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

namespace FurnitureAssemblyDatabaseImplement.Implements
{
    public class OrderStorage : IOrderStorage
    {
        public OrderViewModel? Delete(OrderBindingModel model)
        {
            using var context = new FurnitureAssemblyDatabase();
            var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
            if (order != null)
            {
                context.Orders.Remove(order);
                context.SaveChanges();
                return context.Orders.Include(x => x.Furniture).Include(x => x.Client).Include(x => x.Implementer).FirstOrDefault(x => x.Id == order.Id)?.GetViewModel;
            }
            return null;
        }

        public OrderViewModel? GetElement(OrderSearchModel model)
        {
            if (!model.Id.HasValue && (!model.ImplementerId.HasValue || !model.Status.HasValue))
            {
                return null;
            }
            using var context = new FurnitureAssemblyDatabase();
            if (model.Id.HasValue)
            {
                return context.Orders.Include(x => x.Furniture).Include(x => x.Client).Include(x => x.Implementer).FirstOrDefault(x =>
               (model.Id.HasValue && x.Id == model.Id))
                ?.GetViewModel;
            }
            return context.Orders
                .Include(x => x.Furniture)
                .Include(x => x.Client)
                .Include(x => x.Implementer)
                .FirstOrDefault(x => x.ImplementerId.Equals(model.ImplementerId) && x.Status.Equals(model.Status))
               ?.GetViewModel;
        }

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

            return context.Orders
            .Include(x => x.Furniture)
            .Include(x => x.Client)
            .Include(x => x.Implementer)
            .Where(x => !(
            (((model.DateFrom.HasValue) && (model.DateTo.HasValue)) && !(model.DateFrom <= x.DateCreate && x.DateCreate <= model.DateTo)
            || (model.ClientId.HasValue && !x.ClientId.Equals(model.ClientId))
            || (model.Status.HasValue && !x.Status.Equals(model.Status))))
            )
            .Select(x => x.GetViewModel)
            .ToList();
        }

        public List<OrderViewModel> GetFullList()
        {
            using var context = new FurnitureAssemblyDatabase();
            return context.Orders
            .Include(x => x.Furniture)
            .Include(x => x.Client)
            .Include(x => x.Implementer)
            .Select(x => x.GetViewModel)
            .ToList();
        }

        public OrderViewModel? Insert(OrderBindingModel model)
        {
            using var context = new FurnitureAssemblyDatabase();
            var newOrder = Order.Create(model);
            if (newOrder == null)
            {
                return null;
            }
            context.Orders.Add(newOrder);
            context.SaveChanges();
            return context.Orders.Include(x => x.Furniture).Include(x => x.Client).Include(x => x.Implementer).FirstOrDefault(x => x.Id == newOrder.Id)?.GetViewModel;
        }

        public OrderViewModel? Update(OrderBindingModel model)
        {
            using var context = new FurnitureAssemblyDatabase();
            var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
            if (order == null)
            {
                return null;
            }
            order.Update(model);
            context.SaveChanges();
            return context.Orders.Include(x => x.Furniture).Include(x => x.Client).Include(x => x.Implementer).FirstOrDefault(x => x.Id == order.Id)?.GetViewModel;
        }
    }
}