using dy.net.utils;
using dy.net.Tests.TestInfrastructure;

namespace dy.net.Tests;

public class FFmpegHelperTests
{
    [Fact]
    public void ImageVideoArguments_WithoutAudio_ProduceVideoOnlyCommandWithoutNulls()
    {
        var arguments = FFmpegHelper.BuildImageVideoArguments(
            "/tmp/frames/frame_%03d.webp",
            null,
            "/tmp/output.mp4",
            0.33,
            "[0:v]scale=1080:1920[v]",
            1080,
            1920);

        Assert.DoesNotContain(arguments, value => value == null);
        Assert.Contains("-an", arguments);
        Assert.DoesNotContain("1:a", arguments);
        Assert.Equal(1, arguments.Count(value => value == "-i"));
        Assert.Equal("/tmp/output.mp4", arguments[^1]);
    }

    [Fact]
    public void ImageVideoArguments_WithAudio_MapAudioAndUseShortestDuration()
    {
        using var temporary = new TemporaryDirectory();
        var audioPath = Path.Combine(temporary.Path, "audio.mp3");
        File.WriteAllBytes(audioPath, new byte[] { 1, 2, 3 });
        var arguments = FFmpegHelper.BuildImageVideoArguments(
            "/tmp/frames/frame_%03d.webp",
            audioPath,
            "/tmp/output.mp4",
            0.5,
            "[0:v]scale=1080:1920[v]",
            1080,
            1920);

        Assert.DoesNotContain("-an", arguments);
        Assert.Contains("1:a", arguments);
        Assert.Contains("-shortest", arguments);
        Assert.Equal(2, arguments.Count(value => value == "-i"));
        Assert.Contains(audioPath, arguments);
    }
}