using GalaSoft.MvvmLight;
using GalaSoft.MvvmLight.Ioc;
using Muchinfo.MTPClient.Account.Utilities;
using Muchinfo.MTPClient.Bank.ViewModels;
using Muchinfo.MTPClient.Data;
using Muchinfo.MTPClient.Data.Enums;
using Muchinfo.MTPClient.Delivery.Utilities;
using Muchinfo.MTPClient.Infrastructure.Utilities;
using Muchinfo.MTPClient.IService;
using Muchinfo.MTPClient.Listing.Utilities;
using Muchinfo.MTPClient.Report;
using Muchinfo.MTPClient.Sale.Utilities;
using System;
using System.Collections.Generic;
using System.Linq;
//----------------------------------------------------------------
//Module Name:  $safeprojectname$
//Purpose:      
//CopyRight:    Muchinfo
//History:
//----------------------------------------------------------------
//DateTime		2016/2/3 15:26:19
//Author       
//Description   Create
//----------------------------------------------------------------
using System.Windows;
using Muchinfo.MTPClient.Analysis.Views;
using Muchinfo.MTPClient.Infrastructure.Helpers;
using Muchinfo.MTPClient.Infrastructure.Interfaces;

namespace Muchinfo.MTPClient.UI.ViewModels
{
    public class MenuTreeViewModel : ViewModelBase
    {


        public MenuTreeViewModel()
        {
            MessengerHelper.DefaultRegister<LayoutStyle>(this, MessengerTokens.UpdateLayoutChange, (layout) =>
            {
                LogInfoHelper.WriteInfo("MenuTreeViewModel Enter MessengerTokens.UpdateLayoutChange");
                LoadMenus(UserManager.AccessFuncMenus);// 重新加载界面
            });
        }

        private SysItemList _mSysItemList;

        public SysItemList MenuSource
        {
            get { return _mSysItemList; }
            set
            {
                Set(() => MenuSource, ref _mSysItemList, value);
            }
        }


        //public void InitTreeview()
        //{
        //    var loginService = SimpleIoc.Default.GetInstance<ILoginService>();
        //    loginService.QueryAccountFuncMenu(UserManager.CurrentTradeAccount.LoginCode, FuncMenusSuccess, FuncMenusErrorFunc);
        //}

        public void LoadMenus(List<SysMenuItem> funcs)
        {

            ////todo:获取程序集实现了IModuleMenuService
            var account = new AccountMenuService();

            var childMenus = account.GetModuleMenuItems();
            var bankService = new BankMenuService();
            var bankMenus = bankService.GetModuleMenuItems();

            var saleService = new SaleMenuService();
            var saleMenus = saleService.GetModuleMenuItems();

            var reportService = new ReportMenuService();
            var reportMenus = reportService.GetModuleMenuItems();
            //交收管理 Add By DK 20160804
            var deliveryService = new DeliveryMenuService();
            var deliveryMenus = deliveryService.GetModuleMenuItems();

            //var listingService = new ListingMenuService();
            //var listingMenus = listingService.GetModuleMenuItems();
            //todo:修改添加其他模块的菜单 
            foreach (var sysMenuItem in bankMenus.Keys)
            {
                childMenus[sysMenuItem] = bankMenus[sysMenuItem];
            }
            foreach (var sysMenuItem in saleMenus.Keys)
            {
                childMenus[sysMenuItem] = saleMenus[sysMenuItem];
            }
            if (reportMenus!=null) //错误 #24677【客户端报表】交易员登录客户端，应不显示报表菜单
            foreach (var sysMenuItem in reportMenus.Keys)
            {
                childMenus[sysMenuItem] = reportMenus[sysMenuItem];
            }
            //交收管理 Add By DK 20160804
            foreach (var sysMenuItem in deliveryMenus.Keys)
            {
                childMenus[sysMenuItem] = deliveryMenus[sysMenuItem];
            }

