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

namespace TestTovarV2
{
    [TestFixture]
    public class EditTovarTests
    {
        private EditTovar _editTovar;

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

        [SetUp]
        public void Setup()
        {
            ListPr.ListProd = new List<Product>
            {
                new Product 
                { 
                    Id = 0, 
                    nameProd = "Test Product", 
                    priceProd = 100, 
                    quantityProd = 10,
                    bitmapProd = new Bitmap(Path.Combine("Assets", "test_image.png"))
                }
            };
            ListPr.productForEdit = 0;

            _editTovar = new EditTovar();
            _editTovar.Show();
        }

        [TearDown]
        public void TearDown()
        {
            _editTovar.Close();
            ListPr.ListProd.Clear();
        }

        [Test]
        public void EditOkClick_ShouldUpdateProductInfo_WhenFieldsAreValid()
        {
            _editTovar.GetNameTov.Text = "Updated Product";
            _editTovar.GetPriceTov.Text = "200";
            _editTovar.GetQuantityTov.Text = "20";
            var testBitmap = new Bitmap(Path.Combine("Assets", "test_image_updated.png"));
            _editTovar.bitmapToBind = testBitmap;
            
            _editTovar.EditOk_Click(null, null);
            
            Assert.That(ListPr.ListProd[0].nameProd, Is.EqualTo("Updated Product"));
            Assert.That(ListPr.ListProd[0].priceProd, Is.EqualTo(200));
            Assert.That(ListPr.ListProd[0].quantityProd, Is.EqualTo(20));
            Assert.That(ListPr.ListProd[0].bitmapProd, Is.EqualTo(testBitmap));
            Assert.That(ProductEdit.IsOpen, Is.True);
        }

        [Test]
        public void EditOkClick_ShouldNotCrash_WhenImageNotChanged()
        {
            _editTovar.GetNameTov.Text = "Updated Product";
            _editTovar.GetPriceTov.Text = "200";
            _editTovar.GetQuantityTov.Text = "20";
            _editTovar.bitmapToBind = null;
            
            _editTovar.EditOk_Click(null, null);
            
            Assert.That(ListPr.ListProd[0].bitmapProd, Is.Not.Null);
        }

        [Test]
        public void AddTovarImgClick_ShouldUpdateImage_WhenFileSelected()
        {
            var testBitmap = new Bitmap(Path.Combine("Assets", "test_image_updated.png"));
            
            
            _editTovar.bitmapToBind = testBitmap;
            
            _editTovar.AddTovarImg_Click(null, null);
            
            Assert.That(_editTovar.GetImagePath.Source, Is.EqualTo(testBitmap));
        }
        
        [Test]
        public void EditOk_Click_ShouldUpdateOnlyName_WhenOneFieldIsFilled()
        {
            var originalPrice = ListPr.ListProd[0].priceProd;
            _editTovar.GetNameTov.Text = "New Name Only";
    
            _editTovar.EditOk_Click(null, null);
    
            Assert.That(ListPr.ListProd[0].nameProd, Is.EqualTo("New Name Only"));
            Assert.That(ListPr.ListProd[0].priceProd, Is.EqualTo(originalPrice));
        }
        
        [Test]
        public void EditOkClick_ShouldCorrectlyUpdateMultipleProducts_WhenAddSecondProduct()
        {
            ListPr.ListProd.Add(new Product 
            { 
                Id = 1, 
                nameProd = "Second Product", 
                priceProd = 200, 
                quantityProd = 20,
                bitmapProd = new Bitmap(Path.Combine("Assets", "test_image2.png"))
            });
            
            ListPr.productForEdit = 1;
            var secondEdit = new EditTovar();
        
            secondEdit.GetNameTov.Text = "Updated Second";
            secondEdit.GetPriceTov.Text = "300";
            secondEdit.GetQuantityTov.Text = "30";
            secondEdit.EditOk_Click(null, null);
        
            Assert.That(ListPr.ListProd[1].nameProd, Is.EqualTo("Updated Second"));
            Assert.That(ListPr.ListProd[0].nameProd, Is.EqualTo("Test Product"));
        }
        
        [Test]
        public void EditOkClick_ShouldHandleNegativePrice_WhenPriceIsNegative()
        {
            _editTovar.GetPriceTov.Text = "-100";
            
            _editTovar.EditOk_Click(null, null);
            
            Assert.That(ListPr.ListProd[0].priceProd, Is.EqualTo(-100));
        }
        
        [Test]
        public void EditOkClick_ShouldHandleEmptyFields_WhenFieldsIsEmpty()
        {
            _editTovar.GetNameTov.Text = "";
            _editTovar.GetPriceTov.Text = "";
            _editTovar.GetQuantityTov.Text = "";
        
            Assert.DoesNotThrow(() => _editTovar.EditOk_Click(null, null));

            Assert.That(ListPr.ListProd[0].nameProd, Is.Not.EqualTo(""));
            Assert.That(ListPr.ListProd[0].priceProd, Is.Not.EqualTo(0));
            Assert.That(ListPr.ListProd[0].quantityProd, Is.Not.EqualTo(0));
        }
    }
}