using System;
using Paca.Mobile.Core;
using Xunit;

namespace Paca.Tests.Core;

public class TranscodingPresetEngineGateTests
{
    [Fact]
    public void Gate245_TranscodingPresetEngine_BuildsRemuxArguments_WhenCompatible()
    {
        var args = TranscodingPresetEngine.BuildFfmpegArgs("input.mkv", "output.mp4", TranscodePreset.FastRemux);

        Assert.Contains("-c:v copy", args);
        Assert.Contains("-c:a copy", args);
        Assert.Contains("-movflags +faststart", args);
    }

    [Fact]
    public void Gate246_TranscodingPresetEngine_BuildsMobileCompatibilityArguments()
    {
        var args = TranscodingPresetEngine.BuildFfmpegArgs("input.webm", "output.mp4", TranscodePreset.MobileCompatibleH264);

        Assert.Contains("-c:v libx264", args);
        Assert.Contains("-c:a aac", args);
        Assert.Contains("-movflags +faststart", args);
    }

    [Fact]
    public void Gate247_TranscodingPresetEngine_BuildsAudioExtractionArguments()
    {
        var args = TranscodingPresetEngine.BuildFfmpegArgs("video.mp4", "audio.mp3", TranscodePreset.AudioMp3High);

        Assert.Contains("-vn", args);
        Assert.Contains("-c:a libmp3lame", args);
        Assert.Contains("-b:a 320k", args);
    }

    [Fact]
    public void Gate248_TranscodingPresetEngine_EstimatesOutputFilename()
    {
        Assert.Equal("clip.mp3", TranscodingPresetEngine.GetTargetFileName("clip.mkv", TranscodePreset.AudioMp3High));
        Assert.Equal("lecture.mp4", TranscodingPresetEngine.GetTargetFileName("lecture.webm", TranscodePreset.MobileCompatibleH264));
        Assert.Equal("video.mp4", TranscodingPresetEngine.GetTargetFileName("video.mkv", TranscodePreset.FastRemux));
    }
}