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

namespace HRM.DA
{
    public class LeaveExceptionService : ServiceTemplate, ILeaveExceptionService
    {
        #region Private functions and declaration

        public LeaveExceptionService()
        {
        }

        private void MapObject(LeaveException oLeaveException, DataReader oReader)
        {
            //base.SetObjectID(oLeaveException, oReader.GetInt32("LeaveExceptionID").Value);
            oLeaveException.EmployeeID = oReader.GetInt32("EmployeeID").Value;
            oLeaveException.StartDate = oReader.GetDateTime("StartDate").Value;
            oLeaveException.EndDate = oReader.GetDateTime("EndDate").Value;
            oLeaveException.LeaveID = oReader.GetInt16("LeaveID").Value;
            oLeaveException.OpeningBalance = oReader.GetDouble("OpeningBalance").Value;
            oLeaveException.MaxDays = oReader.GetDouble("MaxDays").Value;
            oLeaveException.CFDays = oReader.GetDouble("CFDays").Value;
            this.SetObjectState(oLeaveException, Ease.Core.ObjectState.Saved);
        }

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

        private LeaveException CreateObject(DataReader oReader)
        {
            LeaveException oLeave = new LeaveException();
            MapObject(oLeave, oReader);
            return oLeave;
        }

        #endregion


        public List<LeaveException> Get()
        {
            List<Employee> employees = new List<Employee>();
            employees = new EmployeeService().GetAllEmps();
            List<Leave> leaves = new LeaveService().GetAll();
            List<LeaveException> oLeaveExceptions = new List<LeaveException>();
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(LeaveExceptionDA.Get(tc));
                oLeaveExceptions = this.CreateObjects<LeaveException>(dr);
                dr.Close();
                tc.End();

                foreach (LeaveException item in oLeaveExceptions)
                {
                    Employee employee = employees.Find(x => x.ID == item.EmployeeID);
                    item.EmployeeNo = employee != null ? employee.EmployeeNo : string.Empty;
                    item.EmployeeName = employee != null ? employee.Name : string.Empty;

                    Leave leave = leaves.Find(x => x.ID == item.LeaveID);
                    item.LeaveName = leave != null ? leave.Description : string.Empty;
                }
            }
            catch (Exception e)
            {
                #region Handle Exception

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

                #endregion
            }

            return oLeaveExceptions;
        }

        public List<LeaveException> Get(DateTime dFrom, DateTime dTo)
        {
            List<LeaveException> oLeaves = new List<LeaveException>();
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(LeaveExceptionDA.Get2(tc, dFrom, dTo));
                oLeaves = this.CreateObjects<LeaveException>(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 oLeaves;
        }

        public List<LeaveException> GetByEmpID(int nLeaveID, int nEmpID)
        {
            List<Employee> employees = new List<Employee>();
            employees = new EmployeeService().GetAllEmps();
            List<Leave> leaves = new LeaveService().GetAll();
            List<LeaveException> oLeaveExceptions = new List<LeaveException>();

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                DataReader dr = new DataReader(LeaveExceptionDA.GetByEmpID(tc, nLeaveID, nEmpID));
                oLeaveExceptions = this.CreateObjects<LeaveException>(dr);
                dr.Close();
                tc.End();
                foreach (LeaveException item in oLeaveExceptions)
                {
                    Employee employee = employees.Find(x => x.ID == item.EmployeeID);
                    item.EmployeeNo = employee != null ? employee.EmployeeNo : string.Empty;
                    item.EmployeeName = employee != null ? employee.Name : string.Empty;

                    Leave leave = leaves.Find(x => x.ID == item.LeaveID);
                    item.LeaveName = leave != null ? leave.Description : string.Empty;
                }
            }
            catch (Exception e)
            {
                #region Handle Exception

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

                #endregion
            }

            return oLeaveExceptions;
        }

        public int Save(LeaveException oLeave)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                LeaveExceptionDA.Delete(tc, oLeave.EmployeeID);
                LeaveExceptionDA.Insert(tc, oLeave);

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

                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);
                //throw new ServiceException("Failed to Get Leave", e);
                throw new Exception("Failed to Insert Leave. Because " + e.Message, e);

                #endregion
            }
        }

        public void DeleteItem(int nID)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                LeaveExceptionDA.DeleteItem(tc, nID);
                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 DeleteByEmpID(int empID)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin(true);
                LeaveExceptionDA.Delete(tc, empID);
                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception

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

                #endregion
            }
        }
    }
}