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 Configaration Service
    [Serializable]
    public class ConfigarationService : ServiceTemplate, IConfigarationService
    {
        private static Cache _cache = new Cache(typeof(ConfigarationService));

        private void MapChildObject(Configaration.ConfigurationAttribute ca, DataReader dr)
        {
            ca.ConfigurationID  = dr.GetID("ParentID");
            ca.AttributeName = dr.GetString("AttributeName");
            ca.Value = dr.GetString("Value");
            base.SetObjectID(ca, dr.GetID("AttributeID"));
            base.SetObjectState(ca, ObjectState.Saved);
        }
        private Configaration.ConfigurationAttribute CreateChildObject(DataReader dr)
        {
            Configaration.ConfigurationAttribute ca = new Configaration.ConfigurationAttribute();
            MapChildObject(ca, dr);
            return ca;
        }
        private void FillChildren(Configaration parent, DataReader dr)
        {
            while (dr.Read())
            {
                Configaration.ConfigurationAttribute item = this.CreateChildObject(dr);
                parent.ConAttributes.Add(item);
            }
        }

        private void MapObject(Configaration configuration, DataReader dr)
        {
            base.SetObjectID(configuration, dr.GetID("ConfigurationId"));
            configuration.Node = dr.GetString("Node");
            configuration.Value = dr.GetString("Value");
            configuration.Type = (EnumConfigurationType)dr.GetInt16("Type").Value;
            configuration.CreatedBy = dr.GetID("CreatedBy");
            configuration.CreatedDate = dr.GetDateTime("CreatedDate").Value;
            configuration.ModifiedBy = dr.GetID("ModifiedBy");
            configuration.ModifiedDate = dr.GetDateTime("ModifiedDate");
            configuration.ParentID  = dr.GetID("ParentID");
            base.SetObjectState(configuration, ObjectState.Saved);
        }
        protected override T CreateObject<T>(DataReader dr)
        {
            Configaration configuration = new Configaration();

            MapObject(configuration, dr);

            return configuration as T;
        }

        public void Save(ObjectsTemplate<Configaration> configurations, EnumConfigurationType type)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);

                //Delete All Configuration and its Attributes                
                ConfigarationDA.DeleteAll(tc, type);

                int Id = tc.GenerateID("Configuration", "ConfigurationID");
                Id = Id + 2000;
                foreach (Configaration config in configurations)
                {
                    
                    this.UpdateParent(config.ID, ID.FromInteger(Id), configurations);
                    config.SetObjectID(ID.FromInteger(Id));
                    Id = Id + 1;
                }                
                foreach (Configaration config in configurations)
                {
                    //Save Configuration
                    config.Type = type;
                    ConfigarationDA.Insert(tc, config);

                    //Save Children
                    foreach (var item in config.ConAttributes)
                    {
                        item.ConfigurationID = config.ID;
                        int id = tc.GenerateID("ConfigurationAttribute", "AttributeID");
                        item.SetID(ID.FromInteger(id));
                        ConfigarationDA.Insert(tc, item);                        
                    }
                }

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

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

                ExceptionLog.Write(e);
                
                throw new ServiceException(e.Message, e);
                #endregion
            }
        }
        private void UpdateParent(ID oldId, ID currentID, ObjectsTemplate<Configaration> configurations)
        {
            foreach (Configaration config in configurations)
            {
                if (config.ParentID == oldId)
                {
                    config.ParentID = currentID;
                }
            }
        }

        public void Delete(ID id)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);

                ConfigarationDA.Delete(tc, id);

                tc.End();

                //CacheInfo.ClearCache(typeof(CountryService).FullName);
            }
            catch (Exception e)
            {
                #region Handle Exception

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

                throw new ServiceException(e.Message, e);

                #endregion
            }
        }

        public Configaration Get(ID id)
        {
            #region Cache Header

            Configaration configuration = _cache["Get", id] as Configaration;

            if (configuration != null)
                return configuration;

            #endregion

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

                DataReader dr = new DataReader(ConfigarationDA.Get(tc, id));
                configuration = this.loadItem(dr);
                dr.Close();

                if (configuration != null && configuration.ID != null && configuration.ID.Integer != 0)
                {
                    dr = new DataReader(ConfigarationDA.GetChildren(tc, id));
                    FillChildren(configuration, 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(configuration, "Get", id);

