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

namespace EPAServeur.Tests.Services
{
	[TestFixture]
	public class ReferentEPTests
	{
		#region Variables
		private EpContext context;
		private ICollaborateurApi collaborateurApi;
		private ICollaborateurService collaborateurService;
		private ITransformDTO transformDTO;
		private Guid? referent1;
		private Guid? collaborateur1, collaborateur2, collaborateur3;
		private Guid? collaborateurNonExistant, collaborateurParti;
		#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();

			foreach (var entity in context.ChangeTracker.Entries())
			{
				entity.State = EntityState.Detached;
			}
			collaborateurApi = new CollaborateurApi();
			transformDTO = new TransformDTO();
			collaborateurService = new CollaborateurService(collaborateurApi, context, transformDTO);


			referent1 = new Guid("aa36f34c-9041-42f5-9db3-6536fe7f1696");

			collaborateur1 = new Guid("301ba7f3-095e-4912-8998-a7c942dc5f23");
			collaborateur2 = new Guid("a43b6f4f-f199-4dd0-93b6-a1cb2c0a0d14");
			collaborateur3 = new Guid("b5254c6c-7caa-435f-a4bb-e0cf92559832");
			collaborateurNonExistant = new Guid();
			collaborateurParti = new Guid("ea027734-ff0f-4308-8879-133a09fb3c46");

		}
		#endregion

		#region Ajout pour un collaborateur
		
		[Test]
		public async Task UpdateReferentUnCollaborateur()
		{
			ReferentEPService referentEPService = new ReferentEPService(context, collaborateurApi);
			CollaborateurDTO collaborateurDTO1 = await collaborateurService.GetCollaborateurByIdAsync(collaborateur1);

			ReferentEPDTO referentEPDTO1 = new ReferentEPDTO()
			{
				IdReferent = referent1,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO1.IdsCollaborateur.Add(collaborateur1);
			

			await referentEPService.UpdateReferentCollaborateurAsync(referentEPDTO1, collaborateur1);


			Assert.IsNotNull(collaborateurDTO1);
			Assert.IsNull(collaborateurDTO1.Referent);

			collaborateurDTO1 = await collaborateurService.GetCollaborateurByIdAsync(collaborateur1);

			Assert.IsNotNull(collaborateurDTO1);
			Assert.IsNotNull(collaborateurDTO1.Referent);
			Assert.AreEqual(collaborateurDTO1.Referent.Id, referent1);
		}

		[Test]
		public void UpdateReferentCollaborateur_CollaborateurIncompatibleException()
		{
			ReferentEPService referentEPService = new ReferentEPService(context, collaborateurApi);
			ReferentEPDTO referentEPDTO1 = new ReferentEPDTO()
			{
				IdReferent = referent1,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO1.IdsCollaborateur.Add(collaborateur1);

			ReferentEPDTO referentEPDTO2 = new ReferentEPDTO()
			{
				IdReferent = referent1,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO2.IdsCollaborateur.Add(null);

			AsyncTestDelegate exception1 = () => referentEPService.UpdateReferentCollaborateurAsync(referentEPDTO1, collaborateur2);
			Assert.ThrowsAsync(typeof(CollaborateurIncompatibleException), exception1);

			AsyncTestDelegate exception2 = () => referentEPService.UpdateReferentCollaborateurAsync(referentEPDTO2, null);
			Assert.ThrowsAsync(typeof(CollaborateurIncompatibleException), exception2);
		}

		[Test]
		public void UpdateReferentCollaborateur_ReferentNotFoundException()
		{
			ReferentEPService referentEPService = new ReferentEPService(context, collaborateurApi);
			ReferentEPDTO referentEPDTO = new ReferentEPDTO()
			{
				IdReferent = collaborateurNonExistant,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO.IdsCollaborateur.Add(collaborateur1);

			AsyncTestDelegate exception = () => referentEPService.UpdateReferentCollaborateurAsync(referentEPDTO, collaborateur1);
			Assert.ThrowsAsync(typeof(ReferentNotFoundException), exception);
		}

		[Test]
		public void UpdateReferentCollaborateur_CollaborateurPartiException()
		{
			ReferentEPService referentEPService = new ReferentEPService(context, collaborateurApi);
			ReferentEPDTO referentEPDTO1 = new ReferentEPDTO()
			{
				IdReferent = collaborateurParti,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO1.IdsCollaborateur.Add(collaborateur1);
			
