using AutoMapper;
using Diligent.WebAPI.Business.MappingProfiles;
using Diligent.WebAPI.Business.Services;
using Diligent.WebAPI.Contracts.DTOs.Ad;
using Diligent.WebAPI.Contracts.DTOs.Applicant;
using Diligent.WebAPI.Contracts.DTOs.SelectionLevel;
using Diligent.WebAPI.Contracts.Exceptions;
using Diligent.WebAPI.Data.Entities;
using Microsoft.Extensions.Logging;

namespace Diligent.WebAPI.Tests.Services
{
    public class SelectionLevelsServiceTests
    {
        private readonly IMapper _mapper;
        private readonly List<SelectionLevel> _levels;
        private ILogger<SelectionLevelService> _logger = Substitute.For<ILogger<SelectionLevelService>>();
        private readonly SelectionLevel _selectionLevel;
        public SelectionLevelsServiceTests()
        {
            _selectionLevel = new SelectionLevel
            {
                Id = 1,
                Name = "HR intervju",
                SelectionProcesses = new List<SelectionProcess>()
            };

            // configure mapper
            var configuration = new MapperConfiguration(cfg => cfg.AddProfiles(
                new List<Profile>
            {
                new SelectionLevelMappingProfile(),
                new SelectionProcessMappingProfile(),
            }));
            _mapper = new Mapper(configuration);
        }

        [Fact]
        public async Task GetAll_ShouldReturnListOfLevels_Always()
        {
            var databaseContext = await Helpers<SelectionLevel>.GetDatabaseContext(_levels);
            SelectionLevelService service = new(databaseContext, _mapper, _logger);

            var result = await service.GetAllAsync();

            result.Should().HaveCount(4);
        }

        [Fact]
        public async Task GetFilteredData_ShouldReturnListOfLevels_Always()
        {
            var databaseContext = await Helpers<SelectionLevel>.GetDatabaseContext(_levels);
            databaseContext.SelectionLevels.First().SelectionProcesses = new List<SelectionProcess>
            { 
                new SelectionProcess{ Id = 1, Status = "Obrađen", Date = DateTime.Now},
                new SelectionProcess{ Id = 2, Status = "Obrađen", Date = DateTime.Now.AddMonths(-1)},
                new SelectionProcess{ Id = 3, Status = "Čeka na zakazivanje", Date = DateTime.Now},
                new SelectionProcess{ Id = 4, Status = "Čeka na zakazivanje", Date = DateTime.Now.AddMonths(-1)},
            };

            SelectionLevelService service = new(databaseContext, _mapper, _logger);
            var filter = new SelectionProcessFilterDto
            { 
                DateStart = DateTime.Now.AddDays(-1),
                DateEnd = DateTime.Now.AddDays(1),
                Statuses = new string[]{ "Obrađen", "Zakazan" }
            };

            var result = service.GetFilteredLevelsAsync(filter);

            result.Should().HaveCount(4);
            result.First().SelectionProcesses.Should().HaveCount(1);
        }

        [Fact]
        public async Task GetById_ShouldReturnLevel_WhenLevelExist()
        {
            var databaseContext = await Helpers<SelectionLevel>.GetDatabaseContext(_levels);
            SelectionLevelService service = new(databaseContext, _mapper, _logger);

            var result = await service.GetByIdAsync(1);

            result.Should().BeEquivalentTo(_mapper.Map<SelectionLevelResposneDto>(_selectionLevel));
        }

        [Fact]
        public async Task GetById_ShouldThrowEntityNotFooundException_WhenLevelDoesnotExist()
        {
            var databaseContext = await Helpers<SelectionLevel>.GetDatabaseContext(_levels);
            SelectionLevelService service = new(databaseContext, _mapper, _logger);

            await Assert.ThrowsAsync<EntityNotFoundException>(async () => await service.GetByIdAsync(1000));
        }

        [Fact]
        public async Task GetByIdEntity_ShouldReturnLevel_WhenLevelExist()
        {
            var databaseContext = await Helpers<SelectionLevel>.GetDatabaseContext(_levels);
            SelectionLevelService service = new(databaseContext, _mapper, _logger);

            var result = await service.GetByIdEntity(1);

            result.Id.Should().Be(_selectionLevel.Id);
            result.Name.Should().Be(_selectionLevel.Name);
        }
        [Fact]
        public async Task GetByIdEntity_ShouldThrowEntityNotFooundException_WhenLevelDoesnotExist()
        {
            var databaseContext = await Helpers<SelectionLevel>.GetDatabaseContext(_levels);
            SelectionLevelService service = new(databaseContext, _mapper, _logger);

            await Assert.ThrowsAsync<EntityNotFoundException>(async () => await service.GetByIdEntity(1000));
        }

        [Fact]
        public async Task GetCountByLevels_ShouldReturnListOfLevels_Always()
        {
            var databaseContext = await Helpers<SelectionLevel>.GetDatabaseContext(_levels);
            databaseContext.SelectionLevels.First().SelectionProcesses = new List<SelectionProcess>
            {
                new SelectionProcess{ Id = 1, Status = "Obrađen", Date = DateTime.Now},
                new SelectionProcess{ Id = 2, Status = "Zakazan", Date = DateTime.Now.AddMonths(-1)},
                new SelectionProcess{ Id = 3, Status = "Čeka na zakazivanje", Date = DateTime.Now},
                new SelectionProcess{ Id = 4, Status = "Čeka na zakazivanje", Date = DateTime.Now.AddMonths(-1)},
            };

            SelectionLevelService service = new(databaseContext, _mapper, _logger);
            var statues = new List<string> { "Obrađen", "Zakazan" };
            

            var result = await service.GetCountByLevels(statues);

            result.Should().HaveCount(4);
            result.First().CountAll.Should().Be(4);
            result.First().CountDone.Should().Be(2);
        }
    }
}