using Ease.Core.DataAccess;
using System;
using System.Data;
using HRM.BO;

namespace HRM.DA
{
    #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, item.EmployeeID, item.EffectDate, item.DepartmentID,
                item.LocationID, item.DesignationID, DataReader.GetNullValue(item.CreatedBy),
                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, item.EffectDate, item.DepartmentID, item.LocationID,
                item.DesignationID, DataReader.GetNullValue(item.ModifiedBy),
                DataReader.GetNullValue(item.ModifiedDate), item.ID);
            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 ID,Emp.EMPLOYEENO,Emp.NAME,Deg.NAME CurrentDeg,Dept.description CurrentDept,"
                    + " Loc.description CurrentLoc,"
                    + " EmpPost.postingdate EffectDate,US.LoginID CommitedBy,EmpPost.CreationDate CommitedOn"
                    + " from EMPLOYEE Emp,department Dept,LOCATION Loc ,USERS US,DESIGNATION Deg,employeeposting 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", PayrollGlobalFunctions.PayrollFirstDateOfMonth(EffectDate),
                    PayrollGlobalFunctions.PayrollLastDateOfMonth(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 PreviousDeg,Dept.description PreviousDept,"
                    + " Loc.description PreviousLoc,EmpPost.postingdate EffectDate,US.UserID CommitedBy,EmpPost.CreationDate CommitedOn"
                    + " from EMPLOYEE Emp,department Dept,LOCATION Loc ,USERS US,DESIGNATION Deg,employeeposting 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", PayrollGlobalFunctions.PayrollFirstDateOfMonth(EffectDate)
                    , payrollTypeID);
            }

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

            return oEmpPosting;
        }

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

        internal static IDataReader Get(TransactionContext tc, int 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, dEffectDate, nEmpID, payrollTypeID);
        }

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

        #endregion

        #region Delete function

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

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

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

        #endregion
    }

    #endregion
}