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 Microsoft.EntityFrameworkCore;
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.Include(x => x.Cocktail).Include(x => x.Client).Include(x => x.Implementer).Select(x => x.GetViewModel).ToList();
		}
        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
        {
            if (!model.Id.HasValue && !model.DateFrom.HasValue && !model.ClientId.HasValue && !model.Status.HasValue)
            {
                return new();
            }
            using var context = new BarDatabase();
            if (model.Id.HasValue)
                return context.Orders.Include(x => x.Cocktail).Include(x => x.Client).Include(x => x.Implementer).Where(x => x.Id == model.Id).Select(x => x.GetViewModel).ToList();
            else if (model.ClientId.HasValue)
                return context.Orders.Include(x => x.Cocktail).Include(x => x.Client).Include(x => x.Implementer).Where(x => x.ClientId == model.ClientId).Select(x => x.GetViewModel).ToList();
			else if (model.DateFrom != null)
				return context.Orders.Include(x => x.Cocktail).Include(x => x.Client).Include(x => x.Implementer).Where(x => x.DateCreate >= model.DateFrom).Where(x => x.DateCreate <= model.DateTo).Select(x => x.GetViewModel).ToList();
			else
                return context.Orders.Include(x => x.Cocktail).Include(x => x.Client).Include(x => x.Implementer).Where(x => x.Status.Equals(model.Status)).Select(x => x.GetViewModel).ToList();
		}
        public OrderViewModel? GetElement(OrderSearchModel model)
        {
            if (!model.Id.HasValue && (!model.ImplementerId.HasValue || !model.Status.HasValue))
            {
                return null;
            }
            using var context = new BarDatabase();
			if (model.Id.HasValue)
				return context.Orders.Include(x => x.Cocktail).Include(x => x.Client).Include(x => x.Implementer).FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
			return context.Orders.Include(x => x.Cocktail).Include(x => x.Client).Include(x => x.Implementer).FirstOrDefault(x => x.ImplementerId == model.ImplementerId && x.Status == model.Status)?.GetViewModel;
		}
        public OrderViewModel? Insert(OrderBindingModel model)
        {
			using var context = new BarDatabase();
			var order = Order.Create(model, context);
			if (order == null)
            {
                return null;
            }
            context.Orders.Add(order);
            context.SaveChanges();
			return order.GetViewModel;

		}
        public OrderViewModel? Update(OrderBindingModel model)
        {

            using var context = new BarDatabase();
			var order = context.Orders.Include(x => x.Cocktail).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 BarDatabase();
			var element = context.Orders.Include(x => x.Cocktail).Include(x => x.Client).Include(x => x.Implementer).FirstOrDefault(x => x.Id == model.Id);
			if (element == null)
            {
                return null;
            }
            context.Orders.Remove(element);
            context.SaveChanges();
			return element.GetViewModel;
		}
    }
}