odoo.define('kpi_dashboard.NumberWidget', function (require) {
    "use strict";

    var AbstractWidget = require('kpi_dashboard.AbstractWidget');
    var registry = require('kpi_dashboard.widget_registry');
    var field_utils = require('web.field_utils');


    var NumberWidget = AbstractWidget.extend({
        template: 'kpi_dashboard.number',
        shortNumber: function (num) {
            if (Math.abs(num) >= 1000000000000) {
                return field_utils.format.integer(num / 1000000000000, false, {
                    digits: [3, 1]}) + 'T';
            }
            if (Math.abs(num) >= 1000000000) {
                return field_utils.format.integer(num / 1000000000, false, {
                    digits: [3,1]}) + 'G';
            }
            if (Math.abs(num) >= 1000000) {
                return field_utils.format.integer(num / 1000000, false, {
                    digits: [3, 1]}) + 'M';
            }
            if (Math.abs(num) >= 1000) {
                return field_utils.format.float(num / 1000, false, {
                    digits: [3, 1]}) + 'K';
            }
            if (Math.abs(num) >= 10) {
                return field_utils.format.float(num, false, {
                    digits: [3, 1]});
            }
            return field_utils.format.float(num, false, {
                digits: [3, 2]});
        },
        fillWidget: function (values) {
            var widget = this.$el;
            var value = values.value.value;
            if (value === undefined) {
                value = 0;
            }
            var item = widget.find('[data-bind="value"]');
            if (item) {
                item.text(this.shortNumber(value));
            }
            var previous = values.value.previous;

            var $change_rate = widget.find('.change-rate');
            if (previous === undefined) {
                $change_rate.toggleClass('active', false);
            } else {
                var difference = 0;
                if (previous !== 0) {
                    difference = field_utils.format.integer(
                        (100 * value / previous) - 100) + '%';
                }
                $change_rate.toggleClass('active', true);
                var $difference = widget.find('[data-bind="difference"]');
                $difference.text(difference);
                var $arrow = widget.find('[data-bind="arrow"]');
                if (value < previous) {
                    $arrow.toggleClass('fa-arrow-up', false);
                    $arrow.toggleClass('fa-arrow-down', true);
                } else {
                    $arrow.toggleClass('fa-arrow-up', true);
                    $arrow.toggleClass('fa-arrow-down', false);
                }
            }
        },
    });
    registry.add('number', NumberWidget);
    return NumberWidget;
});