,
91		desc: "First Item",
92		price: 4.13,
93		used: "",
94		qty: 1,
95		text: null
96	});
97
98	/**
99	 * Our first test, we expect the items to be identical
100	 */
101	if(i1.generateSignature() === i2.generateSignature())
102	{
103		console.log('[Test] i1 === i2: Passed');
104	}
105
106	/**
107	 * Our next test, we'll operate on i2, change the QTY field, and expect a state of update
108	 */
109	 i2.qty = 4;
110	 if(i1.generateSignature() !== i2.generateSignature())
111	 {
112	 	var comparison = i1.compare(i2);
113	 	if(comparison.state === 'UPDATE' && comparison.increment)
114	 	{
115	 		console.log('[Test] i1 !== i2 by qty: Passed');
116	 	}
117	 	else
118	 	{
119	 		throw new TypeError('Failed to run test two; the state was ' + comparison.state + ', however we expected UPDATE.');
120	 	}
121	 }
122	 else
123	 {
124	 	throw new TypeError('Failed to run test two; both signatures match.');
125	 }
126
127	 /**
128	  * Our final test, we'll change i1 entirely, and compare them two, we expect a DIFFERENT state with INCREMENT as false
129	  */
130	 i1.item = Math.floor(Math.random() * 32) + 1;
131	 i1.desc = "New Item Is Here";
132	 i1.price = 4.63;
133	 i1.used = "";
134	 i1.qty = 46;
135	 i1.text = null;
136
137	 if(i1.generateSignature() !== i2.generateSignature())
138	 {
139	 	var comparison = i1.compare(i2);
140	 	if(comparison.state === 'DIFFERENT' && !comparison.increment)
141	 	{
142	 		console.log('[Test] i1 !== i2 due to different objects: Passed');
143	 	}
144	 	else
145	 	{
146	 		throw new TypeError('Failed to run test two; the state was ' + comparison.state + ', however we expected DIFFERENT.');
147	 	}
148	 }
149	 else
150	 {
151	 	throw new TypeError('Failed to run test three; both signatures match.');
152	 }
153};
154
155if(typeof module !== 'undefined') {
156    module.exports = BasketItem;
157}