package com.zteits.oa.configuration.druid;

import java.sql.SQLException;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
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.util.StringUtils;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;

/**
 * 
 * 
 * Copyright: Copyright (c) 2017  zteits
 * 
 * @ClassName: DruidAutoConfiguration.java
 * @Description: 
 * @version: v1.0.0
 * @author: liuzl
 * @date: 2017年4月19日   下午7:52:52 
 * Modification History:
 * Date             Author          Version            Description
 *---------------------------------------------------------*
 * 2017年4月19日      liuzl           v1.0.0               创建
 */
@Configuration

@EnableConfigurationProperties(DruidProperties.class)
@ConditionalOnClass(DruidDataSource.class)
@ConditionalOnProperty(prefix = "druid", name = "url")
@AutoConfigureBefore(DataSourceAutoConfiguration.class)
public class DruidAutoConfiguration {

    @Autowired
    private DruidProperties properties;

    @Bean
    public DataSource dataSource() throws SQLException {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setUrl(properties.getUrl());
        dataSource.setUsername(properties.getUsername());
        dataSource.setPassword(properties.getPassword());
        if (properties.getInitialSize() > 0) {
            dataSource.setInitialSize(properties.getInitialSize());
        }
        if (properties.getMinIdle() > 0) {
            dataSource.setMinIdle(properties.getMinIdle());
        }
        if (properties.getMaxActive() > 0) {
            dataSource.setMaxActive(properties.getMaxActive());
        }
        if(!StringUtils.isEmpty(properties.getFilters())){
        	dataSource.setFilters(properties.getFilters());
        }
        if(!StringUtils.isEmpty(properties.getValidationQuery())){
        	dataSource.setValidationQuery(properties.getValidationQuery());
        }
        if(properties.getTimeBetweenEvictionRunsMillis() > 0){
        	dataSource.setTimeBetweenEvictionRunsMillis(properties.getTimeBetweenEvictionRunsMillis());
        }
        if(properties.getMinEvictableIdleTimeMillis() > 0){
        	dataSource.setMinEvictableIdleTimeMillis(properties.getMinEvictableIdleTimeMillis());
        }
        if(properties.getMaxWait() > 0){
        	dataSource.setMaxWait(properties.getMaxWait());
        }
        dataSource.setTestOnBorrow(properties.isTestOnBorrow());
        dataSource.setTestOnReturn(properties.isTestOnReturn());
        dataSource.setTestWhileIdle(properties.isTestOnWhileIdle());
        
        try {
            dataSource.init();
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
        return dataSource;
    }

    @Bean
    public ServletRegistrationBean DruidStatViewServle() {
        //org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册.
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        //添加初始化参数：initParams

        //白名单：
        //servletRegistrationBean.addInitParameter("allow","192.168.1.106");
        //IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.
        // servletRegistrationBean.addInitParameter("deny", "192.168.1.73");
        //登录查看信息的账号密码.
        servletRegistrationBean.addInitParameter("loginUsername","admin");
        servletRegistrationBean.addInitParameter("loginPassword","123456");
        //是否能够重置数据.
        servletRegistrationBean.addInitParameter("resetEnable","false");
        return servletRegistrationBean;
    }


    @Bean
    public FilterRegistrationBean druidStatFilter(){
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
        //添加过滤规则.
        filterRegistrationBean.addUrlPatterns("/*");
        //添加不需要忽略的格式信息.
        filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        return filterRegistrationBean;
    }

}