using EPAServeur.Context;
using EPAServeur.Exceptions;
using EPAServeur.IServices;
using EPAServeur.Models.EP;
using EPAServeur.Services;
using IO.Swagger.ApiCollaborateur;
using IO.Swagger.DTO;
using IO.Swagger.Enum;
using Microsoft.EntityFrameworkCore;
using NUnit.Framework;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EPAServeur.Tests.Services
{
	[TestFixture]
	public class DemandeDelegationServiceTests
	{
		#region variables
		private EpContext context;
		private ICollaborateurApi collaborateurApi;
		#endregion

		#region Setup
		[SetUp]
		public void Setup()
		{
			// Utilisation d'une base de données en mémoire
			var optionBuider = new DbContextOptionsBuilder<EpContext>()
				.UseInMemoryDatabase("server_ep_test")
				.Options;

			context = new EpContext(optionBuider);

			context.Database.EnsureDeleted();
			context.Database.EnsureCreated();
			context.SaveChanges();

			DataSeeder.AddDemandeDelegationEP(context);

			// Ajout du jeu de données pour les tests
			//TO DO

			// Détache les entités du context car la base de données InMemory créé des conflits
			// entre les clés primaires lors d'un Update ou d'un Insert   
			foreach (var entity in context.ChangeTracker.Entries())
			{
				entity.State = EntityState.Detached;
			}
			collaborateurApi = new CollaborateurApi();
		}
		#endregion


		#region Test RecuperationDemandeDelegation
		[TestCase("771f9129-5610-4f4b-a8eb-902a98d722be", 0)]
		[TestCase("01ee85ff-d7f3-494b-b1de-26ced8fbfa0d", 3)]
		[TestCase("0afd1573-de75-4e5b-bfcb-1985259d8370", 1)]
		[TestCase("de98a866-736f-4295-a669-92a8694e2ee3", 1)]
		[TestCase("17b87130-0e9d-4b78-b0e3-a11e5f70318d", 1)]
		public async Task RecupererDemandesDelegation_OK(Guid? idReferent, int count)
		{
			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
			IEnumerable<DemandeDelegationDTO> demandesDelegation = await demandeDelegationService.RecupererDemandesDelegation(idReferent);
			foreach (DemandeDelegationDTO demandeDelegation in demandesDelegation)
			{
				Assert.AreEqual(idReferent, demandeDelegation.Referent.Id);
				Assert.AreEqual(demandeDelegation.EtatDemande, EtatDemande.EnAttente);
			}
			Assert.AreEqual(count, demandesDelegation.Count());
		}


		[Test]
		public void RecupererDemandeDelegation_ReferentNotFound()
		{
			Guid? idReferent = new Guid();
			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
			AsyncTestDelegate exception = () => demandeDelegationService.RecupererDemandesDelegation(idReferent);
			Assert.ThrowsAsync(typeof(ReferentNotFoundException), exception);
		}

		#endregion

		#region Reponse demande delegation
		[TestCase(1)]
		[TestCase(2)]
		[TestCase(5)]
		public async Task UpdateDemandeDelegation_ReponsePositive(long id)
		{
			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
			DemandeDelegation demandeDelegation = await context.DemandeDelegations.FindAsync(id);
			long idEp = demandeDelegation.IdEP;
			
			Ep ep = await context.Ep.FindAsync(idEp);
			Guid idReferent = demandeDelegation.IdReferent;
			Assert.AreNotEqual(ep.IdReferent, idReferent);

			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
			{
				Id = id,
				DateDemande = demandeDelegation.DateDemande,
				RaisonDemande = demandeDelegation.RaisonDemande,
				DateReponse = DateTime.Now,
				EtatDemande = EtatDemande.Validee
			};
			DemandeDelegationDTO reponse = await demandeDelegationService.UpdateDemandeDelegation(id, demandeDTO);
			demandeDelegation = await context.DemandeDelegations.FindAsync(id);
			Assert.IsNull(reponse);
			Assert.IsNull(demandeDelegation);
			ep = await context.Ep.FindAsync(idEp);
			Assert.AreEqual(ep.IdReferent, idReferent);
		}

		[TestCase(3)]
		[TestCase(4)]
		[TestCase(6)]
		public async Task UpdateDemandeDelegation_ReponseNegative(long id)
		{
			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
			DemandeDelegation demandeDelegation = await context.DemandeDelegations.FindAsync(id);
			long idEp = demandeDelegation.IdEP;

