using EPAServeur.Context;
using EPAServeur.Exceptions;
using EPAServeur.Models.Formation;
using EPAServeur.Services;
using IO.Swagger.Controllers;
using IO.Swagger.DTO;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Abstractions;
using NUnit.Framework;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.DependencyInjection;
using EPAServeur.IServices;
using Moq;
using IO.Swagger.ApiCollaborateur;

namespace EPAServeur.Tests.Controllers
{
    [TestFixture]
    public class FormationApiTests
    {
        #region Variables

        private IFormationService formationService;
        private Mock<IWebHostEnvironment> mockEnvironment;
        private EpContext epContext;
        #endregion

        #region Setup

        [SetUp]
        public void Setup()
        {
            // Création d'une collection de services pour l'injection de dépendance
            var services = new ServiceCollection();

            // Utilisation d'une base de données en mémoire
            var optionBuider = new DbContextOptionsBuilder<EpContext>()
                .UseInMemoryDatabase("server_ep_test")
                .Options;

            services.AddDbContext<EpContext>(b => b.UseInMemoryDatabase("server_ep_test"));

            epContext = new EpContext(optionBuider);

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

            // Ajout du jeu de données pour les tests
            DataSeeder.AddFormations(epContext);

            // 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 epContext.ChangeTracker.Entries())
            {
                entity.State = EntityState.Detached;
            }

            services.AddScoped<ICollaborateurApi, CollaborateurApi>();
            services.AddScoped<ICollaborateurService, CollaborateurService>();
            services.AddScoped<IFormationService, FormationService>();

            // Récupère le service qui sera utilsé pour tester le contrôleur
            var serviceProvider = services.BuildServiceProvider();
            formationService = serviceProvider.GetService<IFormationService>();

            // Simule l'interface IWebHostEnvironment avec Moq
            mockEnvironment = new Mock<IWebHostEnvironment>();

            mockEnvironment
                .Setup(m => m.EnvironmentName)
                .Returns("Development");
           
        }

        #endregion

        #region Tests GetFormationById

        [Test]
        public void GetById_PasseEnParamUnIdInconnu_RetourneUnObjetNotFoundResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);

            // Act
            var notFoundResult = formationsApiController.GetFormationById(99999);

            // Assert
            Assert.IsInstanceOf<NotFoundObjectResult>(notFoundResult.Result);
        }

        [Test]
        public void GetFormationById_PasseEnParamUnIdConnu_RetourneUnObjetOkResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);

             // Act
             var okResult = formationsApiController.GetFormationById(1);

            // Assert
            Assert.IsInstanceOf<OkObjectResult>(okResult.Result);
        }


        [Test]
        public void GetFormationById_PasseEnParamUnIdConnu_RetourneLaBonneFormation()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            long idFormation = 1;

            // Act
            var okResult = formationsApiController.GetFormationById(idFormation).Result as OkObjectResult;

            // Assert
            Assert.IsInstanceOf<FormationDTO>(okResult.Value);
            Assert.AreEqual(idFormation, (okResult.Value as FormationDTO).Id);
        }
        #endregion

        #region Tests GetFormations

        [Test]
        public void GetFormations_PasseDesParamsPresentsDansLaBDD_RetourneUnObjetOkResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            List<int?> idStatuts = new List<int?> { 1, 2, 3 };

            // Act
            var okResult = formationsApiController.GetFormations(1, idStatuts, true, 1, 5, "formation", null, null, null);

            // Assert
            Assert.IsInstanceOf<OkObjectResult>(okResult.Result);
        }

        [Test]
        public void GetFormations_PasseDesParamsPresentsDansLaBDD_RetourneLesCinqPremieresFormations()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            List<int?> idStatuts = new List<int?> { 1, 2, 3 };
            int nbFormation = 5;
            int idFirstFormation = 5;
            int idLastFormation = 1;

            // Act
            var okResult = formationsApiController.GetFormations(1, idStatuts, true, 1, 5, "formation", null, null, null).Result as OkObjectResult;

