using ClaudeDo.Ui.Services;

namespace ClaudeDo.Ui.Tests;

public sealed class RepoScannerTests : IDisposable
{
    private readonly string _root =
        Path.Combine(Path.GetTempPath(), "repo-scan-" + Guid.NewGuid().ToString("N"));

    public RepoScannerTests() => Directory.CreateDirectory(_root);

    public void Dispose()
    {
        try { Directory.Delete(_root, recursive: true); } catch { }
    }

    private string MakeDir(string name)
    {
        var p = Path.Combine(_root, name);
        Directory.CreateDirectory(p);
        return p;
    }

    [Fact]
    public void Scan_ReturnsSubfoldersWithGitDirectory()
    {
        var repo = MakeDir("repo-a");
        Directory.CreateDirectory(Path.Combine(repo, ".git"));

        var result = RepoScanner.Scan(_root);

        Assert.Single(result);
        Assert.Equal("repo-a", result[0].Name);
        Assert.Equal(repo, result[0].FullPath);
    }

    [Fact]
    public void Scan_TreatsDotGitFileAsRepo()
    {
        var repo = MakeDir("worktree-repo");
        File.WriteAllText(Path.Combine(repo, ".git"), "gitdir: ../somewhere");

        var result = RepoScanner.Scan(_root);

        Assert.Single(result);
        Assert.Equal("worktree-repo", result[0].Name);
    }

    [Fact]
    public void Scan_IgnoresPlainFolders()
    {
        MakeDir("not-a-repo");

        var result = RepoScanner.Scan(_root);

        Assert.Empty(result);
    }

    [Fact]
    public void Scan_IsNotRecursive()
    {
        var nested = MakeDir(Path.Combine("outer", "inner"));
        Directory.CreateDirectory(Path.Combine(nested, ".git"));
        // outer itself has no .git

        var result = RepoScanner.Scan(_root);

        Assert.Empty(result);
    }

    [Fact]
    public void Scan_ReturnsEmptyForMissingFolder()
    {
        var result = RepoScanner.Scan(Path.Combine(_root, "does-not-exist"));

        Assert.Empty(result);
    }
}