/*
 * Copyright 2019-2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.cloud.dataflow.server.config.cloudfoundry;

import org.cloudfoundry.reactor.TokenProvider;
import org.cloudfoundry.reactor.tokenprovider.PasswordGrantTokenProvider;
import org.cloudfoundry.reactor.tokenprovider.PasswordGrantTokenProvider.Builder;

import org.springframework.cloud.deployer.spi.cloudfoundry.CloudFoundryConnectionProperties;
import org.springframework.util.StringUtils;

/**
 * @author David Turanski
 **/
public class CloudFoundryPlatformTokenProvider {

	private final CloudFoundryPlatformProperties platformProperties;

	public CloudFoundryPlatformTokenProvider(
		CloudFoundryPlatformProperties platformProperties) {
		this.platformProperties = platformProperties;
	}

	public TokenProvider tokenProvider(String account) {
		CloudFoundryConnectionProperties connectionProperties = platformProperties.accountProperties(account)
				.getConnection();
		Builder tokenProviderBuilder = PasswordGrantTokenProvider.builder()
				.username(connectionProperties.getUsername())
				.password(connectionProperties.getPassword())
				.loginHint(connectionProperties.getLoginHint());
		if (StringUtils.hasText(connectionProperties.getClientId())) {
			tokenProviderBuilder.clientId(connectionProperties.getClientId());
		}
		if (StringUtils.hasText(connectionProperties.getClientSecret())) {
			tokenProviderBuilder.clientSecret(connectionProperties.getClientSecret());
		}
		return tokenProviderBuilder.build();
	}
}
