// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

import { urlSafeEncode } from 'aws-amplify/adapter-core/internals';
import { generateCodeVerifier, generateState } from 'aws-amplify/adapter-core';

export const createAuthFlowProofs = ({
	customState,
}: {
	customState?: string;
}): {
	codeVerifier: ReturnType<typeof generateCodeVerifier>;
	state: string;
} => {
	const codeVerifier = generateCodeVerifier(128);
	const randomState = generateState();
	const state = customState
		? `${randomState}-${urlSafeEncode(customState)}`
		: randomState;

	return { codeVerifier, state };
};