using SushiBarContracts.BindingModel;
using SushiBarContracts.SearchModel;
using SushiBarContracts.StoragesContracts;
using SushiBarContracts.ViewModels;
using SushiBarDatabaseImplement.Models;

namespace SushiBarDatabaseImplement.Implements
{
    public class OrderStorage : IOrderStorage
    {
        public List<OrderViewModel> GetFullList()
        {
            using var context = new SushiBarDatabase();
            return context.Orders.Select(x => AccessViewModel(x.GetViewModel)).ToList();
        }

        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
        {
            if (!model.Id.HasValue && !model.DateTo.HasValue && !model.DateFrom.HasValue && !model.ClientId.HasValue)
            {
                return new();
            }
            using var context = new SushiBarDatabase();
            if (model.Id.HasValue)
                return context.Orders.Where(x => x.Id == model.Id).Select(x => AccessViewModel(x.GetViewModel)).ToList();
            if (model.ClientId.HasValue)
                return context.Orders.Where(x => x.ClientId == model.ClientId).Select(x => AccessViewModel(x.GetViewModel)).ToList();
            else
                return context.Orders.Where(x => x.DateCreate >= model.DateFrom).Where(x => x.DateCreate <= model.DateTo).Select(x => AccessViewModel(x.GetViewModel)).ToList();
        }
        public OrderViewModel? GetElement(OrderSearchModel model)
        {
            if (!model.Id.HasValue)
            {
                return null;
            }
            using var context = new SushiBarDatabase();
            return AccessViewModel(context.Orders.FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id).GetViewModel);
        }
        public OrderViewModel? Insert(OrderBindingModel model)
        {
            using var context = new SushiBarDatabase();
            var newOrder = Order.Create(model);
            if (newOrder == null)
            {
                return null;
            }
            context.Orders.Add(newOrder);
            context.SaveChanges();
            return AccessViewModel(newOrder.GetViewModel);
        }
        public OrderViewModel? Update(OrderBindingModel model)
        {
            using var context = new SushiBarDatabase();
            var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
            if (order == null)
            {
                return null;
            }
            order.Update(model);
            context.SaveChanges();
            return AccessViewModel(order.GetViewModel);
        }
        public OrderViewModel? Delete(OrderBindingModel model)
        {
            using var context = new SushiBarDatabase();
            var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
            if (order == null) return null;
            context.Remove(order);
            context.SaveChanges();
            return AccessViewModel(order.GetViewModel);
        }
        public static OrderViewModel? AccessViewModel(OrderViewModel viewModel)
        {
            using var context = new SushiBarDatabase();

            if (viewModel != null)
            {
                foreach (var sushi in context.Sushis)
                {
                    if(sushi.Id == viewModel.Id)
                    {
                        viewModel.SushiName = sushi.SushiName;
                        break;
                    } 
                }

                foreach (var client in context.Clients)
                {
                    if(client.Id == viewModel.ClientId)
                    {
                        viewModel.ClientFIO = client.ClientFIO;
                        return viewModel;
                    }
                }
            }
            return null;
        }
    }
}