namespace sh.actions.package_cleanup;

public static class ConfigurationExtension
{
    private const string MissingConfigurationError = "Configuration variable '{0}' is required but was not found.";

    private static void ValidateConfigurationVariable(IConfiguration configuration, string key)
    {
        if (string.IsNullOrWhiteSpace(configuration[key]))
        {
            throw new InvalidOperationException(string.Format(MissingConfigurationError, key));
        }
    }

    public static IConfigurationBuilder EnsureGiteaConfig(this IConfigurationBuilder builder)
    {
        var configuration = builder.Build();
        var requiredKeys = new[] { "URL", "OWNER", "TYPES", "NAME", "API_TOKEN" };

        foreach (var key in requiredKeys)
        {
            ValidateConfigurationVariable(configuration, key);
        }

        return builder;
    }
}