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
{
    #region  CategoryDA

    internal class CategoryDA
    {
        #region  Constructor

        private CategoryDA() { }

        #endregion

        #region  Insert function

        internal static void Insert(TransactionContext tc, Category item)
        {
            tc.ExecuteNonQuery("INSERT INTO Category(CategoryID, code, description, CreatedBy, CreationDate, SequenceNo, Status,WagesType)" +
            " VALUES(%n, %s, %s, %n, %d, %n, %n,%n)", item.ID.Integer, item.Code, item.Name, item.CreatedBy.Integer, item.CreatedDate, item.Sequence, item.Status, (int)item.WagesType);
        }

        #endregion

        #region  Update function

        internal static void Update(TransactionContext tc, Category item)
        {
            tc.ExecuteNonQuery("UPDATE Category SET code=%s, description=%s, ModifiedBy=%n, ModifiedDate=%d, SequenceNo=%n, Status=%n,WagesType=%n" +
            " WHERE CategoryID=%n", item.Code, item.Name, item.ModifiedBy.Integer, item.ModifiedDate, item.Sequence, item.Status,(int)item.WagesType, item.ID.Integer);
            
        }

        #endregion

        #region Get Function

        internal static IDataReader Get(TransactionContext tc,EnumStatus status)
        {
            if (EnumStatus.Active == status || EnumStatus.Inactive == status)
            {
                return tc.ExecuteReader("SELECT * FROM Category where Status=%n Order By SequenceNo", status);
            }
            else
            {
                return tc.ExecuteReader("SELECT * FROM Category Order By SequenceNo");
            } 
            
        }

        internal static IDataReader Get(TransactionContext tc, ID nID)
        {
            return tc.ExecuteReader("SELECT * FROM Category WHERE CategoryID=%n", nID.Integer);
        }

        internal static IDataReader Get(TransactionContext tc)
        {
            return tc.ExecuteReader("SELECT * FROM Category");
        }

        #endregion

        #region  Delete function

        internal static void Delete(TransactionContext tc, ID nID)
        {
            tc.ExecuteNonQuery("UPDATE [Category] SET CreatedBy=%n,ModifiedBy=%n  Where CategoryID=%n", Payroll.BO.User.CurrentUser.ID.Integer, Payroll.BO.User.CurrentUser.ID.Integer, nID.Integer);
            tc.ExecuteNonQuery("DELETE FROM [Category] WHERE CategoryID=%n", nID.Integer);
        }

        #endregion

        internal static DataSet GetAgeRange(TransactionContext tc, int fromyear, int toyear)
        {
            DataSet rootDataset = new DataSet();
            DataSet tempdataset = new DataSet();
            try
            {
                string query = SQLParser.MakeSQL(@"Select Count(EmployeeID)as ManagementStaff,(Select Count(EmployeeID) 
                                    from Employee where CategoryID=2 and DATEDIFF(YEAR,BIRTHDATE,GETDATE()) between %n and %n)as NonManagementStaff 
                                    from Employee 
                                    where CategoryID=1 and DATEDIFF(YEAR,BIRTHDATE,GETDATE())  between %n and %n ",
                                    fromyear,toyear,fromyear,toyear);

                tempdataset = tc.ExecuteDataSet(query);

                tempdataset.Tables[0].TableName = "AgeRange";
                rootDataset.Tables.Add(tempdataset.Tables[0].Copy());
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
            return rootDataset;
        }
    }

    #endregion
}