type BetterAuthEnv = Record<string, string | undefined>;
const schemaGenerationSecret = "convex-better-auth-schema-generation-secret";

export function getBetterAuthServerConfig(
  env: BetterAuthEnv,
  options: { allowMissingSecret?: boolean } = {},
) {
  const secret = env.BETTER_AUTH_SECRET?.trim();

  if (!secret) {
    if (options.allowMissingSecret) {
      return {
        appUrl:
          env.BETTER_AUTH_URL?.trim() ||
          env.NEXT_PUBLIC_APP_URL?.trim() ||
          "http://localhost:3000",
        secret: schemaGenerationSecret,
      };
    }

    throw new Error("Missing BETTER_AUTH_SECRET in the environment.");
  }

  return {
    appUrl:
      env.BETTER_AUTH_URL?.trim() ||
      env.NEXT_PUBLIC_APP_URL?.trim() ||
      "http://localhost:3000",
    secret,
  };
}