using Shouldly;

namespace ZB.MOM.WW.OtOpcUa.AdminUI.Tests;

/// <summary>
///     Reads an AdminUI source file for a source-scan pin. The repo has no bUnit, so Razor wiring that a
///     unit test cannot render is pinned by scanning the markup; it proves the wiring exists, not that it
///     renders correctly (the docker-dev live pass covers that).
/// </summary>
internal static class AdminUiSource
{
    /// <summary>Reads a file under <c>src/Server/ZB.MOM.WW.OtOpcUa.AdminUI</c>.</summary>
    /// <param name="relativeSegments">Path segments below the AdminUI project directory.</param>
    /// <returns>The file text.</returns>
    public static string Read(params string[] relativeSegments)
    {
        var dir = new DirectoryInfo(AppContext.BaseDirectory);
        while (dir is not null && !File.Exists(Path.Combine(dir.FullName, "ZB.MOM.WW.OtOpcUa.slnx")))
            dir = dir.Parent;
        dir.ShouldNotBeNull("could not locate the repository root (no ZB.MOM.WW.OtOpcUa.slnx above the test binary)");

        var parts = new[] { dir!.FullName, "src", "Server", "ZB.MOM.WW.OtOpcUa.AdminUI" }.Concat(relativeSegments).ToArray();
        return File.ReadAllText(Path.Combine(parts));
    }
}