using Microsoft.EntityFrameworkCore;
using ShipyardContracts.BindingModels;
using ShipyardContracts.SearchModels;
using ShipyardContracts.StoragesContracts;
using ShipyardContracts.ViewModels;
using ShipyardDataBaseImplement.Models;

namespace ShipyardDataBaseImplement.Implements
{
	public class ImplementerStorage : IImplementerStorage
	{
		public ImplementerViewModel? Delete(ImplementerBindingModel model)
		{
			using var context = new ShipyardDataBase();
			var element = context.Implementers
				.Include(x => x.Orders)
				.FirstOrDefault(rec => rec.Id == model.Id);
			if (element != null)
			{
				context.Implementers.Remove(element);
				context.SaveChanges();
				return element.GetViewModel;
			}
			return null;
		}

		public ImplementerViewModel? GetElement(ImplementerSearchModel model)
		{
			using var context = new ShipyardDataBase();
			if (model.Id.HasValue)
			{
				return context.Implementers
				.FirstOrDefault(x => (x.Id == model.Id))?.GetViewModel;
			}
			else if (!string.IsNullOrEmpty(model.ImplementerFIO) && !string.IsNullOrEmpty(model.Password))
			{
				return context.Implementers
				.FirstOrDefault(x => (x.ImplementerFIO == model.ImplementerFIO && x.Password == model.Password))?.GetViewModel;
			}
			else if (!string.IsNullOrEmpty(model.ImplementerFIO))
			{
				return context.Implementers
				.FirstOrDefault(x => (x.ImplementerFIO == model.ImplementerFIO))?.GetViewModel;
			}
			return new();
		}

		public List<ImplementerViewModel> GetFilteredList(ImplementerSearchModel model)
		{
			if (model == null)
			{
				return new();
			}
			if (!string.IsNullOrEmpty(model.ImplementerFIO))
			{
				using var context = new ShipyardDataBase();
				return context.Implementers
					.Include(x => x.Orders)
					.Where(x => x.ImplementerFIO.Contains(model.ImplementerFIO))
					.Select(x => x.GetViewModel)
					.ToList();
			}
			return new();
		}

		public List<ImplementerViewModel> GetFullList()
		{
			using var context = new ShipyardDataBase();
			return context.Implementers
					.Include(x => x.Orders)
					.Select(x => x.GetViewModel)
					.ToList();
		}

		public ImplementerViewModel? Insert(ImplementerBindingModel model)
		{
			var newImplementer = Implementer.Create(model);
			if (newImplementer == null)
			{
				return null;
			}
			using var context = new ShipyardDataBase();
			context.Implementers.Add(newImplementer);
			context.SaveChanges();
			return newImplementer.GetViewModel;
		}

		public ImplementerViewModel? Update(ImplementerBindingModel model)
		{
			using var context = new ShipyardDataBase();
			var client = context.Implementers.FirstOrDefault(x => x.Id == model.Id);
			if (client == null)
			{
				return null;
			}
			client.Update(model);
			context.SaveChanges();
			return client.GetViewModel;
		}
	}
}