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

import {
	PasskeyErrorCode,
	assertPasskeyError,
	handlePasskeyAuthenticationError,
} from './errors';
import { getIsPasskeySupported } from './getIsPasskeySupported';
import {
	deserializeJsonToPkcGetOptions,
	serializePkcWithAssertionToJson,
} from './serde';
import {
	PasskeyGetOptionsJson,
	assertCredentialIsPkcWithAuthenticatorAssertionResponse,
} from './types';

export const getPasskey = async (input: PasskeyGetOptionsJson) => {
	try {
		const isPasskeySupported = getIsPasskeySupported();

		assertPasskeyError(
			isPasskeySupported,
			PasskeyErrorCode.PasskeyNotSupported,
		);

		const passkeyGetOptions = deserializeJsonToPkcGetOptions(input);

		const credential = await navigator.credentials.get({
			publicKey: passkeyGetOptions,
		});

		assertCredentialIsPkcWithAuthenticatorAssertionResponse(credential);

		return serializePkcWithAssertionToJson(credential);
	} catch (err: unknown) {
		throw handlePasskeyAuthenticationError(err);
	}
};