namespace Nonemm.Keying.Tests;

public class VoiceFilesTests
{
    [Fact]
    public void AMessageNamesTheFilesItPlays()
    {
        IReadOnlyList<string> names = VoiceFiles.NamesIn(@"OM3KFF\Cq.wav, OM3KFF\Exchange.wav");

        Assert.Equal([@"OM3KFF\Cq.wav", @"OM3KFF\Exchange.wav"], names);
    }

    /// A phone message that is words rather than a file name is what the
    /// operator would say himself, and no keyer can say it.
    [Fact]
    public void TextThatNamesNoRecordingIsNoFile()
    {
        Assert.Empty(VoiceFiles.NamesIn("CQ CONTEST OM5M"));
    }

    /// N1MM writes the separator as a backslash whatever it is running on.
    [Fact]
    public void TheFolderSeparatorIsN1mmsWhateverThisRunsOn()
    {
        VoiceFiles files = new("/home/op/Wav");

        Assert.Equal(
            Path.Combine("/home/op/Wav", "OM3KFF", "Cq.wav"),
            files.PathOf(@"OM3KFF\Cq.wav"));
    }

    /// A rooted name would be combined away and would play a file from
    /// somewhere else entirely.
    [Fact]
    public void ANameIsAlwaysUnderTheWavFolder()
    {
        VoiceFiles files = new("/home/op/Wav");

        Assert.Equal(Path.Combine("/home/op/Wav", "etc", "shadow"), files.PathOf("/etc/shadow"));
    }

    [Fact]
    public void TheFirstRecordingThatIsNotThereIsNamed()
    {
        string folder = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
        Directory.CreateDirectory(folder);
        try
        {
            File.WriteAllText(Path.Combine(folder, "Cq.wav"), "");
            VoiceFiles files = new(folder);

            Assert.Null(files.FirstMissing("Cq.wav"));
            Assert.Equal("Exchange.wav", files.FirstMissing("Cq.wav,Exchange.wav"));
        }
        finally
        {
            Directory.Delete(folder, recursive: true);
        }
    }
}