            //挂牌
            //foreach (var sysMenuItem in listingMenus.Keys)
            //{
            //    childMenus[sysMenuItem] = listingMenus[sysMenuItem];
            //}
            //交易菜单  
            if (UserManager.TradeFuncMenus != null && UserManager.TradeFuncMenus.Any())
            {
               
                foreach (var sysMenuItem in UserManager.TradeFuncMenus )
                {
                    if (childMenus.ContainsKey(sysMenuItem.SysCommandType))   ////交易菜单有默认的命令，使用自身的参数
                    {
                        childMenus[sysMenuItem.SysCommandType].Title = sysMenuItem.Title;
                        sysMenuItem.Command = childMenus[sysMenuItem.SysCommandType].Command;
                    }
                    else
                    {
                        childMenus[sysMenuItem.SysCommandType] = sysMenuItem;
                    }
                    if (sysMenuItem.SysCommandType == MenuCommandType.Cancel)   //撤单默认为false
                    {
                        sysMenuItem.IsEnabled = false;
                    }
                   
                }
            }

            CreateAccessMenus(funcs, childMenus); ////
        }


        /// <summary>
        ///  
        /// </summary>
        /// <param name="funcs"></param>
        private void FuncMenusSuccess(List<SysMenuItem> funcs)
        {
            if (funcs == null || !funcs.Any()) return;
            UserManager.AccessFuncMenus = funcs;
            Application.Current.Dispatcher.BeginInvoke(new Action(() =>
            {
                this.LoadMenus(UserManager.AccessFuncMenus); ////树菜单生成
            }));

        }


        /// <summary>
        /// 错误处理
        /// </summary>
        /// <param name="error">错误内容</param>
        private void FuncMenusErrorFunc(ErrorEntity error)
        { 
            Application.Current.Dispatcher.BeginInvoke(new Action(() =>
            {
                //todo:查询菜单出错提示
            }));
        }

        /// <summary>
        /// 查找交易汇总节点
        /// </summary>
        /// <param name="funcs"></param>
        /// <returns>如果有，返回true</returns>
        private bool HasTradeSummary(List<SysMenuItem> funcs)
        {
            if (funcs == null)
            {
                return false;
            }
            // 查找交易汇总的节点
            var found = funcs.Find((item) =>
            {
                if (item.Children == null)
                {
                    return false;
                }
                // 再查查子类节点
                var foundChild = item.Children.Find((c) =>
                {
                    var commandType = UserManager.GetMenuCommandType(c.FuncMenuCode);
                    return commandType == MenuCommandType.TradeSum; // 如果有交易汇总tree节点，
                });
                return foundChild != null;
            });
            return found != null;
        }

        /// <summary>
        /// 重新规律tree的节点
        /// </summary>
        /// <param name="funcs"></param>
        /// <returns></returns>
        private List<SysMenuItem> ResetTreeWithLayoutType(List<SysMenuItem> funcs)
        {
            List<SysMenuItem> temps = new List<SysMenuItem>(funcs);
            if (UserManager.GetCurrentLayoutStyle() == LayoutStyle.Tradition) // 不需要显示交易节点
            {
                for (int i = 0; i < temps.Count; i++)
                {
                    if (temps[i].SysCommandType == MenuCommandType.Trade)// 不需要交易
                    {
                        temps.RemoveAt(i);
                        break;
                    }
                }
            }
            return temps;
        }

        /// <summary>
        /// 生成配置有权限的菜单 
        /// </summary>
        /// <param name="funcs"></param>
        /// <param name="menuItems"></param>
        private void CreateAccessMenus(List<SysMenuItem> funcs, Dictionary<MenuCommandType, SysMenuItem> menuItems)
        {
            List<SysMenuItem> temps = ResetTreeWithLayoutType(funcs);
            var menuSource = new SysItemList();
            bool hasTradeSummary = HasTradeSummary(temps);// :是否包含交易汇总，如果有，表示会显示在账户资金前面，那账户资金就不需要高亮了
            
            foreach (var funcMenu in temps)
            {
                var commandType = UserManager.GetMenuCommandType(funcMenu.FuncMenuCode);
                Console.WriteLine(funcMenu.Title + ":" + funcMenu.FuncMenuCode);
                if (menuItems.ContainsKey(commandType))
                {
                    RecurMenus(funcMenu, menuItems[commandType], menuItems);
                    menuItems[commandType].Title = funcMenu.Title;
                    menuSource.Add(menuItems[commandType]);
                    if (commandType == MenuCommandType.AccountInfo)
                    {
                        if (!hasTradeSummary)// 如果没有交易汇总节点，那账户资金就可以高亮了
                        {
                            menuItems[commandType].IsSelected = true;
                        }
                        menuItems[commandType].Command.Execute(menuItems[commandType]);
                    }
                    //if (commandType == MenuCommandType.Trade || commandType==MenuCommandType.Query)     //展开交易和查询菜单
                    //{
                    //    menuItems[commandType].IsExpanded = true;
                    //}
                    menuItems[commandType].IsExpanded = true;
                }
            }
            
