using SushiContracts.BindingModels;
using SushiContracts.SearchModels;
using SushiContracts.StorageContracts;
using SushiContracts.ViewModels;
using SushiDatabaseImplement.Models;
using SushiDatabaseImplement;

namespace SushiDatabaseImplement.Implements
{
    public class ClientStorage : IClientStorage
    {
        public List<ClientViewModel> GetFullList()
        {
            using var context = new SushiDatabase();
            return context.Clients.Select(x => x.GetViewModel).ToList();
        }

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

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

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

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

        public ClientViewModel? Delete(ClientBindingModel model)
        {
            using var context = new SushiDatabase();
            var element = context.Clients.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null) 
            {
                context.Clients.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}