using System;
using System.Data;
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 Payroll.BO;

namespace HRM.DA
{
    public class QuestionService : ServiceTemplate, IQuestionService
    {
        public QuestionService()
        {
        }

        private void MapObject(Question oQuestion, DataReader oReader)
        {
            base.SetObjectID(oQuestion, (oReader.GetInt32("QuestionID").Value));
            //oQuestion.QuestionID = oReader.GetID("QuestionID");
            oQuestion.QuestionNo = oReader.GetString("QuestionNo");
            oQuestion.CategoryID = oReader.GetInt32("CategoryID").GetValueOrDefault();
            oQuestion.QuestionBody = oReader.GetString("QuestionBody");
            oQuestion.Image = oReader.GetString("Image");
            oQuestion.IsMultiple = oReader.GetBoolean("IsMultiple").GetValueOrDefault();
            oQuestion.IsPublished = oReader.GetBoolean("IsPublished").GetValueOrDefault();
            oQuestion.CreationDate = oReader.GetDateTime("CreationDate").Value;
            oQuestion.UserID = oReader.GetInt32("UserID").GetValueOrDefault();
            oQuestion.QuestionType = (EnumSurveyQuestionType)oReader.GetInt32("QuestionType").Value;
            oQuestion.CreatedBy = oReader.GetInt32("CreatedBy", 0);
            oQuestion.ModifiedBy = oReader.GetInt32("ModifiedBy", 0);
            ;
            oQuestion.EstimatedTime = oReader.GetDouble("EstimatedTime").GetValueOrDefault();
            oQuestion.ModifiedDate = oReader.GetDateTime("ModifiedDate");
            this.SetObjectState(oQuestion, Ease.Core.ObjectState.Saved);
        }

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

        protected Question CreateObject(DataReader oReader)
        {
            Question oQuestion = new Question();
            MapObject(oQuestion, oReader);
            return oQuestion;
        }

        #region Service implementation

        public Question Get(int id)
        {
            Question oQuestion = null;
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(QuestionDA.Get(tc, id));
                if (oreader.Read())
                {
                    oQuestion = this.CreateObject<Question>(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 Question", e);

                #endregion
            }

            return oQuestion;
        }

        public List<Question> Get()
        {
            List<Question> oQuestions = null;

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(QuestionDA.Get(tc));
                oQuestions = this.CreateObjects<Question>(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 oQuestions;
        }

        public List<Question> GetByCategory(int categoryID)
        {
            List<Question> oQuestions = null;
            List<QuestionCategory> oQuestionCategoryList = new List<QuestionCategory>();
            oQuestionCategoryList= new QuestionCategoryService().Get(EnumStatus.Active);

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(QuestionDA.GetByCategory(tc, categoryID));
                oQuestions = this.CreateObjects<Question>(dr);
                dr.Close();
                tc.End();

                foreach(var item in oQuestions)
                {
                    item.QuestionAnswers = new QuestionAnswerService().GetByQuestionID(item.ID);
                    item.NoOfOptions = item.QuestionAnswers.Count;
                    item.CategoryString = oQuestionCategoryList?.Find(x=>x.ID==item.CategoryID)?.Description;
                }
            }
            catch (Exception e)
            {
                #region Handle Exception

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

                #endregion
            }

            return oQuestions;
        }

        public Question GetWithChild(int id)
        {
            Question oQuestion = null;
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(QuestionDA.Get(tc, id));
                if (oreader.Read())
                {
                    oQuestion = this.CreateObject<Question>(oreader);
                }

                oreader.Close();
                tc.End();

                if(oQuestion != null)
                {
                    oQuestion.QuestionAnswers = new QuestionAnswerService().GetByQuestionID(oQuestion.ID);
                }
            }
            catch (Exception e)
            {
                #region Handle Exception

