package com.ruoyi.framework.config;

import java.sql.SQLException;
import javax.sql.DataSource;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;

/**
 * Druid数据库信息配置加载
 * 
 * @author ruoyi
 */
@Configuration
public class DruidConfig
{
    private static final Logger log = LoggerFactory.getLogger(DruidConfig.class);
    
    @Value("${spring.datasource.url}")
    private String dbUrl;

    @Value("${spring.datasource.username}")
    private String username;

    @Value("${spring.datasource.password}")
    private String password;

    @Value("${spring.datasource.driverClassName}")
    private String driverClassName;

    @Value("${spring.datasource.initialSize}")
    private int initialSize;

    @Value("${spring.datasource.minIdle}")
    private int minIdle;

    @Value("${spring.datasource.maxActive}")
    private int maxActive;

    @Value("${spring.datasource.maxWait}")
    private int maxWait;

    @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
    private int timeBetweenEvictionRunsMillis;

    @Value("${spring.datasource.minEvictableIdleTimeMillis}")
    private int minEvictableIdleTimeMillis;

    @Value("${spring.datasource.validationQuery}")
    private String validationQuery;

    @Value("${spring.datasource.testWhileIdle}")
    private boolean testWhileIdle;

    @Value("${spring.datasource.testOnBorrow}")
    private boolean testOnBorrow;

    @Value("${spring.datasource.testOnReturn}")
    private boolean testOnReturn;

    @Value("${spring.datasource.poolPreparedStatements}")
    private boolean poolPreparedStatements;

    @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
    private int maxPoolPreparedStatementPerConnectionSize;

    @Value("${spring.datasource.filters}")
    private String filters;

    @Value("{spring.datasource.connectionProperties}")
    private String connectionProperties;

    @Bean(initMethod = "init", destroyMethod = "close") /** 声明其为Bean实例 */
    @Primary /** 在同样的DataSource中，首先使用被标注的DataSource */
    public DataSource dataSource()
    {
        DruidDataSource datasource = new DruidDataSource();

        datasource.setUrl(this.dbUrl);
        datasource.setUsername(username);
        datasource.setPassword(password);
        datasource.setDriverClassName(driverClassName);

        /** configuration */
        datasource.setInitialSize(initialSize);
        datasource.setMinIdle(minIdle);
        datasource.setMaxActive(maxActive);
        datasource.setMaxWait(maxWait);
        datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
        datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
        datasource.setValidationQuery(validationQuery);
        datasource.setTestWhileIdle(testWhileIdle);
        datasource.setTestOnBorrow(testOnBorrow);
        datasource.setTestOnReturn(testOnReturn);
        datasource.setPoolPreparedStatements(poolPreparedStatements);
        datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
        try
        {
            datasource.setFilters(filters);
        }
        catch (SQLException e)
        {
            log.error("druid configuration initialization filter", e);
        }
        datasource.setConnectionProperties(connectionProperties);

        return datasource;
    }

    /**
     * 注册一个StatViewServlet 相当于在web.xml中声明了一个servlet
     */
    @Bean
    public ServletRegistrationBean druidServlet()
    {
        ServletRegistrationBean reg = new ServletRegistrationBean();
        reg.setServlet(new StatViewServlet());
        reg.addUrlMappings("/monitor/druid/*");
        /** 白名单 */
        // reg.addInitParameter("allow", "10.211.61.45,127.0.0.1,123.207.20.136");
        /** IP黑名单(共同存在时，deny优先于allow) */
        // reg.addInitParameter("deny", "10.211.61.4");
        /** 是否能够重置数据 禁用HTML页面上的“Reset All”功能 */
        reg.addInitParameter("resetEnable", "false");
        return reg;
    }

    /**
     * 注册一个：filterRegistrationBean 相当于在web.xml中声明了一个Filter
     */
    @Bean
    public FilterRegistrationBean filterRegistrationBean()
    {
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
        filterRegistrationBean.setFilter(new WebStatFilter());
        /** 添加过滤规则. */
        filterRegistrationBean.addUrlPatterns("/*");
        /** 监控选项滤器 */
        filterRegistrationBean.addInitParameter("DruidWebStatFilter", "/*");
        /** 添加不需要忽略的格式信息. */
        filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/monitor/druid/*");
        /** 配置profileEnable能够监控单个url调用的sql列表 */
        filterRegistrationBean.addInitParameter("profileEnable", "true");
        /** 当前的cookie的用户 */
        filterRegistrationBean.addInitParameter("principalCookieName", "USER_COOKIE");
        /** 当前的session的用户 */
        filterRegistrationBean.addInitParameter("principalSessionName", "USER_SESSION");
        return filterRegistrationBean;
    }
}
