using VFXReviewWorker;
using Xunit;

namespace VFXReviewWorker.Tests;

public class PathMapperTests
{
    private static PathMapper Mapper(params (string from, string to)[] maps) =>
        new(maps.Select(m => new PathMapping { From = m.from, To = m.to }));

    [Fact]
    public void MapsUncToDriveLetter()
    {
        var mapper = Mapper(("//SAN/", "S:/"));
        Assert.Equal(@"S:\renders\UNG_S1\106\shot\v004", mapper.Map("//SAN/renders/UNG_S1/106/shot/v004"));
    }

    [Fact]
    public void MapsBackslashInputToo()
    {
        var mapper = Mapper(("//SAN/", "S:/"));
        Assert.Equal(@"S:\projects\a.aep", mapper.Map(@"\\SAN\projects\a.aep"));
    }

    [Fact]
    public void CaseInsensitiveMatch()
    {
        var mapper = Mapper(("//SAN/", "S:/"));
        Assert.Equal(@"S:\x", mapper.Map("//san/x"));
    }

    [Fact]
    public void FirstMatchingMappingWins()
    {
        var mapper = Mapper(("//SAN/renders/", "R:/"), ("//SAN/", "S:/"));
        Assert.Equal(@"R:\a", mapper.Map("//SAN/renders/a"));
        Assert.Equal(@"S:\projects\a", mapper.Map("//SAN/projects/a"));
    }

    [Fact]
    public void UnmappedPathPassesThroughWithLocalSeparators()
    {
        var mapper = Mapper(("//SAN/", "S:/"));
        Assert.Equal(@"D:\local\thing", mapper.Map("D:/local/thing"));
    }
}

public class PrepareOutputDirTests
{
    [Fact]
    public void ClearsOnlyFilesMatchingPatternPrefix()
    {
        var dir = Path.Combine(Path.GetTempPath(), "vfxr-test-" + Guid.NewGuid().ToString("N"));
        Directory.CreateDirectory(dir);
        try
        {
            File.WriteAllText(Path.Combine(dir, "SHOT_cmp_TT_v004.1001.exr"), "old");
            File.WriteAllText(Path.Combine(dir, "SHOT_cmp_TT_v004.1002.exr"), "old");
            File.WriteAllText(Path.Combine(dir, "unrelated-notes.txt"), "keep me");

            AerenderRunner.PrepareOutputDir(dir, "SHOT_cmp_TT_v004.[####].exr");

            Assert.False(File.Exists(Path.Combine(dir, "SHOT_cmp_TT_v004.1001.exr")));
            Assert.False(File.Exists(Path.Combine(dir, "SHOT_cmp_TT_v004.1002.exr")));
            Assert.True(File.Exists(Path.Combine(dir, "unrelated-notes.txt")));
        }
        finally
        {
            Directory.Delete(dir, recursive: true);
        }
    }

    /// <summary>
    /// The version folder holds the preview MOV/MP4 built from the same
    /// basename. A shot re-rendered at the same version — the "No preview"
    /// workflow, where the EXRs are re-exported unscaled and the earlier MOV is
    /// inherited as the review media — must not have that MOV cleared out from
    /// under it before aerender starts.
    /// </summary>
    [Fact]
    public void KeepsPreviewMediaSharingThePatternPrefix()
    {
        var dir = Path.Combine(Path.GetTempPath(), "vfxr-test-" + Guid.NewGuid().ToString("N"));
        Directory.CreateDirectory(dir);
        try
        {
            File.WriteAllText(Path.Combine(dir, "SHOT_cmp_TT_v004.1001.exr"), "old");
            File.WriteAllText(Path.Combine(dir, "SHOT_cmp_TT_v004.mov"), "delivery mov");
            File.WriteAllText(Path.Combine(dir, "SHOT_cmp_TT_v004.mp4"), "review mp4");

            AerenderRunner.PrepareOutputDir(dir, "SHOT_cmp_TT_v004.[####].exr");

            Assert.False(File.Exists(Path.Combine(dir, "SHOT_cmp_TT_v004.1001.exr")));
            Assert.True(File.Exists(Path.Combine(dir, "SHOT_cmp_TT_v004.mov")));
            Assert.True(File.Exists(Path.Combine(dir, "SHOT_cmp_TT_v004.mp4")));
        }
        finally
        {
            Directory.Delete(dir, recursive: true);
        }
    }

    [Fact]
    public void ClearsOnlyThisVersionsFrames()
    {
        var dir = Path.Combine(Path.GetTempPath(), "vfxr-test-" + Guid.NewGuid().ToString("N"));
        Directory.CreateDirectory(dir);
        try
        {
            File.WriteAllText(Path.Combine(dir, "SHOT_cmp_TT_v004.1001.exr"), "old");
            File.WriteAllText(Path.Combine(dir, "SHOT_cmp_TT_v005.1001.exr"), "other version");
            File.WriteAllText(Path.Combine(dir, "OTHERSHOT_cmp_TT_v004.1001.exr"), "other shot");

            AerenderRunner.PrepareOutputDir(dir, "SHOT_cmp_TT_v004.[####].exr");

            Assert.False(File.Exists(Path.Combine(dir, "SHOT_cmp_TT_v004.1001.exr")));
            Assert.True(File.Exists(Path.Combine(dir, "SHOT_cmp_TT_v005.1001.exr")));
            Assert.True(File.Exists(Path.Combine(dir, "OTHERSHOT_cmp_TT_v004.1001.exr")));
        }
        finally
        {
            Directory.Delete(dir, recursive: true);
        }
    }

    [Fact]
    public void CreatesMissingDirectory()
    {
        var dir = Path.Combine(Path.GetTempPath(), "vfxr-test-" + Guid.NewGuid().ToString("N"), "v001");
        try
        {
            AerenderRunner.PrepareOutputDir(dir, "X.[####].exr");
            Assert.True(Directory.Exists(dir));
        }
        finally
        {
            Directory.Delete(Path.GetDirectoryName(dir)!, recursive: true);
        }
    }
}