using System.Collections.Generic;
using System.Linq;
using Microsoft.eShopWeb.ApplicationCore.Entities.BasketAggregate;
using Microsoft.eShopWeb.ApplicationCore.Specifications;
using Moq;
using Xunit;

namespace Microsoft.eShopWeb.UnitTests.ApplicationCore.Specifications;

public class BasketWithItems
{
    private readonly int _testBasketId = 123;
    private readonly Username _buyerId = new("Test buyerId");

    [Fact]
    public void MatchesBasketWithGivenBasketId()
    {
        var spec = new BasketWithItemsSpecification(_testBasketId);

        var result = spec.Evaluate(GetTestBasketCollection()).FirstOrDefault();

        Assert.NotNull(result);
        Assert.Equal(_testBasketId, result.Id);
    }

    [Fact]
    public void MatchesNoBasketsIfBasketIdNotPresent()
    {
        int badBasketId = -1;
        var spec = new BasketWithItemsSpecification(badBasketId);

        var result = spec.Evaluate(GetTestBasketCollection()).Any();

        Assert.False(result);
    }

    [Fact]
    public void MatchesBasketWithGivenBuyerId()
    {
        var spec = new BasketWithItemsSpecification(_buyerId);

        var result = spec.Evaluate(GetTestBasketCollection()).FirstOrDefault();

        Assert.NotNull(result);
        Assert.Equal(_buyerId, result.BuyerId);
    }

    [Fact]
    public void MatchesNoBasketsIfBuyerIdNotPresent()
    {
        string badBuyerId = "badBuyerId";
        var spec = new BasketWithItemsSpecification(new Username(badBuyerId));

        var result = spec.Evaluate(GetTestBasketCollection()).Any();

        Assert.False(result);
    }

    public List<Basket> GetTestBasketCollection()
    {
        var basket1Mock = new Mock<Basket>(_buyerId);
        basket1Mock.SetupGet(s => s.Id).Returns(1);
        var basket2Mock = new Mock<Basket>(_buyerId);
        basket2Mock.SetupGet(s => s.Id).Returns(2);
        var basket3Mock = new Mock<Basket>(_buyerId);
        basket3Mock.SetupGet(s => s.Id).Returns(_testBasketId);

        return new List<Basket>()
            {
                basket1Mock.Object,
                basket2Mock.Object,
                basket3Mock.Object
            };
    }
}