			Ep ep = await context.Ep.FindAsync(idEp);
			Guid idReferent = demandeDelegation.IdReferent;
			Assert.AreNotEqual(ep.IdReferent, idReferent);

			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
			{
				Id = id,
				DateDemande = demandeDelegation.DateDemande,
				RaisonDemande = demandeDelegation.RaisonDemande,
				DateReponse = DateTime.Now,
				EtatDemande = EtatDemande.Rejetee,
				RaisonRefus = "exemple raison refus"
			};
			DemandeDelegationDTO reponse = await demandeDelegationService.UpdateDemandeDelegation(id, demandeDTO);
			Assert.IsNotNull(reponse);
			Assert.AreEqual(reponse.EtatDemande, EtatDemande.Rejetee);
			ep = await context.Ep.FindAsync(idEp);
			Assert.AreNotEqual(ep.IdReferent, idReferent);
		}

		[TestCase(-5, EtatDemande.Validee, null)]
		[TestCase(-5, EtatDemande.Rejetee, "exemple refus")]
		[TestCase(0, EtatDemande.Validee, null)]
		[TestCase(0, EtatDemande.Rejetee, "exemple refus")]
		[TestCase(10, EtatDemande.Validee, null)]
		[TestCase(10, EtatDemande.Rejetee, "exemple refus")]
		public void UpdateDemandeDelegation_DemandeNonExistante(long id, EtatDemande etatDemande, string raisonRefus)
		{
			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
			{
				Id = id,
				DateDemande = DateTime.Now,
				RaisonDemande = "exemple raison demande",
				DateReponse = DateTime.Now,
				EtatDemande = etatDemande,
				RaisonRefus = raisonRefus
			};

			AsyncTestDelegate exception = () => demandeDelegationService.UpdateDemandeDelegation(id, demandeDTO);
			Assert.ThrowsAsync(typeof(DemandeDelegationNotFoundException), exception);
		}

		[TestCase(1, 4,EtatDemande.Validee, null)]
		[TestCase(2, 3,EtatDemande.Rejetee, "exemple refus")]
		[TestCase(3, 2,EtatDemande.Validee, null)]
		[TestCase(4, 1,EtatDemande.Rejetee, "exemple refus")]
		public void UpdateDemandeDelegation_DemandeIncompatible(long id, long idIncompatible, EtatDemande etatDemande, string raisonRefus)
		{
			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
			{
				Id = id,
				DateDemande = DateTime.Now,
				RaisonDemande = "exemple raison demande",
				DateReponse = DateTime.Now,
				EtatDemande = etatDemande,
				RaisonRefus = raisonRefus
			};

			AsyncTestDelegate exception = () => demandeDelegationService.UpdateDemandeDelegation(idIncompatible, demandeDTO);
			Assert.ThrowsAsync(typeof(DemandeDelegationIncompatibleException), exception);
		}



		[TestCase(7, EtatDemande.EnAttente, null)]
		[TestCase(7, EtatDemande.EnAttente, "raison")]
		[TestCase(7, EtatDemande.EnAttente, "")]
		[TestCase(7, EtatDemande.Rejetee, null)]
		[TestCase(7, EtatDemande.Rejetee, "")]
		public async Task UpdateDemandeDelegation_DemandeInvalid(long id, EtatDemande etatDemande, string raisonRefus)
		{
			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
			DemandeDelegation demandeDelegation = await context.DemandeDelegations.FindAsync(id);
			long idEp = demandeDelegation.IdEP;

			Ep ep = await context.Ep.FindAsync(idEp);
			Guid idReferent = demandeDelegation.IdReferent;
			Assert.AreNotEqual(ep.IdReferent, idReferent);

			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
			{
				Id = id,
				DateDemande = demandeDelegation.DateDemande,
				RaisonDemande = demandeDelegation.RaisonDemande,
				DateReponse = DateTime.Now,
				EtatDemande = etatDemande,
				RaisonRefus = raisonRefus
			};

			AsyncTestDelegate exception = () => demandeDelegationService.UpdateDemandeDelegation(id, demandeDTO);
			Assert.ThrowsAsync(typeof(DemandeDelegationInvalidException), exception);
		}
		#endregion
	}

}