            // Assert
            Assert.IsInstanceOf<IEnumerable<FormationDetailsDTO>>(okResult.Value);
            Assert.AreEqual(nbFormation, (okResult.Value as IEnumerable<FormationDetailsDTO>).Count());
            Assert.AreEqual(idFirstFormation, (okResult.Value as IEnumerable<FormationDetailsDTO>).First().Id);
            Assert.AreEqual(idLastFormation, (okResult.Value as IEnumerable<FormationDetailsDTO>).Last().Id);
        }

        #endregion

        #region Tests GetFormationsCount

        [Test]
        public void GetFormationsCount_PasseDesParamsPresentsDansLaBDD_RetourneUnObjetOkResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            List<int?> idStatuts = new List<int?> { 1, 2, 3 };

            // Act
            var okResult = formationsApiController.GetFormationsCount(1, idStatuts, 1, 5, "formation", null, null);

            // Assert
            Assert.IsInstanceOf<OkObjectResult>(okResult.Result);
        }

        [Test]
        public void GetFormationsCount_PasseDesParamsPresentsDansLaBDD_RetourneLeBonNombreDeFormation()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            List<int?> idStatuts = new List<int?> { 1, 2, 3 };
            int nbFormation = 5;

            // Act
            var okResult = formationsApiController.GetFormationsCount(1, idStatuts, 1, 5, "formation", null, null).Result as OkObjectResult;

            // Assert
            Assert.IsInstanceOf<long>(okResult.Value);
            Assert.AreEqual(nbFormation, (long)okResult.Value);
        }

        #endregion

        #region Tests GetModesFormation

        [Test]
        public void GetModesFormation_RetourneUnObjetOkResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);

            // Act
            var okResult = formationsApiController.GetModesFormation();

            // Assert
            Assert.IsInstanceOf<OkObjectResult>(okResult.Result);
        }

        [Test]
        public void GetModesFormation_RetourneTousLesModes()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            int nbModeFormation = 4;
            // Act
            var okResult = formationsApiController.GetModesFormation().Result as OkObjectResult;

            // Assert
            Assert.IsInstanceOf<IEnumerable<ModeFormationDTO>>(okResult.Value);
            Assert.AreEqual(nbModeFormation, (okResult.Value as IEnumerable<ModeFormationDTO>).Count());
        }

        #endregion

        #region Tests GetOriginesFormation

        [Test]
        public void GetOriginesFormation_RetourneUnObjetOkResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);

            // Act
            var okResult = formationsApiController.GetOriginesFormation();

            // Assert
            Assert.IsInstanceOf<OkObjectResult>(okResult.Result);
        }

        [Test]
        public void GetOriginesFormation_RetourneToutesLesOrigines()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            int nbOrigineFormation = 4;
            // Act
            var okResult = formationsApiController.GetOriginesFormation().Result as OkObjectResult;

            // Assert
            Assert.IsInstanceOf<IEnumerable<OrigineFormationDTO>>(okResult.Value);
            Assert.AreEqual(nbOrigineFormation, (okResult.Value as IEnumerable<OrigineFormationDTO>).Count());
        }

        #endregion

        #region Tests GetStatutsFormation

        [Test]
        public void GetStatusFormation_RetourneUnObjetOkResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);

            // Act
            var okResult = formationsApiController.GetStatutsFormation();

            // Assert
            Assert.IsInstanceOf<OkObjectResult>(okResult.Result);
        }

        [Test]
        public void GetStatutsFormation_RetourneTousLesStatuts()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            int nbStatutFormation = 4;
            // Act
            var okResult = formationsApiController.GetStatutsFormation().Result as OkObjectResult;

            // Assert
            Assert.IsInstanceOf<IEnumerable<StatutFormationDTO>>(okResult.Value);
            Assert.AreEqual(nbStatutFormation, (okResult.Value as IEnumerable<StatutFormationDTO>).Count());
        }

        #endregion

        #region Tests GetTypesFormation

        [Test]
        public void GetTypesFormation_RetourneUnObjetOkResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);

            // Act
            var okResult = formationsApiController.GetTypesFormation();

