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/**
 * Copyright (C) 2015 Zalando SE (http://tech.zalando.com)
 *
 * 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.zalando.zauth.config;

import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;
import org.springframework.context.annotation.ScopedProxyMode;
import org.springframework.social.config.annotation.EnableSocial;
import org.springframework.social.connect.Connection;
import org.springframework.social.connect.ConnectionFactoryLocator;
import org.springframework.social.connect.ConnectionRepository;
import org.springframework.social.connect.UsersConnectionRepository;
import org.springframework.social.oauth2.ClientCredentialsSupplier;
import org.springframework.social.oauth2.JsonCredentialFileReader;
import org.springframework.social.zauth.api.ZAuth;
import org.springframework.social.zauth.config.AbstractZAuthSocialConfigurer;

/**
 * @author jbellmann
 */
@Configuration
@EnableSocial
@EnableConfigurationProperties({ ZAuthProperties.class })
public class SocialConfig extends AbstractZAuthSocialConfigurer {

    @Autowired
    private ZAuthProperties zauthProperties;

    @Autowired
    private UsersConnectionRepositoryConfigAdapter usersConnectionRepositoryConfigAdapter;

    @Override
    protected UsersConnectionRepository doGetUsersConnectionRepository(
            final ConnectionFactoryLocator connectionFactoryLocator) {

        return usersConnectionRepositoryConfigAdapter.configure(connectionFactoryLocator);
    }

    @Override
    protected ClientCredentialsSupplier getClientCredentialsSupplier() {
        return new JsonCredentialFileReader(zauthProperties.getCredentialsDirectoryPath());
    }

    @Override
    protected Map getCustomParameters() {
        return zauthProperties.getCustomParams();
    }

    @Override
    protected String getAuthorizationEndpoint() {
        return zauthProperties.getAuthorizationEndpoint();
    }

    @Override
    protected String getTokenEndpoint() {
        return zauthProperties.getTokenEndpoint();
    }

    /**
     * ZAuth api, can be injected into controller if needed.
     * 
     * @param repository
     * @return ZAuth
     * @see WebController
     */
    @ConditionalOnMissingBean
    @Bean
    @Scope(value = "request", proxyMode = ScopedProxyMode.INTERFACES)
    public ZAuth zAuth(final ConnectionRepository repository) {
        Connection connection = repository.findPrimaryConnection(ZAuth.class);
        return connection != null ? connection.getApi() : null;
    }
}