package com.ynxbd.common.config.db;

import com.alibaba.druid.pool.DruidDataSource;
import com.ynxbd.common.helper.ProperHelper;
import com.ynxbd.common.helper.common.FileHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;
import java.util.Properties;

public class PacsDB {
    private final static Logger log = LoggerFactory.getLogger(PacsDB.class);

    private static DruidDataSource dataSource;

    static {
        dataSource = init();
    }

    private static synchronized DruidDataSource init() {
        if (dataSource != null) {
            return dataSource;
        }
        final DruidDataSource dataSource = new DruidDataSource();

        ProperHelper config = DataBase.getConfig();

        dataSource.setDriverClassName(config.getString("pacs.driverClassName"));
        dataSource.setUrl(config.getString("pacs.jdbcUrl"));
        dataSource.setUsername(config.getString("pacs.username"));
        dataSource.setPassword(config.getString("pacs.password"));
        // 连接池配置
        Integer min = config.getInteger("pacs.minIdle");
        if (min != null) {
            dataSource.setMinIdle(min);
        }
        Integer max = config.getInteger("pacs.maxActive");
        if (max != null) {
            dataSource.setMaxActive(max);
        }
        Integer initialSize = config.getInteger("pacs.initialSize");
        if (initialSize != null) {
            dataSource.setInitialSize(initialSize);
        }

        dataSource.setMaxWait(60 * 1000); // 60s
        // 异步初始化连接
        dataSource.setAsyncInit(true);
        dataSource.setValidationQuery("SELECT 1");
        // 安全性
        dataSource.setTestWhileIdle(true);
        dataSource.setTestOnBorrow(false);
        dataSource.setTestOnReturn(false);
        // 打开PSCache，并且指定每个连接上PSCache的大小
        dataSource.setPoolPreparedStatements(true);
        dataSource.setMaxPoolPreparedStatementPerConnectionSize(120);
        // 连接泄露检查
        dataSource.setRemoveAbandonedTimeoutMillis(300000);
        // 关闭连接时输出错误日志，这样出现连接泄露时可以通过错误日志定位忘记关闭连接的位置
        dataSource.setLogAbandoned(true);
        dataSource.setMinEvictableIdleTimeMillis(300000);
        // 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
        dataSource.setTimeBetweenConnectErrorMillis(60000);

        return dataSource;
    }

    /**
     * 获取连接
     */
    public static Connection getConnection() {
        Connection conn = null;
        try {
            if (dataSource == null) {
                dataSource = init();
            }
            conn = dataSource.getConnection();
        } catch (SQLException e) {
            log.error("Pacs数据库连接失败！{}, {}", dataSource.getUrl(), e.getMessage());
            if (dataSource != null) {
                dataSource.close();
                dataSource = null;
            }
        }
        return conn;
    }

    public static <T> List<T> select(String sql, Class<T> clazz, DataBase.IPS ips) {
        return DataBase.select(getConnection(), sql, clazz, ips);
    }

    public static <T> List<T> select(String sql, Class<T> clazz) {
        return DataBase.select(getConnection(), sql, clazz, null);
    }
}