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

                #endregion
            }

            return oQuestion;
        }

        public QuestionAnswerAttachment GetAnswerByAttchmentId(int questionId,int answerId)
        {
            QuestionAnswerAttachment oFileAttachment = null;
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader oreader = new DataReader(QuestionAnswerAttachmentDA.GetAnswerAttachment(tc, questionId, answerId));
                while (oreader.Read())
                {
                    oFileAttachment = new QuestionAnswerAttachment();
                    oFileAttachment.ID = oreader.GetInt32("QUESTIONANSWERATTACHMENTID").Value;
                    oFileAttachment.QuestionID = oreader.GetInt32("QuestionID", 0);
                    oFileAttachment.FileAsByteArray = oreader.GetLob("FileData");
                    oFileAttachment.OriginalFileName = oreader.GetString("OriginalFileName");
                    oFileAttachment.AnswerID = oreader.GetInt32("AnswerID", 0);
                    oFileAttachment.AttachmentType = (EnumQuestionAnswerFileType)oreader.GetInt32("AttachmentType").GetValueOrDefault();
                }
                oreader.Close();
            }
            catch (Exception ex)
            {
                #region Handle Exception

                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(ex);
                throw new ServiceException("Failed to Get IRNotifications: " + ex.Message, ex);

                #endregion
            }

            return oFileAttachment;
        }

        public bool IsTagged(int id)
        {
            bool retVal = false;
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                retVal = QuestionDA.IsTagged(tc, id);
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception

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

                #endregion
            }

            return retVal;
        }

        public int Save(Question oQuestion)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                int codeLength = 3;
                if (oQuestion.IsNew)
                {
                    int id = tc.GenerateID("Question", "QuestionID");
                    base.SetObjectID(oQuestion, (id));
                    QuestionDA.Insert(tc, oQuestion);
                }
                else
                {
                    QuestionDA.Update(tc, oQuestion);
                }

                #region Saving answers

                QuestionAnswerDA.DeleteByQuestionId(tc, oQuestion.ID);
                foreach (QuestionAnswer ans in oQuestion.QuestionAnswers)
                {
                    int id = tc.GenerateID("QuestionAnswer", "AnswerID");
                    base.SetObjectID(ans, (id));
                    ans.QuestionID = oQuestion.ID;
                    ans.ID = id;
                    QuestionAnswerDA.Insert(tc, ans);
                }

                #endregion

                tc.End();
                foreach (var item in oQuestion.QuestionAnswerAttachments)
                {
                    if (item.ID <= 0 && item.PreviousFileTobase64 != null)
                    {
                        string[] items = item.PreviousFileTobase64.Split(new char[] { ',', ' ' }, StringSplitOptions.None);
                        byte[] newBytes = Convert.FromBase64String(items[1]);
                        item.FileAsByteArray = newBytes;
                    }
                    item.QuestionID = oQuestion.ID;
                    item.AnswerID = 0;
                    item.AttachmentType = EnumQuestionAnswerFileType.Question;
                    QuestionAnswerAttachmentDA.Insert(item, oQuestion.ConnectionString);
                }
                foreach (QuestionAnswer ans in oQuestion.QuestionAnswers)
                {
                    foreach (var item in ans.QuestionAnswerAttachments)
                    {
                        if (item.ID <= 0 && item.PreviousFileTobase64 != null)
                        {
                            string[] items = item.PreviousFileTobase64.Split(new char[] { ',', ' ' }, StringSplitOptions.None);
                            byte[] newBytes = Convert.FromBase64String(items[1]);
                            item.FileAsByteArray = newBytes;
                        }
                        item.QuestionID = oQuestion.ID;
                        item.AnswerID = ans.ID;
                        item.AttachmentType = EnumQuestionAnswerFileType.Answer;
                        QuestionAnswerAttachmentDA.Insert(item, oQuestion.ConnectionString);
                    }
                }

                return oQuestion.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);
                QuestionAnswerDA.DeleteByQuestionId(tc, id);
                QuestionDA.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
    }
}