using Microsoft.Extensions.Logging;
using TravelAgencyContracts.BindingModels;
using TravelAgencyContracts.BusinessLogicsContracts;
using TravelAgencyContracts.SearchModels;
using TravelAgencyContracts.StoragesContracts;
using TravelAgencyContracts.ViewModels;

namespace TravelAgencyBusinessLogic.BusinessLogics
{
    public class PlaceLogic : IPlaceLogic
    {
        private readonly ILogger _logger;

        private readonly IPlaceStorage _placeStorage;

        public PlaceLogic(ILogger<PlaceLogic> logger, IPlaceStorage placeStorage)
        {
            _logger = logger;
            _placeStorage = placeStorage;
        }

        public List<PlaceViewModel>? ReadList(PlaceSearchModel? model)
        {
            _logger.LogInformation("ReadList. Id: {Id}, PlaceName: {PlaceName}, ExcursionId: {ExcursionId}.", model?.Id, model?.PlaceName, model?.ExcursionId);
            var list = (model == null) ? _placeStorage.GetFullList() : _placeStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
            return list;
        }

        public PlaceViewModel? ReadElement(PlaceSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. Place id: {Id}, Place name: {PlaceName}, Place address: {PlaceAddress}", model?.Id, model?.PlaceName, model?.PlaceAddress);
            var element = _placeStorage.GetElement(model!);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. Id: {Id}", element.Id);
            return element;
        }

        public bool Create(PlaceBindingModel model)
        {
            CheckModel(model);
            if (_placeStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }

        public bool Update(PlaceBindingModel model)
        {
            CheckModel(model);
            if (_placeStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }

        public bool Delete(PlaceBindingModel model)
        {
            CheckModel(model, false);
            _logger.LogInformation("Delete. Id: {Id}", model.Id);
            if (_placeStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }
            return true;
        }

        private void CheckModel(PlaceBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.PlaceName))
            {
                throw new ArgumentNullException("Нет названия места", nameof(model.PlaceName));
            }
            if (string.IsNullOrEmpty(model.PlaceAddress))
            {
                throw new ArgumentNullException("Нет адреса места", nameof(model.PlaceAddress));
            }
            if (model.ExcursionId <= 0)
            {
                throw new ArgumentNullException("Некорректный идентификатор экскурсии", nameof(model.ExcursionId));
            }
            _logger.LogInformation("Place. Id: {id}, PlaceName: {PlaceName}, PlaceAddress: {PlaceAddress}, ExcursionId: {ExcursionId}", model.Id, model.PlaceName, model.PlaceAddress, model.ExcursionId);
            var element = _placeStorage.GetElement(new PlaceSearchModel
            {
                PlaceName = model.PlaceName,
                PlaceAddress = model.PlaceAddress
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Место с таким названием или адресом уже есть");
            }
        }
}