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  PFTransactionDA

    internal class PFTransactionDA
    {
        #region  Constructor

        private PFTransactionDA() { }

        #endregion

        #region  Insert function

        internal static void Insert(TransactionContext tc, PFTransaction item)
        {
            tc.ExecuteNonQuery("INSERT INTO PFTransaction(PFTRANID, employeeID, tranDate, tranAmount, tranType, CreatedBy, CreationDate)" +
            " VALUES(%n, %n, %d, %n, %n, %n, %d)", item.ID.Integer, item.EmployeeID.Integer, item.MonthDate, item.TranAmount, item.TranType, item.CreatedBy.Integer, item.CreatedDate);
        }

        #endregion

        #region  Update function

        internal static void Update(TransactionContext tc, PFTransaction item)
        {
            tc.ExecuteNonQuery("UPDATE PFTransaction SET  tranAmount=%n, ModifiedBy=%n, ModifiedDate=%d" +
            " WHERE employeeID=%n, tranDate=%d, tranType=%n", item.TranAmount, item.EmployeeID.Integer, item.MonthDate, item.TranType
            , item.ModifiedBy.Integer, item.ModifiedDate);
        }

        #endregion

        #region Get Function

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

        }

        internal static double GetPFAmount(TransactionContext tc, int nEmpID)
        {
            double nAmount = 0.0;
            object obj = tc.ExecuteScalar("Select sum(tranAmount)  from PFTransaction where employeeID=%n", nEmpID);
            if (obj != null && obj.ToString() != "")
            {
                nAmount = Convert.ToDouble(obj);
            }
            else
            {
                nAmount = 0.0;
            }
            return nAmount;
        }

        internal static DataSet GetPFBalance(TransactionContext tc, int nEmpID, DateTime salaryMonth)
        {
            string sQl = SQLParser.MakeSQL("SELECT  '1' AS TranTP,'Own Contribution' AS DESCRIPTION, IsNUll(SUM(TranAmount),0) AS Amount FROM PFTransaction WHERE TranType=1 AND EmployeeID=%n and TranDate<%d" +
            " UNION (SELECT '2' AS TranTP,'Company Contribution' AS DESCRIPTION, IsNUll(SUM(TranAmount),0) AS Amount FROM PFTransaction WHERE TranType=2 AND EmployeeID=%n and TranDate<%d) " +
            " UNION (SELECT '3' AS TranTP,'Interest' AS DESCRIPTION, IsNUll(SUM(TranAmount),0) AS Amount FROM PFTransaction WHERE TranType=3 AND EmployeeID=%n and TranDate<%d)", nEmpID, salaryMonth, nEmpID, salaryMonth, nEmpID, salaryMonth);
            DataSet pfBalance = tc.ExecuteDataSet(sQl);

            return pfBalance;
        }
        internal static DataSet GetPFBalance(TransactionContext tc, DateTime salaryMonth)
        {
            string sQl = SQLParser.MakeSQL(@"SELECT pf.EmployeeID, pf.pf,cpf.CPF,pfint.PFInt,cpfint.CPFInt from
                                            (SELECT e.EmployeeID,SUM(p.TranAmount) PF FROM PFTransaction p, Employee e
                                            WHERE e.EmployeeID=p.EmployeeID AND 
                                            e.JoiningDate<=%d AND p.TranType=1
                                            GROUP BY e.EmployeeID) pf, 
                                             (SELECT e.EmployeeID,SUM(p.TranAmount) CPF FROM PFTransaction p, Employee e
                                            WHERE e.EmployeeID=p.EmployeeID AND 
                                            e.JoiningDate<=%d AND p.TranType=2
                                            GROUP BY e.EmployeeID)cpf,
                                            (SELECT e.EmployeeID,SUM(p.TranAmount) PFInt FROM PFTransaction p, Employee e
                                            WHERE e.EmployeeID=p.EmployeeID AND 
                                            e.JoiningDate<=%d AND p.TranType=4
                                            GROUP BY e.EmployeeID)pfint,
                                            (SELECT e.EmployeeID,SUM(p.TranAmount) CPFInt FROM PFTransaction p, Employee e
                                            WHERE e.EmployeeID=p.EmployeeID AND 
                                            e.JoiningDate<=%d AND p.TranType=5
                                            GROUP BY e.EmployeeID)cpfint
                                            WHERE pf.EmployeeID=cpf.EmployeeID AND
                                            cpf.EmployeeID=pfint.EmployeeID AND
                                            pfint.EmployeeID=cpfint.EmployeeID", salaryMonth, salaryMonth, salaryMonth, salaryMonth);
            DataSet pfBalance = tc.ExecuteDataSet(sQl);

            return pfBalance;
        }
        #endregion

        #region  Delete function

        internal static void Delete(TransactionContext tc, ID employeeId, DateTime month, EnumPFTranType type)
        {
            tc.ExecuteNonQuery("DELETE FROM [PFTransaction] WHERE EmployeeId=%n AND trandate=%d AND tranType=%n", employeeId.Integer, month, (int)type);
        }

        #endregion
    }

    #endregion
}