'use strict';
define(
    [
        'handlebars',
        'moment',
        'Shared/FormatHelpers',
        'Shared/UiSettingsModel'
    ], function (Handlebars, moment, FormatHelpers, UiSettings) {
        Handlebars.registerHelper('ShortDate', function (input) {
            if (!input) {
                return '';
            }

            var date = moment(input);
            var result = '<span title="' + date.format(UiSettings.longDateTime()) + '">' + date.format(UiSettings.get('shortDateFormat')) + '</span>';

            return new Handlebars.SafeString(result);
        });

        Handlebars.registerHelper('RelativeDate', function (input) {
            if (!input) {
                return '';
            }

            var date = moment(input);
            var result = '<span title="{0}">{1}</span>';
            var tooltip = date.format(UiSettings.longDateTime());
            var text;

            if (UiSettings.get('showRelativeDates')) {
                text = FormatHelpers.relativeDate(input);
            }

            else {
                text = date.format(UiSettings.get('shortDateFormat'));
            }

            result = result.format(tooltip, text);

            return new Handlebars.SafeString(result);
        });

        Handlebars.registerHelper('Day', function (input) {
            if (!input) {
                return '';
            }

            return moment(input).format('DD');
        });

        Handlebars.registerHelper('Month', function (input) {
            if (!input) {
                return '';
            }

            return moment(input).format('MMM');
        });

        Handlebars.registerHelper('StartTime', function (input) {
            if (!input) {
                return '';
            }

            var date = moment(input);
            if (date.format('mm') === '00') {
                return date.format('ha');
            }

            return date.format('h:mma');
        });
    });