using Microsoft.Extensions.Logging;
using RouteGuideContracts.BindingModels;
using RouteGuideContracts.BusinessLogicContracts;
using RouteGuideContracts.SearchModels;
using RouteGuideContracts.StoragesModels;
using RouteGuideContracts.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace RouteGuideBusinessLogic.BusinessLogic
{
    public class TransportLogic : ITransportLogic
    {
        private readonly ILogger _logger;
        private readonly ITransportStorage _transportStorage;

        public TransportLogic(ILogger<TransportLogic> logger, ITransportStorage transportStorage)
        {
            _logger = logger;
            _transportStorage = transportStorage;
        }

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

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

        public TransportViewModel? ReadElement(TransportSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. DriverName:{DriverName}.Id:{ Id}", model.DriverName, model.Id);
            var element = _transportStorage.GetElement(model);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
            return element;
        }

        public List<TransportViewModel>? ReadList(TransportSearchModel? model)
        {
            _logger.LogInformation("ReadList. DriverName:{DriverName}.Id:{ Id}", model?.DriverName, model?.Id);
            var list = model == null ? _transportStorage.GetFullList() : _transportStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }

        public bool Update(TransportBindingModel model)
        {
            CheckModel(model);
            if (_transportStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }
        private void CheckModel(TransportBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.DriverName))
            {
                throw new ArgumentNullException("Нет водителя ", nameof(model.DriverName));
            }
            _logger.LogInformation("Transport. DriverName:{DriverName}. TransportTypeId:{ TransportTypeId}. Id: { Id}", model.DriverName, model.TransportTypeId, model.Id);
            var element = _transportStorage.GetElement(new TransportSearchModel
            {
                DriverName = model.DriverName
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Transport с таким названием уже есть");
            }
        }
    }
}