function ranking_sales_product (widget) {
    "use strict";

    var model= openerp;
    widget.RankingSalesProductWidget = widget.Base.extend({
        template: 'RankingSalesProductTmpl',
        data : [],
        accountInvoice : [],
        invoiceLine : [],
        productProdcut : [],

        init: function (parent) {
            this._super(parent, {
                width : 6,
                height: 4
            });
        },
        start: function () {
            var self = this;
            self.fecthInitial();
        },
        fecthInitial:function(){
            var self = this;
            self.$el.block({ message: null, overlayCSS: { backgroundColor: '#FAFAFA' }});
            self.$el.find('.widget-content.widget-loading').css('display','flex');
            self.fecthInvoice().then(function(accountInvoice){
                return accountInvoice;
            }).then(function(accountInvoice){
                self.accountInvoice = accountInvoice;
                return self.fecthInvoiceLine(accountInvoice);
            }).then(function(invoiceLine){
                self.invoiceLine = invoiceLine;
                return self.fecthProductProduct(invoiceLine);
            }).then(function(productProdcut){
                self.productProdcut = productProdcut;
                return self.fecthRankingProdcuto();
            });
            return false;
        },
        // Obtener factura
        fecthInvoice :function(){
            var self = this;
            var fecha = new Date
            var desde =fecha.getFullYear()+"-"+(fecha.getMonth()+1)+"-01";
            var hasta =fecha.getFullYear()+"-"+(fecha.getMonth()+2)+"-01";
            var defer =$.Deferred();
            var fields =['id','invoice_line', 'date_invoice'];
            var domain =[['type', '=', 'out_invoice'],['date_invoice', '>=', desde],['date_invoice', '<', hasta],['state', '=',['open','paid']]];
            // date_invoice
            var invoice = new model.web.Model('account.invoice');
            invoice.query(fields).filter(domain).all().then(function(results){
                defer.resolve(results);
            });
            return defer;
        },
        // Obtener linea de la factura
        fecthInvoiceLine : function(accountInvoice){
            var self = this;
            var defer =$.Deferred();
            var invoice_line =_.flatten(_.map(accountInvoice, function(item){return item.invoice_line}));
            var fields =['id', 'product_id','quantity'];
            var domain = [['id','=', invoice_line]];
            var invoiceLine = new model.web.Model('account.invoice.line');
            invoiceLine.query(fields).filter(domain).all().then(function(results){
                defer.resolve(results);
            });
            return defer;
        },
        // Obtener Prodcutos
        fecthProductProduct : function(invoiceLine){
            var self = this;
            var defer =$.Deferred();
            var prodcut_id = _.flatten(_.map(invoiceLine,function(item){return item.product_id[0]}));
            var fields = ['id', 'name_template', 'type'];
            var domain =[['id', '=', prodcut_id]];
            var prodcut= new model.web.Model('product.product');
            prodcut.query(fields).filter(domain).all().then(function(results){
                defer.resolve(results);
            });
            return defer;
        },

        fecthRankingProdcuto : function(){
            var self = this;
            var itemProduct;
            var itemLine;
            var ranking=[];
            var cat=0;
            var lineUnik;
            for (var i = 0; i < self.productProdcut.length; i++) {
                itemProduct = self.productProdcut[i];
                itemLine= self.getInvoiceLine(itemProduct.id);
                if (itemProduct.type == 'product'){
                    if (itemLine.length > 0){
                        cat = _.reduce(_.map(itemLine,function(map){return map.quantity}),function(meno,num){return meno + num},0);
                        lineUnik=itemLine.shift();
                        ranking.push({  product :lineUnik.product_id[1],qty:cat });
                    }
                }
            }
            ranking.sort(function(a,b){return b.qty - a.qty});
            self.$el.unblock()
            self.$el.find('.widget-content.widget-loading').css('display','none');
            var fecha = new Date();
            var meses = new Array ("Enero","Febrero","Marzo","Abril","Mayo","Junio","Julio","Agosto","Septiembre","Octubre","Noviembre","Diciembre");
            self.$el.find('.widget-title').find('span').text("Ranking de Producto mas Vendido Mes de "+meses[fecha.getMonth()]);

            self.fecthChart(ranking);
        },
        // get line
        getInvoiceLine(product_id){
            var self = this;
            return _.flatten(_.filter(self.invoiceLine,function(line){return  line.product_id[0] === product_id}));
        },
        // Generar Grafico
        fecthChart: function(ranking){
            var self = this;
            var label=[];
            var body=[];
            var item;
            var rank=10;

            for (var i = 0; i < rank; i++) {
                if (ranking[i]){
                    item = ranking[i];
                }else{
                    item={};
                    item.product="N/A";
                    item.qty=0;
                }
                label.push(item.product);
                body.push(item.qty);
            }
            var chart = new Chart(this.$el.find(".widget-content").find('canvas'), {
                // type: 'doughnut',
                type: 'horizontalBar',
                // type: '',
                data: {
                    labels: label,
                    datasets: [
                        {
                            backgroundColor: ['#7c7bad', '#7c7bad', '#7c7bad', '#7c7bad', '#7c7bad', '#7c7bad', '#7c7bad', '#7c7bad', '#7c7bad', '#7c7bad'],
                            data: body,
                        }
                    ]
                },
                options: {
                    maintainAspectRatio: false,
                    layout: {
                        padding: 20
                    },
                    scales: {
                        xAxes: [{ stacked: true }],
                        yAxes: [{ stacked: true }],
                    },
                    legend: {
                        display: false,
                    },
                }

            });
        }
    });
}