using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Autofac;
using EMISOnline.Entities;
using EMISOnline.Utility;
using EMISOnline.CommonLogic.SystemServices;
using Bowin.Common;
using Bowin.Web.Controls.Mvc;
using EMISOnline.CommonLogic.SystemServices;

namespace EMISOnline.Web.Controls
{
    public static class MenuExtensions
    {
        public static MvcHtmlString MenuTree(this HtmlHelper htmlHelper,
            AccordionTreeOptions accordiontreeOptions = null,
            System.Collections.Generic.IDictionary<string, string> htmlAttributes = null)
        {
            List<AccordionTreeDataItem> dataItemList = new List<AccordionTreeDataItem>();
            BaseExtensions.GetContextUser();
            var menuList = GetMenuList(htmlHelper);

            /*
            foreach (var menu in menuList.Where(x => x.IsVisible == true))
            {
                if (!dataItemList.Exists(x => x.MnuId == menu.MenuNo))
                {
                    dataItemList.Add(new AccordionTreeDataItem
                    {
                        MnuId = menu.MenuNo,
                        MnuName = menu.MenuName,
                        MnuOrder = menu.OrderNo,
                        MnuPic = menu.Icon,
                        MnuProgram = ((menu.Url ?? "") != "") ?
                            ("/" + menu.Url + (menu.Url.Contains("?") ? "&" : "?") + "MNU=" + menu.MenuNo)
                            : null,
                        ParentMnuId = menu.ParentMenuNo,
                        state = "close"//(menuList.Exists(x => x.ParentMenuNo == menu.MenuNo)) ? "open" : "close"
                    });
                }
            }*/

            //暂时在此生成菜单
            var user = htmlHelper.ViewContext.HttpContext.User as EMISOnline.Utility.FormValidate.CustomPrincipal;
            string rootMenuNo = user.IsStudent ? "MnuStu" : "Mnu";
            string html = "";
            List<Sys_Menu> mRoot = menuList.Where(p => p.ParentMenuNo == rootMenuNo).ToList();
            foreach (Sys_Menu root in mRoot)
            {
                html += "\r\n<div class=\"index_left_menu\"  onclick=\"onMenu('" + ProcessUrl(root.Url) + "');\" >";
                html += "\r\n\t<a href=\"javascript:void();\" onclick=\"onMenu('" + ProcessUrl(root.Url) + "',this);\">" + root.MenuName + "</a>";
                html += createChildMenu(menuList, root.MenuNo);
                html += "\r\n</div>";
            }
            return new MvcHtmlString(html);

            //暂不实现
            //return AccordionTreeExtensions.AccordionTree(htmlHelper, dataItemList, accordiontreeOptions, htmlAttributes);
        }

        private static string createChildMenu(List<Sys_Menu> list,string parentMenuNo)
        {
            string rtn = "";
            List<Sys_Menu> mChild = list.Where(p => p.ParentMenuNo == parentMenuNo).ToList();
            foreach (Sys_Menu m in mChild)
            {
                rtn += "\r\n\t\t<li><a href=\"javascript:void();\" onclick=\"onMenu('" + ProcessUrl(m.Url) + "',this);\">" + m.MenuName + "</a></li>";
            }
            if (rtn.Length > 0)
            {
                rtn = "\r\n\t<div class=\"index_left_menu_child\"><ul>" + rtn + "</ul></div>";
            }
            return rtn;
        }

        private static string ProcessUrl(string url)
        {
            if (url == null) return null;
            string result = url;
            if (url.StartsWith("/"))
            {
                UrlHelper urlHelper = new UrlHelper(HttpContext.Current.Request.RequestContext);
                result = urlHelper.Content("~" + url);
            }

            return result;
        }

        private static List<Sys_Menu> GetMenuList(HtmlHelper htmlHelper)
        {
            using (var scope = AutofacHelper.Container.BeginLifetimeScope())
            {
                IMenuServices menuServices = scope.Resolve<IMenuServices>();

                var user = htmlHelper.ViewContext.HttpContext.User as EMISOnline.Utility.FormValidate.CustomPrincipal;

                var menuList = menuServices.GetMenuByUserID(user.UserID);

                return menuList.ToList();
            }
        }
        /// <summary>
        /// 导航栏，根据菜单ID分析出用户的菜单路径
        /// </summary>
        /// <param name="htmlHelper"></param>
        /// <param name="htmlAttributes">自定义Html属性扩展，用Dictionary的方式定义，例如：new Dictionary<string, string> { 
        ///     { "style", "width: 100%;" }, { "name", "ddlUsers" }
        /// }
        /// </param>
        /// <returns></returns>
        public static MvcHtmlString Position(this HtmlHelper htmlHelper, IDictionary<string, string> htmlAttributes = null)
        {
            string menuNo = HttpContext.Current.Request["MNU"];
            string path = "";
            string html = "";
            if (string.IsNullOrEmpty(menuNo))
            {
                path = "系统首页";
            }
            else
            {
                IMenuServices menuServices = AutofacHelper.Container.Resolve<IMenuServices>();

                path = menuServices.GetFullMenuPath(menuNo);
            }
            if (htmlAttributes == null)
            {
                htmlAttributes = new Dictionary<string, string>();
            }

            html = "<div class=\"position_title\">\n";
            html += "<div class=\"position_content\" " + string.Join(" ", htmlAttributes.Select(x => x.Key + "=\"" + x.Value + "\"")) + ">";
            html += "当前位置：" + path + "</div>\n";
            html += "</div>";

            return MvcHtmlString.Create(html);
        }

        public static string AddMenuParameter(this string url)
        {
            return AddMenuParamenter(url, HttpContext.Current.Request["MNU"]);
        }
        private static string AddMenuParamenter(string url, string menuNo)
        {
            string result;
            bool hasQuestionMark = url.IndexOf('?') > 0;

            if (hasQuestionMark)
            {
                result = url + "&";
            }
            else
            {
                result = url + "?";
            }

            result += "MNU=" + menuNo;

            return result;
        }
    }
}