// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Reflection;

namespace System.Windows.Forms.Tests;

public class TableLayoutStyleTests
{
    [WinFormsFact]
    public void TableLayoutStyle_Ctor_Default()
    {
        SubTableLayoutStyle style = new();
        Assert.Equal(SizeType.AutoSize, style.SizeType);
    }

    [WinFormsTheory]
    [EnumData<SizeType>]
    [InvalidEnumData<SizeType>]
    public void TableLayoutStyle_SizeType_Set_GetReturnsExpected(SizeType value)
    {
        SubTableLayoutStyle style = new()
        {
            SizeType = value
        };
        Assert.Equal(value, style.SizeType);

        // Set same.
        style.SizeType = value;
        Assert.Equal(value, style.SizeType);
    }

    [WinFormsTheory]
    [InlineData(SizeType.Absolute, 1)]
    [InlineData(SizeType.AutoSize, 0)]
    [InlineData(SizeType.Percent, 1)]
    [InlineData((SizeType.AutoSize - 1), 1)]
    [InlineData((SizeType.Percent + 1), 1)]
    public void TableLayoutStyle_SizeType_SetWithOwner_GetReturnsExpected(SizeType value, int expectedLayoutCallCount)
    {
        using TableLayoutPanel control = new();
        ColumnStyle style = new();
        control.LayoutSettings.RowStyles.Add(style);
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("Style", e.AffectedProperty);
            layoutCallCount++;
        };

        style.SizeType = value;
        Assert.Equal(value, style.SizeType);
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.False(control.IsHandleCreated);

        // Set same.
        style.SizeType = value;
        Assert.Equal(value, style.SizeType);
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(SizeType.Absolute, 1)]
    [InlineData(SizeType.AutoSize, 0)]
    [InlineData(SizeType.Percent, 1)]
    [InlineData((SizeType.AutoSize - 1), 1)]
    [InlineData((SizeType.Percent + 1), 1)]
    public void TableLayoutStyle_SizeType_SetWithOwnerWithHandle_GetReturnsExpected(SizeType value, int expectedLayoutCallCount)
    {
        using TableLayoutPanel control = new();
        ColumnStyle style = new();
        control.LayoutSettings.RowStyles.Add(style);
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("Style", e.AffectedProperty);
            layoutCallCount++;
        };

        style.SizeType = value;
        Assert.Equal(value, style.SizeType);
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedLayoutCallCount * 2, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Set same.
        style.SizeType = value;
        Assert.Equal(value, style.SizeType);
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedLayoutCallCount * 2, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsTheory]
    [InlineData(typeof(string), true)]
    [InlineData(typeof(InstanceDescriptor), true)]
    [InlineData(typeof(TableLayoutStyle), false)]
    [InlineData(typeof(int), false)]
    [InlineData(null, false)]
    public void TableLayoutStyle_ConverterCanConvertTo_Invoke_ReturnsExpected(Type destinationType, bool expected)
    {
        TypeConverter converter = TypeDescriptor.GetConverter(typeof(TableLayoutStyle));
        Assert.Equal(expected, converter.CanConvertTo(destinationType));
    }

    public static IEnumerable<object[]> ConvertTo_TestData()
    {
        yield return new object[] { new RowStyle(SizeType.AutoSize, 1), typeof(RowStyle).GetConstructor(Array.Empty<Type>()), Array.Empty<object>() };
        yield return new object[] { new RowStyle(SizeType.Absolute, 1), typeof(RowStyle).GetConstructor([typeof(SizeType), typeof(int)]), new object[] { SizeType.Absolute, 1f } };
        yield return new object[] { new RowStyle(SizeType.Percent, 1), typeof(RowStyle).GetConstructor([typeof(SizeType), typeof(int)]), new object[] { SizeType.Percent, 1f } };
        yield return new object[] { new ColumnStyle(SizeType.AutoSize, 1), typeof(ColumnStyle).GetConstructor(Array.Empty<Type>()), Array.Empty<object>() };
        yield return new object[] { new ColumnStyle(SizeType.Absolute, 1), typeof(ColumnStyle).GetConstructor([typeof(SizeType), typeof(int)]), new object[] { SizeType.Absolute, 1f } };
        yield return new object[] { new ColumnStyle(SizeType.Percent, 1), typeof(ColumnStyle).GetConstructor([typeof(SizeType), typeof(int)]), new object[] { SizeType.Percent, 1f } };
    }

    [WinFormsTheory]
    [MemberData(nameof(ConvertTo_TestData))]
    public void TableLayoutStyle_ConverterConvertTo_InstanceDescriptorRowAbsolutePercent_ReturnsExpected(object value, ConstructorInfo expectedConstructor, object[] expectedArguments)
    {
        TypeConverter converter = TypeDescriptor.GetConverter(typeof(TableLayoutStyle));
        InstanceDescriptor descriptor = Assert.IsType<InstanceDescriptor>(converter.ConvertTo(value, typeof(InstanceDescriptor)));
        Assert.Equal(expectedConstructor, descriptor.MemberInfo);
        Assert.Equal(expectedArguments, descriptor.Arguments);
    }

    [WinFormsTheory]
    [InvalidEnumData<SizeType>]
    public void TableLayoutStyle_ConverterConvertTo_InvalidSizeType_ThrowsNotSupportedException(SizeType sizeType)
    {
        TypeConverter converter = TypeDescriptor.GetConverter(typeof(TableLayoutStyle));
        Assert.Throws<NotSupportedException>(() => converter.ConvertTo(new SubTableLayoutStyle { SizeType = sizeType }, typeof(InstanceDescriptor)));
    }

    [WinFormsFact]
    public void TableLayoutStyle_ConverterConvertTo_NullDestinationType_ThrowsArgumentNullException()
    {
        TypeConverter converter = TypeDescriptor.GetConverter(typeof(TableLayoutStyle));
        Assert.Throws<ArgumentNullException>("destinationType", () => converter.ConvertTo(new object(), null));
    }

    [WinFormsFact]
    public void TableLayoutStyle_ConverterConvertTo_ValueNotTableLayoutStyle_ThrowsNotSupportedException()
    {
        TypeConverter converter = TypeDescriptor.GetConverter(typeof(TableLayoutStyle));
        Assert.Throws<NotSupportedException>(() => converter.ConvertTo(1, typeof(InstanceDescriptor)));
    }

    [WinFormsTheory]
    [InlineData(typeof(TableLayoutPanelCellPosition))]
    [InlineData(typeof(int))]
    public void TableLayoutStyle_ConverterConvertTo_InvalidDestinationType_ThrowsNotSupportedException(Type destinationType)
    {
        TypeConverter converter = TypeDescriptor.GetConverter(typeof(TableLayoutStyle));
        Assert.Throws<NotSupportedException>(() => converter.ConvertTo(new RowStyle(), destinationType));
    }

    private class SubTableLayoutStyle : TableLayoutStyle
    {
    }
}
