using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace Chenmo.Soft.WebUI.Framework
{
    public static class UrlHelperExtensions
    {
        /// 
CSS cdn
        /// 
        /// 
        /// 
        /// 
        /// 
        public static string CdnCssContent(this UrlHelper helper, string contentPath)
        {
            return GetContent(helper, contentPath, "CSS");
        }

        /// 
JS cdn
        /// 
        /// 
        /// 
        /// 
        /// 
        public static string CdnJsContent(this UrlHelper helper, string contentPath)
        {
            return GetContent(helper, contentPath, "JS");
        }

        /// 
img cdn
        /// 
        /// 
        /// 
        /// 
        /// 
        public static string CdnImgContent(this UrlHelper helper, string contentPath)
        {
            return GetContent(helper, contentPath, "IMG");
        }

        private static string GetContent(this UrlHelper helper, string contentPath, string type)
        {
            var result = helper.Content(contentPath);
            if (ConfigurationManager.AppSettings[$"CDN_{type}_Enable"].ToUpper() == "TRUE")
            {
                result = ConfigurationManager.AppSettings[$"CDN_{type}_URL"]
                         + contentPath.TrimStart(''~'');
            }
            return result;
        }
    }
}