using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GB5Shared.DTO.Framework.AutoNumber;
using GB5Shared.GB5Exception;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.Resource.Response;
using Newtonsoft.Json;
using PayRollDAL.DTO.PayPeriod;

namespace PayRollBLL.PayPeriod
{
    public  class PayPeriodBLL : IPayPeriodBLL
    {
        private readonly PayRollDAL.CustomeCode.PayPeriod.IPayPeriodDAL _payPeriodDAL;
        private readonly AutoNumber _autoNumber;

        public PayPeriodBLL(PayRollDAL.CustomeCode.PayPeriod.IPayPeriodDAL payPeriodDAL, AutoNumber autoNumber)
        {
            _payPeriodDAL = payPeriodDAL;
            _autoNumber = autoNumber;
        }
        public async Task<string> GetSelectListPayPeriodApplicableOu(int FirstNumber, int MaxResult, GB5Shared.DTO.Framework.Criteria.CriteriaDTO CriteriaDTO, GB5Shared.DTO.Framework.Login.LoginDTO LoginDTO)
        {
            try
            {
                return await _payPeriodDAL.GetSelectListPayPeriodApplicableOu(FirstNumber, MaxResult, CriteriaDTO, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
         }

        public async Task<string> GetSelectListPayPeriod(int FirstNumber, int MaxResult, GB5Shared.DTO.Framework.Criteria.CriteriaDTO CriteriaDTO, GB5Shared.DTO.Framework.Login.LoginDTO LoginDTO, bool IsCount)
        {
            try
            {
                return await _payPeriodDAL.GetSelectListPayPeriod(FirstNumber, MaxResult, CriteriaDTO, LoginDTO, IsCount);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> GetSelectListPayPeriodDescendingOrder(int FirstNumber, int MaxResult, GB5Shared.DTO.Framework.Criteria.CriteriaDTO CriteriaDTO, GB5Shared.DTO.Framework.Login.LoginDTO LoginDTO, bool IsCount = false)
        {
            try
            {
                return await _payPeriodDAL.GetSelectListPayPeriodDescendingOrder(FirstNumber, MaxResult, CriteriaDTO, LoginDTO, IsCount);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> GetSelectListPayPeriodApplicableOuDependMultiPayConfig(int FirstNumber, int MaxResult, GB5Shared.DTO.Framework.Criteria.CriteriaDTO CriteriaDTO, GB5Shared.DTO.Framework.Login.LoginDTO LoginDTO)
        {
            try
            {
                return await _payPeriodDAL.GetSelectListPayPeriodApplicableOuDependMultiPayConfig(FirstNumber, MaxResult, CriteriaDTO, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> GetPayPeriod(int PayPeriodId, GB5Shared.DTO.Framework.Login.LoginDTO LoginDTO)
        {
            try
            {
                PayPeriodDTO PayPeriodDTO = await _payPeriodDAL.GetPayPeriod(PayPeriodId, LoginDTO);
                return JsonConvert.SerializeObject(PayPeriodDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> Save(PayPeriodDTO PayPeriodDTO, GB5Shared.DTO.Framework.Login.LoginDTO LoginDTO)
        {
            try
            {
                if (PayPeriodDTO.PayPeriodId == 0)
                {
                    AutoNumberDTO autoNumberDTO = await _autoNumber.GetNumberAsync(1, "PAYPERIOD", LoginDTO);
                    PayPeriodDTO.PayPeriodId = autoNumberDTO.StartNumber;
                    PayPeriodDTO.PayPeriodCreatedById = LoginDTO.UserId;
                    PayPeriodDTO.PayPeriodCreatedOn = DateTime.UtcNow;
                    PayPeriodDTO.PayPeriodModifiedById = LoginDTO.UserId;
                    PayPeriodDTO.PayPeriodModifiedOn = DateTime.UtcNow;

                    await _payPeriodDAL.SavePayPeriod(PayPeriodDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {PayPeriodDTO.PayPeriodId}";
                }
                else
                {
                    bool payProcessed = await _payPeriodDAL.CheckPayProcessExistsForPayPeriod(PayPeriodDTO.PayPeriodId, LoginDTO);
                    if (payProcessed)
                    {
                        throw new MethodNotAllowedException("Pay processing already exists for this pay period; update is not allowed.");
                    }

                    PayPeriodDTO.PayPeriodModifiedById = LoginDTO.UserId;
                    PayPeriodDTO.PayPeriodModifiedOn = DateTime.UtcNow;

                    await _payPeriodDAL.UpdatePayPeriod(PayPeriodDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {PayPeriodDTO.PayPeriodId}";
                }
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}