using BBWY.Client.APIServices;
using BBWY.Client.Models;
using BBWY.Common.Trigger;
using GalaSoft.MvvmLight.Command;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;

namespace BBWY.Client.ViewModels
{
    public class _1688PreviewPurchaseViewModel : BaseVM
    {
        public ICommand FastCreateOrderCommand { get; set; }

        public IList<PurchaseSchemeProductSku> PurchaseSchemeProductSkuList { get; set; }

        public PurchaseScheme PurchaseScheme { get; set; }
        public PurchaseAccount PurchaseAccount { get; set; }
        public bool IsLoading { get => isLoading; set { Set(ref isLoading, value); } }

        public decimal ProductAmount { get => productAmount; set { Set(ref productAmount, value); } }
        public decimal FreightAmount { get => freightAmount; set { Set(ref freightAmount, value); } }
        public decimal TotalAmount { get => totalAmount; set { Set(ref totalAmount, value); } }
        public string ContactName { get => contactName; set { Set(ref contactName, value); } }
        public string Address { get => address; set { Set(ref address, value); } }
        public string Mobile { get => mobile; set { Set(ref mobile, value); } }
        public string Province { get => province; set { Set(ref province, value); } }
        public string City { get => city; set { Set(ref city, value); } }
        public string County { get => county; set { Set(ref county, value); } }
        public string Town { get => town; set { Set(ref town, value); } }
        public string PrucahseRemark { get => prucahseRemark; set { Set(ref prucahseRemark, value); } }

        public PurchaseOrderMode PurchaseOrderMode
        {
            get => purchaseOrderMode; set
            {
                if (Set(ref purchaseOrderMode, value))
                    OnDelayTriggerExecute(Guid.NewGuid().ToString());
            }
        }

        private OrderListViewModel orderListViewModel;
        private GlobalContext globalContext;
        private string orderId;
        private int skuItemCount;
        private bool isLoading;
        private OneBoundAPIService oneBoundAPIService;
        private PurchaseOrderService purchaseOrderService;
        private DelayTrigger delayTrigger;

        private decimal productAmount;
        private decimal freightAmount;
        private decimal totalAmount;
        private string contactName;
        private string address;
        private string mobile;
        private string province;
        private string city;
        private string county;
        private string town;
        private string prucahseRemark;
        private PurchaseOrderMode purchaseOrderMode = PurchaseOrderMode.代发;
        private string tradeMode;

        public _1688PreviewPurchaseViewModel(OneBoundAPIService oneBoundAPIService, PurchaseOrderService purchaseOrderService, GlobalContext globalContext, OrderListViewModel orderListViewModel)
        {
            this.oneBoundAPIService = oneBoundAPIService;
            this.purchaseOrderService = purchaseOrderService;
            this.delayTrigger = new DelayTrigger();
            this.delayTrigger.OnExecute = OnDelayTriggerExecute;
            PurchaseSchemeProductSkuList = new ObservableCollection<PurchaseSchemeProductSku>();
            FastCreateOrderCommand = new RelayCommand(FastCreateOrder);
            this.globalContext = globalContext;
            this.orderListViewModel = orderListViewModel;
            //PurchaseOrderMode = PurchaseOrderMode.代发;
        }

        public void SetData(string orderId, int skuItemCount, PurchaseScheme purchaseScheme, PurchaseAccount purchaseAccount, Consignee consignee)
        {
            this.orderId = orderId;
            this.skuItemCount = skuItemCount;
            this.PurchaseScheme = purchaseScheme;
            this.PurchaseAccount = purchaseAccount;

            this.ContactName = consignee.ContactName;
            this.Address = consignee.Address;
            this.Province = consignee.Province;
            this.City = consignee.City;
            this.County = consignee.County;
            this.Town = consignee.Town;
            //this.Mobile = consignee.Mobile;
        }

        protected override void Load()
        {
            IsLoading = true;
            var waitList = new List<WaitHandle>();
            foreach (var purchaseSchemeProduct in PurchaseScheme.PurchaseSchemeProductList)
            {
                var ewh = new ManualResetEvent(false);
                waitList.Add(ewh);
                Task.Factory.StartNew(() => LoadPurchaseProduct(purchaseSchemeProduct, ewh));
            }

