using Microsoft.EntityFrameworkCore;
using PrecastConcretePlantContracts.BindingModels;
using PrecastConcretePlantContracts.SearchModels;
using PrecastConcretePlantContracts.StoragesContracts;
using PrecastConcretePlantContracts.ViewModels;
using PrecastConcretePlantDatabaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PrecastConcretePlantDatabaseImplement.Implements
{
    public class OrderStorage : IOrderStorage
    {
        public List<OrderViewModel> GetFullList()
        {
            using var context = new PrecastConcretePlantDatabase();
			return context.Orders.Include(x => x.Reinforced).Include(x => x.Client).Select(x => x.GetViewModel).ToList();
		}

		public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
        {
			if ((!model.DateFrom.HasValue || !model.DateTo.HasValue) && !model.ClientId.HasValue)
			{
				return new();
            }
            using var context = new PrecastConcretePlantDatabase();
			return context.Orders.Include(x => x.Reinforced).Include(x => x.Client).Where(x =>
			    (model.DateFrom.HasValue && model.DateTo.HasValue && x.DateCreate >= model.DateFrom && x.DateCreate <= model.DateTo) ||
				(model.ClientId.HasValue && x.ClientId == model.ClientId))
				    .Select(x => x.GetViewModel).ToList();
		}

        public OrderViewModel? GetElement(OrderSearchModel model)
        {
            if (!model.Id.HasValue)
            {
                return new();
            }
            using var context = new PrecastConcretePlantDatabase();
			return context.Orders.Include(x => x.Reinforced).Include(x => x.Client).FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
		}

		public OrderViewModel? Insert(OrderBindingModel model)
        {
            using var context = new PrecastConcretePlantDatabase();
            if (model == null)
                return null;
            var newOrder = Order.Create(context, model);
            if (newOrder == null)
            {
                return null;
            }
            context.Orders.Add(newOrder);
            context.SaveChanges();
            return newOrder.GetViewModel;
        }

        public OrderViewModel? Update(OrderBindingModel model)
        {
            using var context = new PrecastConcretePlantDatabase();
            var order = context.Orders.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 PrecastConcretePlantDatabase();
            var order = context.Orders.FirstOrDefault(rec => rec.Id == model.Id);
            if (order != null)
            {
                context.Orders.Remove(order);
                context.SaveChanges();
                return order.GetViewModel;
            }
            return null;
        }
    }
}