using System.Reflection;

namespace StellaOps.Evidence.Validation;

internal static class SchemaLoader
{
    public static string LoadSchema(string fileName)
    {
        var assembly = Assembly.GetExecutingAssembly();
        var resourceName = assembly.GetManifestResourceNames()
            .FirstOrDefault(name => name.EndsWith(fileName, StringComparison.OrdinalIgnoreCase));

        if (resourceName is null)
        {
            throw new InvalidOperationException($"Schema resource not found: {fileName}");
        }

        using var stream = assembly.GetManifestResourceStream(resourceName);
        if (stream is null)
        {
            throw new InvalidOperationException($"Schema resource not available: {resourceName}");
        }

        using var reader = new StreamReader(stream);
        return reader.ReadToEnd();
    }
}