using System;
using Paca.Core;
using Xunit;

namespace Paca.Tests.Core;

public class VideoAspectAutoCropperGateTests
{
    [Fact]
    public void Gate337_VideoAspectAutoCropper_BuildsCenterCropFilter()
    {
        var filter = VideoAspectAutoCropper.BuildReframingFilterArgs(ReframingMode.CenterCrop, 1080, 1920);

        Assert.Contains("crop=ih*9/16:ih", filter);
        Assert.Contains("scale=1080:1920", filter);
    }

    [Fact]
    public void Gate338_VideoAspectAutoCropper_BuildsBlurredBackgroundFilter()
    {
        var filter = VideoAspectAutoCropper.BuildReframingFilterArgs(ReframingMode.BlurredBackground, 1080, 1920);

        Assert.Contains("split[bg][fg]", filter);
        Assert.Contains("boxblur", filter);
        Assert.Contains("overlay=(W-w)/2:(H-h)/2", filter);
    }

    [Fact]
    public void Gate339_VideoAspectAutoCropper_BuildsBlackPadFilter()
    {
        var filter = VideoAspectAutoCropper.BuildReframingFilterArgs(ReframingMode.BlackPad, 1080, 1920);

        Assert.Contains("pad=1080:1920:(ow-iw)/2:(oh-ih)/2:black", filter);
    }

    [Fact]
    public void Gate340_VideoAspectAutoCropper_BuildsFullCommandLine_WithAudioCopy()
    {
        var cmd = VideoAspectAutoCropper.BuildReframingCommandLine(
            inputPath: "C:\\videos\\horizontal.mp4",
            outputPath: "C:\\videos\\vertical_shorts.mp4",
            mode: ReframingMode.CenterCrop,
            targetWidth: 1080,
            targetHeight: 1920
        );

        Assert.Contains("-i \"C:\\videos\\horizontal.mp4\"", cmd);
        Assert.Contains("-c:v libx264 -crf 20 -preset fast", cmd);
        Assert.Contains("-c:a copy", cmd);
        Assert.EndsWith("\"C:\\videos\\vertical_shorts.mp4\" -y", cmd);
    }
}