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

namespace LCU.API.Collections.RepoApi.Services
{
    public class RepoCompanySelectionService : IRepoCompanySelectionService
    {
        private readonly IRepoCompanySelectionRepository _repoCompanySelectionRepository;
        private readonly IUnitOfWork _unitOfWork;

        public RepoCompanySelectionService(
            IRepoCompanySelectionRepository repoCompanySelectionRepository,
            IUnitOfWork unitOfWork)
        {
            _repoCompanySelectionRepository = repoCompanySelectionRepository;
            _unitOfWork = unitOfWork;
        }

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

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

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

            return repoCompanySelection;
        }

        public async Task SaveChangesAsync(IList<RepoCompanySelection> repoCompanySelections)
        {
            _repoCompanySelectionRepository.SaveRange(repoCompanySelections);
            await _unitOfWork.CompleteAsync();
        }
        
    }
}