using TransportCompanyContracts.BindingModels;
using TransportCompanyContracts.SearchModels;
using TransportCompanyContracts.StoragesContracts;
using TransportCompanyContracts.ViewModels;
using TransportCompanyDatabaseImplement.Models;

namespace TransportCompanyDatabaseImplement.Implements
{
    public class DriverStorage : IDriverStorage
    {
        public List<DriverViewModel> GetFullList()
        {
            using var context = new TransportCompanyDatabase();
            return context.Drivers.Select(x => x.GetViewModel).ToList();
        }

        public List<DriverViewModel> GetFilteredList(DriverSearchModel model)
        {
            if (string.IsNullOrEmpty(model.DriverFio))
            {
                return new();
            }
            using var context = new TransportCompanyDatabase();
            return context.Drivers.Where(x => x.DriverFio.Contains(model.DriverFio)).Select(x => x.GetViewModel).ToList();
        }

        public DriverViewModel? GetElement(DriverSearchModel model)
        {
            if (string.IsNullOrEmpty(model.DriverFio) && !model.Id.HasValue)
            {
                return null;
            }
            using var context = new TransportCompanyDatabase();
            return context.Drivers.FirstOrDefault(x =>
            (!string.IsNullOrEmpty(model.DriverFio) && x.DriverFio == model.DriverFio) ||
            (model.Id.HasValue && x.Id == model.Id))
                ?.GetViewModel;
        }

        public DriverViewModel? Insert(DriverBindingModel model)
        {
            var newComponent = Driver.Create(model);
            if (newComponent == null)
            {
                return null;
            }
            using var context = new TransportCompanyDatabase();
            context.Drivers.Add(newComponent);
            context.SaveChanges();
            return newComponent.GetViewModel;
        }

        public DriverViewModel? Update(DriverBindingModel model)
        {
            using var context = new TransportCompanyDatabase();
            var component = context.Drivers.FirstOrDefault(x => x.Id == model.Id);
            if (component == null)
            {
                return null;
            }
            component.Update(model);
            context.SaveChanges();
            return component.GetViewModel;
        }

        public DriverViewModel? Delete(DriverBindingModel model)
        {
            using var context = new TransportCompanyDatabase();
            var element = context.Drivers.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Drivers.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}