using YZWater.Core.Utils;

namespace YZWater.Core.Tests.Utils;

public class WinSizeTests
{
    [Fact]
    public void GetScaleFactor_ReturnsMinOfXAndY()
    {
        // 宽屏：高度为限制因素
        var scale = WinSize.GetScaleFactor(2048, 768);
        Assert.Equal(1.0, scale);

        // 等比放大
        var scale2 = WinSize.GetScaleFactor(1536, 1152);
        Assert.Equal(1.5, scale2, 5);
    }

    [Fact]
    public void GetScaleFactor_SmallScreen_ReturnsReducedScale()
    {
        var scale = WinSize.GetScaleFactor(512, 384);
        Assert.Equal(0.5, scale);
    }

    [Fact]
    public void CalculateSize_ScalesCorrectly()
    {
        var result = WinSize.CalculateSize(100, 1.5);
        Assert.Equal(150, result);
    }

    [Fact]
    public void CalculateFontSize_ClampsToMinimum()
    {
        var result = WinSize.CalculateFontSize(8, 0.5); // 8 * 0.5 = 4, 低于下限 12
        Assert.Equal(12, result);
    }

    [Fact]
    public void CalculateFontSize_ClampsToMaximum()
    {
        var result = WinSize.CalculateFontSize(20, 1.5); // 20 * 1.5 = 30, 超过上限 24
        Assert.Equal(24, result);
    }

    [Fact]
    public void CalculateFontSize_WithinRange_NoClamp()
    {
        var result = WinSize.CalculateFontSize(14, 1.2); // 14 * 1.2 = 16.8
        Assert.Equal(16.8, result);
    }

    [Fact]
    public void CalculateMargin_Uniform_AllSidesEqual()
    {
        var margin = WinSize.CalculateMargin(10, 2.0);
        Assert.Equal(20, margin.Left);
        Assert.Equal(20, margin.Top);
        Assert.Equal(20, margin.Right);
        Assert.Equal(20, margin.Bottom);
    }

    [Fact]
    public void CalculateMargin_Independent_ScalesEachSide()
    {
        var margin = WinSize.CalculateMargin(10, 20, 30, 40, 2.0);
        Assert.Equal(20, margin.Left);
        Assert.Equal(40, margin.Top);
        Assert.Equal(60, margin.Right);
        Assert.Equal(80, margin.Bottom);
    }
}