            MenuSource = menuSource;
        }

        /// <summary>
        ///生成菜单树
        /// </summary>
        /// <param name="funcMenu">服务端父功能菜单</param>
        /// <param name="parentMenu">本地菜单</param>
        /// <param name="menuItems">菜单字典</param>
        private void RecurMenus(SysMenuItem funcMenu, SysMenuItem parentMenu,
            Dictionary<MenuCommandType, SysMenuItem> menuItems)
        {
            if (parentMenu.Children == null)
            {
                parentMenu.Children = new List<SysMenuItem>();
            }
            var items = new List<SysMenuItem>();
            items.Add(funcMenu);
            bool hasTradeSummary = HasTradeSummary(items);// :是否包含交易汇总，如果有，表示会显示在账户资金前面，那账户资金就不需要高亮了
            // FIXME: 先选择一下资金账号，以便初始化相关对应 @_@!...
            foreach (var childItem in funcMenu.Children)
            {
                var commandType = UserManager.GetMenuCommandType(childItem.FuncMenuCode);
                if (menuItems.ContainsKey(commandType))
                {
                    if (commandType == MenuCommandType.AccountInfo)
                    {
                        if (!hasTradeSummary)// 如果没有交易汇总 那就显示账户资金高亮
                        {
                            menuItems[commandType].IsSelected = true;
                        }
                        
                        menuItems[commandType].Command.Execute(menuItems[commandType]);
                    }
                }
                //if (childItem.Children != null && childItem.Children.Any())
                //{
                //    RecurMenus(childItem, menuItems[commandType], menuItems);
                //}
            }

            foreach (var childItem in funcMenu.Children)
            {
                var commandType = UserManager.GetMenuCommandType(childItem.FuncMenuCode);
                Console.WriteLine(childItem.Title + ":" + childItem.FuncMenuCode);

                if ( menuItems.ContainsKey(commandType))
                {
                    menuItems[commandType].Title = childItem.Title;
                    ////添加父项，以便后面判断
                    menuItems[commandType].ParentItem = parentMenu;
                    parentMenu.Children.Add(menuItems[commandType]);
                    //if (commandType == MenuCommandType.AccountInfo)
                    //{
                    //    menuItems[commandType].IsSelected = true;
                    //    menuItems[commandType].Command.Execute(menuItems[commandType]);
                    //}
                    // 默认选择“交易汇总”
                    if (commandType == MenuCommandType.TradeSum)
                    {
                        menuItems[commandType].IsSelected = true;
                        menuItems[commandType].Command.Execute(menuItems[commandType]);
                    }
                }
                if (childItem.Children != null && childItem.Children.Any())
                {
                    RecurMenus(childItem, menuItems[commandType], menuItems);
                }
            }
        }

        /// <summary>
        /// 查找菜单
        /// </summary>
        /// <param name="menuCommandType"></param>
        /// <returns></returns>
        public SysMenuItem FindSystemMenuItem(MenuCommandType menuCommandType)
        {
            if (MenuSource == null || !MenuSource.Any())
            {
                return null;
            }
            foreach (var menuItem in MenuSource)
            {
                if (menuItem.SysCommandType == menuCommandType)
                {
                    return menuItem;
                }
                else
                {
                    var item = FindTreeViewMenuItem(menuItem, menuCommandType);
                    if (item != null)
                    {
                        return item;
                    }
                }
               
            }
            return null;
        }

        /// <summary>
        /// 遍历树查找相应的菜单项
        /// </summary>
        /// <param name="sysItem"></param>
        /// <param name="menuCommandType"></param>
        /// <returns></returns>
        public SysMenuItem FindTreeViewMenuItem(SysMenuItem sysItem, MenuCommandType menuCommandType)
        {
            if (sysItem.Children == null)
            {
                return null;
            }
            foreach (var menuItem in sysItem.Children)
            {
                if (menuItem.SysCommandType == menuCommandType)
                {
                    return menuItem;
                }
                else
                {
                    var item = FindTreeViewMenuItem(menuItem, menuCommandType);
                    if (item != null)
                    {
                        return item;
                    }
                }
            }
            return null;
        }
    }

    public class SysItemList : List<SysMenuItem>
    {

    }
}