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

namespace EMIS.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.StartsWith("http://") ? "" : "/") + menu.Url + (menu.Url.Contains("?") ? "&" : "?") + "MNU=" + menu.MenuNo)
                            : null,
                        ParentMnuId = menu.ParentMenuNo,
                        state = "close"//(menuList.Exists(x => x.ParentMenuNo == menu.MenuNo)) ? "open" : "close"
                    });
                }
            }

            return AccordionTreeExtensions.AccordionTree(htmlHelper, dataItemList, accordiontreeOptions, htmlAttributes);
        }

        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 EMIS.Utility.FormValidate.CustomPrincipal;

                var menuList = menuServices.GetMenuByUserIDAndRoleID(user.UserID, user.RoleID);

                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
            {
                using (var scope = AutofacHelper.Container.BeginLifetimeScope())
                {
                    IMenuServices menuServices = scope.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;
        }
    }
}