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

namespace HRM.DA
{
    public class SurveyService : ServiceTemplate, ISurveyService
    {
        public SurveyService()
        {
        }

        private void MapObject(Survey oSurvey, DataReader oReader)
        {
            base.SetObjectID(oSurvey, (oReader.GetInt32("SurveyID").Value));
            oSurvey.Title = oReader.GetString("Title");
            oSurvey.CategoryID = oReader.GetInt32("CategoryID").GetValueOrDefault();
            oSurvey.Description = oReader.GetString("Description");
            oSurvey.FromDate = oReader.GetDateTime("FromDate").GetValueOrDefault();
            oSurvey.ToDate = oReader.GetDateTime("ToDate").GetValueOrDefault();
            oSurvey.PublishDate = oReader.GetDateTime("PUBLISHDATE").GetValueOrDefault();
            oSurvey.IsForCelyStoped = oReader.GetBoolean("IsForCelyStoped").GetValueOrDefault();
            oSurvey.IsPublished = oReader.GetBoolean("IsPublished").GetValueOrDefault();
            oSurvey.SurveyType = (EnumSurveyType)oReader.GetInt32("SurveyType").Value;
            oSurvey.CreatedBy = oReader.GetInt32("CreatedBy", 0);
            oSurvey.CreatedDate = oReader.GetDateTime("CreationDate").Value;
            oSurvey.ModifiedBy = oReader.GetInt32("ModifiedBy", 0);
            oSurvey.ModifiedDate = oReader.GetDateTime("ModifiedDate");
            oSurvey.CategoryName = oReader.GetString("SurveyCategory", true,null);
            oSurvey.EstimatedTime = oReader.GetDouble("EstimatedTime", true, 0);
            oSurvey.ActualTime = oReader.GetDouble("ActualTime", true, 0);
            oSurvey.PassMark = oReader.GetInt32("PassMark", true, 0);
            this.SetObjectState(oSurvey, Ease.Core.ObjectState.Saved);
        }

        protected override T CreateObject<T>(DataReader oReader)
        {
            Survey oSurvey = new Survey();
            MapObject(oSurvey, oReader);
            return oSurvey as T;
        }

        protected Survey CreateObject(DataReader oReader)
        {
            Survey oSurvey = new Survey();
            MapObject(oSurvey, oReader);
            return oSurvey;
        }

        #region Service implementation

        public Survey Get(int id)
        {
            Survey oSurvey = null;
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(SurveyDA.Get(tc, id));
                if (oreader.Read())
                {
                    oSurvey = this.CreateObject<Survey>(oreader);
                }

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

                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException("Failed to Get Survey", e);

                #endregion
            }

            return oSurvey;
        }

        public List<Survey> Get()
        {
            List<Survey> oSurveys = null;

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(SurveyDA.Get(tc));
                oSurveys = this.CreateObjects<Survey>(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
            }

            return oSurveys;
        }

        public List<Survey> GetWithCategoryID(int categoryId)
        {
            List<Survey> oSurveys = null;

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(SurveyDA.GetByCategory(tc, categoryId));
                oSurveys = this.CreateObjects<Survey>(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
            }

            return oSurveys;
        }

        public List<Survey> Get(DateTime today)
        {
            List<Survey> oSurveys = null;

            TransactionContext tc = null;
            try
            {
                #region Retrieving data

                tc = TransactionContext.Begin();

                DataReader oreader = new DataReader(SurveyDA.Get(tc, today));
                oSurveys = CreateObjects<Survey>(oreader);

                tc.End();

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

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

                throw new ServiceException(e.Message, e);

                #endregion
            }


            return oSurveys;
        }

        //public List<Survey> Get(Employee oEmp)
        //{
        //    List<Survey> oSurveys;

        //    #region CacheHeader
        //    oSurveys = (List<Survey>)_cache["Get"];
        //    if (oSurveys != null)
        //        return oSurveys;
        //    #endregion

        //    TransactionContext tc = null;
        //    try
        //    {
        //        #region Retrieving data


        //        tc = TransactionContext.Begin();

        //        DataReader oreader = new DataReader(SurveyDA.Get(tc, oEmp));
        //        oSurveys = CreateObjects<Survey>(oreader);

        //        tc.End();

        //        #endregion
        //    }
        //    catch (Exception e)
        //    {
        //        #region Handle Exception
        //        if (tc != null)
        //            tc.HandleError();

        //        throw new ServiceException(e.Message, e);
        //        #endregion
        //    }

        //    #region CacheFooter
        //    _cache.Add(oSurveys, "Get");
        //    #endregion