            #endregion

            return configuration;
        }

        Configaration loadItem(DataReader dr)
        {
            Configaration configuration = null;
            try
            {
                if (dr.Read())
                    configuration = this.CreateObject<Configaration>(dr);
            }
            catch (Exception e)
            {
                #region Handle Exception

                throw new ServiceException(e.Message, e);

                #endregion
            }

            return configuration;
        }
        public ObjectsTemplate<Configaration> GetAllParent()
        {
            #region Cache Header

            ObjectsTemplate<Configaration> configurations = _cache["GetAllParent"] as ObjectsTemplate<Configaration>;
            if (configurations != null)
                return configurations;

            #endregion

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

                DataReader dr = new DataReader(ConfigarationDA.GetAllParent(tc));
                configurations = this.CreateObjects<Configaration>(dr);
                dr.Close();
            }
            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(configurations, "GetAllParent");

            #endregion

            return configurations;
        }
        public ObjectsTemplate<Configaration> GetAllParent(EnumConfigurationType type)
        {
            #region Cache Header

            ObjectsTemplate<Configaration> configurations = _cache["GetAllParent"] as ObjectsTemplate<Configaration>;
            if (configurations != null)
                return configurations;

            #endregion

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

                DataReader dr = new DataReader(ConfigarationDA.GetAllParent(tc, type));
                configurations = this.CreateObjects<Configaration>(dr);
                dr.Close();
            }
            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(configurations, "GetAllParent");

            #endregion

            return configurations;
        }
        public ObjectsTemplate<Configaration.ConfigurationAttribute> GetAllChildrens()
        {
            Configaration.ConfigurationAttributes items = new Configaration.ConfigurationAttributes();
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();

                DataReader dr = new DataReader(ConfigarationDA.GetAllChildrens(tc));
                while (dr.Read())
                {
                    Configaration.ConfigurationAttribute ca = new Configaration.ConfigurationAttribute();
                    MapChildObject(ca, dr);
                    items.Add(ca);
                }
                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
            }


            return items;
        }
        public ObjectsTemplate<Configaration> Get(EnumConfigurationType configType)
        {
            #region Cache Header

            ObjectsTemplate<Configaration> configurations = _cache["Get", configType] as ObjectsTemplate<Configaration>;
            if (configurations != null)
                return configurations;

            #endregion

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

                DataReader dr = new DataReader(ConfigarationDA.Get(tc, configType));
                configurations = this.CreateObjects<Configaration>(dr);
                dr.Close();

                foreach (Configaration item in configurations)
                {
                    dr = new DataReader(ConfigarationDA.GetChildren(tc, item.ID));
                    FillChildren(item, 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(configurations, "Get", configType);

            #endregion

            return configurations;
        }

        public ObjectsTemplate<Configaration.ConfigurationAttribute> GetAttributesByParentID(int nParentID)
        {
            Configaration.ConfigurationAttributes items = new Configaration.ConfigurationAttributes();
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();

                DataReader dr = new DataReader(ConfigarationDA.GetChildrenByNode(tc, nParentID));
                while (dr.Read())
                {
                    Configaration.ConfigurationAttribute ca = new Configaration.ConfigurationAttribute();
                    MapChildObject(ca, dr);
                    items.Add(ca);
                }
                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
            }


            return items;
        }
        public ObjectsTemplate<Configaration.ConfigurationAttribute> GetAttributesByValue(string sMenuKey)
        {
            Configaration.ConfigurationAttributes items = new Configaration.ConfigurationAttributes();
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();

                DataReader dr = new DataReader(ConfigarationDA.GetChildrenByValue(tc, sMenuKey));
                while (dr.Read())
                {
                    Configaration.ConfigurationAttribute ca = new Configaration.ConfigurationAttribute();
                    MapChildObject(ca, dr);
                    items.Add(ca);
                }
                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
            }


            return items;
        }

        public ObjectsTemplate<Configaration.ConfigurationAttribute> GetAllChildren()
        {
            Configaration.ConfigurationAttributes items = new Configaration.ConfigurationAttributes();
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();

                DataReader dr = new DataReader(ConfigarationDA.GetAllChildren(tc));
                while (dr.Read())
                {
                    Configaration.ConfigurationAttribute ca = new Configaration.ConfigurationAttribute();
                    MapChildObject(ca, dr);
                    items.Add(ca);
                }
                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
            }


            return items;
        }
    }
    #endregion
}