using AyCode.Core.Tests.TestModels;
using AyCode.Services.Server.Tests.SignalRs;
using AyCode.Services.SignalRs;
using Bunit;
using DevExpress.Blazor;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace AyCode.Blazor.Components.Tests.Grids;

/// <summary>
/// Tests for MgGridBase layout persistence functionality.
/// Tests that column width changes are persisted and loaded correctly.
/// </summary>
[TestClass]
public class MgGridBaseTests : BunitTestContext
{
    private TestLogger _logger = null!;
    private TestableSignalRHub2 _hub = null!;
    private TestableSignalRClient2 _client = null!;
    private TestSignalRService2 _service = null!;
    private SignalRCrudTags _crudTags = null!;
    
    private const string StorageKey = "TestGrid_Master_AutoSave_0";

    [TestInitialize]
    public void TestSetup()
    {
        Context = new BunitContext();
        Context.Services.AddDevExpressBlazor();

        _logger = new TestLogger();
        _hub = new TestableSignalRHub2();
        _service = new TestSignalRService2();
        _client = new TestableSignalRClient2(_hub, _logger);
        _hub.RegisterService(_service, _client);

        _crudTags = new SignalRCrudTags(
            TestSignalRTags.DataSourceGetAll,
            TestSignalRTags.DataSourceGetItem,
            TestSignalRTags.DataSourceAdd,
            TestSignalRTags.DataSourceUpdate,
            TestSignalRTags.DataSourceRemove
        );

        TestMgGridOrderItem.ClearLayoutStorage();
        Context.JSInterop.Mode = JSRuntimeMode.Loose;
    }

    [TestCleanup]
    public void TestTeardown() => Context?.Dispose();

    private IRenderedComponent<TestMgGridOrderItem> RenderTestGrid(string autoSaveLayoutName = "TestGrid")
    {
        var dataSource = new TestGridOrderItemDataSource(_client, _crudTags);
        
        return Context!.Render<TestMgGridOrderItem>(parameters => parameters
            .Add(p => p.DataSource, dataSource)
            .Add(p => p.Logger, _logger)
            .Add(p => p.SignalRClient, _client)
            .Add(p => p.AutoSaveLayoutName, autoSaveLayoutName)
            .Add(p => p.GetAllMessageTag, _crudTags.GetAllMessageTag)
            .Add(p => p.AddMessageTag, _crudTags.AddMessageTag)
            .Add(p => p.UpdateMessageTag, _crudTags.UpdateMessageTag)
            .Add(p => p.RemoveMessageTag, _crudTags.RemoveMessageTag)
        );
    }

    #region Layout Persistence Tests

    [TestMethod]
    public async Task MgGridBase_ColumnWidth_ShouldBePersisted_WhenNewGridIsRendered()
    {
        // Arrange - Render first grid
        var cut1 = RenderTestGrid();
        
        // Wait for data source to load
        await cut1.Instance.WaitForDataSourceLoadedAsync();

        // Get columns from first grid
        var columns1 = cut1.Instance.GetDataColumns();
        Assert.IsTrue(columns1.Count > 0, "Grid should have columns after data source loaded");

        // Set column width on first grid (must use BeginUpdate/EndUpdate on the dispatcher)
        var firstColumn = columns1[0];
        var expectedWidth = "150px";
        
        await cut1.InvokeAsync(() =>
        {
            cut1.Instance.BeginUpdate();
            firstColumn.Width = expectedWidth;
            cut1.Instance.EndUpdate();
        });

        // Trigger layout save by disposing
        await cut1.Instance.DisposeAsync();

        // Act - Render second grid with same TDataItem
        var cut2 = RenderTestGrid();
        
        // Wait for data source to load
        await cut2.Instance.WaitForDataSourceLoadedAsync();

        // Assert - Second grid should have the same column width
        var columns2 = cut2.Instance.GetDataColumns();
        Assert.IsTrue(columns2.Count > 0, "Second grid should have columns");
        
        var secondGridFirstColumn = columns2[0];
        Assert.AreEqual(expectedWidth, secondGridFirstColumn.Width, 
            $"Column width should be persisted. Expected: {expectedWidth}, Actual: {secondGridFirstColumn.Width}");
    }

    [TestMethod]
    public async Task MgGridBase_LayoutStorage_ShouldContainLayout_AfterGridRenders()
    {
        // Arrange & Act
        var cut = RenderTestGrid();
        await cut.Instance.WaitForDataSourceLoadedAsync();

        // Assert
        Assert.IsTrue(TestMgGridOrderItem.LayoutStorage.ContainsKey(StorageKey), 
            "Layout should be saved to storage after grid renders");
        Assert.IsNotNull(TestMgGridOrderItem.LayoutStorage[StorageKey]);
    }

    [TestMethod]
    public async Task MgGridBase_DifferentGridNames_ShouldHaveDifferentLayouts()
    {
        // Arrange - Render first grid with name "Grid1"
        var cut1 = RenderTestGrid("Grid1");
        await cut1.Instance.WaitForDataSourceLoadedAsync();

        // Render second grid with name "Grid2"
        var cut2 = RenderTestGrid("Grid2");
        await cut2.Instance.WaitForDataSourceLoadedAsync();

        // Assert - Different storage keys should exist
        var storageKeys = TestMgGridOrderItem.LayoutStorage.Keys.ToList();
        
        // There should be at least 2 different keys
        Assert.IsTrue(storageKeys.Count >= 2, 
            $"Should have at least 2 storage keys, found: {string.Join(", ", storageKeys)}");
        
        // Keys should contain Grid1 and Grid2
        Assert.IsTrue(storageKeys.Any(k => k.Contains("Grid1")), 
            $"Should have Grid1 key. Keys: {string.Join(", ", storageKeys)}");
        Assert.IsTrue(storageKeys.Any(k => k.Contains("Grid2")), 
            $"Should have Grid2 key. Keys: {string.Join(", ", storageKeys)}");
    }

    [TestMethod]
    public async Task MgGridBase_IsMasterGrid_ShouldBeTrueWhenNoParentDataItem()
    {
        // Act
        var cut = RenderTestGrid();
        await cut.Instance.WaitForDataSourceLoadedAsync();

        // Assert
        Assert.IsTrue(cut.Instance.IsMasterGrid);
    }

    [TestMethod]
    public async Task MgGridBase_Columns_ShouldBeBuiltFromReflection()
    {
        // Arrange & Act
        var cut = RenderTestGrid();
        await cut.Instance.WaitForDataSourceLoadedAsync();

        // Assert - Should have columns for TestOrderItem properties
        var columns = cut.Instance.GetDataColumns();
        Assert.IsTrue(columns.Count > 0, "Grid should have columns built from TDataItem");

        // Verify some expected column names exist
        var columnNames = columns.Select(c => c.FieldName).ToList();
        Assert.IsTrue(columnNames.Contains(nameof(TestOrderItem.Id)), "Should have Id column");
        Assert.IsTrue(columnNames.Contains(nameof(TestOrderItem.ProductName)), "Should have ProductName column");
        Assert.IsTrue(columnNames.Contains(nameof(TestOrderItem.Quantity)), "Should have Quantity column");
    }

    #endregion
}