using CaseAccountingContracts.BindingModels;
using CaseAccountingContracts.SearchModels;
using CaseAccountingContracts.StoragesContracts;
using CaseAccountingContracts.ViewModels;
using CaseAccountingDataBaseImplement.Models;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CaseAccountingDataBaseImplement.Implements
{
    public class HearingStorage : IHearingStorage
    {
        public HearingViewModel? Delete(HearingBindingModel model)
        {
            using var context = new CaseAccountingDatabase();
            var element = context.Hearings
                .Include(x => x.Case)
                .Include(x => x.User)
                .FirstOrDefault(rec => rec.Id == model.Id);
            if (element == null)
            {
                return null;
            }
            context.Hearings.Remove(element);
            context.SaveChanges();
            return element.GetViewModel;
        }

        public HearingViewModel? GetElement(HearingSearchModel model)
        {
            if (!model.Id.HasValue)
            {
                return null;
            }
            using var context = new CaseAccountingDatabase();
            return context.Hearings
                .Include(x => x.Case)
                .Include(x => x.User)
                .FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id)
                ?.GetViewModel;
        }

        public List<HearingViewModel> GetFilteredList(HearingSearchModel model)
        {
            using var context = new CaseAccountingDatabase();
            if (model.Id.HasValue)
            {
                return context.Hearings
                    .Include(x => x.Case)
                    .Include(x => x.User)
                    .Where(x => x.Id == model.Id)
                    .Select(x => x.GetViewModel)
                    .ToList();
            }
            else if (model.Date != null)
            {
                return context.Hearings
                    .Include(x => x.Case)
                    .Include(x => x.User)
                    .Where(x => x.Date == model.Date)
                    .Select(x => x.GetViewModel)
                    .ToList();
            }
            else if (model.UserId.HasValue)
            {
                return context.Hearings
                    .Include(x => x.Case)
                    .Include(x => x.User)
                    .Where(x => x.UserId == model.UserId)
                    .Select(x => x.GetViewModel)
                    .ToList();
            }
            else if (model.CaseId.HasValue)
            {
                return context.Hearings
                    .Include(x => x.Case)
                    .Include(x => x.User)
                    .Where(x => x.CaseId == model.CaseId)
                    .Select(x => x.GetViewModel)
                    .ToList();
            }
            else
            {
                return new();
            }
        }

        public List<HearingViewModel> GetFullList()
        {
            using var context = new CaseAccountingDatabase();
            return context.Hearings
                .Include(x => x.Case)
                .Include(x => x.User)
                .Select(x => x.GetViewModel).ToList();
        }

        public HearingViewModel? Insert(HearingBindingModel model)
        {
            var newHearing = Hearing.Create(model);
            if (newHearing == null)
            {
                return null;
            }

            using var context = new CaseAccountingDatabase();

            context.Hearings.Add(newHearing);
            context.SaveChanges();
            return context.Hearings
                         .Include(x => x.Case)
                         .Include(x => x.User)
                         .FirstOrDefault(x => x.Id == newHearing.Id)
                         ?.GetViewModel;
        }

        public HearingViewModel? Update(HearingBindingModel model)
        {
            using var context = new CaseAccountingDatabase();

            var hearing = context.Hearings
                .Include(x => x.Case)
                .Include(x => x.User)
                .FirstOrDefault(x => x.Id == model.Id);

            if (hearing == null)
            {
                return null;
            }
            hearing.Update(model);
            context.SaveChanges();
            return context.Hearings
                          .Include(x => x.Case)
                          .Include(x => x.User)
                          .FirstOrDefault(x => x.Id == model.Id)
                          ?.GetViewModel;
        }
    }
}