/*
 * Copyright 2002-2019 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 com.funtl.myshop.plus.business.configure;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.oauth2.config.annotation.configurers.ClientDetailsServiceConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerEndpointsConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerSecurityConfigurer;
import org.springframework.security.oauth2.provider.ClientDetailsService;
import org.springframework.security.oauth2.provider.client.JdbcClientDetailsService;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.provider.token.store.redis.RedisTokenStore;

import javax.sql.DataSource;

/**
 * 认证服务器
 * <p>
 * Description:
 * </p>
 *
 * @author Lusifer
 * @version v1.0.0
 * @date 2019-07-29 13:27:21
 * @see com.funtl.myshop.plus.business.configure
 */
@Configuration
@EnableAuthorizationServer
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {

    @Autowired
    private BCryptPasswordEncoder passwordEncoder;

    /**
     * 注入用于支持 password 模式
     */
    @Autowired
    private AuthenticationManager authenticationManager;

    @Autowired
    private RedisConnectionFactory redisConnectionFactory;

    @Bean
    @Primary
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource dataSource() {
        // 配置数据源(注意,我使用的是 HikariCP 连接池),以上注解是指定数据源,否则会有冲突
        return DataSourceBuilder.create().build();
    }

    @Bean
    public TokenStore tokenStore() {
        // 基于 JDBC 实现,令牌保存到数据库
//        return new JdbcTokenStore(dataSource());
        return new RedisTokenStore(redisConnectionFactory);
    }

    @Bean
    public ClientDetailsService jdbcClientDetailsService() {
        // 基于 JDBC 实现,需要事先在数据库配置客户端信息
        return new JdbcClientDetailsService(dataSource());
    }

    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        endpoints
                // 用于支持密码模式
                .authenticationManager(authenticationManager)
                .tokenStore(tokenStore());
    }

    @Override
    public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
        security
                // 允许客户端访问 /oauth/check_token 检查 token
                .checkTokenAccess("isAuthenticated()")
                .allowFormAuthenticationForClients();
    }

    /**
     * 配置客户端
     *
     * @param clients
     * @throws Exception
     */
    @Override
    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
        // 客户端配置
        clients.withClientDetails(jdbcClientDetailsService());
    }
}