using SportCompetitionsContracts.BindingModels;
using SportCompetitionsContracts.SearchModels;
using SportCompetitionsContracts.StoragesContracts;
using SportCompetitionsContracts.ViewModels;
using SportCompetitionsDatabaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SportCompetitionsDatabaseImplement.Implements
{
	public class ResultStorage : IResultStorage
	{
		public ResultViewModel? Delete(ResultBindingModel model)
		{
			using var context = new SportCompetitionsDatabase();
			var element = context.Results.FirstOrDefault(x => x.Id == model.Id);
			if (element != null)
			{
				context.Results.Remove(element);
				context.SaveChanges();
				return element.GetViewModel;
			}
			return null;
		}

		public ResultViewModel? GetElement(ResultSearchModel model)
		{
			using var context = new SportCompetitionsDatabase();
			return context.Results.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ResultName)) && x.ResultName == model.ResultName || model.Id.HasValue && x.Id == model.Id)?.GetViewModel;
		}

		public List<ResultViewModel> GetFilteredList(ResultSearchModel model)
		{
			if (string.IsNullOrEmpty(model.ResultName))
			{
				return new();
			}
			using var context = new SportCompetitionsDatabase();
			return context.Results.Where(x => x.ResultName.Contains(model.ResultName)).Select(x => x.GetViewModel).ToList();
		}

		public List<ResultViewModel> GetFullList()
		{
			using var context = new SportCompetitionsDatabase();
			return context.Results.Select(x => x.GetViewModel).ToList();
		}

		public ResultViewModel? Insert(ResultBindingModel model)
		{
			var newResult = Result.Create(model);
			if (newResult == null)
			{
				return null;
			}
			using var context = new SportCompetitionsDatabase();
			context.Results.Add(newResult);
			context.SaveChanges();
			return newResult.GetViewModel;
		}

		public ResultViewModel? Update(ResultBindingModel model)
		{
			using var context = new SportCompetitionsDatabase();
			var component = context.Results.FirstOrDefault(x => x.Id == model.Id);
			if (component == null)
			{
				return null;
			}
			component.Update(model);
			context.SaveChanges();
			return component.GetViewModel;
		}
	}
}