openerp.eiru_payment_term_generator = function (instance, local) {
    local.widgetInstance = null;
    local.parentInstance = null;

    local.AccountPaymentTermWidget = instance.Widget.extend({
        template : "eiru_payment_term_generator.AccountPaymentTerm",
        init:function(parent){
            this._super(parent);
            this.buttons = parent.$buttons;
        },

        updateId : function(id){
            var self = this;
            self.id=id;
        },

        reloadLine: function() {
            local.parentInstance.reload();
        },

        start: function () {
            var self = this;
            this.$el.click(function () {
                self.fecthInitial();
            });
        },

        fecthInitial: function(){
            var id= openerp.webclient._current_state.id;
            var self = this;
            self.fecthAccountPaymentTerm(id).then(function(PaymentTerm){
                return PaymentTerm;
            }).then(function(PaymentTerm){
                self.PaymentTerm = PaymentTerm;
                return self.fetchAccountPaymentTermLine();
            }).then(function(PaymentTermLine){
                self.PaymentTermLine = PaymentTermLine;
                self.fectchCalculatePaymentTerm();
            });
            return false;
        },

        fecthAccountPaymentTerm: function(id){
            var self = this;
            var defer = $.Deferred();
            var domain=[['id','=', id]];
            var fields=['id','name','invoice_amount','amount','frequency','active'];
            var PaymentTerm = new instance.web.Model('account.payment.term');
            PaymentTerm.query(fields).filter(domain).order_by('id').all().then(function(results){
                defer.resolve(results);
            });
            return defer;
        },
        
        fetchAccountPaymentTermLine: function () {
            var self = this;
            var defer = $.Deferred();
            var id = _.flatten(_.map(self.PaymentTerm,function(map){
                return map.id;
            }));
            var fields=['id','payment_id','value','days','days2','weeks','months','value_amount','amount_round'];
            var domain=[['payment_id','in', id]];
            var PaymentTermLine = new instance.web.Model('account.payment.term.line');
            PaymentTermLine.query(fields).filter(domain).order_by('id').all().then(function(results){
                defer.resolve(results);
            });
            return defer;
        },

        fectchCalculatePaymentTerm: function () {
            var self = this;
            var defer = $.Deferred();
            var data = [];
            var type = 'fixed';
            var PaymentTerm = self.PaymentTerm;
            var months_count = 0;
            var weeks_count = 0;
            var days_count = 0;
            var paid = 0;
            var value_amount = 0;
            var qty = PaymentTerm[0].invoice_amount / PaymentTerm[0].amount;
            if (qty % 1 == 0) {
                qty-=1
            }else{
                qty = Math.trunc(qty)
            }
            for (var i = 0; i <= qty; i++) {
                value_amount = PaymentTerm[0].amount;
                if(i == qty){
                    type = 'balance';
                    value_amount = PaymentTerm[0].invoice_amount - paid;
                } 
                paid += PaymentTerm[0].amount;
                data.push({
                    payment_id : PaymentTerm[0].id,
                    value : type,
                    value_amount : value_amount,
                    days : days_count,
                    days2 : 0,
                    weeks : weeks_count,
                    months : months_count
                });

                if(PaymentTerm[0].frequency == 'week'){
                    weeks_count += 1;       
                }else{
                    if(PaymentTerm[0].frequency == 'month'){
                        months_count += 1;    
                    }else{
                        days_count += 15;
                    }
                    
                }
            }
            self.joinPaymentTermLine(data).then(function(results) {
                return results;
            }).then(function(){
                self.reloadLine();
            });
        },

        joinPaymentTermLine: function(data) {
            var self = this;
            var defer = $.Deferred();
            var AccountPaymentTerm = new openerp.web.Model('account.payment.term');
            AccountPaymentTerm.call('join_payment_term_lines',[data], {
                    context: new openerp.web.CompoundContext()
            }).then(function(results) {
                defer.resolve(results);
            });
            return defer;
        },
    });

    if (instance.web && instance.web.FormView) {
        instance.web.FormView.include({
            load_form: function (record) {
                this._super.apply(this, arguments);
                if (this.model !== 'account.payment.term') return;
                local.parentInstance = this;
                if (local.widgetInstance) {
                    local.widgetInstance.updateId(record.id);
                }
                local.widgetInstance = new local.AccountPaymentTermWidget(this);
                var elemento = this.$el.find('.oe_form_nosheet');
                elemento =  elemento.find('.calculate_term_box');              
                local.widgetInstance.appendTo(elemento);
                local.widgetInstance.updateId(record.id);
            }
        });
    }
}