using Microsoft.AspNetCore.Html;
using System.Text;

namespace YLErp.Web
{
    public class MenuRender : BasicViewModel
    {
        public MenuRender(UserInfo userInfo) : base(userInfo)
        {
        }

        public IHtmlContent ShowMenu(IHtmlHelper helper, List<MenuItem> menus)
        {
            var currentMenu = Array.Empty<string>();

            if (helper.ViewBag.Menu != null)
            {
                currentMenu = helper.ViewBag.Menu.ToString().Split('-');
            }

            var sb = new StringBuilder();

            foreach (var item in menus)
            {
                RentItemV2(sb, item, currentMenu);
            }
            
            return new HtmlString(sb.ToString());
        }

        private void RentItemV2(StringBuilder sb, MenuItem item, string[] currentMenu)
        {
            if (!string.IsNullOrEmpty(item.Rights[0]) && !CurUser.HasRight(item.Rights[0]))
            {
                return;
            }

            var css = string.Empty;
            if (currentMenu.Length > item.Level)
            {
                if (currentMenu[item.Level] == item.Name)
                {
                    css = item.SubItems != null ? "active-page open" : "active";
                }
            }

            sb.Append("<li class='").Append(css).Append("'>");
            if (item.SubItems != null)
            {
                sb.AppendFormat(@"
<a href=""javascript:void(0);"">
	<i class=""menu-icon {0}""></i><span class='menu-text'>{1}</span><i class=""accordion-icon fa fa-angle-left""></i>
</a>
<ul class='sub-menu'>", item.Icon, item.Name).AppendLine();
                foreach (var subitem in item.SubItems)
                {
                    RentItemV2(sb, subitem, currentMenu);
                }
                sb.AppendLine("</ul>");
            }
            else
            {
                var target = item.Target.TrimToNull();
                if (target == null && (item.Url.StartsWith("http:") || item.Url.StartsWith("/RiskHedging/Index2", StringComparison.OrdinalIgnoreCase)))
                {
                    target = " target='_blank' ";
                }
                sb.AppendFormat(@"<a href='{0}' {1}>{2}</a>", item.Url, target, item.Name).AppendLine();
            }
            sb.AppendLine("</li>");
        }
    }
}