#include "DBStorage.h"
#include <QDebug>
#include <QJsonDocument>
#include <QJsonArray>
#include <QJsonObject>
#include <QSqlError>
#include <QException>
#include <QDateTime>


// static const QString clientID = "dbStorage";

enum emOpenError
{
    emDBError_Success,
    emDBError_User,
    emDBError_Server,
    emDBError_Driver,
    emDBError_Config
};
inline QString connectName()
{
    return QString("thread%1").arg((std::size_t)QThread::currentThreadId());
}

DBStorage::DBStorage()	 {
    // mqtt = new MQTTClient();
    //tdclient->start();
}
DBStorage::~DBStorage(){
    // delete mqtt;
    qDebug() << __FILE__ << __FUNCTION__<< __LINE__;
}
void DBStorage::Run(const ConsumerInfo& ci)
{
    // QString host = "192.168.9.6";
    // quint16 port = 1883;
    // QString usr = "root";
    // QString passwd = "N6pNXbZjspDRqNGnxMmc";
    // QString clientID = "dbStorage";

    // QString type;
    // QString server;
    // QString DBName;
    // QString user;
    // QString password;
    QJsonParseError jsonParseError;
    QJsonDocument jsonDocument(QJsonDocument::fromJson(QString::fromStdString(ci.Settings.c_str()).toUtf8(), &jsonParseError));
    if(QJsonParseError::NoError != jsonParseError.error)
    {
        //LOGERROR("parse json file {} error", fullpath.toStdString().c_str());
        qDebug() << "ERROR:" << __FILE__ << __FUNCTION__<< __LINE__;
    }
    //QJsonArray ja = jsonDocument.array();
    QJsonObject jo = jsonDocument.object();
    // foreach (auto var, ja) {
    dbtype = jo["type"].toString();
    server = jo["host"].toString();
    usr = jo["usr"].toString();
    DBName = jo["database"].toString();
    // port = var["port"].toVariant().toInt();
    passwd = jo["passwd"].toString();
    // dstTable = jo["table"].toString();
    // tableColumns = jo["columns"].toString();
    // }
    QJsonArray targets = jo["target"].toArray();
    foreach(auto target , targets){
        TargetTable targetTable;
        QString tgtName = target["table"].toString();
        QJsonArray sources = target["sourcetable"].toArray();
        QList<QString>sourceList;
        foreach(auto src , sources){
            sourceTableMap.insert(src.toString(),tgtName);
            sourceList.append(src.toString());
        }
        QJsonArray columns = target["column"].toArray();
        QList<ColumnDef>columnList;
        QString columnString = "";
        foreach (auto col, columns) {
            ColumnDef colDef;
            colDef.from = col["from"].toString();
            QStringList strlist = colDef.from.split(QLatin1Char('.'), Qt::SkipEmptyParts);
            colDef.name = strlist[1];
            colDef.to = col["to"].toString();
            columnList.append(colDef);
            if(!columnString.isEmpty()){
                columnString += ",";
            }
            columnString += col["to"].toString();
        }
        targetTable.columnDefs = columnList;
        targetTable.sourceTables = sourceList;
        targetTable.columns = columnString;
        targetTableMap.insert(tgtName, targetTable);
    }

    // clientID = QString("%1@%2").arg(usr, passwd);
    // dataItems = ci.dataItems;
    // topicsMap = ci.topicsMap;
    // foreach (auto var, ci.dataItems) {
    //     dataMap.insert({var, {}});
    // }
    open(dbtype, server, DBName, usr, passwd);
    // connect(this, SIGNAL(received), this, SLOT(pushData));
    // mqtt->connect2Host(host, port, usr, passwd, clientID);
    //start();
}

void DBStorage::OnData(const QString& user, const QString& key, const QVariant& val)
{
    QMap<QString, QJsonObject>dataMap;

    dataMap.clear();
    qDebug() << __FILE__ << __FUNCTION__<< __LINE__ << user << key << val;
    QString topic = key;
    // QByteArray payload = "data";
    // QByteArray byteArray(val.c_str(), val.length());
    QJsonParseError err;
    QJsonDocument jsonDoc(QJsonDocument::fromJson(val.toString().toLatin1(),&err));
    QJsonObject deviceObject = jsonDoc.object();
    // QStringList keys = jsonObject.keys();

