using ConfectioneryContracts.BindingModels;
using ConfectioneryContracts.SearchModels;
using ConfectioneryContracts.StoragesContracts;
using ConfectioneryContracts.ViewModels;
using ConfectioneryDatabaseImplement.Models;
namespace ConfectioneryDatabaseImplement.Implements
{
    public class ClientStorage : IClientStorage
    {
        public List<ClientViewModel> GetFullList()
        {
            using var context = new ConfectioneryDatabase();
            return context.Clients
            .Select(x => x.GetViewModel)
           .ToList();
        }
        public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
        {
            if (string.IsNullOrEmpty(model.ClientFIO) && 
                string.IsNullOrEmpty(model.Email) && 
                string.IsNullOrEmpty(model.Password))
            {
                return new();
            }
            using var context = new ConfectioneryDatabase();
            return context.Clients
                .Where(x => (string.IsNullOrEmpty(model.ClientFIO) || 
                x.ClientFIO.Contains(model.ClientFIO) &&
                (string.IsNullOrEmpty(model.Email) || 
                x.Email.Contains(model.Email)) && 
                (string.IsNullOrEmpty(model.Password) || 
                x.Password.Contains(model.Password))))
            .Select(x => x.GetViewModel)
            .ToList();
        }
        public ClientViewModel? GetElement(ClientSearchModel model)
        {
            if (string.IsNullOrEmpty(model.ClientFIO) && 
                string.IsNullOrEmpty(model.Email) && !model.Id.HasValue)
            {
                return null;
            }
            using var context = new ConfectioneryDatabase();
            return context.Clients
                .FirstOrDefault(x => (string.IsNullOrEmpty(model.ClientFIO) || 
                x.ClientFIO == model.ClientFIO) && 
                (!model.Id.HasValue || x.Id == model.Id) && 
                (string.IsNullOrEmpty(model.Email) || 
                x.Email == model.Email) && 
                (string.IsNullOrEmpty(model.Password) || 
                x.Password == model.Password))
            ?.GetViewModel;
        }
        public ClientViewModel? Insert(ClientBindingModel model)
        {
            var newClient = Client.Create(model);
            if (newClient == null)
            {
                return null;
            }
            using var context = new ConfectioneryDatabase();
            context.Clients.Add(newClient);
            context.SaveChanges();
            return newClient.GetViewModel;
        }
        public ClientViewModel? Update(ClientBindingModel model)
        {
            using var context = new ConfectioneryDatabase();
            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 ConfectioneryDatabase();
            var element = context.Clients.FirstOrDefault(
                rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Clients.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}