#include "opmysql.h"
#include <mysql_driver.h>
#include <mysql_connection.h>
#include <cppconn/prepared_statement.h>
#include <cppconn/resultset.h>
#include <cppconn/statement.h>
#include <cppconn/exception.h>
#include <hv/hlog.h>
#include <sstream>  
#include "openjson.h"

OpDatabase OpDatabase::m_instance;

OpDatabase::OpDatabase()
	:m_pDbConnection(nullptr)
{
}

OpDatabase::~OpDatabase()
{
	//CloseDatabase();
}

OpDatabase* OpDatabase::getInstance()
{
	return &m_instance;
}

bool OpDatabase::OpenDatabase(const std::string& server, const std::string& dbuser, const std::string& database)
{
	// 打开数据库
	try
	{
		// 数据库连接配置
		//std::string server = "tcp://127.0.0.1:3306";
		//std::string dbuser = "root";
		//std::string password = "Hj57471000";
		std::string password = "L2ysc1s1kr";
		//std::string database = "hjems";

		// 创建连接
		sql::mysql::MySQL_Driver* driver;
		driver = sql::mysql::get_mysql_driver_instance();
		//m_pDbConnection.reset(driver->connect(server, dbuser, password));
		m_pDbConnection = driver->connect(server, dbuser, password);

		if (!m_pDbConnection)
		{
			hloge("Failed to connect to database.");
			return false;
		}

		// 设置为使用指定数据库
		m_pDbConnection->setSchema(database);

		return true;
	}
	catch (sql::SQLException& e)
	{
		std::ostringstream ss;
		ss << "SQLException: " << e.what();
		ss<< " (MySQL error code: " << e.getErrorCode();
		ss << ", SQLState: " << e.getSQLState() << " )";
		hloge("Failed to connect to database: %s",ss.str().c_str());
		return false;
	}
}

// 关闭数据库连接
void OpDatabase::CloseDatabase()
{
	m_pDbConnection->close();
	//delete m_pDbConnection;
}


void OpDatabase::InsertMessage(const std::string& ts, const std::string& msg_type, const std::string& fsu, const std::string& content, int topic, int dev_id)
{
	const char* insertSql = "INSERT INTO tbl_data (data_timestamp, data_type, FsuCode, data_content, topic, device_id) VALUES (?,?,?,?,?,?);";
	// 创建预编译的prepared statement
	std::unique_ptr<sql::PreparedStatement> insertStmt(m_pDbConnection->prepareStatement(insertSql));

	// 绑定插入数据的参数
	insertStmt->setString(1, ts);
	insertStmt->setString(2, msg_type);
	insertStmt->setString(3, fsu);
	insertStmt->setString(4, content);
	insertStmt->setInt(5, topic);
	insertStmt->setInt(6, dev_id);

	// 执行插入操作
	int rowsAffected = insertStmt->executeUpdate();

	// 检查插入操作是否成功
	if (rowsAffected > 0)
	{
		hlogi( "New message inserted successfully." );
	}
	else
	{
		hloge( "No rows affected during insert operation." );
	}
}