            // Assert
            Assert.IsInstanceOf<OkObjectResult>(okResult.Result);
        }

        [Test]
        public void GetTypesFormation_RetourneTousLesTypes()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            int nbTypeFormation = 4;
            // Act
            var okResult = formationsApiController.GetTypesFormation().Result as OkObjectResult;

            // Assert
            Assert.IsInstanceOf<IEnumerable<TypeFormationDTO>>(okResult.Value);
            Assert.AreEqual(nbTypeFormation, (okResult.Value as IEnumerable<TypeFormationDTO>).Count());
        }

        #endregion

        #region Tests AddFormation

        [Test]
        public void AddFormation_AjouteUneFormationAvecDesObjetsEnfantsInvalides_RetourneUnObjetObjectResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);

            ModeFormationDTO modeExterne = new ModeFormationDTO { Id = 0, Libelle = "Externe" };
            StatutFormationDTO statutPlanifie = new StatutFormationDTO { Id = 1, Libelle = "Planifiée" };
            TypeFormationDTO typeELearning = new TypeFormationDTO { Id = 3, Libelle = "E-learning" };
            OrigineFormationDTO origineFormationCollaborateur = new OrigineFormationDTO { Id = 1, Libelle = "Demande collaborateur" };

            FormationDTO formation = new FormationDTO
            {
                Intitule = "Test Formation",
                IdAgence = 1,
                DateDebut = new DateTime(2020, 10, 31),
                DateFin = new DateTime(2020, 11, 02),
                Heure = 2,
                Jour = 1,
                Mode = modeExterne,
                Type = typeELearning,
                Organisme = "Apside",
                Origine = origineFormationCollaborateur,
                Statut = statutPlanifie,
                EstCertifiee = false
            };

            // Act
            var objectResult = formationsApiController.AddFormation(formation);

            // Assert
            Assert.IsInstanceOf<ObjectResult>(objectResult.Result);
        }

        [Test]
        public void AddFormation_AjouteUneFormationValide_RetourneUnObjetCreatedResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);

            ModeFormationDTO modeExterne = new ModeFormationDTO { Id = 1, Libelle = "Externe" };
            StatutFormationDTO statutPlanifie = new StatutFormationDTO { Id = 1, Libelle = "Planifiée" };
            TypeFormationDTO typeELearning = new TypeFormationDTO { Id = 3, Libelle = "E-learning" };
            OrigineFormationDTO origineFormationCollaborateur = new OrigineFormationDTO { Id = 1, Libelle = "Demande collaborateur" };

            FormationDTO formation = new FormationDTO
            {
                Intitule = "Test Formation",
                IdAgence = 1,
                DateDebut = new DateTime(2020, 10, 31),
                DateFin = new DateTime(2020, 11, 02),
                Heure = 2,
                Jour = 1,
                Mode = modeExterne,
                Type = typeELearning,
                Organisme = "Apside",
                Origine = origineFormationCollaborateur,
                Statut = statutPlanifie,
                EstCertifiee = false
            };

            // Act
            var createdResult = formationsApiController.AddFormation(formation);

            // Assert
            Assert.IsInstanceOf<CreatedResult>(createdResult.Result);
        }

        [Test]
        public void AddFormation_AjouteUneFormationValide_RetourneLaFormationCreee()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);

            ModeFormationDTO modeExterne = new ModeFormationDTO { Id = 1, Libelle = "Externe" };
            StatutFormationDTO statutPlanifie = new StatutFormationDTO { Id = 1, Libelle = "Planifiée" };
            TypeFormationDTO typeELearning = new TypeFormationDTO { Id = 3, Libelle = "E-learning" };
            OrigineFormationDTO origineFormationCollaborateur = new OrigineFormationDTO { Id = 1, Libelle = "Demande collaborateur" };

            FormationDTO formation = new FormationDTO
            {
                Intitule = "Test Formation",
                IdAgence = 1,
                DateDebut = new DateTime(2020, 10, 31),
                DateFin = new DateTime(2020, 11, 02),
                Heure = 2,
                Jour = 1,
                Mode = modeExterne,
                Type = typeELearning,
                Organisme = "Apside",
                Origine = origineFormationCollaborateur,
                Statut = statutPlanifie,
                EstCertifiee = false
            };