			ReferentEPDTO referentEPDTO2 = new ReferentEPDTO()
			{
				IdReferent = collaborateurParti,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO2.IdsCollaborateur.Add(collaborateurParti);

			AsyncTestDelegate exception1 = () => referentEPService.UpdateReferentCollaborateurAsync(referentEPDTO1, collaborateur1);
			AsyncTestDelegate exception2 = () => referentEPService.UpdateReferentCollaborateurAsync(referentEPDTO2, collaborateurParti);
			Assert.ThrowsAsync(typeof(CollaborateurPartiException), exception1);
			Assert.ThrowsAsync(typeof(CollaborateurPartiException), exception2);
		}
		
		[Test]
		public void UpdateReferentCollaborateur_CollaborateurNotFoundException()
		{
			ReferentEPService referentEPService = new ReferentEPService(context, collaborateurApi);
			ReferentEPDTO referentEPDTO = new ReferentEPDTO()
			{
				IdReferent = referent1,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO.IdsCollaborateur.Add(collaborateurNonExistant);

			AsyncTestDelegate exception = () => referentEPService.UpdateReferentCollaborateurAsync(referentEPDTO, collaborateurNonExistant);
			Assert.ThrowsAsync(typeof(CollaborateurNotFoundException), exception);
		}

		[Test]
		public void UpdateReferentCollaborateur_ApiException()
		{
			ReferentEPService referentEPService = new ReferentEPService(context, collaborateurApi);
			ReferentEPDTO referentEPDTO = new ReferentEPDTO()
			{
				IdReferent = null,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO.IdsCollaborateur.Add(collaborateur1);
		

			AsyncTestDelegate exception = () => referentEPService.UpdateReferentCollaborateurAsync(referentEPDTO, collaborateur1);
			Assert.ThrowsAsync(typeof(ApiException), exception);
		}


		#endregion


		#region ajout de plusieurs collaborateur

		[Test]
		public async Task UpdateCollaborateursReferent()
		{
			ReferentEPService referentEPService = new ReferentEPService(context, collaborateurApi);
			ReferentEPDTO referentEPDTO = new ReferentEPDTO()
			{
				IdReferent = referent1,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO.IdsCollaborateur.Add(collaborateur1);
			referentEPDTO.IdsCollaborateur.Add(collaborateur3);
			referentEPDTO.IdsCollaborateur.Add(collaborateur2);

			await referentEPService.UpdateCollaborateursReferentAsync(referentEPDTO, referent1);

			foreach(Guid guid in referentEPDTO.IdsCollaborateur)
			{
				ReferentEP referentEP = await context.ReferentEP.FindAsync(guid);
				Assert.AreEqual(referent1, referentEP.IdReferent);
			}
		}
		
		[Test]
		public void UpdateCollaborateursReferent_CollaborateurNotFound()
		{
			ReferentEPService referentEPService = new ReferentEPService(context, collaborateurApi);
			ReferentEPDTO referentEPDTO = new ReferentEPDTO()
			{
				IdReferent = referent1,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO.IdsCollaborateur.Add(collaborateur1);
			referentEPDTO.IdsCollaborateur.Add(collaborateur3);
			referentEPDTO.IdsCollaborateur.Add(collaborateurNonExistant);
			referentEPDTO.IdsCollaborateur.Add(collaborateur2);

			AsyncTestDelegate exception = () => referentEPService.UpdateCollaborateursReferentAsync(referentEPDTO, referent1);
			Assert.ThrowsAsync(typeof(CollaborateurNotFoundException), exception);
		}

		[Test]
		public void UpdateCollaborateursReferent_ReferentNotFound()
		{
			ReferentEPService referentEPService = new ReferentEPService(context, collaborateurApi);
			ReferentEPDTO referentEPDTO = new ReferentEPDTO()
			{
				IdReferent = collaborateurNonExistant,
				IdsCollaborateur = new List<Guid?>(),
			};
			referentEPDTO.IdsCollaborateur.Add(collaborateur1);
			referentEPDTO.IdsCollaborateur.Add(collaborateur3);
			referentEPDTO.IdsCollaborateur.Add(collaborateur2);

			AsyncTestDelegate exception = () => referentEPService.UpdateCollaborateursReferentAsync(referentEPDTO, collaborateurNonExistant);
			Assert.ThrowsAsync(typeof(ReferentNotFoundException), exception);

		}
		#endregion
	}
}