using System;
using Payroll.BO;
using System.Data;
using System.Linq;
using Ease.CoreV35.Model;
using System.Data.SqlClient;
using Ease.CoreV35.DataAccess;
using System.Collections.Generic;
using Ease.CoreV35.DataAccess.SQL;

namespace Payroll.Service
{
    internal class GlobalFunctionDA
    {
        internal static DateTime GetOperationDate(TransactionContext tc)
        {
            DateTime opDate = DateTime.MinValue;
            SqlParameter[] p = new SqlParameter[1];
            p[0] = new SqlParameter("@OperationDate", SqlDbType.DateTime);
            p[0].Direction = ParameterDirection.Output;
            p[0].Value = DateTime.MinValue;

            tc.ExecuteNonQuery(CommandType.StoredProcedure, "[dbo].[GetOperationDate]", p);

            if (p[0].Value != null && p[0].Value != DBNull.Value)
                opDate = Convert.ToDateTime(p[0].Value);

            return opDate;
        }

        internal static DataSet GetSalarySummary(TransactionContext tc, DateTime fromDate, DateTime toDate)
        {
            DateTime opDate = DateTime.MinValue;
            SqlParameter[] p = new SqlParameter[2];
            p[0] = new SqlParameter("@SalaryMonth", SqlDbType.DateTime);
            p[0].Direction = ParameterDirection.Input;
            p[0].Value = GlobalExtensions.FirstDateOfMonth(fromDate);
            p[1] = new SqlParameter("@SalaryMonthTO", SqlDbType.DateTime);
            p[1].Direction = ParameterDirection.Input;
            p[1].Value = GlobalExtensions.LastDateOfMonth(toDate);

            DataSet summary = tc.ExecuteDataSet(CommandType.StoredProcedure, "[dbo].[SP_SalarySheet]", p);


            return summary;
        }


        internal static string GetMaxCode(TransactionContext tc, string sTableName, string ColumnName)
        {
            object sCode = tc.ExecuteScalar("SELECT MAX(%q) FROM  %q", ColumnName, sTableName);
            if (sCode == DBNull.Value)
                return "";
            return sCode.ToString();
        }

        internal static string GetMaxCode(TransactionContext tc, string sTableName, string ColumnName, int tier)
        {
            object sCode = tc.ExecuteScalar("SELECT MAX(%q) FROM %q where tire=%n ", ColumnName, sTableName, tier);
            if (sCode == DBNull.Value)
                return "";
            return sCode.ToString();
        }

        internal static void BackupDatabase(TransactionContext tc, string sPath)
        {
            tc.ExecuteNonQuery("BACKUP DATABASE %q TO DISK=%s", tc.Connection.Database, sPath);        
        }



    }
}