            // Act
            var createdResult = formationsApiController.AddFormation(formation).Result as CreatedResult;

            // Assert
            Assert.IsInstanceOf<FormationDTO>(createdResult.Value);
            Assert.AreEqual("Test Formation", (createdResult.Value as FormationDTO).Intitule);
        }

        #endregion

        #region Tests UpdateFormation

        [Test]
        public async Task UpdateFormation_ModifieUneFormationAvecDesObjetsEnfantsInvalides_RetourneUnObjetObjectResultDansCatchFormationInvalidException()
        {
            // Arrange
            long idFormation = 1;
            string nouvelleIntitule = "Formation modifiée";
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            FormationDTO formation =  await formationService.GetFormationByIdAsync(idFormation);

            formation.Intitule = nouvelleIntitule;
            formation.Mode.Id = 0;
            formation.Statut.Id = 0;

            // Act
            var objectResult = formationsApiController.UpdateFormation(formation, idFormation);

            // Assert
            Assert.IsInstanceOf<ObjectResult>(objectResult.Result);
        }

        [Test]
        public async Task UpdateFormation_ModifieUneFormationAvecDesObjetsEnfantsInvalides_RetourneUnObjetObjectResultDansCatchFormationIncompatibleIdException()
        {
            // Arrange
            long idFormation = 1;
            string nouvelleIntitule = "Formation modifiée";
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            FormationDTO formation = await formationService.GetFormationByIdAsync(idFormation);

            idFormation = 2;
            formation.Intitule = nouvelleIntitule;

            // Act
            var objectResult = formationsApiController.UpdateFormation(formation, idFormation);

            // Assert
            Assert.IsInstanceOf<ObjectResult>(objectResult.Result);
        }

        [Test]
        public async Task UpdateFormation_ModifieUneFormatioInexistante_RetourneUnObjetObjectResultDansCatchFormationNotFoundExceptionn()
        {
            // Arrange
            long idFormationExistant = 1;
            long idFormationInexistant = 999;
            string nouvelleIntitule = "Formation modifiée";
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            FormationDTO formation = await formationService.GetFormationByIdAsync(idFormationExistant);

            formation.Id = idFormationInexistant;
            formation.Intitule = nouvelleIntitule;

            // Act
            var objectResult = formationsApiController.UpdateFormation(formation, idFormationInexistant);

            // Assert
            Assert.IsInstanceOf<ObjectResult>(objectResult.Result);
        }

        [Test]
        public async Task UpdateFormation_ModifieUneFormationValide_RetourneUnObjetOkObjectResult()
        {
            // Arrange
            long idFormation = 1;
            string nouvelleIntitule = "Formation modifiée";
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object); ModeFormationDTO modeExterne = epContext.ModeFormation.Where(mode => mode.IdModeFormation == 2)
                                                     .Select(mode => new ModeFormationDTO { Id = mode.IdModeFormation, Libelle = mode.Libelle }).FirstOrDefault();
            StatutFormationDTO statutPlanifie = epContext.StatutFormation.Where(mode => mode.IdStatutFormation == 2)
                                                                .Select(mode => new StatutFormationDTO { Id = mode.IdStatutFormation, Libelle = mode.Libelle }).FirstOrDefault();
            TypeFormationDTO typeELearning = epContext.TypeFormation.Where(mode => mode.IdTypeFormation == 1)
                                                                .Select(mode => new TypeFormationDTO { Id = mode.IdTypeFormation, Libelle = mode.Libelle }).FirstOrDefault();
            OrigineFormationDTO origineFormationCollaborateur = epContext.OrigineFormation.Where(mode => mode.IdOrigineFormation == 1)
                                                                .Select(mode => new OrigineFormationDTO { Id = mode.IdOrigineFormation, Libelle = mode.Libelle }).FirstOrDefault();
            FormationDTO formation = await formationService.GetFormationByIdAsync(idFormation);

            formation.Intitule = nouvelleIntitule;
            formation.Mode = modeExterne;
            formation.Type = typeELearning;
            formation.Origine = origineFormationCollaborateur;
            formation.Statut = statutPlanifie;

