using PrecastConcretePlantContracts.BindingModels;
using PrecastConcretePlantContracts.SearchModels;
using PrecastConcretePlantContracts.StoragesContracts;
using PrecastConcretePlantContracts.ViewModels;
using PrecastConcretePlantDatabaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PrecastConcretePlantDatabaseImplement.Implements
{
	public class ClientStorage : IClientStorage
	{
		public List<ClientViewModel> GetFullList()
		{
			using var context = new PrecastConcretePlantDatabase();
			return context.Clients.Select(x => x.GetViewModel).ToList();
		}

		public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
		{
			if (string.IsNullOrEmpty(model.ClientFIO) && string.IsNullOrEmpty(model.Email))
			{
				return new();
			}
			using var context = new PrecastConcretePlantDatabase();
			return context.Clients.Where(x => (!string.IsNullOrEmpty(model.ClientFIO) && x.ClientFIO.Contains(model.ClientFIO)) ||
			(!string.IsNullOrEmpty(model.Email) && !x.Email.Contains(model.Email))).Select(x => x.GetViewModel).ToList();
		}

		public ClientViewModel? GetElement(ClientSearchModel model)
		{
			if (!model.Id.HasValue && string.IsNullOrEmpty(model.ClientFIO) && (string.IsNullOrEmpty(model.Email) && string.IsNullOrEmpty(model.Password)))
			{
				return null;
			}
			using var context = new PrecastConcretePlantDatabase();
			return context.Clients.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id) ||
			(!string.IsNullOrEmpty(model.ClientFIO) && x.ClientFIO == model.ClientFIO) ||
			(!string.IsNullOrEmpty(model.Email) && !string.IsNullOrEmpty(model.Password) && x.Email == model.Email && x.Password == model.Password))?.GetViewModel;
		}

		public ClientViewModel? Insert(ClientBindingModel model)
		{
			var newClient = Client.Create(model);
			if (newClient == null)
			{
				return null;
			}
			using var context = new PrecastConcretePlantDatabase();
			context.Clients.Add(newClient);
			context.SaveChanges();
			return newClient.GetViewModel;
		}

		public ClientViewModel? Update(ClientBindingModel model)
		{
			using var context = new PrecastConcretePlantDatabase();
			var client = context.Clients.FirstOrDefault(x => x.Id == model.Id);
			if (client == null)
			{
				return null;
			}
			client.Update(model);
			context.SaveChanges();
			return client.GetViewModel;
		}

		public ClientViewModel? Delete(ClientBindingModel model)
		{
			using var context = new PrecastConcretePlantDatabase();
			var client = context.Clients.FirstOrDefault(x => x.Id == model.Id);
			if (client != null)
			{
				context.Clients.Remove(client);
				context.SaveChanges();
				return client.GetViewModel;
			}
			return null;
		}
	}
}