            Task.Factory.StartNew(() =>
            {
                WaitHandle.WaitAll(waitList.ToArray());
                //IsLoading = false;
                if (PurchaseSchemeProductSkuList.Count() > 0)
                    OnDelayTriggerExecute(Guid.NewGuid().ToString());
                else
                {
                    IsLoading = false;
                    App.Current.Dispatcher.Invoke(() => MessageBox.Show("采购方案商品加载失败,请重新打开预览窗口", "提示"));
                }
            });
        }

        protected override void Unload()
        {
            PurchaseSchemeProductSkuList.Clear();
            PurchaseScheme = null;
            orderId = string.Empty;
            tradeMode = string.Empty;
            skuItemCount = 0;
            ProductAmount = FreightAmount = TotalAmount = 0;
            ContactName = Address = Mobile = Province = City = County = Town = PrucahseRemark = string.Empty;

        }

        private void LoadPurchaseProduct(PurchaseSchemeProduct purchaseSchemeProduct, ManualResetEvent ewh)
        {
            var purchaseSchemeProductSkuList = LoadPurchaseProductCore(purchaseSchemeProduct.PurchaseProductId, out string errorMsg);
            if (purchaseSchemeProductSkuList != null && purchaseSchemeProductSkuList.Count > 0)
            {
                App.Current.Dispatcher.Invoke(() =>
                {
                    foreach (var purchaseSchemeProductSku in purchaseSchemeProductSkuList)
                    {
                        if (purchaseSchemeProduct.SelectedSkuIdList.Any(s => s == purchaseSchemeProductSku.PurchaseSkuId))
                        {
                            PurchaseSchemeProductSkuList.Add(purchaseSchemeProductSku);
                            purchaseSchemeProductSku.ItemTotal = skuItemCount;
                            purchaseSchemeProductSku.OnItemTotalChanged = OnItemTotalChanged;
                        }
                    }
                });
            }
            ewh.Set();
            ewh.Dispose();
        }

        private IList<PurchaseSchemeProductSku> LoadPurchaseProductCore(string purchseProductId, out string errorMsg)
        {
            errorMsg = string.Empty;
            //1688商品详情接口
            var response = oneBoundAPIService.GetProductInfo("1688", purchseProductId);
            if (!response.Success)
            {
                //记录日志

                errorMsg = response.Msg;
                Console.WriteLine(errorMsg);
                return null;
            }
            var jobject = response.Data;
            //purchaserId = jobject["item"]["seller_info"].Value<string>("user_num_id");
            //purchaserName = jobject["item"]["seller_info"].Value<string>("title");
            //purchaserLocation = jobject["item"].Value<string>("location");
            //if (checkPurchaserFunc != null)
            //{
            //    errorMsg = checkPurchaserFunc(purchaserId);
            //    if (!string.IsNullOrEmpty(errorMsg))
            //        return null;
            //}

            var skuJArray = (JArray)jobject["item"]["skus"]["sku"];
            if (skuJArray.Count == 0)
            {
                errorMsg = $"商品{purchseProductId}缺少sku信息";
                return null;
            }

            return skuJArray.Select(j => new PurchaseSchemeProductSku()
            {
                ProductId = PurchaseScheme.ProductId,
                SkuId = PurchaseScheme.SkuId,
                PurchaseProductId = purchseProductId,
                Price = j.Value<decimal>("price"),
                PurchaseSkuId = j.Value<string>("sku_id"),
                PurchaseSkuSpecId = j.Value<string>("spec_id"),
                Title = j.Value<string>("properties_name"),
                Logo = GetSkuLogo(j, (JArray)jobject["item"]["prop_imgs"]["prop_img"])
            }).ToList();
        }

