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

namespace Payroll.Service
{
    #region EmployeePosting Service
    [Serializable]
    public class EmployeePostingService : ServiceTemplate, IEmployeePostingService
    {
        #region Private functions and declaration
        Cache _cache = new Cache(typeof(EmployeePosting));

        #endregion
        public EmployeePostingService() { }

        private void MapObject(EmployeePosting oEmployeePosting, DataReader oReader)
        {
            base.SetObjectID(oEmployeePosting, oReader.GetID("HREmpPostingID"));
            oEmployeePosting.EmployeeID = oReader.GetID("employeeID");
            oEmployeePosting.EffectDate = oReader.GetDateTime("postingDate").Value;
            oEmployeePosting.DepartmentID = oReader.GetID("departmentID");
            oEmployeePosting.LocationID = oReader.GetID("locationID");
            oEmployeePosting.DesignationID = oReader.GetID("designationID");
            oEmployeePosting.CreatedBy = oReader.GetID("CreatedBy");
            oEmployeePosting.CreatedDate = oReader.GetDateTime("CreationDate").Value;
            oEmployeePosting.ModifiedBy = oReader.GetID("ModifiedBy");
            oEmployeePosting.ModifiedDate = oReader.GetDateTime("ModifiedDate");
            this.SetObjectState(oEmployeePosting, Ease.CoreV35.ObjectState.Saved);
        }
        protected override T CreateObject<T>(DataReader oReader)
        {
            EmployeePosting oEmployeePosting = new EmployeePosting();
            MapObject(oEmployeePosting, oReader);
            return oEmployeePosting as T;
        }
        protected EmployeePosting CreateObject(DataReader oReader)
        {
            EmployeePosting oEmployeePosting = new EmployeePosting();
            MapObject(oEmployeePosting, oReader);
            return oEmployeePosting;
        }
        #region Service implementation
        public  EmployeePosting Get(ID id)
        {
            EmployeePosting oEmployeePosting = new EmployeePosting();
            #region Cache Header
            oEmployeePosting = _cache["Get", id] as EmployeePosting;
            if (oEmployeePosting != null)
                return oEmployeePosting;
            #endregion
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(EmployeePostingDA.Get(tc, id));
                if (oreader.Read())
                {
                    oEmployeePosting = this.CreateObject<EmployeePosting>(oreader);
                }
                oreader.Close();
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
            #region Cache Footer
            _cache.Add(oEmployeePosting, "Get", id);
            #endregion
            return oEmployeePosting;
        }

        public EmployeePosting Get(ID nEmpID, DateTime dEffectDate, int payrollTypeID)
        {
            EmployeePosting oEmployeePosting = new EmployeePosting();
            #region Cache Header
            oEmployeePosting = _cache["Get", nEmpID,dEffectDate] as EmployeePosting;
            if (oEmployeePosting != null)
                return oEmployeePosting;
            #endregion
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(EmployeePostingDA.Get(tc, nEmpID, dEffectDate, payrollTypeID));
                if (oreader.Read())
                {
                    oEmployeePosting = this.CreateObject<EmployeePosting>(oreader);
                }
                oreader.Close();
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
            #region Cache Footer
            _cache.Add(oEmployeePosting, "Get", nEmpID,dEffectDate);
            #endregion
            return oEmployeePosting;
        }

        public ObjectsTemplate<EmployeePosting> GetByEmpID(ID nID)
        {
            #region Cache Header

            ObjectsTemplate<EmployeePosting> employeePostings = _cache["Get", nID] as ObjectsTemplate<EmployeePosting>;
            if (employeePostings != null)
                return employeePostings;

            #endregion

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(EmployeePostingDA.GetEmpid(tc, nID));
                employeePostings = this.CreateObjects<EmployeePosting>(dr);
                dr.Close();
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);

                throw new ServiceException(e.Message, e);

