using Avalonia;
using Avalonia.Controls;
using Avalonia.Headless;
using Avalonia.Media.Imaging;
using NUnit.Framework;
using System.IO;
using TovarV2;

namespace TestTovarV2
{
    [TestFixture]
    public class AddTovarTests
    {
        private AddTovar _addTovarWindow;
        private Bitmap _testBitmap;

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

            var testImagePath = Path.Combine(TestContext.CurrentContext.TestDirectory, "Assets", "picture.png");
            _testBitmap = new Bitmap(testImagePath);
        }

        [SetUp]
        public void Setup()
        {
            _addTovarWindow = new AddTovar();
            _addTovarWindow.Show();

            _addTovarWindow.GetNameTov.Text = "";
            _addTovarWindow.GetPriceTov.Text = "";
            _addTovarWindow.GetQuantityTov.Text = "";
            _addTovarWindow.bitmapToBind = null;

            ListPr.ListProd.Clear();
            ListPr.b = 1;
        }

        [TearDown]
        public void TearDown()
        {
            _addTovarWindow.Close();
        }

        [OneTimeTearDown]
        public void GlobalTearDown()
        {
            _testBitmap?.Dispose();
        }

        [Test]
        public void IsOpenWindow_ShouldReturnTrue_WhenItOpened()
        {
            Assert.IsTrue(AddTovar.IsOpen);
            _addTovarWindow.Close();
        }
        
        [Test]
        public void IsOpenWindow_ShouldReturnFalse_WhenItClosed()
        {
            Assert.IsTrue(AddTovar.IsOpen);
            _addTovarWindow.Close();
            Assert.IsFalse(AddTovar.IsOpen);
        }

        [Test]
        public void AddTovarOk_ShouldReturnAddedProduct_WhenEnteredDataIsCorrect()
        {
            _addTovarWindow.GetNameTov.Text = "TestProduct";
            _addTovarWindow.GetPriceTov.Text = "1";
            _addTovarWindow.GetQuantityTov.Text = "2";
            _addTovarWindow.bitmapToBind = _testBitmap;

            _addTovarWindow.AddTovarOk_Click(null, null);

            Assert.AreEqual(1, ListPr.ListProd.Count);
            Assert.AreEqual("TestProduct", ListPr.ListProd[0].nameProd);
        }
        
        [Test]
        public void AddTovarOk_ShouldThrowAssertionException_WhenEnteredNameIsEmpty()
        {
            _addTovarWindow.GetNameTov.Text = "";
            _addTovarWindow.GetPriceTov.Text = "1";
            _addTovarWindow.GetQuantityTov.Text = "2";
            _addTovarWindow.bitmapToBind = _testBitmap;

            _addTovarWindow.AddTovarOk_Click(null, null);

            var ex = Assert.Throws<AssertionException>(() =>
            {
                Assert.AreEqual("TestProduct", ListPr.ListProd[0].nameProd);
            });

            Assert.That(ex.Message, Does.Contain("Expected string length 11 but was 0"));
        }
        
        [Test]
        public void AddTovarOk_ShouldThrowFormatException_WhenEnteredPriceIsEmpty()
        {
            _addTovarWindow.GetNameTov.Text = "TestProduct";
            _addTovarWindow.GetPriceTov.Text = "";
            _addTovarWindow.GetQuantityTov.Text = "2";
            _addTovarWindow.bitmapToBind = _testBitmap;
            
            var ex = Assert.Throws<FormatException>(() =>
            {
                _addTovarWindow.AddTovarOk_Click(null, null);
            });

            Assert.That(ex.Message, Does.Contain("input string"));
        }
        
        [Test]
        public void AddTovarOk_ShouldThrowFormatException_WhenEnteredQuantityIsEmpty()
        {
            _addTovarWindow.GetNameTov.Text = "TestProduct";
            _addTovarWindow.GetPriceTov.Text = "1";
            _addTovarWindow.GetQuantityTov.Text = "";
            _addTovarWindow.bitmapToBind = _testBitmap;
            
            var ex = Assert.Throws<FormatException>(() =>
            {
                _addTovarWindow.AddTovarOk_Click(null, null);
            });

            Assert.That(ex.Message, Does.Contain("input string"));
        }
        
        [Test]
        public void AddTovarOk_ShouldReturnAddedProduct_WhenImageIsEmpty()
        {
            _addTovarWindow.GetNameTov.Text = "TestProduct";
            _addTovarWindow.GetPriceTov.Text = "1";
            _addTovarWindow.GetQuantityTov.Text = "2";
            _addTovarWindow.bitmapToBind = null;

            _addTovarWindow.AddTovarOk_Click(null, null);

            Assert.AreEqual(1, ListPr.ListProd.Count);
            Assert.AreEqual("TestProduct", ListPr.ListProd[0].nameProd);
            Assert.IsNull(ListPr.ListProd[0].bitmapProd);
        }

        [Test]
        public void AddTovarOk_ShouldReturnError_WhenEnteredNameAlreadyExists()
        {
            ListPr.ListProd.Add(new Product
            {
                nameProd = "TestProduct",
                priceProd = 1,
                quantityProd = 2,
                bitmapProd = _testBitmap
            });

            _addTovarWindow.GetNameTov.Text = "TestProduct";
            _addTovarWindow.GetPriceTov.Text = "1";
            _addTovarWindow.GetQuantityTov.Text = "2";
            _addTovarWindow.bitmapToBind = _testBitmap;

            _addTovarWindow.AddTovarOk_Click(null, null);

            Assert.AreEqual("Товар с таким именем уже имеется в каталоге", _addTovarWindow.GetErrorMsg.Text);
            Assert.AreEqual(1, ListPr.ListProd.Count);
        }

        [Test]
        public void SetBitmap_ShouldReturnSelectedImage_WhenItIsSelected()
        {
            _addTovarWindow.bitmapToBind = _testBitmap;
            _addTovarWindow.GetImagePath.Source = _addTovarWindow.bitmapToBind;

            Assert.AreEqual(_testBitmap, _addTovarWindow.GetImagePath.Source);
        }
    }
}