using ManagerService.Controllers;
using ManagerService.Data;
using ManagerService.Data.SubSection;
using ManagerService.DTOs;
using ManagerService.Tests.Infrastructure;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging.Abstractions;
using System;
using System.Collections.Generic;
using System.Linq;
using Xunit;

namespace ManagerService.Tests.Controllers
{
    public class SectionAgendaControllerTests
    {
        private SectionAgendaController BuildController(MyInfoMateDbContext db)
        {
            var cfg = new ConfigurationBuilder().Build();
            return new SectionAgendaController(cfg, NullLogger<SectionAgendaController>.Instance, db);
        }

        private SectionAgenda MakeSection(MyInfoMateDbContext db, string id = "sa1")
        {
            var section = new SectionAgenda
            {
                Id = id,
                Label = "Agenda test",
                Title = new List<TranslationDTO>(),
                Description = new List<TranslationDTO>(),
                ConfigurationId = "conf1",
                InstanceId = "inst1",
                Type = SectionType.Agenda,
                AgendaResourceIds = new List<TranslationDTO>(),
                EventAgendas = new List<EventAgenda>()
            };
            db.Sections.Add(section);
            return section;
        }

        private EventAgenda MakeEvent(string sectionId, DateTime? dateFrom)
        {
            return new EventAgenda
            {
                Label = new List<TranslationDTO>(),
                Description = new List<TranslationDTO>(),
                SectionAgendaId = sectionId,
                DateFrom = dateFrom
            };
        }

        // ── GET ALL ──────────────────────────────────────────────────────────

        [Fact]
        public void GetAllEventAgendaFromSection_UnknownSection_Returns404()
        {
            using var db = DbContextFactory.Create();

            var result = BuildController(db).GetAllEventAgendaFromSection("unknown");

            Assert.IsType<NotFoundObjectResult>(result);
        }

        [Fact]
        public void GetAllEventAgendaFromSection_ReturnsAllEvents()
        {
            using var db = DbContextFactory.Create();
            MakeSection(db);
            db.EventAgendas.Add(MakeEvent("sa1", DateTime.Today.AddDays(-5)));
            db.EventAgendas.Add(MakeEvent("sa1", DateTime.Today.AddDays(5)));
            db.SaveChanges();

            var result = BuildController(db).GetAllEventAgendaFromSection("sa1");

            var ok = Assert.IsType<OkObjectResult>(result);
            var events = Assert.IsAssignableFrom<IEnumerable<EventAgendaDTO>>(ok.Value);
            Assert.Equal(2, events.Count());
        }

        // ── GET UPCOMING ─────────────────────────────────────────────────────

        [Fact]
        public void GetUpcomingEventAgendas_FiltersOutPastEvents()
        {
            using var db = DbContextFactory.Create();
            MakeSection(db);
            db.EventAgendas.Add(MakeEvent("sa1", DateTime.Today.AddDays(-1))); // passé → filtré
            db.EventAgendas.Add(MakeEvent("sa1", DateTime.Today));             // aujourd'hui → inclus
            db.EventAgendas.Add(MakeEvent("sa1", DateTime.Today.AddDays(1)));  // futur → inclus
            db.SaveChanges();

            var result = BuildController(db).GetUpcomingEventAgendas("sa1");

            var ok = Assert.IsType<OkObjectResult>(result);
            var events = Assert.IsAssignableFrom<IEnumerable<EventAgendaDTO>>(ok.Value);
            Assert.Equal(2, events.Count());
        }

        [Fact]
        public void GetUpcomingEventAgendas_NullDateFrom_IsIncluded()
        {
            using var db = DbContextFactory.Create();
            MakeSection(db);
            db.EventAgendas.Add(MakeEvent("sa1", null));                       // sans date → inclus
            db.EventAgendas.Add(MakeEvent("sa1", DateTime.Today.AddDays(-1))); // passé → filtré
            db.SaveChanges();

            var result = BuildController(db).GetUpcomingEventAgendas("sa1");

            var ok = Assert.IsType<OkObjectResult>(result);
            var events = Assert.IsAssignableFrom<IEnumerable<EventAgendaDTO>>(ok.Value);
            Assert.Equal(1, events.Count());
        }

        [Fact]
        public void GetUpcomingEventAgendas_UnknownSection_Returns404()
        {
            using var db = DbContextFactory.Create();

            var result = BuildController(db).GetUpcomingEventAgendas("unknown");

            Assert.IsType<NotFoundObjectResult>(result);
        }

        // ── CREATE ───────────────────────────────────────────────────────────

        [Fact]
        public void CreateEventAgenda_ValidDto_Persists()
        {
            using var db = DbContextFactory.Create();
            MakeSection(db);
            db.SaveChanges();

            var dto = new EventAgendaDTO
            {
                label = new List<TranslationDTO>(),
                description = new List<TranslationDTO>(),
                sectionAgendaId = "sa1"
            };

            var result = BuildController(db).CreateEventAgenda("sa1", dto);

            Assert.IsType<OkObjectResult>(result);
            Assert.Equal(1, db.EventAgendas.Count());
        }

        [Fact]
        public void CreateEventAgenda_UnknownSection_Returns500()
        {
            using var db = DbContextFactory.Create();
            var dto = new EventAgendaDTO
            {
                label = new List<TranslationDTO>(),
                description = new List<TranslationDTO>(),
                sectionAgendaId = "unknown"
            };

            // La section n'existe pas → KeyNotFoundException → ObjectResult 500
            var result = BuildController(db).CreateEventAgenda("unknown", dto);

            var status = Assert.IsType<ObjectResult>(result);
            Assert.Equal(500, status.StatusCode);
        }

        // ── DELETE ───────────────────────────────────────────────────────────

        [Fact]
        public void DeleteEventAgenda_ExistingEvent_Returns202()
        {
            using var db = DbContextFactory.Create();
            MakeSection(db);
            var ev = MakeEvent("sa1", null);
            db.EventAgendas.Add(ev);
            db.SaveChanges();
            var id = ev.Id;

            var result = BuildController(db).DeleteEventAgenda(id);

            var status = Assert.IsType<ObjectResult>(result);
            Assert.Equal(202, status.StatusCode);
            Assert.Equal(0, db.EventAgendas.Count());
        }

        [Fact]
        public void DeleteEventAgenda_UnknownId_Returns404()
        {
            using var db = DbContextFactory.Create();

            var result = BuildController(db).DeleteEventAgenda(9999);

            Assert.IsType<NotFoundObjectResult>(result);
        }
    }
}