                #endregion
            }

            #region Cache Footer

            _cache.Add(employeePostings, "Get", nID);

            #endregion

            return employeePostings;
        }


        public ObjectsTemplate<EmployeePosting> Get()
        {
            #region Cache Header

            ObjectsTemplate<EmployeePosting> employeePostings = _cache["Get"] as ObjectsTemplate<EmployeePosting>;
            if (employeePostings != null)
                return employeePostings;

            #endregion

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(EmployeePostingDA.Get(tc));
                employeePostings = this.CreateObjects<EmployeePosting>(dr);
                dr.Close();

                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);

                throw new ServiceException(e.Message, e);

                #endregion
            }

            #region Cache Footer

            _cache.Add(employeePostings, "Get");

            #endregion

            return employeePostings;
        }

        public ID Save(EmployeePosting oEmployeePosting)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                if (oEmployeePosting.IsNew)
                {
                    int id = tc.GenerateID("employeeposting", "hremppostingid");
                    base.SetObjectID(oEmployeePosting, ID.FromInteger(id));
                    EmployeePostingDA.DeleteByPostingDate(tc, oEmployeePosting.EffectDate,oEmployeePosting.EmployeeID);
                    EmployeePostingDA.Insert(tc, oEmployeePosting);
                    EmployeeDA.UpdateEmpPosting(tc, oEmployeePosting);
                }
                else
                {
                    EmployeePostingDA.Update(tc, oEmployeePosting);
                    EmployeeDA.UpdateEmpPosting(tc, oEmployeePosting);
                }
                tc.End();
                
                return oEmployeePosting.ID;
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
        }

        public void Delete(ID id)
        {
            TransactionContext tc = null;
            try
            {
                EmployeePostingService osvr = new EmployeePostingService();
                EmployeePosting oposing = osvr.Get(id);
                tc = TransactionContext.Begin(true);

                EmployeePostingDA.Delete(tc, id);
                ObjectsTemplate<EmployeePosting> employeePostings = this.GetByEmpID(tc, oposing.EmployeeID);
                if (employeePostings == null || employeePostings.Count == 0)
                {
                    EmployeePosting oEmployeePosting = new EmployeePosting();
                    oEmployeePosting.DepartmentID =null;
                    oEmployeePosting.DesignationID =null;
                    oEmployeePosting.LocationID = null;
                    oEmployeePosting.EmployeeID = oposing.EmployeeID;
                    EmployeeDA.UpdateEmpPosting(tc, oEmployeePosting);

                }
                else
                {
                    EmployeeDA.UpdateEmpPosting(tc, employeePostings[0]);
                }
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
        }

        public ObjectsTemplate<EmployeePosting> GetByEmpID(TransactionContext tc, ID nID)
        {
            ObjectsTemplate<EmployeePosting> employeePostings = null;
            try
            {
                DataReader dr = new DataReader(EmployeePostingDA.GetEmpid(tc, nID));
                employeePostings = this.CreateObjects<EmployeePosting>(dr);
                dr.Close();
            }
            catch (Exception e)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);

                throw new ServiceException(e.Message, e);

                #endregion
            }


            return employeePostings;
        }

        public void DeleteAll()
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                EmployeePostingDA.DeleteAll(tc);
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
        }

        public DataSet GetEmpCurrentPosting(DateTime EffectDate, int payrollTypeID)
        {
            DataSet oEmpPosting = new DataSet();
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                oEmpPosting = EmployeePostingDA.GetEmpCurrentPosting(tc, EffectDate, payrollTypeID);
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
            return oEmpPosting;
        }

        public DataSet GetEmpPrvPosting(DateTime EffectDate, int payrollTypeID)
        {
            DataSet oEmpPosting = new DataSet();
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                oEmpPosting = EmployeePostingDA.GetEmpPrvPosting(tc, EffectDate, payrollTypeID);
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
            return oEmpPosting;
        }

        #endregion
    }
    #endregion
}