using Microsoft.eShopWeb.ApplicationCore.Entities.OrderAggregate;
using System.Collections.Generic;
using System.Linq;
using Xunit;

namespace Microsoft.eShopWeb.UnitTests.ApplicationCore.Specifications
{
    public class CustomerOrdersWithItemsSpecification
    {
        private readonly string _buyerId = "TestBuyerId";
        private Address _shipToAddress = new Address("Street", "City", "OH", "US", "11111");

        [Fact]
        public void ReturnsOrderWithOrderedItem()
        {
            var spec = new eShopWeb.ApplicationCore.Specifications.CustomerOrdersWithItemsSpecification(_buyerId);

            var result = GetTestCollection()
                .AsQueryable()
                .FirstOrDefault(spec.WhereExpressions.FirstOrDefault());

            Assert.NotNull(result);
            Assert.NotNull(result.OrderItems);
            Assert.Equal(1, result.OrderItems.Count);
            Assert.NotNull(result.OrderItems.FirstOrDefault().ItemOrdered);
        }

        [Fact]
        public void ReturnsAllOrderWithAllOrderedItem()
        {
            var spec = new eShopWeb.ApplicationCore.Specifications.CustomerOrdersWithItemsSpecification(_buyerId);

            var result = GetTestCollection()
                .AsQueryable()
                .Where(spec.WhereExpressions.FirstOrDefault())
                .ToList();

            Assert.NotNull(result);
            Assert.Equal(2, result.Count);
            Assert.Equal(1, result[0].OrderItems.Count);
            Assert.NotNull(result[0].OrderItems.FirstOrDefault().ItemOrdered);
            Assert.Equal(2, result[1].OrderItems.Count);
            Assert.NotNull(result[1].OrderItems.ToList()[0].ItemOrdered);
            Assert.NotNull(result[1].OrderItems.ToList()[1].ItemOrdered);
        }

        public List<Order> GetTestCollection()
        {
            var ordersList = new List<Order>();

            ordersList.Add(new Order(_buyerId, _shipToAddress, 
                new List<OrderItem> 
                { 
                    new OrderItem(new CatalogItemOrdered(1, "Product1", "testurl"), 10.50m, 1)
                }));
            ordersList.Add(new Order(_buyerId, _shipToAddress,
                new List<OrderItem>
                {
                    new OrderItem(new CatalogItemOrdered(2, "Product2", "testurl"), 15.50m, 2),
                    new OrderItem(new CatalogItemOrdered(2, "Product3", "testurl"), 20.50m, 1)
                }));

            return ordersList;
        }
    }
}
