using Explorer.Application;

namespace Explorer.Application.Tests;

public class FfmpegLocatorTests
{
    [Fact]
    public void Prefers_the_configured_path_when_it_exists()
    {
        var path = @"C:\Tools\ffmpeg.exe";
        Assert.Equal(path, FfmpegLocator.Find(path, fileExists: p => p == path, pathVariable: ""));
    }

    [Fact]
    public void Finds_ffmpeg_on_PATH_when_not_configured()
    {
        var found = FfmpegLocator.Find(
            null,
            fileExists: p => p.Equals(@"D:\bin\ffmpeg.exe", StringComparison.OrdinalIgnoreCase),
            pathVariable: @"C:\Windows;D:\bin");
        Assert.Equal(@"D:\bin\ffmpeg.exe", found);
    }

    [Fact]
    public void Returns_null_when_ffmpeg_is_missing()
    {
        Assert.Null(FfmpegLocator.Find(null, fileExists: _ => false, pathVariable: @"C:\none"));
        Assert.Contains("FFmpeg", FfmpegLocator.MissingHint, StringComparison.OrdinalIgnoreCase);
    }
}