/**
 * guang
 * @author: lcy<chuanyang.liu@yoho.cn>
 * @date: 2016/09/01
 */

'use strict';

let exphbs = require('express-handlebars').create();
let Handlebars = exphbs.handlebars;
let fs = require('fs');

Handlebars.registerHelper('tpl', function(id, file, options) {

    let tpl = '';
    if (options.fn) {
        tpl = options.fn(this);
    } else {
        let source = Handlebars.partials[file];
        if (source === null) {
            source = fs.readFileSync('views/' + file + '.html', 'utf8');
            if (!source) {
                new Error('file is not found : ' + file);
            }
        }

        tpl += '<script id="' + id + '" type="text/x-handlebars" data-file="' + file + '">';
        tpl += source;
        tpl += '</script>';
    }

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

module.exports = Handlebars;