using Microsoft.Office.Interop.Excel;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace KellyReport_D.Model
{
    internal class ImportContext
    {
        public Workbook ImportWorkbook { get; set; }
        public Microsoft.Office.Interop.Excel.Application Application { get; set; }
        public IList<ClientContact> ClientContactList { get; set; }
        public IList<SalesDetail> SalesDetails { get; set; }
        public class GroupedSalesDetailModel
        {
            public string SalesName { get; set; }
            public string ClientName { get; set; }
            public string ProductNameEN { get; set; }
            public decimal TotalAmount { get; set; }
            public List<SalesDetail> Details { get; set; }
        }

        public IEnumerable<GroupedSalesDetailModel> GroupedSalesDetailBySalesName => SalesDetails
                                .GroupBy(x => x.SalesName.ToUpper())
                                .Select(grouped => new GroupedSalesDetailModel
                                {
                                    SalesName = grouped.Key,
                                    TotalAmount = grouped.Sum(x => x.TotalAmount ?? 0),
                                    Details = grouped.ToList()
                                });

        public IEnumerable<GroupedSalesDetailModel> GetGroupedSalesDetailByClientName(IList<SalesDetail> salesDetails)
        {
            return salesDetails
                            .GroupBy(x => new { SalesName = x.SalesName.ToUpper(), x.ClientName, x.ProductNameEN })
                            .Select(grouped => new GroupedSalesDetailModel
                            {
                                SalesName = grouped.Key.SalesName,
                                ClientName = grouped.Key.ClientName,
                                ProductNameEN = grouped.Key.ProductNameEN,
                                TotalAmount = grouped.Sum(x => x.TotalAmount ?? 0),
                                Details = grouped.ToList()
                            });
        }
    }
}