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

import {
	AuthConfig,
	AuthTokens,
	ClientMetadataProvider,
	FetchAuthSessionOptions,
	KeyValueStorageInterface,
	defaultStorage,
} from '@aws-amplify/core';

import { refreshAuthTokens } from '../utils/refreshAuthTokens';

import { DefaultTokenStore } from './TokenStore';
import { TokenOrchestrator } from './TokenOrchestrator';
import { CognitoUserPoolTokenProviderType } from './types';

export class CognitoUserPoolsTokenProvider
	implements CognitoUserPoolTokenProviderType
{
	authTokenStore: DefaultTokenStore;
	tokenOrchestrator: TokenOrchestrator;
	constructor() {
		this.authTokenStore = new DefaultTokenStore();
		this.authTokenStore.setKeyValueStorage(defaultStorage);
		this.authTokenStore.setupNotify();
		this.tokenOrchestrator = new TokenOrchestrator();
		this.tokenOrchestrator.setAuthTokenStore(this.authTokenStore);
		this.tokenOrchestrator.setTokenRefresher(refreshAuthTokens);
	}

	getTokens(options: FetchAuthSessionOptions = {}): Promise<AuthTokens | null> {
		return this.tokenOrchestrator.getTokens(options);
	}

	setKeyValueStorage(keyValueStorage: KeyValueStorageInterface): void {
		this.authTokenStore.setKeyValueStorage(keyValueStorage);
	}

	/**
	 * Tears down the cross-tab storage listener held by the underlying token
	 * store. Intended for tests, HMR, and micro-frontend teardown; safe no-op
	 * when notify was never set up.
	 */
	teardownNotify(): void {
		this.authTokenStore.teardownNotify();
	}

	setClientMetadataProvider(
		clientMetadataProvider: ClientMetadataProvider,
	): void {
		this.tokenOrchestrator.setClientMetadataProvider(clientMetadataProvider);
	}

	setAuthConfig(authConfig: AuthConfig) {
		this.authTokenStore.setAuthConfig(authConfig);
		this.tokenOrchestrator.setAuthConfig(authConfig);
	}
}