using PortalAccountsContracts.BindingModels;
using PortalAccountsContracts.SearchModels;
using PortalAccountsContracts.StoragesContracts;
using PortalAccountsContracts.ViewModels;
using PortalAccountsDatabaseImplement.Models;

namespace PortalAccountsDatabaseImplement.Implements
{
    public class InterestStorage : IInterestStorage
    {
        public List<InterestViewModel> GetFullList()
        {
            using var context = new PortalAccountsDatabase();
            return context.Interests
                    .Select(x => x.GetViewModel)
                    .ToList();
        }

        public List<InterestViewModel> GetFilteredList(InterestSearchModel model)
        {
            if (string.IsNullOrEmpty(model.Name))
            {
                return new();
            }
            using var context = new PortalAccountsDatabase();
            return context.Interests
                    .Where(x => x.Name.Contains(model.Name))
                    .Select(x => x.GetViewModel)
                    .ToList();
        }

        public InterestViewModel? GetElement(InterestSearchModel model)
        {
            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
            {
                return null;
            }
            using var context = new PortalAccountsDatabase();
            return context.Interests
                    .FirstOrDefault(x => !string.IsNullOrEmpty(model.Name) && x.Name == model.Name ||
                                    model.Id.HasValue && x.Id == model.Id)
                    ?.GetViewModel;
        }

        public InterestViewModel? Insert(InterestBindingModel model)
        {
            var newInterest = Interest.Create(model);
            if (newInterest == null)
            {
                return null;
            }
            using var context = new PortalAccountsDatabase();
            context.Interests.Add(newInterest);
            context.SaveChanges();
            return newInterest.GetViewModel;
        }

        public InterestViewModel? Update(InterestBindingModel model)
        {
            using var context = new PortalAccountsDatabase();
            var interest = context.Interests.FirstOrDefault(x => x.Id == model.Id);
            if (interest == null)
            {
                return null;
            }
            interest.Update(model);
            context.SaveChanges();
            return interest.GetViewModel;
        }

        public InterestViewModel? Delete(InterestBindingModel model)
        {
            using var context = new PortalAccountsDatabase();
            var element = context.Interests.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Interests.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}