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

namespace BBWY.Client.ViewModels
{
    public class ChoosePurchaseSchemeViewModel : BaseVM, IDenpendency
    {
        private PurchaseService purchaseService;
        private GlobalContext globalContext;
        private BindingPurchaseProductViewModel bindingPurchaseProduct;
        public string SkuId { get; set; }
        public string SkuName { get; set; }
        public string OrderId { get; set; }

        public int ItemTotal { get; set; }
        public Consignee Consignee { get; set; }

        public IList<PurchaseScheme> PurchaseSchemeList { get; set; }


        public ICommand DeleteCommand { get; set; }
        public ICommand EditCommand { get; set; }
        public ICommand PreviewPurchaseCommand { get; set; }

        public ChoosePurchaseSchemeViewModel(PurchaseService purchaseService, GlobalContext globalContext, BindingPurchaseProductViewModel bindingPurchaseProduct)
        {
            this.purchaseService = purchaseService;
            this.globalContext = globalContext;
            this.bindingPurchaseProduct = bindingPurchaseProduct;
            PurchaseSchemeList = new ObservableCollection<PurchaseScheme>();
            DeleteCommand = new RelayCommand<PurchaseScheme>(Delete);
            EditCommand = new RelayCommand<PurchaseScheme>(Edit);
            PreviewPurchaseCommand = new RelayCommand<PurchaseScheme>(PreviewPurchase);
        }

        protected override void Load()
        {
            PurchaseSchemeList.Clear();
            Task.Factory.StartNew(() => LoadPurchaseScheme(SkuId));
        }

        protected override void Unload()
        {
            this.ItemTotal = 0;
            this.OrderId = this.SkuId = this.SkuName = string.Empty;
            this.Consignee = null;
            PurchaseSchemeList.Clear();
        }

        public void SetData(string orderId, string skuId, string skuName, int itemTotal, Consignee consignee)
        {
            this.OrderId = orderId;
            this.SkuId = skuId;
            this.SkuName = skuName;
            this.ItemTotal = itemTotal;
            this.Consignee = consignee;
        }

        public void LoadPurchaseScheme(string skuId)
        {
            var purchaseSchemeResponse = purchaseService.GetPurchaseSchemeList(new string[] { SkuId }, globalContext.User.Shop.ShopId);
            if (!purchaseSchemeResponse.Success)
            {
                App.Current.Dispatcher.Invoke(() => MessageBox.Show(purchaseSchemeResponse.Msg, "获取采购方案"));
                return;
            }

            App.Current.Dispatcher.Invoke(() =>
            {
                foreach (var apiModel in purchaseSchemeResponse.Data) PurchaseSchemeList.Add(PurchaseScheme.Convert(apiModel));
            });
        }

        public void Delete(PurchaseScheme purchaseScheme)
        {
            Task.Factory.StartNew(() => purchaseService.DeletePurchaseScheme(purchaseScheme.Id)).ContinueWith(r =>
            {
                var response = r.Result;
                if (response.Success)
                    App.Current.Dispatcher.Invoke(() => PurchaseSchemeList.Remove(purchaseScheme));
                else
                    App.Current.Dispatcher.Invoke(() => MessageBox.Show(response.Msg, "删除采购方案"));
            });
        }

        public void Edit(PurchaseScheme purchaseScheme)
        {
            var skuList = new List<ProductSku>()
            {
                 new ProductSku(){ Id=purchaseScheme.SkuId,ProductId=purchaseScheme.ProductId, Title=SkuName}
            };
            bindingPurchaseProduct.SetData(skuList, purchaseScheme.PurchaserId, purchaseScheme.PurchaserName);
            var bindingView = new Views.Ware.BindingPurchaseProduct();
            var r = bindingView.ShowDialog();
            if (r == true)
                Task.Factory.StartNew(() => LoadPurchaseScheme(SkuId));
        }

        public void PreviewPurchase(PurchaseScheme purchaseScheme)
        {
            var count = globalContext.User.Shop.PurchaseAccountList == null ? 0 : globalContext.User.Shop.PurchaseAccountList.Count();
            if (count > 1)
            {
                //选择采购账号
            }
            else if (count == 1)
            {
                GalaSoft.MvvmLight.Messaging.Messenger.Default.Send<object>(null, "ChoosePurchaseScheme_Close");
                var p = new _1688Purchase(this.OrderId, this.ItemTotal, purchaseScheme, globalContext.User.Shop.PurchaseAccountList[0], this.Consignee);
                p.ShowDialog();
            }
            else
            {
                MessageBox.Show("缺少采购账号", "提示");
                return;
            }
        }
    }
}