using System;
using System.Collections.Generic;
using System.Linq;
using BarContracts.BindingModels;
using BarContracts.SearchModels;
using BarContracts.ViewModels;
using BarContracts.StoragesContracts;
using BarDatabaseImplement.Models;
using System.Text;
using System.Threading.Tasks;


namespace BarDatabaseImplement.Implements
{
    public class OrderStorage : IOrderStorage
    {
        public List<OrderViewModel?> GetFullList()
        {
            using var context = new BarDatabase();
            return context.Orders.Select(x => AcessCocktailsStorage(x.GetViewModel)).ToList();
        }
        public List<OrderViewModel?> GetFilteredList(OrderSearchModel model)
        {
            if (!model.Id.HasValue)
            {
                return new();
            }
            using var context = new BarDatabase();
            return context.Orders.Where(x => x.Id == model.Id).Select(x => AcessCocktailsStorage(x.GetViewModel)).ToList();
        }
        public OrderViewModel? GetElement(OrderSearchModel model)
        {
            if (!model.Id.HasValue)
            {
                return null;
            }
            using var context = new BarDatabase();
            return AcessCocktailsStorage(context.Orders.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel);
        }
        public OrderViewModel? Insert(OrderBindingModel model)
        {
            var order = Order.Create(model);
            if (order == null)
            {
                return null;
            }
            using var context = new BarDatabase();
            context.Orders.Add(order);
            context.SaveChanges();
            return AcessCocktailsStorage(order.GetViewModel);

        }
        public OrderViewModel? Update(OrderBindingModel model)
        {

            using var context = new BarDatabase();
            var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
            if (order == null)
            {
                return null;
            }
            order.Update(model);
            context.SaveChanges();
            return AcessCocktailsStorage(order.GetViewModel);

        }
        public OrderViewModel? Delete(OrderBindingModel model)
        {
            using var context = new BarDatabase();
            var element = context.Orders.FirstOrDefault(x => x.Id == model.Id);
            if (element == null)
            {
                return null;
            }
            context.Orders.Remove(element);
            context.SaveChanges();
            return AcessCocktailsStorage(element.GetViewModel);
        }
        public static OrderViewModel? AcessCocktailsStorage(OrderViewModel? model)
        {
            if (model == null)
            {
                return null;
            }
            using var context = new BarDatabase();
            foreach (var cocktail in context.Cocktails)
            {
                if (cocktail.Id == model.CocktailId)
                {
                    model.CocktailName = cocktail.CocktailName;
                    break;
                }
            }
            return model;
        }
    }
}