using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Transactions;

namespace bnhtrade.Core.Data.Database.Account
{
    public class ReadInvoiceLineItem : Connection
    {
        public ReadInvoiceLineItem(string sqlConnectionString) : base(sqlConnectionString)
        {
            Innit();
        }

        public Dictionary<string, int> AccountCodeList { get; private set; }

        public Dictionary<string, string> TaxCodeList { get; private set; }

        private void Innit()
        {
            AccountCodeList = new Dictionary<string, int>();
            TaxCodeList = new Dictionary<string, string>();
        }

        public Model.Account.InvoiceLineItem ByItemCode(string itemCode)
        {
            if (string.IsNullOrWhiteSpace(itemCode)) { return null; }

            var result = ByItemCode(new List<string>{ itemCode });

            if (!result.Any())
            {
                return null;
            }
            else
            {
                return result[itemCode];
            }
        }

        public Dictionary<string, Model.Account.InvoiceLineItem> ByItemCode(List<string> itemCodeList)
        {
            Innit();
            var resultList = new Dictionary<string, Model.Account.InvoiceLineItem>();

            if (itemCodeList == null || !itemCodeList.Any()) 
            { return resultList; }

            string sql = @"
                SELECT tblAccountInvoiceLineItem.ItemCode
	                ,tblAccountInvoiceLineItem.ItemName
	                ,tblAccountInvoiceLineItem.ItemDescription
	                ,tblAccountInvoiceLineItem.IsNewReviewRequired
	                ,tblAccountInvoiceLineItem.InvoiceLineEntryEnable
	                ,tblAccountChartOf.AccountCode
	                ,tblAccountTaxCode.TaxCode
                FROM tblAccountInvoiceLineItem
                LEFT OUTER JOIN tblAccountTaxCode ON tblAccountInvoiceLineItem.AccountTaxCodeID_Default = tblAccountTaxCode.AccountTaxCodeID
                LEFT OUTER JOIN tblAccountChartOf ON tblAccountInvoiceLineItem.AccountChartOfID_Default = tblAccountChartOf.AccountChartOfID
                WHERE ";

            var whereBuilder = new SqlWhereBuilder();
            whereBuilder.In("tblAccountInvoiceLineItem.ItemCode", itemCodeList);
            sql += whereBuilder.SqlWhereString;

            using (SqlConnection conn = new SqlConnection(sqlConnectionString))
            {
                conn.Open();

                using (SqlCommand cmd = new SqlCommand(sql, conn))
                {
                    foreach (var param in whereBuilder.ParameterList)
                    {
                        cmd.Parameters.AddWithValue(param.Key, param.Value);
                    }

                    using (SqlDataReader reader = cmd.ExecuteReader())
                    {
                        if (reader.HasRows)
                        {
                            while (reader.Read())
                            {
                                var result = new Model.Account.InvoiceLineItem();

                                result.ItemCode = reader.GetString(0);
                                result.Name = reader.GetString(1);
                                if (!reader.IsDBNull(2)) { result.Description = reader.GetString(2); }
                                result.IsNewReviewRequired = reader.GetBoolean(3);
                                result.InvoiceLineEntryEnabled = reader.GetBoolean(4);

                                if (!reader.IsDBNull(5)) 
                                {
                                    AccountCodeList.Add(result.ItemCode, reader.GetInt32(5));
                                }
                                if (!reader.IsDBNull(6)) 
                                {
                                    TaxCodeList.Add(result.ItemCode, reader.GetString(6));
                                }

                                resultList.Add(result.ItemCode, result);
                            }
                        }

                        return resultList;
                    }
                }
            }
        }
    }
}