using System;
using Ease.Core.Model;
using Ease.Core.DataAccess;
using Ease.Core.Utility;
using System.Collections.Generic;
using HRM.BO;
using System.Data;

namespace HRM.DA
{
    public class GroupService : ServiceTemplate
    {
        #region Constructor

        public GroupService()
        {
        }

        #endregion

        private void MapObject(Grouping oGrouping, DataReader dr)
        {
            base.SetObjectID(oGrouping, dr.GetInt32("GroupingId").Value);
            oGrouping.Name = dr.GetString("Name");
            oGrouping.Description = dr.GetString("Description");
            oGrouping.ObjectGroupingID = dr.GetInt32("LeaveYear", 0);

            this.SetObjectState(oGrouping, Ease.Core.ObjectState.Saved);
        }

        protected override T CreateObject<T>(DataReader dr)
        {
            Grouping oGrouping = new Grouping();
            MapObject(oGrouping, dr);
            return oGrouping as T;
        }

        #region Service Implementation

        public void Save(Grouping group)
        {
            try
            {
                TransactionContext tc = null;
                try
                {
                    #region Saving data

                    tc = TransactionContext.Begin(true);

                    if (group.IsNew)
                    {
                        int newID = GroupDA.GenID(tc);
                        base.SetObjectID(group, newID);
                        GroupDA.Insert(tc, group);
                    }
                    else
                        GroupDA.Update(tc, group);

                    tc.End();

                    #endregion
                }
                catch (Exception e)
                {
                    #region Handle Exception

                    if (tc != null)
                        tc.HandleError();

                    throw new ServiceException(e.Message, e);

                    #endregion
                }
            }
            catch (Exception e)
            {
                throw new ServiceException(e.Message, e);
            }
        }

        public void Delete(int groupID)
        {
            {
                try
                {
                    TransactionContext tc = null;
                    try
                    {
                        #region Deleting data

                        tc = TransactionContext.Begin(true);

                        GroupDA.Delete(tc, groupID);

                        tc.End();

                        #endregion
                    }
                    catch (Exception e)
                    {
                        #region Handle Exception

                        if (tc != null)
                            tc.HandleError();

                        throw new ServiceException(e.Message, e);

                        #endregion
                    }
                }
                catch (Exception e)
                {
                    throw new ServiceException(e.Message, e);
                }
            }
        }

        public Grouping Get(int groupID)
        {
            Grouping group;

            TransactionContext tc = null;
            try
            {
                #region Retrieving data

                tc = TransactionContext.Begin();

                DataReader iReader = new DataReader(GroupDA.Get(tc, groupID));
                group = this.CreateObject<Grouping>(iReader);

                tc.End();

                #endregion
            }
            catch (Exception e)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();

                throw new ServiceException(e.Message, e);

                #endregion
            }

            return group;
        }

        public GroupingCollection Get()
        {
            GroupingCollection grps;

            TransactionContext tc = null;
            try
            {
                #region Retrieving data

                tc = TransactionContext.Begin();

                DataReader iReader = new DataReader(GroupDA.Get(tc));
                grps = this.CreateObject<GroupingCollection>(iReader);

                tc.End();

                #endregion
            }
            catch (Exception e)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();

                throw new ServiceException(e.Message, e);

                #endregion
            }

            return grps;
        }

        public GroupingCollection Get(bool isObjectGroup)
        {
            GroupingCollection grps;

            TransactionContext tc = null;
            try
            {
                #region Retrieving data

                tc = TransactionContext.Begin();

                DataReader iReader = new DataReader(GroupDA.Get(tc, isObjectGroup));
                grps = this.CreateObject<GroupingCollection>(iReader);

                tc.End();

                #endregion
            }
            catch (Exception e)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();

                throw new ServiceException(e.Message, e);

                #endregion
            }

            return grps;
        }

        public GroupingCollection GetByParent(int parentID, bool isObjectGroup)
        {
            GroupingCollection grps;

            TransactionContext tc = null;
            try
            {
                #region Retrieving data

                tc = TransactionContext.Begin();

                DataReader iReader = new DataReader(GroupDA.GetByParent(tc, parentID, isObjectGroup));
                grps = this.CreateObject<GroupingCollection>(iReader);

                tc.End();

                #endregion
            }
            catch (Exception e)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();

                throw new ServiceException(e.Message, e);

                #endregion
            }

            return grps;
        }

        #endregion
    }
}