using Newtonsoft.Json;

namespace YLErp.Web
{
    public static class MenuHelper
    {
        public static List<MenuItem> GetMenus(string fileName)
        {
            try
            {
                var realFilePath = Server.MapPath("/App_Data/" + fileName);
                var menuStr = "";
                if (File.Exists(realFilePath))
                {
                    menuStr = File.ReadAllText(realFilePath);
                }
                else
                {
                    menuStr = File.ReadAllText(Server.MapPath("~/App_Data/" + fileName));
                }
                var menus = JsonConvert.DeserializeObject<List<MenuItem>>(menuStr);
                var seq = 0;
                PreProcessMenus(menus, 0, ref seq);
                return menus;
            }
            catch (Exception exp)
            {
                LogFactory.GetLogger<MenuItem>().Error(exp);
                return new List<MenuItem>();
            }
        }

        private static void PreProcessMenus(List<MenuItem> items, int level, ref int seq)
        {
            if (items == null)
            {
                return;
            }

            foreach (var item in items)
            {
                seq++;
                item.Level = level;
                if (string.IsNullOrEmpty(item.Icon))
                {
                    item.Icon = "fa fa-caret-right";
                }
                var url = item.Url;
                if (string.IsNullOrWhiteSpace(url) || url.StartsWith("#"))
                {
                    url = string.Empty;
                }
                else if (url.StartsWith("http:"))
                {

                }
                else if (!url.StartsWith("/"))
                {
                    url = "/" + item.Url;
                }
                item.Url = url;
                item.Id = seq.ToString();
                PreProcessMenus(item.SubItems, level + 1, ref seq);
            }
        }
    }
}