/*
 * Copyright 2002-2013 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
 *
 *      http://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.security.oauth2.config.annotation.builders;

import java.util.HashSet;
import java.util.Set;

import javax.sql.DataSource;

import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.oauth2.provider.ClientDetails;
import org.springframework.security.oauth2.provider.ClientDetailsService;
import org.springframework.security.oauth2.provider.client.JdbcClientDetailsService;
import org.springframework.util.Assert;

/**
 * @author Dave Syer
 * 
 */
public class JdbcClientDetailsServiceBuilder extends ClientDetailsServiceBuilder<JdbcClientDetailsServiceBuilder> {

	private Set<ClientDetails> clientDetails = new HashSet<ClientDetails>();

	private DataSource dataSource;

	private PasswordEncoder passwordEncoder; // for writing client secrets

	public JdbcClientDetailsServiceBuilder dataSource(DataSource dataSource) {
		this.dataSource = dataSource;
		return this;
	}

	public JdbcClientDetailsServiceBuilder passwordEncoder(PasswordEncoder passwordEncoder) {
		this.passwordEncoder = passwordEncoder;
		return this;
	}

	@Override
	protected void addClient(String clientId, ClientDetails value) {
		clientDetails.add(value);
	}

	@Override
	protected ClientDetailsService performBuild() {
		Assert.state(dataSource != null, "You need to provide a DataSource");
		JdbcClientDetailsService clientDetailsService = new JdbcClientDetailsService(dataSource);
		if (passwordEncoder != null) {
			// This is used to encode secrets as they are added to the database (if it isn't set then the user has top
			// pass in pre-encoded secrets)
			clientDetailsService.setPasswordEncoder(passwordEncoder);
		}
		for (ClientDetails client : clientDetails) {
			clientDetailsService.addClientDetails(client);
		}
		return clientDetailsService;
	}

}