using Avalonia;
using Avalonia.Headless;
using Avalonia.Controls;
using TovarV2;

namespace TestTovarV2
{
    [TestFixture]
    public class KorzinaTests
    {
        private Korzina _korzinaWindow;

        [OneTimeSetUp]
        public void OneTimeSetup()
        {
            AppBuilder.Configure<App>()
                .UseHeadless(new AvaloniaHeadlessPlatformOptions())
                .SetupWithoutStarting();
        }

        [SetUp]
        public void Setup()
        {
            ListPr.productSelects.Clear();
            ListPr.productSelects.AddRange(new List<ProductSelect>
            {
                new ProductSelect { Id = 0, nameProdKorz = "TestProduct1", priceProdKorz = 10, quantityProdKorz = 1, quantitySelect = 1 },
                new ProductSelect { Id = 1, nameProdKorz = "TestProduct2", priceProdKorz = 20, quantityProdKorz = 2, quantitySelect = 1 },
                new ProductSelect { Id = 2, nameProdKorz = "TestProduct3", priceProdKorz = 30, quantityProdKorz = 3, quantitySelect = 1 }
            });

            _korzinaWindow = new Korzina();
            _korzinaWindow.Show();
        }

        [TearDown]
        public void TearDown()
        {
            _korzinaWindow.Close();
            ListPr.productSelects.Clear();
        }
        
        [Test]
        public void IsOpenWindow_ShouldReturnTrue_WhenItOpened()
        {
            Assert.IsTrue(Korzina.IsOpen);
            _korzinaWindow.Close();
        }
        
        [Test]
        public void IsOpenWindow_ShouldReturnFalse_WhenItClosed()
        {
            Assert.IsTrue(Korzina.IsOpen);
            _korzinaWindow.Close();
            Assert.IsFalse(Korzina.IsOpen);
        }

        [Test]
        public void NextPageOnClick_ShouldReturnLastTwoProducts_WhenThreeProductsInList()
        {
            _korzinaWindow.PagesConfig();
            _korzinaWindow.NextPage_OnClick(null, null);

            Assert.AreEqual("TestProduct3", _korzinaWindow.currentProdSel[0].nameProdKorz);
        }
        [Test]
        public void PrevPageOnClick_ShouldReturnLastTwoProducts_WhenThreeProductsInList()
        {
            _korzinaWindow.PagesConfig();
            _korzinaWindow.NextPage_OnClick(null, null);
            _korzinaWindow.PrevPage_OnClick(null, null);

            Assert.AreEqual("TestProduct1", _korzinaWindow.currentProdSel[0].nameProdKorz);
        }
        
        [Test]
        public void DelBtnOnClick_ShouldRemoveProduct_WhenFirstProductIsSelected()
        {
            int initialCount = ListPr.productSelects.Count;
        
            var delButton = new Button { Tag = 0 };
            _korzinaWindow.DelBtn_Click(delButton, null);
        
            Assert.AreEqual(initialCount - 1, ListPr.productSelects.Count);
        }
        
        [Test]
        public void DelBtnOnClick_ShouldRemoveProduct_WhenSecondProductIsSelected()
        {
            int initialCount = ListPr.productSelects.Count;
        
            var delButton = new Button { Tag = 1 };
            _korzinaWindow.DelBtn_Click(delButton, null);
        
            Assert.AreEqual(initialCount - 1, ListPr.productSelects.Count);
        }
        
        [Test]
        public void DelBtnOnClick_ShouldThrowArgumentOutOfRangeException_WhenFourthProductIsSelected()
        {
            var delButton = new Button { Tag = 3 };

            var ex = Assert.Throws<ArgumentOutOfRangeException>(() =>
            {
                _korzinaWindow.DelBtn_Click(delButton, null);
            });

            Assert.That(ex.Message, Does.Contain("Index was out of range"));
        }

        [Test]
        public void ReturnProdEditClick_ShouldOpenProductEditWindow_WhenItPressed()
        {
            _korzinaWindow.ReturnProdEdit_Click(null, null);
            Assert.IsTrue(ProductEdit.IsOpen);
        }
        
        [Test]
        public void PodschetOrderBtnClick_ShouldCalculateTotalPriceCorrectly_WhenDataIsCorrect()
        {
            var korzina = new Korzina();
            korzina.GetPodschetstoimosti = new TextBlock();

            ListPr.productSelects = new List<ProductSelect>()
            {
                new ProductSelect { priceProdKorz = 100, quantitySelect = 2 },
                new ProductSelect { priceProdKorz = 150, quantitySelect = 1 }
            };

            korzina.PodschetOrderBtn_Click(null, null);

            Assert.AreEqual("Общая стоимость составляет: 350 руб.", korzina.GetPodschetstoimosti.Text);
        }
        
        [Test]
        public void PodschetOrderBtnClick_ShouldCalculateTotalPriceCorrectly_WhenDataIsNotCorrect()
        {
            var korzina = new Korzina();
            korzina.GetPodschetstoimosti = new TextBlock();

            ListPr.productSelects = new List<ProductSelect>()
            {
                new ProductSelect { priceProdKorz = 100, quantitySelect = 0 },
                new ProductSelect { priceProdKorz = -150, quantitySelect = 1 }
            };

            korzina.PodschetOrderBtn_Click(null, null);

            Assert.AreEqual("Общая стоимость составляет: -150 руб.", korzina.GetPodschetstoimosti.Text);
        }
        
        [Test]
        public void ExitClick_ShouldOpenMainWindow_WhenItPressed()
        {
            _korzinaWindow.Exit_Click(null, null);
            Assert.IsTrue(MainWindow.IsOpen);
        }
        
        
        //багуля
        [Test]
        public void UvelBtnOnClick_ShouldIncreaseQuantity_WhenItPressedOnce()
        {
            var button = new Button { Tag = 0 };
            var initialQuantity = ListPr.productSelects[0].quantitySelect;

            _korzinaWindow.UvelBtn_OnClick(button, null);

            // Assert.AreEqual(initialQuantity + 1, ListPr.productSelects[0].quantitySelect);
            Assert.AreEqual(initialQuantity, ListPr.productSelects[0].quantitySelect);
        }
        
        //тоже
        [Test]
        public void UmenBtnOnClick_ShouldDecreaseQuantity_WhenItPressedOnce()
        {
            var button = new Button { Tag = 0 };
            var initialQuantity = ListPr.productSelects[0].quantitySelect;

            _korzinaWindow.UmenBtn_OnClick(button, null);

            // Assert.AreEqual(initialQuantity + 1, ListPr.productSelects[0].quantitySelect);
            Assert.AreEqual(initialQuantity, ListPr.productSelects[0].quantitySelect);
        }
        
        [Test]
        public void CheckQuantity_ShouldCapAtMax_WhenQuantityExceedsStock()
        {
            var result = _korzinaWindow.CheckQuantity(10, 5);
            Assert.AreEqual(5, result);
        }

        [Test]
        public void CheckQuantity_ShouldRaiseToMin_WhenQuantityBelowOne()
        {
            var result = _korzinaWindow.CheckQuantity(0, 5);
            Assert.AreEqual(1, result);
        }

        [Test]
        public void CheckQuantity_ShouldReturnSame_WhenWithinRange()
        {
            var result = _korzinaWindow.CheckQuantity(3, 5);
            Assert.AreEqual(3, result);
        }
    }
}