using System;
using Paca.Core;
using Xunit;

namespace Paca.Tests.Core;

public class VideoFrameRateConverterGateTests
{
    [Fact]
    public void Gate421_VideoFrameRateConverter_BuildsSimpleFpsFilter()
    {
        var filter = VideoFrameRateConverter.BuildFpsFilter(60, FrameRateConversionMode.Simple);
        Assert.Equal("fps=60", filter);
    }

    [Fact]
    public void Gate422_VideoFrameRateConverter_BuildsMotionInterpolationFilter()
    {
        var filter = VideoFrameRateConverter.BuildFpsFilter(60, FrameRateConversionMode.MotionCompensated);
        Assert.Contains("minterpolate=", filter);
        Assert.Contains("fps=60", filter);
        Assert.Contains("mi_mode=mci", filter);
    }

    [Fact]
    public void Gate423_VideoFrameRateConverter_BuildsBlendFilter()
    {
        var filter = VideoFrameRateConverter.BuildFpsFilter(60, FrameRateConversionMode.FrameBlend);
        Assert.Contains("tblend=all_mode=average", filter);
        Assert.Contains("framerate=fps=60", filter);
    }

    [Fact]
    public void Gate424_VideoFrameRateConverter_BuildsFullFfmpegCli()
    {
        var args = VideoFrameRateConverter.BuildFfmpegArgs("in.mp4", "out.mp4", 60, FrameRateConversionMode.MotionCompensated, crf: 18);

        Assert.Contains("-i \"in.mp4\"", args);
        Assert.Contains("-vf \"minterpolate=", args);
        Assert.Contains("-c:v libx264 -crf 18", args);
        Assert.Contains("-c:a copy", args);
        Assert.Contains("\"out.mp4\"", args);
    }
}