using FlowerShopContracts.StoragesContracts;
using FlowerShopContracts.BindingModels;
using FlowerShopContracts.SearchModels;
using FlowerShopContracts.ViewModels;
using FlowerShopDatabaseImplement.Models;

using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FlowerShopDatabaseImplement.Implements
{
    public class OrderStorage : IOrderStorage
    {
        public List<OrderViewModel> GetFullList()
        {
            using var context = new FlowerShopDataBase();
            return context.Orders.Include(x => x.Flower).
            Include(x => x.Client).Include(x => x.Implementer).Select(x => x.GetViewModel)
		   .ToList();
        }
        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
        {
            using var context = new FlowerShopDataBase();
            return context.Orders.Include(x => x.Flower)
            .Where(x => ((!model.Id.HasValue || x.Id == model.Id) &&
                        (!model.DateFrom.HasValue || x.DateCreate >= model.DateFrom) &&
                        (!model.DateTo.HasValue || x.DateCreate <= model.DateTo) &&
						(!model.ClientId.HasValue || x.ClientId == model.ClientId)&&
                        (!model.Status.HasValue || x.Status == model.Status)
                        ))
           .Select(x => x.GetViewModel)
           .ToList();
        }
        public OrderViewModel? GetElement(OrderSearchModel model)
        {
           
            using var context = new FlowerShopDataBase();
			return context.Orders
				.Include(x => x.Flower)
				.Include(x => x.Client)
				.Include(x => x.Implementer)
				.FirstOrDefault(
					x => (model.Id.HasValue && x.Id == model.Id) ||
					(model.ImplementerId.HasValue && model.Status.HasValue &&
					x.ImplementerId == model.ImplementerId && x.Status == model.Status))?
				.GetViewModel;
		}
        public OrderViewModel? Insert(OrderBindingModel model)
        {
            using var context = new FlowerShopDataBase();
            var newOrder = Order.Create( model);
            if (newOrder == null)
            {
                return null;
            }  
            context.Orders.Add(newOrder);
            context.SaveChanges();
            return newOrder.GetViewModel;
        }
        public OrderViewModel? Update(OrderBindingModel model)
        {
            using var context = new FlowerShopDataBase();
            var order = context.Orders.Include(x => x.Flower).Include(x => x.Client).Include(x => x.Implementer).FirstOrDefault(x => x.Id == model.Id);

			if (order == null)
            {
                return null;
            }
            order.Update(model);
            context.SaveChanges();
            return order.GetViewModel;
        }
        public OrderViewModel? Delete(OrderBindingModel model)
        {
            using var context = new FlowerShopDataBase();
            var element = context.Orders.Include(x => x.Flower).Include(x => x.Client).Include(x => x.Implementer).FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Orders.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}