        private string GetSkuLogo(JToken skuJToken, JArray prop_img)
        {
            if (!prop_img.HasValues)
                return "pack://application:,,,/Resources/Images/defaultItem.png";
            var properties = skuJToken.Value<string>("properties").Split(';', StringSplitOptions.RemoveEmptyEntries);
            foreach (var p in properties)
            {
                var imgJToken = prop_img.FirstOrDefault(g => g.Value<string>("properties") == p);
                if (imgJToken != null)
                    return imgJToken.Value<string>("url");
            }
            return "pack://application:,,,/Resources/Images/defaultItem.png";
        }

        private void OnItemTotalChanged(int itemTotal)
        {
            Console.WriteLine($"OnItemTotalChanged {DateTime.Now} {itemTotal}");
            this.delayTrigger.SetKey(itemTotal.ToString());
        }

        private void OnDelayTriggerExecute(string key)
        {
            if (string.IsNullOrEmpty(key))
                return;
            IsLoading = true;
            Task.Factory.StartNew(() => purchaseOrderService.PreviewPurchaseOrder(new Consignee()
            {
                Address = Address,
                City = City,
                ContactName = ContactName,
                County = County,
                Mobile = Mobile,
                Province = Province,
                TelePhone = Mobile,
                Town = Town
            }, PurchaseSchemeProductSkuList, Platform.阿里巴巴, PurchaseAccount, PurchaseOrderMode))
                        .ContinueWith(t =>
                        {
                            IsLoading = false;
                            var r = t.Result;
                            if (!r.Success)
                            {
                                ProductAmount = FreightAmount = TotalAmount = 0;
                                tradeMode = string.Empty;
                                App.Current.Dispatcher.Invoke(() => MessageBox.Show(r.Msg, "预览订单报价"));
                                return;
                            }
                            ProductAmount = r.Data.ProductAmount;
                            FreightAmount = r.Data.FreightAmount;
                            TotalAmount = r.Data.TotalAmount;
                            tradeMode = r.Data.OrderTradeType?.Code;
                        });
        }

        private void FastCreateOrder()
        {
            if (TotalAmount == 0)
            {
                MessageBox.Show("总金额为0不能提交订单", "提示");
                return;
            }
            if (string.IsNullOrEmpty(Mobile) ||
                string.IsNullOrEmpty(Address) ||
                string.IsNullOrEmpty(City) ||
                string.IsNullOrEmpty(Province) ||
                string.IsNullOrEmpty(County) ||
                string.IsNullOrEmpty(Town) ||
                string.IsNullOrEmpty(ContactName))
            {
                MessageBox.Show("收货人信息不全", "下单");
                return;
            }

            IsLoading = true;
            Task.Factory.StartNew(() => purchaseOrderService.FastCreateOrder(new Consignee()
            {
                Address = Address,
                City = City,
                ContactName = ContactName,
                County = County,
                Mobile = Mobile,
                Province = Province,
                TelePhone = Mobile,
                Town = Town
            }, PurchaseSchemeProductSkuList,
               Platform.阿里巴巴,
               PurchaseAccount,
               PurchaseOrderMode,
               tradeMode,
               PrucahseRemark,
               orderId,
               globalContext.User.Shop.ShopId,
               PurchaseAccount.Id,
               PurchaseAccount.AccountName,
               PurchaseScheme.PurchaserName)).ContinueWith(t =>
               {
                   IsLoading = false;
                   var r = t.Result;
                   if (!r.Success)
                   {
                       App.Current.Dispatcher.Invoke(() => MessageBox.Show(r.Msg, "下单"));
                       return;
                   }

                   //刷新订单列表
                   orderListViewModel.RefreshOrder();

                   //关闭当前窗口
                   GalaSoft.MvvmLight.Messaging.Messenger.Default.Send<object>(null, "OnlinePurchase_Close");
               });
        }
    }
}