var Backbone = require('backbone'),
    Item = require('./item'),
    Globals = require('../globals');

var ItemCollection = Backbone.Collection.extend({

	setLimit: function(limit) {
        this.queryLimit = limit;        
    },

    setOffset: function(offset) {
    	this.offset = offset;
    },

    classificationTypeUrlParts: ['','section','category','sub_category'],

    setClassificationType: function(type) {
    	this.classificationType = type;
    } , 

    setClassificatonId: function(id) {
    	this.classificationId = id;
    }, 

    model: Item,
    url: function() {  
        var path = '/item'
        if(this.classificationType > 0) {
            // eg. http://localhost:4567/item/section/1/offset/0/limit/10
            var urlPart = this.classificationTypeUrlParts[this.classificationType];
            path += "/" + urlPart + "/" + this.classificationId  
        } // else eg. http://localhost:4567/item/offset/0/limit/10
        path += "/offset/" + this.offset + "/limit/" + this.queryLimit;
        return Globals.ApiUrl + path;
    }
});

module.exports = ItemCollection;