using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Threading.Tasks;
using LCU.API.Collections.RepoApi.Exceptions;
using LCU.API.Collections.RepoApi.Models;
using LCU.Shared.Collections.RepoApiLib.Models;
using LCU.Shared.Collections.RepoApiLib.Repositories;
using Serilog;

namespace LCU.API.Collections.RepoApi.Services
{
    public class RepoCompanyService : IRepoCompanyService
    {
        private IRepoCompanyRepository _repoCompanyRepository;
        private IUnitOfWork _unitOfWork;

        public RepoCompanyService(
            IRepoCompanyRepository repoCompanyRepository,
            IUnitOfWork unitOfWork)
        {
            _repoCompanyRepository = repoCompanyRepository;
            _unitOfWork = unitOfWork;
        }

        public async Task<IEnumerable<RepoCompany>> ListAll()
        {
            try
            {
                return await _repoCompanyRepository.ListAsync();
            }
            catch (Exception ex)
            {
                Log.Error(ex, "Failure retrieving Repo Companies");
                throw new ServerErrorException();
            }
        }

        public async Task<RepoCompany> Get(int id)
        {
            RepoCompany repoCompany;
            try
            {
                repoCompany = await _repoCompanyRepository.FindByIdAsync(id);
            }
            catch (Exception ex)
            {
                Log.Error(ex, $"Failure retrieving Repo Company with id: {id}");
                throw new NotFoundException($"Repo Company with id {id} not found");
            }

            if (repoCompany == null)
            {
                throw new NotFoundException($"Repo Company with id {id} not found");
            }

            return repoCompany;
        }


        public async Task<RepoCompany> Update(RepoCompany repoCompany, AppUser user)
        {
            var existing = await _repoCompanyRepository.FindByIdAsync(repoCompany.ID);

            if (existing == null)
            {
                throw new NotFoundException($"Repo Company with id {repoCompany.ID} not found");
            }

            existing.Name = repoCompany.Name;
            existing.Email = repoCompany.Email;
            existing.Address_Line_1 = repoCompany.Address_Line_1;
            existing.Address_Line_2 = repoCompany.Address_Line_2;
            existing.City = repoCompany.City;
            existing.State = repoCompany.State;
            existing.ZIP = repoCompany.ZIP;
            existing.Country = repoCompany.Country;
            existing.Phone = repoCompany.Phone;
            existing.Fax = repoCompany.Fax;
            existing.ReferenceId = repoCompany.ReferenceId;

            if (existing.DisabledDate != repoCompany.DisabledDate)
            {
                if (repoCompany.DisabledDate == null)
                {
                    existing.DisabledDate = null;
                    existing.DisabledBy = null;
                } else
                {
                    existing.DisabledDate = repoCompany.DisabledDate;
                    existing.DisabledBy = user.FirstName + " " + user.LastName;
                }

            }

            try
            {
                _repoCompanyRepository.Update(existing);
                await _unitOfWork.CompleteAsync();
                return existing;
            }
            catch (SqlException ex)
            {
                Log.Error(ex, $"SQL Filure updating Repo Company: {repoCompany}", repoCompany);
                throw new ServerErrorException();
            }
            catch (Exception ex)
            {
                Log.Error(ex, $"Failure updating Repo Repo Company: {repoCompany}", repoCompany);
                throw new ServerErrorException();
            }
        }

        public async Task<RepoCompany> Save(RepoCompany repoCompany)
        {
            try
            {
                var newCompany = await _repoCompanyRepository.AddAsync(repoCompany);
                await _unitOfWork.CompleteAsync();
                return newCompany;
            }
            catch (Exception ex)
            {
                Log.Error(ex, $"Failure saving Repo Company: {repoCompany}", repoCompany);
                throw new ServerErrorException();
            }
        }


        public async Task<RepoCompany> Delete(int id)
        {
            var existingRepoCompany = await _repoCompanyRepository.FindByIdAsync(id);

            if (existingRepoCompany == null)
            {
                throw new NotFoundException($" Repo Company with id {id} not found.");
            }

            try
            {
                _repoCompanyRepository.Remove(existingRepoCompany);
                await _unitOfWork.CompleteAsync();
                return existingRepoCompany;
            }
            catch (SqlException ex)
            {
                Log.Error(ex, $"SQL Failure deleting Repo Company with id: {id}");
                throw new ServerErrorException();
            }
            catch (Exception ex)
            {
                Log.Error(ex, $"Failure deleting Repo Company with id: {id}");
                throw new ServerErrorException();
            }
        }

    }
}