    // auto itTopic = topicsMap.find(topic.toStdString());
    // auto range = topicsMap.equal_range(key.toStdString());
    // for (auto it = range.first; it != range.second; ++it) {
    //     qDebug() << QString(it->first.c_str())  << QString(it->second.c_str()) << '\n';
    //     QJsonObject val = deviceObject[QString::fromStdString(it->second)].toObject();
    //     QString dataName = QString("%1.%2").arg(key, it->second.c_str());
    //     dataMap[dataName] = val;
    // }

    QString targetTable = "";
    if(sourceTableMap.contains(key)){
        targetTable = sourceTableMap[key];
    }
    if(!targetTable.isEmpty()){
        auto tableIt = targetTableMap.find(targetTable);
        for(auto columnDefsIt = tableIt->columnDefs.begin(); columnDefsIt != tableIt->columnDefs.end(); columnDefsIt++){
            QJsonObject ov = deviceObject[columnDefsIt->name].toObject();
            // qDebug() << " >> " << columnDefsIt->from ;
            dataMap.insert(columnDefsIt->from, ov);
        }
        insert2Data(key, dataMap);
    }
    // mqtt->publish(topic, val.toString().toLatin1());
}

int DBStorage::open(QString type,QString wsServer,QString wsDBName,QString wsUser,QString wsPassword)
{
    int nPort = 3306;
    QString qsServer = wsServer;
    if( qsServer.contains(":") )
    {
        nPort = qsServer.mid(qsServer.indexOf(":")+1).toUInt();
        qsServer = qsServer.mid(0,qsServer.indexOf(":"));
    }
    QSqlDatabase objCnn = QSqlDatabase::database(wsDBName + connectName());
    if( objCnn.isOpen() == true )
    {
        close();
    }

    if ( type == "MYSQL")
    {
        driver = "QMYSQL";
        // serverIp = wsServer;
        // dBName = wsDBName;
        // userName = wsUser;
        // password = wsPassword;
        try
        {
            QStringList drivers = QSqlDatabase::drivers();

            // if( m_bTraceDebug )
            // {
            //     QString strDrivers = "SQLDrivers:";
            //     foreach(QString driver, drivers)
            //         strDrivers += " " + driver;
            //     qDebug() << __FILE__<<__FUNCTION__<<__LINE__<< strDrivers;
            // }

            objCnn = QSqlDatabase::addDatabase(driver,DBName + connectName());
            objCnn.setConnectOptions("MYSQL_OPT_RECONNECT=1;MYSQL_OPT_CONNECT_TIMEOUT=3");
            objCnn.setHostName(qsServer);
            objCnn.setPort(nPort);
            objCnn.setDatabaseName(wsDBName);
            objCnn.setUserName(wsUser);
            objCnn.setPassword(wsPassword);

            if( !objCnn.open()  )
            {
                QSqlError errDBase = objCnn.lastError();
                QString wsError = errDBase.text();
                qCritical() << __FILE__<<__FUNCTION__<<__LINE__
                 << " mysql.error : " << wsError;

                if( wsError.contains("Can't connect") == true )
                {
                    return emDBError_Server;
                }
            }
        }
        catch (QException& e)
        {
            qCritical() << __FILE__<<__FUNCTION__<<__LINE__ << " mysql.error : " << e.what();
        }
    }
    else if (type == "ODBC")
    {
        try
        {
            // QString strHost = ".\\SQLEXPRESS1";
            // int port = 1433;
            // QString strDbName = "wxd";
            // QString strUserName = "sa";
            // QString strUserPwd = "111111";
            // dBName = wsDBName;

