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Model.js
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Model.js
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var Model = function(config){
var Model = function(){};
Model.prototype = {
model : {},
//---------------------------------------------------------
/*
* @function addShipment
* @memberOf Model
* @desc Adds a new shipment to the model.
* @param {string} ship_name
*/
addShipment: function(ship_name){
var new_ship = self.newShipment(ship_name);
self.model[new_ship.ship_id] = new_ship;
return new_ship;
},
//---------------------------------------------------------
/*
* @function newShipment
* @memberOf Model
* @desc create a new shipment object.
* @param {string} name
* @returns {object} shipment
*/
newShipment: function(name){
return {
ship_id : self.newGuid(),
name : name || "",
total_weight : 0,
unit : "lbs",
items : {}
};
},
//---------------------------------------------------------
/*
* @function removeShipment
* @memberOf Model
* @desc Removes a shipemnt from the model.
* @param {string} ship_id
*/
removeShipment: function(ship_id){
delete self.model[ship_id];
},
//---------------------------------------------------------
/*
* @function setShipmentName
* @memberOf Model
* @desc Sets the name of a shipment in the model.
* @param {string} ship_id, {string} name
*/
setShipmentName: function(ship_id,name){
self.model[ship_id].name = name;
},
//---------------------------------------------------------
/*
* @function getShipmentName
* @memberOf Model
* @desc Gets the name of a shipment in the model.
* @param {string} ship_id
* @returns {string} name
*/
getShipmentName: function(ship_id){
return self.model[ship_id].name;
},
//---------------------------------------------------------
/*
* @function getShipmentTotalWeight
* @memberOf Model
* @desc Gets the total weight of a shipment in the model.
* @param {string} ship_id
* @returns {float} total_weight
*/
getShipmentTotalWeight: function(ship_id){
return self.model[ship_id].total_weight;
},
//---------------------------------------------------------
/*
* @function getShipmentTotalWeight
* @memberOf Model
* @desc Updates the total shipment weight by calculating weight of each item in the shipment.
* @param {string} ship_id
* @returns {float} total_weight
*/
updateShipmentWeight: function(ship_id){
var total_weight = 0;
var items = self.model[ship_id].items;
for (var key in items) {
total_weight += parseFloat(items[key].weight)||0;
}
self.model[ship_id].total_weight = total_weight;
return total_weight;
},
//---------------------------------------------------------
/*
* @function addItem
* @memberOf Model
* @desc Adds a new item to a shipment in the model.
* @param {string} ship_id
* @returns {object} item
*/
addItem: function(ship_id){
var new_item = self.newItem();
new_item.ship_id = ship_id;
self.model[ship_id].items[new_item.item_id] = new_item;
return new_item;
},
//---------------------------------------------------------
/*
* @function newItem
* @memberOf Model
* @desc Creates a new item object.
* @returns {object} item
*/
newItem: function(){
return {
item_id : self.newGuid(),
name : "",
weight : 0,
unit : "lbs"
};
},
//---------------------------------------------------------
/*
* @function setItemWeight
* @memberOf Model
* @desc Sets the weight of an item in a shipment in the model. Updates the total shipping weight.
* @param {string} ship_id, {string} item_id, {string} weight
*/
setItemWeight: function(ship_id,item_id,weight){
self.model[ship_id].items[item_id].weight = weight;
self.updateShipmentWeight(ship_id);
},
//---------------------------------------------------------
/*
* @function removeItem
* @memberOf Model
* @desc Removes an item from a shipment in the model. Updates the total shipping weight.
* @param {string} ship_id, {string} item_id
*/
removeItem: function(ship_id,item_id){
delete self.model[ship_id].items[item_id];
self.updateShipmentWeight(ship_id);
},
//---------------------------------------------------------
/*
* @function setItemName
* @memberOf Model
* @desc Sets an item name in a shipment in the model.
* @param {string} ship_id, {string} item_id
*/
setItemName: function(ship_id,item_id,name){
self.model[ship_id].items[item_id].name = name;
},
//---------------------------------------------------------
/*
* @function getItemName
* @memberOf Model
* @desc Gets an item name in a shipment in the model.
* @param {string} ship_id, {string} item_id
* @return {string} name
*/
getItemName: function(ship_id,item_id){
return self.model[ship_id].items[item_id].name;
},
//---------------------------------------------------------
/*
* @function getItemWeight
* @memberOf Model
* @desc Gets an item name in a shipment in the model.
* @param {string} ship_id, {string} item_id
* @return {float} weight
*/
getItemWeight: function(ship_id,item_id){
return self.model[ship_id].items[item_id].weight;
},
//---------------------------------------------------------
/*
* @function newGuid
* @memberOf Model
* @desc Gets a new guid unique id (from random numbers).
* @return {string} guid
*/
newGuid: function(){
function s4() {
return Math.floor((Math.random()+1) * 65536).toString(16).substring(1);
};
return s4()+s4()+'-'+s4()+'-'+s4()+'-'+s4()+'-'+s4()+s4()+s4();
},
//---------------------------------------------------------
/*
* @function exportModel
* @memberOf Model
* @desc Gets a new guid unique id (from random numbers).
* @returns {string} JSON data from model
*/
exportModel: function(){
var shipments = [];
for (var ship_id in self.model) {
var shipment = {
name : self.model[ship_id].name,
total_weight : self.model[ship_id].total_weight,
items : []
};
for (var item_id in self.model[ship_id].items) {
var this_item = self.model[ship_id].items[item_id];
var item = {
name : this_item.name,
weight : this_item.weight
};
shipment.items.push(item);
};
shipments.push(shipment);
};
var export_json = JSON.stringify(shipments,null,"\t").replace(/\n/g,"<br>").replace(/\t/g," ");
return export_json;
}
};
Model.prototype.config = config || {};
var self = new Model();
return self;
}