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

        #endregion
        public FunctionService() { }

        private void MapObject(Function oFunction, DataReader oReader)
        {
            base.SetObjectID(oFunction, oReader.GetID("FunctionID"));
            oFunction.Code = oReader.GetString("code");
            oFunction.Name = oReader.GetString("description");
            oFunction.Sequence = oReader.GetInt32("SequenceNo").Value;
            oFunction.Status = (EnumStatus)oReader.GetInt32("Status").Value;
            oFunction.CreatedBy = oReader.GetID("CreatedBy");
            oFunction.CreatedDate = oReader.GetDateTime("CreatedDate").Value ;
            oFunction.ModifiedBy = oReader.GetID("ModifiedBy");
            oFunction.ModifiedDate = oReader.GetDateTime("ModifiedDate");
            this.SetObjectState(oFunction, Ease.CoreV35.ObjectState.Saved);
        }
        protected override T CreateObject<T>(DataReader oReader)
        {
            Function oFunction = new Function();
            MapObject(oFunction, oReader);
            return oFunction as T;
        }
        protected Function CreateObject(DataReader oReader)
        {
            Function oFunction = new Function();
            MapObject(oFunction, oReader);
            return oFunction;
        }
        #region Service implementation
        public Function Get(ID id)
        {
            Function oFunction = new Function();
            #region Cache Header
            oFunction = _cache["Get", id] as Function;
            if (oFunction != null)
                return oFunction;
            #endregion
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(FunctionDA.Get(tc, id));
                if (oreader.Read())
                {
                    oFunction = this.CreateObject<Function>(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(oFunction, "Get", id);
            #endregion
            return oFunction;
        }
        public Function Get(string code)
        {
            Function oFunction = new Function();
            #region Cache Header
            oFunction = _cache["Get", code] as Function;
            if (oFunction != null)
                return oFunction;
            #endregion
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(FunctionDA.Get(tc, code));
                if (oreader.Read())
                {
                    oFunction = this.CreateObject<Function>(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(oFunction, "Get", code);
            #endregion
            return oFunction;
        }
        public ObjectsTemplate<Function> Get(EnumStatus status)
        {
            #region Cache Header

            ObjectsTemplate<Function> Functions = _cache["Get", status] as ObjectsTemplate<Function>;
            if (Functions != null)
                return Functions;

            #endregion

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

                DataReader dr = new DataReader(FunctionDA.Get(tc, status));
                Functions = this.CreateObjects<Function>(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(Functions, "Get", status);

            #endregion

            return Functions;
        }
        public ID Save(Function oFunction)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                if (oFunction.IsNew)
                {

                    int id = tc.GenerateID("[Function]", "FunctionID");
                    base.SetObjectID(oFunction , ID.FromInteger(id));
                    int seqNo = tc.GenerateID("[Function]", "SequenceNo");
                    oFunction.Sequence = seqNo;
                    FunctionDA.Insert(tc, oFunction);
                }
                else
                {
                    FunctionDA.Update(tc, oFunction);
                }
                tc.End();
                return oFunction.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);
                FunctionDA.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
            }
        }
        #endregion
    }
    #endregion
}