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  EmployeePostingDA

    internal class EmployeePostingDA
    {
        #region  Constructor

        private EmployeePostingDA() { }

        #endregion

        #region  Insert function

        internal static void Insert(TransactionContext tc, EmployeePosting item)
        {
            string sSQL = SQLParser.MakeSQL("INSERT INTO EmployeePosting(HREmpPostingID, employeeID, postingDate, departmentID, locationID, designationID, CreatedBy, CreationDate)" +
            " VALUES(%n, %n, %d, %n, %n, %n, %n, %d)", item.ID.Integer, item.EmployeeID.Integer, item.EffectDate, item.DepartmentID.Integer, item.LocationID.Integer, item.DesignationID.Integer, DataReader.GetNullValue(item.CreatedBy.Integer), DataReader.GetNullValue(item.CreatedDate));
            tc.ExecuteNonQuery(sSQL);
        }

        #endregion

        #region  Update function

        internal static void Update(TransactionContext tc, EmployeePosting item)
        {
            string sSQL = SQLParser.MakeSQL("UPDATE EmployeePosting SET employeeID=%n, postingDate=%d, departmentID=%n, locationID=%n, designationID=%n, ModifiedBy=%n, ModifiedDate=%d" +
            " WHERE HREmpPostingID=%n", item.EmployeeID.Integer, item.EffectDate, item.DepartmentID.Integer, item.LocationID.Integer, item.DesignationID.Integer, DataReader.GetNullValue(item.ModifiedBy.Integer), DataReader.GetNullValue(item.ModifiedDate), item.ID.Integer);
            tc.ExecuteNonQuery(sSQL);
        }

        #endregion

        #region Get Function

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

        }

        internal static DataSet GetEmpCurrentPosting(TransactionContext tc, DateTime EffectDate, int payrollTypeID)
        {
            DataSet oEmpPosting = new DataSet();
            try
            {

                oEmpPosting = tc.ExecuteDataSet("Select Emp.EmployeeID as ID,Emp.EMPLOYEENO,Emp.NAME,Deg.NAME AS CurrentDeg,Dept.description as CurrentDept,"
                                                + " Loc.description as CurrentLoc,"
                                                + " EmpPost.postingdate as EffectDate,US.LoginID as CommitedBy,EmpPost.CreationDate as CommitedOn"
                                                + " from EMPLOYEE as Emp,department as Dept,LOCATION AS Loc ,USERS as US,DESIGNATION as Deg,employeeposting as EmpPost"
                                                + " WHERE Emp.DESIGNATIONID=Deg.DESIGNATIONID"
                                                + " AND Emp.departmentid=Dept.departmentid"
                                                + " AND Emp.locationid=Loc.locationid"
                                                + " and Emp.EmployeeID=EmpPost.EmployeeID"
                                                
                                                + " AND US.USERID=EmpPost.CreatedBy"
                                                + " AND EmpPost.postingdate between %d and %d ANd Emp.PayrollTypeID=%n"
                                                + " order by Emp.EMPLOYEENO", GlobalFunctions.FirstDateOfMonth(EffectDate),
                                                GlobalFunctions.LastDateOfMonth(EffectDate), payrollTypeID);

            }

            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
            return oEmpPosting;
        }

        internal static DataSet GetEmpPrvPosting(TransactionContext tc, DateTime EffectDate, int payrollTypeID)
        {
            DataSet oEmpPosting = new DataSet();
            try
            {

                oEmpPosting = tc.ExecuteDataSet("Select Emp.EMPLOYEENO,Emp.NAME,Deg.NAME AS PreviousDeg,Dept.description as PreviousDept,"
                                                    + " Loc.description as PreviousLoc,EmpPost.postingdate as EffectDate,US.UserID as CommitedBy,EmpPost.CreationDate as CommitedOn"
                                                    + " from EMPLOYEE as Emp,department as Dept,LOCATION AS Loc ,USERS as US,DESIGNATION as Deg,employeeposting as EmpPost"
                                                    + " WHERE EmpPost.DESIGNATIONID=Deg.DESIGNATIONID"
                                                    + " AND EmpPost.departmentid=Dept.departmentid"
                                                    + " AND EmpPost.locationid=Loc.locationid"
                                                    + " and Emp.EmployeeID=EmpPost.EmployeeID"
                                                    + " AND US.USERID=EmpPost.CreatedBy"
                                                    + " AND EmpPost.postingdate < %d ANd Emp.PayrollTypeID=%n"
                                                    + " order by Emp.EMPLOYEENO", GlobalFunctions.FirstDateOfMonth(EffectDate)
                                                    , payrollTypeID);

            }

            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
            return oEmpPosting;
        }

        internal static IDataReader Get(TransactionContext tc, ID nID)
        {
            return tc.ExecuteReader("SELECT * FROM EmployeePosting WHERE HREmpPostingID=%n Order By POSTINGDATE", nID.Integer);
        }

        internal static IDataReader Get(TransactionContext tc, ID nEmpID, DateTime dEffectDate, int payrollTypeID)
        {
            return tc.ExecuteReader(@"Select * from employeeposting where 
                                    postingdate=(Select MAX(postingdate) from employeeposting where EMPLOYEEID=%n and postingdate<%d) 
                                    AND EMPLOYEEID=(Select EMPLOYEEID from Employee where EMPLOYEEID=%n and PAYROLLTYPEID=%n) ", nEmpID.Integer, dEffectDate, nEmpID.Integer, payrollTypeID);
        }

        internal static IDataReader GetEmpid(TransactionContext tc, ID nID)
        {
            return tc.ExecuteReader("SELECT * FROM EmployeePosting WHERE employeeID=%n Order By POSTINGDATE", nID.Integer);
        }
        #endregion

        #region  Delete function

        internal static void Delete(TransactionContext tc, ID nID)
        {
            tc.ExecuteNonQuery("DELETE FROM EmployeePosting WHERE HREmpPostingID=%n", nID.Integer);
        }

        internal static void DeleteByPostingDate(TransactionContext tc, DateTime postingDate,ID empID)
        {
            string sSQL = SQLParser.MakeSQL("Delete from EmployeePosting Where postingdate >= %d and EMPLOYEEID=%n", postingDate, empID.Integer);
            tc.ExecuteNonQuery(sSQL);
        }

        internal static void DeleteAll(TransactionContext tc)
        {
            tc.ExecuteNonQuery("DELETE FROM [EmployeePosting]");
        }

        #endregion

       
    }

    #endregion
}