            // Act
            var okObjectResult = formationsApiController.UpdateFormation(formation, idFormation);

            // Assert
            Assert.IsInstanceOf<OkObjectResult>(okObjectResult.Result);
        }

        [Test]
        public async Task UpdateFormation_ModifieUneFormationValide_RetourneLaFormationModifiee()
        {
            // Arrange
            long idFormation = 1;
            string nouvelleIntitule = "Formation modifiée";
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            ModeFormationDTO modeExterne = epContext.ModeFormation.Where(mode => mode.IdModeFormation == 2)
                                                                .Select(mode => new ModeFormationDTO { Id = mode.IdModeFormation, Libelle = mode.Libelle }).FirstOrDefault();
            StatutFormationDTO statutPlanifie = epContext.StatutFormation.Where(mode => mode.IdStatutFormation == 2)
                                                                .Select(mode => new StatutFormationDTO { Id = mode.IdStatutFormation, Libelle = mode.Libelle }).FirstOrDefault();
            TypeFormationDTO typeELearning = epContext.TypeFormation.Where(mode => mode.IdTypeFormation == 1)
                                                                .Select(mode => new TypeFormationDTO { Id = mode.IdTypeFormation, Libelle = mode.Libelle }).FirstOrDefault();
            OrigineFormationDTO origineFormationCollaborateur = epContext.OrigineFormation.Where(mode => mode.IdOrigineFormation == 1)
                                                                .Select(mode => new OrigineFormationDTO { Id = mode.IdOrigineFormation, Libelle = mode.Libelle }).FirstOrDefault();
            FormationDTO formation = await formationService.GetFormationByIdAsync(idFormation);

            formation.Intitule = nouvelleIntitule;
            formation.Mode = modeExterne;
            formation.Type = typeELearning;
            formation.Origine = origineFormationCollaborateur;
            formation.Statut = statutPlanifie;

            // Act
            var okObjectResult =  formationsApiController.UpdateFormation(formation, idFormation).Result as OkObjectResult;

            // Assert
            Assert.IsInstanceOf<FormationDTO>(okObjectResult.Value);
            Assert.AreEqual(nouvelleIntitule, (okObjectResult.Value as FormationDTO).Intitule);
        }

        #endregion

        #region Tests DeleteFormationById

        [Test]
        public void DeleteFormation_PasseEnParamUnIdFormationInexistant_RetourneUnObjetNotFoundObjectResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            int idFormation = 999;

            // Act
            var notFoundObjectResult = formationsApiController.DeleteFormation(idFormation);

            // Assert
            Assert.IsInstanceOf<NotFoundObjectResult>(notFoundObjectResult.Result);
        }

        [Test]
        public void DeleteFormation_PasseEnParamUnIdFormationExistant_RetourneUnObjetNoContentResult()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            int idFormation = 1;

            // Act
            var noContentResult = formationsApiController.DeleteFormation(idFormation);

            // Assert
            Assert.IsInstanceOf<NoContentResult>(noContentResult.Result);
        }

        [Test]
        public async Task DeleteFormation_PasseEnParamUnIdFormationExistant_SupprimeBienUneFormation()
        {
            // Arrange
            FormationsApiController formationsApiController = new FormationsApiController(formationService, new NullLogger<FormationsApiController>(), mockEnvironment.Object);
            int idFormation = 1;
            long nbFormationAvantSuppression = await formationService.GetFormationsCountAsync(null, null, null, null, null, null, null);

            // Act
            var noContentResult = formationsApiController.DeleteFormation(idFormation).Result as NoContentResult;

            // Assert
            long nbFormationApresSuppression = await formationService.GetFormationsCountAsync(null, null, null, null, null, null, null);

            Assert.AreEqual(nbFormationAvantSuppression -1, nbFormationApresSuppression);
        }


        #endregion
    }
}