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

namespace DeviceBusinessLogic.BusinessLogics
{
    public class ServiceLogic : IServiceLogic
    {
        private readonly ILogger _logger;
        private readonly IServiceStorage _serviceStorage;
        public ServiceLogic(ILogger<ServiceLogic> logger,
            IServiceStorage serviceStorage)
        {
            _logger = logger;
            _serviceStorage = serviceStorage;
        }
        public bool Create(ServiceBindingModel model)
        {
            CheckModel(model);
            if (_serviceStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }
        public bool Update(ServiceBindingModel model)
        {
            CheckModel(model);
            if (_serviceStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }
        public bool Delete(ServiceBindingModel model)
        {
            CheckModel(model, false);
            _logger.LogInformation("Delete. Id: {Id}", model.Id);
            if (_serviceStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }
            return true;
        }
        public List<ServiceViewModel>? ReadList(ServiceSearchModel? model)
        {
            _logger.LogInformation(
                "ReadList. Id: {Id}, Description: {Description}, StartDate: " +
                "{StartDate}, EndDate: {EndDate}, DeviceId: {DeviceId}.", 
                model?.Id, model?.Description, model?.StartDate, 
                model?.EndDate, model?.DeviceId);
            var list = model == null ? _serviceStorage.GetFullList() :
                _serviceStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
            return list;
        }
        public ServiceViewModel? ReadElement(ServiceSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation(
                "ReadElement. Id: {Id}, Description: {Description}, " +
                "StartDate: {StartDate}, EndDate: " +
                "{EndDate}, DeviceId: {DeviceId}.",
                model?.Id, model?.Description, model?.StartDate,
                model?.EndDate, model?.DeviceId);
            var element = _serviceStorage.GetElement(model);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. Id: {Id}",
                element.Id);
            return element;
        }
        private void CheckModel(ServiceBindingModel model,
            bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (model.Id <= 0)
            {
                throw new ArgumentNullException(
                    "Идентификатор должен быть больше 0",
                    nameof(model.Id));
            }
            if (string.IsNullOrEmpty(model.Description))
            {
                throw new ArgumentNullException(
                    "Отсутствует описание",
                    nameof(model.Description));
            }
            if (model.DeviceId <= 0)
            {
                throw new ArgumentNullException(
                    "Идентификатор устройства должен быть больше 0",
                    nameof(model.Id));
            }
            _logger.LogInformation(
                "Id: {Id}, Description: {Description}, " +
                "StartDate: {StartDate}, EndDate: " +
                "{EndDate}, DeviceId: {DeviceId}.",
                model?.Id, model?.Description, model?.StartDate,
                model?.EndDate, model?.DeviceId);
            var elementByDescription = _serviceStorage.GetElement(
                new ServiceSearchModel
                {
                    Description = model.Description,
                });
            var elementByDeviceId = _serviceStorage.GetElement(
                new ServiceSearchModel
                {
                    DeviceId = model.DeviceId,
                });
            var elementByStartDate = _serviceStorage.GetElement(
                new ServiceSearchModel
                {
                    StartDate = model.StartDate,
                });
            var elementByEndDate = _serviceStorage.GetElement(
                new ServiceSearchModel
                {
                    EndDate = model.EndDate,
                });
        }
    }
}