            QString strconn = QString("Driver={SQL SERVER};SERVER=%1;DATABASE=%2;UID=%3;PWD=%4;")
                .arg(wsServer)
                //.arg(port)
                .arg(wsDBName)
                .arg(wsUser)
                .arg(wsPassword);
            objCnn = QSqlDatabase::addDatabase("QODBC",DBName + connectName());
            objCnn.setConnectOptions("MYSQL_OPT_RECONNECT=1;MYSQL_OPT_CONNECT_TIMEOUT=3");
            objCnn.setDatabaseName(strconn);
            objCnn.setConnectOptions();

            if (!objCnn.open())
            {
                QSqlError errDBase = objCnn.lastError();
                QString wsError = errDBase.text();
                if( wsError.contains("Can't connect") == true )
                {
                    return emDBError_Server;
                }
            }
        }
        catch (QException& e)
        {
            qCritical()<< __FILE__<<__FUNCTION__<<__LINE__<< e.what();
        }
    }

    // if( m_bTraceDebug )
    {
        qDebug() << __FILE__<<__FUNCTION__<<__LINE__<< " db:" << DBName << (objCnn.isOpen() ? "connected.":"connect faild.");
    }
    // if (objCnn.isOpen())
    // {
    //     GetTableColumnTypes();
    // }

    return objCnn.isOpen() ? emDBError_Success : emDBError_User;
}


#if 1
bool DBStorage::insert2Data(const QString& sourceTable, const QMap<QString, QJsonObject>& dataMap)
{
    bool bRet = false;
    QString strInsertSql;
    QString valData = "";
    QString dstTable = sourceTableMap[sourceTable];
    QString columnString = targetTableMap[dstTable].columns;
    QList<ColumnDef> columnDefines = targetTableMap[dstTable].columnDefs;
    // QList<ColumnDef>::Iterator columnIt = columnDefines.begin();
    for(auto columnIt = columnDefines.begin(); columnIt != columnDefines.end(); columnIt++){
        // qDebug() << columnIt->from << " -> " << columnIt->to;
        auto it = dataMap.find(columnIt->from);
        if(it == dataMap.end()){
            qDebug() << "ERROR :" << __FILE__ << __FUNCTION__<< __LINE__;
            return false;
        }
        QJsonObject val = it.value();
        // QString fromColumn = QString("%1.%2").arg(sourceTable,val["name"].toString());
        // if(fromColumn.compare(columnIt->from) != 0){
        //     continue;
        // }

        if(!valData.isEmpty()){
            valData += ",";
        }
        int type = val["type"].toInt();

        switch (type) {
            case QMetaType::Type::QDateTime:
                if(dbtype == "MYSQL"){
                    qint64 timestamp = val["value"].toVariant().toULongLong();
                    QDateTime dt = QDateTime::fromMSecsSinceEpoch(timestamp/1000);
                    valData += QString("\'%1.%2\'").arg(dt.toString("yyyy-MM-dd hh:mm:ss"),QString("%1").arg(timestamp%1000));
                    // valData += QString("'%1'").arg(val["value"].toVariant().toULongLong());
                }
                break;
            case QMetaType::Type::ULongLong:
                valData += QString("%1").arg(val["value"].toVariant().toULongLong());
                break;
            case QMetaType::Type::QString:
                valData += QString("'%1'").arg(val["value"].toString());
                break;
            case QMetaType::Type::Double:
                valData += QString("%1").arg(val["value"].toVariant().toDouble());
                break;
            case QMetaType::Type::Float:
                valData += QString("%1").arg(val["value"].toVariant().toFloat());
                break;
            case QMetaType::Type::Int:
                valData += QString("%1").arg(val["value"].toVariant().toInt());
                break;
            case QMetaType::Type::LongLong:
                valData += QString("%1").arg(val["value"].toVariant().toLongLong());
                break;
            default:
                break;
        }

