using AutoMapper;
using AutoMapper.QueryableExtensions;
using HanyadikHetVan.Data;
using HanyadikHetVan.Data.Entities;
using HanyadikHetVan.DTO;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace HanyadikHetVan.Services
{
    public class WeeklyTimeSpanService
    {
        private readonly ApplicationDbContext _dbContext;
        private readonly IMapper _mapper;

        public WeeklyTimeSpanService(ApplicationDbContext dbContext, IMapper mapper)
        {
            _dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
            _mapper = mapper ?? throw new ArgumentNullException(nameof(mapper));
        }

        public async Task<List<WeeklyTimeSpanDTO>> GetAllWeeklyTimeSpans()
        {
            var wts = await _dbContext.WeeklyTimeSpans.Include(x => x.Pauses).ToListAsync();
            return _mapper.Map<List<WeeklyTimeSpan>, List<WeeklyTimeSpanDTO>>(wts);
        }

        public async Task<WeeklyTimeSpanDTO> GetWeeklyTimeSpan(int weeklytimespanId)
        {
            var wts = await _dbContext.WeeklyTimeSpans.Include(x => x.Pauses).Where(x => x.Id == weeklytimespanId).FirstOrDefaultAsync();
            return _mapper.Map<WeeklyTimeSpan, WeeklyTimeSpanDTO>(wts);
        }

        public async Task<List<PauseDTO>> GetPausesOfWeeklyTimeSpan(int weeklytimespanId)
        {
            var pauses = await _dbContext.WeeklyTimeSpans.Include(x => x.Pauses).Where(x => x.Id == weeklytimespanId).FirstOrDefaultAsync();
            return _mapper.Map<ICollection<Pause>, List<PauseDTO>>(pauses.Pauses);
        }

        public async Task<WeeklyTimeSpanDTO> GetWeeklyTimeSpanByStartdate(DateTime startTime)
        {
            var wts = await _dbContext.WeeklyTimeSpans.Include(x => x.Pauses).Where(x => x.Startdate.Date.Equals(startTime.Date)).ToListAsync();
            return _mapper.Map<List<WeeklyTimeSpan>, WeeklyTimeSpanDTO>(wts);
        }

        public async Task<WeeklyTimeSpanDTO> AddWeeklyTimeSpan(WeeklyTimeSpanDTO weeklytimespan)
        {
            var wts = _mapper.Map<WeeklyTimeSpanDTO, WeeklyTimeSpan>(weeklytimespan);
            var obj = await _dbContext.WeeklyTimeSpans.AddAsync(wts);
            await _dbContext.SaveChangesAsync();
            return _mapper.Map<WeeklyTimeSpan, WeeklyTimeSpanDTO>(obj.Entity);
        }

        public async Task<bool> DeleteWeeklyTimeSpan(int weeklytimespanId)
        {
            try
            {
                var item = await _dbContext.WeeklyTimeSpans.Where(x => x.Id == weeklytimespanId).FirstOrDefaultAsync();
                _dbContext.WeeklyTimeSpans.Remove(item);
                await _dbContext.SaveChangesAsync();
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }

        public async Task<WeeklyTimeSpanDTO> UpdateWeeklyTimeSpan(WeeklyTimeSpanDTO weeklytimespan)
        {
            var wts = _mapper.Map<WeeklyTimeSpanDTO, WeeklyTimeSpan>(weeklytimespan);
            wts.Id = weeklytimespan.Id;
            _dbContext.WeeklyTimeSpans.Update(wts);
            await _dbContext.SaveChangesAsync();
            var newwts = await _dbContext.WeeklyTimeSpans.Where(x => x.Id == weeklytimespan.Id).FirstOrDefaultAsync();
            return _mapper.Map<WeeklyTimeSpan, WeeklyTimeSpanDTO>(newwts);
        }
    }
}