function ranking_customer(widget) {
    "use strict";

    var model = openerp;
    var Qweb = openerp.web.qweb;

    widget.RankingCustomer = widget.Base.extend({
        template: 'RankingCustomer',
        init: function (parent) {
            this._super(parent, {
                width: 6,
                height: 4
            });
        },
        start: function () {
            var self = this;
            self.fetchInitial();
        },
        fetchInitial: function(){
            var self = this;
            self.fetchDataSQL().then(function (DataSQL) {
                return DataSQL;
            }).then(function(DataSQL) {
                self.ResCompany = DataSQL.company;
                self.AccountInvoice = DataSQL.invoices;
                self.PosOrder = DataSQL.orders;
                self.ResPartner = DataSQL.partners;
                return self.CustomerRanking();
            });
        },
        fetchDataSQL: function() {
            var data = $.get('/dashboard-RankingCustomer');
            return data;
        },
        getPosOrder:function(id) {
            var self = this;
            return _.flatten(_.filter(self.PosOrder,function (inv) {
                return inv.customer_id === id;
            }));
        },
        getAccountInvoice:function(id, type) {
            var self = this;
            return _.flatten(_.filter(self.AccountInvoice,function (inv) {
                return inv.customer_id === id && inv.type == type;
            }));
        },

        CustomerRanking: function() {
            var self = this;
            var ranking = [];
            var ResPartner = self.ResPartner;
            _.each(ResPartner, function (item) {
                var PosOrder = self.getPosOrder(item.id);
                var AccountInvoice = self.getAccountInvoice(item.id,'out_invoice');
                var AccountInvoiceRefund = self.getAccountInvoice(item.id,'out_refund');
                var pos_order_amount = _.reduce(_.map(PosOrder,function(item) {
                    return item.amount;
                }),function(memo, num) {
                    return memo + num;
                },0);
                var account_invoice_amount = _.reduce(_.map(AccountInvoice,function(item) {
                    return item.amount;
                }),function(memo, num) {
                    return memo + num;
                },0);
                var account_invoice_refund_amount = _.reduce(_.map(AccountInvoiceRefund,function(item) {
                    return item.amount;
                }),function(memo, num) {
                    return memo + num;
                },0);
                var amount = (pos_order_amount + account_invoice_amount) - account_invoice_refund_amount;
                if(amount > 0 ){
                   ranking.push({
                       name: item.name,
                       amount: amount,
                   });
                }
            });
            ranking.sort(function(a, b) {
                return b.amount - a.amount
            });
            self.BuildChart(ranking);
        },
        BuildChart: function (ranking){
            var self = this;
            var label = [];
            var body = [];
            var rank = 10;
            var item;
            var CurrencyBase = self.ResCompany[0].currency_id;
            for (var i = 0; i < rank; i++) {
                if (ranking[i]){
                    item = ranking[i];
                }else{
                    item = {};
                    item.name = "N/A";
                    item.amount = 0;
                }
                label.push(item.name)
                body.push(item.amount);
            }
            var name = '.ranking-horizontalBar-chart';
            var chart = new widget.DashboardChartWidget(self);
            chart.BuildHorizontalBarChart(name,CurrencyBase,label,body);
        }
    });
}