using System;
using Paca.Core;
using Xunit;

namespace Paca.Tests.Core;

public class AudioDynamicRangeCompressorGateTests
{
    [Fact]
    public void Gate429_AudioDynamicRangeCompressor_BuildsPresetFilter_Accurately()
    {
        var filter = AudioDynamicRangeCompressor.BuildFilter(CompressorPreset.NightListening);

        Assert.Contains("threshold=-24dB", filter);
        Assert.Contains("ratio=6", filter);
        Assert.Contains("alimiter=limit=-1dB", filter);
    }

    [Fact]
    public void Gate430_AudioDynamicRangeCompressor_BuildsCustomCompressorFilter()
    {
        var filter = AudioDynamicRangeCompressor.BuildCustomFilter(
            thresholdDb: -22.0,
            ratio: 5.0,
            attackMs: 8.0,
            releaseMs: 120.0,
            makeupDb: 5.0,
            limitPeakDb: -0.5
        );

        Assert.Contains("threshold=-22dB", filter);
        Assert.Contains("ratio=5", filter);
        Assert.Contains("attack=8", filter);
        Assert.Contains("release=120", filter);
        Assert.Contains("makeup=5dB", filter);
        Assert.Contains("alimiter=limit=-0.5dB", filter);
    }

    [Fact]
    public void Gate431_AudioDynamicRangeCompressor_HandlesPassthrough()
    {
        var filter = AudioDynamicRangeCompressor.BuildFilter(CompressorPreset.None);
        Assert.Equal("anull", filter);
    }

    [Fact]
    public void Gate432_AudioDynamicRangeCompressor_BuildsFfmpegArgs_Properly()
    {
        var args = AudioDynamicRangeCompressor.BuildFfmpegArgs("in.mp4", "out.mp4", CompressorPreset.NightListening, copyVideo: true);

        Assert.Contains("-i \"in.mp4\"", args);
        Assert.Contains("-c:v copy", args);
        Assert.Contains("-af \"acompressor=", args);
        Assert.Contains("-c:a aac -b:a 192k", args);
        Assert.Contains("\"out.mp4\"", args);
    }
}