using BeautySalonContracts.BindingModels;
using BeautySalonContracts.SearchModels;
using BeautySalonContracts.StoragesContracts;
using BeautySalonContracts.ViewModels;
using BeautySalonDatabaseImplement.Models;

namespace BeautySalonDatabaseImplement.Implements
{
    public class ClientStorage : IClientStorage
    {
        public ClientViewModel? Delete(ClientBindingModel model)
        {
            using var context = new BeautySalonDatabase();
            var element = context.Clients.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Clients.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }

        public ClientViewModel? GetElement(ClientSearchModel model)
        {
            if (string.IsNullOrEmpty(model.PhoneNumber) && !model.Id.HasValue)
            {
                return null;
            }
            using var context = new BeautySalonDatabase();
            return context.Clients.FirstOrDefault(x => (!string.IsNullOrEmpty(model.PhoneNumber) && x.PhoneNumber == model.PhoneNumber) ||
            (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
        }

        public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
        {
            if (string.IsNullOrEmpty(model.PhoneNumber))
            {
                return new();
            }
            using var context = new BeautySalonDatabase();
            return context.Clients
            .Where(x => x.PhoneNumber.Equals(model.PhoneNumber))
           .Select(x => x.GetViewModel)
           .ToList();
        }

        public List<ClientViewModel> GetFullList()
        {
            using var context = new BeautySalonDatabase();
            return context.Clients
            .Select(x => x.GetViewModel)
           .ToList();
        }

        public ClientViewModel? Insert(ClientBindingModel model)
        {
            var newClient = Client.Create(model);
            if (newClient == null)
            {
                return null;
            }
            using var context = new BeautySalonDatabase();
            context.Clients.Add(newClient);
            context.SaveChanges();
            return newClient.GetViewModel;
        }

        public ClientViewModel? Update(ClientBindingModel model)
        {
            using var context = new BeautySalonDatabase();
            var client = context.Clients.FirstOrDefault(x => x.Id == model.Id);
            if (client == null)
            {
                return null;
            }
            client.Update(model);
            context.SaveChanges();
            return client.GetViewModel;
        }
    }
}