    }
    QString message;
    // 生成插入语句
    strInsertSql = QString::fromLocal8Bit("INSERT INTO %1(%2) VALUES(%3)").arg(dstTable).arg(columnString).arg(valData);
    // 执行插入语句
    bRet = excSql(strInsertSql);
    if (!bRet)
    {
        message = QString::fromLocal8Bit("数据入库失败");
        qCritical() << __FILE__<<__FUNCTION__<<__LINE__ << message << strInsertSql;
    }else{
        qDebug() << __FILE__<<__FUNCTION__<<__LINE__ << " insert success : " << strInsertSql;
    }
    return bRet;
}
#endif

bool DBStorage::isConnected()
{
    QSqlDatabase objCnn = QSqlDatabase::database(DBName + connectName());
    return objCnn.isOpen();
}

void DBStorage::close()
{
    QSqlDatabase objCnn = QSqlDatabase::database(DBName + connectName());
    if( objCnn.isOpen() )
    {
        objCnn.close();
    }
}

bool DBStorage::excSql(QStringList sqlList,int& id)
{
    if( sqlList.length() <= 0 )
    {
        return false;
    }

    QSqlDatabase objCnn = QSqlDatabase::database(DBName + connectName());
    if( objCnn.isOpen() == false )
    {
        open(dbtype, server,DBName, usr, passwd);
    }
    objCnn = QSqlDatabase::database(DBName + connectName());
    QSqlQuery query(objCnn);
    objCnn.transaction();

    bool bExecute = true;
    for( int n = 0 ; n < sqlList.length(); n++ )
    {
        query.exec( sqlList[n] );
        int nCount = query.numRowsAffected();
        if( 0 >= nCount )
        {
            QSqlError errQuery = query.lastError();
            QSqlError errDBase = objCnn.lastError();
            QString wsError = errDBase.text() + ":" + errQuery.text();
            qCritical()<< __FILE__<<__FUNCTION__<<__LINE__ << wsError;

            bExecute = false;
            break;
        }
    }

    if( bExecute )
    {
        objCnn.commit();
        if( query.exec( "select LAST_INSERT_ID()" ) )
        {
            if( query.next() )
            {
                id = query.value(0).toInt();
            }
        }
    }
    else
    {
        objCnn.rollback();
    }

    return bExecute;
}

bool DBStorage::excSql(QString strSql)
{
    QSqlDatabase objCnn = QSqlDatabase::database(DBName + connectName());
    if( objCnn.isOpen() == false )
    {
        open(dbtype, server,DBName, usr, passwd);
    }
    objCnn = QSqlDatabase::database(DBName + connectName());
    QSqlQuery query(objCnn);
    bool bRet = query.exec(strSql);
    if( bRet == false )
    {
        QSqlError errDBase = objCnn.lastError();
        QSqlError errQuery = query.lastError();
        qCritical()<< __FILE__<<__FUNCTION__<<__LINE__ << "query.sql = " << strSql << " QueryError : " << errQuery.text();
    }
    return bRet;
}


QSqlQuery DBStorage::query(QString strSql)
{
    QSqlDatabase objCnn = QSqlDatabase::database(DBName + connectName());
    if( objCnn.isOpen() == false )
    {
        open(dbtype,server,DBName, usr, passwd);
    }
    objCnn = QSqlDatabase::database(DBName + connectName());
    QSqlQuery query(objCnn);
    query.setForwardOnly(true);
    query.exec(strSql) ;

    return query;
}

void DBStorage::setLoader(QLibrary *)
{

}

void DBStorage::run()
{
    /*while(!isInterruptionRequested()){
        qDebug() << __FILE__ << __FUNCTION__;
        QThread::msleep(1000);
    }*/
}

void DBStorage::pushData()
{
    // dataMap[dataName.toStdString()] = val;
}

Client* instance()
{
    return new DBStorage();
}

void destroy(Client* pInstance)
{
    if( pInstance )
    {
        delete pInstance;
    }
}