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 PayScale Service
    [Serializable]
    public class PayScaleService : ServiceTemplate, IPayScaleService
    {
        #region Private functions and declaration
        Cache _cache = new Cache(typeof(PayScale));

        #endregion
        public PayScaleService() { }

        private void MapObject(PayScale oPayScale, DataReader oReader)
        {
            base.SetObjectID(oPayScale, oReader.GetID("PAYSCALEID"));
            oPayScale.GradeID = oReader.GetID("GradeID");
            oPayScale.ItemID = oReader.GetInt32("ALLOWANCEID").Value;
            oPayScale.InitialAmount = oReader.GetDouble("INITIALAMOUNT").Value;
            oPayScale.IncPercentage = oReader.GetDouble("PercentageInc").Value;
            oPayScale.NoOfStep = oReader.GetInt32("NOOFSLABS").Value;
            oPayScale.EffectDate = oReader.GetDateTime("EffectDate").Value;
            oPayScale.ItemType =(EnumPayScaleItemType)oReader.GetInt32("Type").Value;
            this.SetObjectState(oPayScale, Ease.CoreV35.ObjectState.Saved);
        }
        protected override T CreateObject<T>(DataReader oReader)
        {
            PayScale oPayScale = new PayScale();
            MapObject(oPayScale, oReader);
            return oPayScale as T;
        }
        protected PayScale CreateObject(DataReader oReader)
        {
            PayScale oPayScale = new PayScale();
            MapObject(oPayScale, oReader);
            return oPayScale;
        }
        #region Service implementation
        public PayScale Get(ID id)
        {
            PayScale oPayScale = new PayScale();
            #region Cache Header
            oPayScale = _cache["Get", id] as PayScale;
            if (oPayScale != null)
                return oPayScale;
            #endregion
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(PayScaleDA.Get(tc, id));
                if (oreader.Read())
                {
                    oPayScale = this.CreateObject<PayScale>(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(oPayScale, "Get", id);
            #endregion
            return oPayScale;
        }

        public PayScale Get(ID nGradeID, ID nAllowID, DateTime nextPayProcessDate)
        {
            PayScale oPayScale = new PayScale();
            #region Cache Header
            oPayScale = _cache["Get", nGradeID, nAllowID] as PayScale;
            if (oPayScale != null)
                return oPayScale;
            #endregion
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(PayScaleDA.Get(tc, nGradeID, nAllowID, nextPayProcessDate));
                if (oreader.Read())
                {
                    oPayScale = this.CreateObject<PayScale>(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(oPayScale, "Get", nGradeID, nAllowID);
            #endregion
            return oPayScale;
        }
        public PayScale GetByGrade(ID nGradeID)
        {
            PayScale oPayScale = new PayScale();
            #region Cache Header
            oPayScale = _cache["GetByGrade", nGradeID] as PayScale;
            if (oPayScale != null)
                return oPayScale;
            #endregion
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(PayScaleDA.GetByGrade(tc, nGradeID));
                if (oreader.Read())
                {
                    oPayScale = this.CreateObject<PayScale>(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(oPayScale, "GetByGrade", nGradeID);
            #endregion
            return oPayScale;
        }

        public DateTime? GetMaxEffectDate(ID PayrollTypeID)
        {
            TransactionContext tc = null;
            DateTime ?dMaxEffectDate = DateTime.MinValue;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(PayScaleDA.GetMaxEffectDate(tc,PayrollTypeID));
                if (oreader.Read())
                {
                    dMaxEffectDate = oreader.GetDateTime(0);
                }
                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
            }
            return dMaxEffectDate;
        }

        public ObjectsTemplate<PayScale> GetByAllowance(ID nAllowID)
        {
            #region Cache Header

            ObjectsTemplate<PayScale> payScales = _cache["GetByAllowance", nAllowID] as ObjectsTemplate<PayScale>;
            if (payScales != null)
                return payScales;

            #endregion

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();

                DataReader dr = new DataReader(PayScaleDA.GetByAllowance(tc,nAllowID));
                payScales = this.CreateObjects<PayScale>(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(payScales, "GetByAllowance", nAllowID);

            #endregion

            return payScales;
        }
        public ObjectsTemplate<PayScale> Get()
        {
            #region Cache Header

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

            #endregion

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();

                DataReader dr = new DataReader(PayScaleDA.Get(tc));
                payScales = this.CreateObjects<PayScale>(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(payScales, "Get");

            #endregion

            return payScales;
        }
        public ObjectsTemplate<PayScale> GetLatest(ID PayrollTypeID)
        {
            #region Cache Header

            ObjectsTemplate<PayScale> payScales = _cache["GetLatest"] as ObjectsTemplate<PayScale>;
            if (payScales != null)
                return payScales;

            #endregion

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();

                DataReader dr = new DataReader(PayScaleDA.GetLatest(tc, PayrollTypeID));
                payScales = this.CreateObjects<PayScale>(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(payScales, "GetLatest");

            #endregion

            return payScales;
        }
        
        public ID Save(PayScale oPayScale)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                if (oPayScale.IsNew)
                {
                    int id = tc.GenerateID("PayScale", "PAYSCALEID");
                    base.SetObjectID(oPayScale, ID.FromInteger(id));
                    PayScaleDA.Insert(tc, oPayScale);
                }
                else
                {
                    PayScaleDA.Update(tc, oPayScale);
                    PayScaleDetailDA.DeleteByPayScaleID(tc, oPayScale.ID);
                }
                foreach (PayScaleDetail detail in oPayScale.PayscaleDetails)
                {
                    detail.PayscaleID = oPayScale.ID;
                    int id = tc.GenerateID("PAYSCALEITEM", "PAYSCALEITEMID");
                    base.SetObjectID(detail, ID.FromInteger(id));
                    detail.GradeID = oPayScale.GradeID;
                    detail.AllowanceID =ID.FromInteger(oPayScale.ItemID);
                    PayScaleDetailDA.Insert(tc, detail);
                }
                tc.End();
                return oPayScale.ID;
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
        }

        public ID Save(TransactionContext tc,PayScale oPayScale)
        {
            try
            {
                if (oPayScale.IsNew)
                {
                    int id = tc.GenerateID("PayScale", "PAYSCALEID");
                    base.SetObjectID(oPayScale, ID.FromInteger(id));
                    PayScaleDA.Insert(tc, oPayScale);
                }
                else
                {
                    PayScaleDA.Update(tc, oPayScale);
                    PayScaleDetailDA.DeleteByPayScaleID(tc, oPayScale.ID);
                }
                foreach (PayScaleDetail detail in oPayScale.PayscaleDetails)
                {
                    detail.PayscaleID = oPayScale.ID;
                    int id = tc.GenerateID("PAYSCALEITEM", "PAYSCALEITEMID");
                    base.SetObjectID(detail, ID.FromInteger(id));
                    detail.GradeID = oPayScale.GradeID;
                    detail.AllowanceID = ID.FromInteger(oPayScale.ItemID);
                    PayScaleDetailDA.Insert(tc, detail);
                }
                return oPayScale.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
            {
                tc = TransactionContext.Begin(true);
                PayScaleDA.Delete(tc, id);
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
        }

        public void Save(ObjectsTemplate<PayScale> newPayscale)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);

                foreach (PayScale scale in newPayscale)
                {
                    this.Save(tc,scale);
                }

                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);
                #endregion
            }
        }

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