        //    return oSurveys;
        //}

        public List<Survey> Get(int categoryId, DateTime fromDT, DateTime toDT)
        {
            List<Survey> oSurveys = null;
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(SurveyDA.GetByCategory(tc, categoryId, fromDT, toDT));
                oSurveys = this.CreateObjects<Survey>(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
            }

            return oSurveys;
        }

        public List<Survey> Get(DateTime fromDT, DateTime toDT)
        {
            List<Survey> oSurveys = null;
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(SurveyDA.GetByCategory(tc, fromDT, toDT));
                oSurveys = this.CreateObjects<Survey>(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
            }

            return oSurveys;
        }

        public List<Survey> GetQuestionSetByCategoryID(int categoryID)
        {
            List<Survey> oSurveys = null;
            List<SurveyQuestion> oSurveyQuestions = new List<SurveyQuestion>();
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(SurveyDA.GetQuestionsByCategoryId(tc, categoryID));
                oSurveys = this.CreateObjects<Survey>(dr);
                dr.Close();

                if(oSurveys != null && oSurveys.Count > 0)
                {
                    string ids = String.Join(",", oSurveys.Select(x => x.ID).Distinct());
                    oSurveyQuestions = new SurveyQuestionService().GetSurveyQuestions(tc, ids);

                }
                tc.End();
                if(oSurveyQuestions != null && oSurveyQuestions.Count > 0)
                {
                    foreach(var temp in oSurveys)
                    {
                        var noOfQuestionCount= temp.SurveyQuestions = oSurveyQuestions.Where(x => x.SurveyID == temp.ID).ToList();
                        temp.NoOfQuestions = noOfQuestionCount.Count();
                    }
                }
            }
            catch (Exception e)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);

                #endregion
            }

            return oSurveys;
        }

        public List<Survey> GetIncompleteSurveys(int employeeID, EnumSurveyType surveyType, DateTime fromDT,
            DateTime toDT)
        {
            List<Survey> oSurveys = null;
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(SurveyDA.GetIncompleteSurveys(tc, employeeID, surveyType, fromDT, toDT));
                oSurveys = this.CreateObjects<Survey>(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
            }

            return oSurveys;
        }


        public int Save(Survey oSurvey)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                if (oSurvey.IsNew)
                {
                    int id = tc.GenerateID("Survey", "SurveyID");
                    base.SetObjectID(oSurvey, (id));


                    SurveyDA.Insert(tc, oSurvey);
                }
                else
                {
                    SurveyDA.Update(tc, oSurvey);
                }

                SurveyQuestionDA.DeleteSurveyQuestion(tc, oSurvey.ID);
                SurveyEmployeeDA.DeleteSurveyEmployee(tc, oSurvey.ID);
                SurveyOrganizationDA.DeleteSurveyOrganization(tc, oSurvey.ID);
                SurveyWeightDefinitionDA.DeleteSurveyWeightDefinition(tc, oSurvey.ID);
                //SurveyResultDA.DeleteSurveyResult(tc, oSurvey.ID,oSurvey.SurveyEmployees[0].EmployeeID,oSurvey.SurveyQuestions[0].ID);
                foreach (SurveyQuestion sques in oSurvey.SurveyQuestions)
                {
                    sques.SurveyID = oSurvey.ID;
                    SurveyQuestionDA.Insert(tc, sques);
                }
                if(oSurvey.SurveyEmployees != null)
                {
                    foreach (SurveyEmployee semp in oSurvey.SurveyEmployees)
                    {
                        semp.SurveyID = oSurvey.ID;
                        SurveyEmployeeDA.Insert(tc, semp);
                    }
                }

                if (oSurvey.SurveyOrganizations != null)
                {
                    foreach (SurveyOrganization sorg in oSurvey.SurveyOrganizations)
                    {
                        sorg.SurveyID = oSurvey.ID;
                        SurveyOrganizationDA.Insert(tc, sorg);
                    }
                }

                if (oSurvey.SurveyOrganizations != null)
                {
                    foreach (SurveyWeightDefinition swd in oSurvey.SurveyWeightDefinitions)
                    {
                        swd.SurveyID = oSurvey.ID;
                        SurveyWeightDefinitionDA.Insert(tc, swd);
                    }
                }
               

                //foreach (SurveyResult sreslt in oSurvey.SurveyResults)
                //{
                //    sreslt.SurveyID = oSurvey.ID;
                //    SurveyResultDA.Insert(tc, sreslt);
                //}
                tc.End();
                return oSurvey.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(int id)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                SurveyDA.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 Publish(Survey survey)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                SurveyDA.Publish(tc, survey);
                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 Stop(Survey survey)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                SurveyDA.Stop(tc, survey);
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                throw new ServiceException(e.Message, e);

                #endregion
            }
        }

        #endregion
    }
}