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/* possible connection parameters */

#ifndef TST_DATABASES_H

#define TST_DATABASES_H

#include <QSqlDatabase>

#include <QSqlDriver>

#include <QSqlError>

#include <QSqlQuery>

#include <QRegExp>

#include <QDir>

#include <QVariant>

#include <QDebug>

#include <QtTest/QtTest>

#if defined (Q_OS_WIN) || defined (Q_OS_WIN32)

#  include <qt_windows.h>

#  if defined (Q_OS_WINCE)

#    include <winsock2.h>

#  endif

#else

#include <unistd.h>

#endif

#define CHECK_DATABASE( db ) \

    if ( !db.isValid() ) { qFatal( "db is Invalid" ); }

#define QVERIFY_SQL(q, stmt) QVERIFY2((q).stmt, tst_Databases::printError((q).lastError(), db))

#define QFAIL_SQL(q, stmt) QVERIFY2(!(q).stmt, tst_Databases::printError((q).lastError(), db))

#define DBMS_SPECIFIC(db, driver) \

    if (!db.driverName().startsWith(driver)) { QSKIP(driver " specific test", SkipSingle); return; }

// ### use QSystem::hostName if it is integrated in qtest/main

static QString qGetHostName()

{

    static QString hostname;

    if ( !hostname.isEmpty() )

        return hostname;

    char hn[257];

    if ( gethostname( hn, 255 ) == 0 ) {

        hn[256] = '\0';

        hostname = QString::fromLatin1( hn );

        hostname.replace( QLatin1Char( '.' ), QLatin1Char( '_' ) );

        hostname.replace( QLatin1Char( '-' ), QLatin1Char( '_' ) );

    }

    return hostname;

}

// to prevent nameclashes on our database server, each machine

// will use its own set of table names. Call this function to get

// "tablename_hostname"

inline static QString qTableName( const QString& prefix, QSqlDriver* driver = 0 )

{

    if ( !driver )

        return prefix + "_" + qGetHostName().replace( "-", "_" );

    else

        return driver->escapeIdentifier( prefix + "_" + qGetHostName(), QSqlDriver::TableName );

}

inline static bool testWhiteSpaceNames( const QString &name )

{

/*    return name.startsWith( "QPSQL" )

           || name.startsWith( "QODBC" )

           || name.startsWith( "QSQLITE" )

           || name.startsWith( "QMYSQL" );*/

    return name != QLatin1String("QSQLITE2");

}

inline static QString toHex( const QString& binary )

{

    QString str;

    static char const hexchars[] = "0123456789ABCDEF";

    for ( int i = 0; i < binary.size(); i++ ) {

        ushort code = binary.at(i).unicode();

        str += (QChar)(hexchars[ (code >> 12) & 0x0F ]);

        str += (QChar)(hexchars[ (code >> 8) & 0x0F ]);

        str += (QChar)(hexchars[ (code >> 4) & 0x0F ]);

        str += (QChar)(hexchars[ code & 0x0F ]);

    }

    return str;

}

class tst_Databases

{

public:

    tst_Databases(): counter( 0 )

    {

    }

    ~tst_Databases()

    {

        close();

    }

    // returns a testtable consisting of the names of all database connections if

    // driverPrefix is empty, otherwise only those that start with driverPrefix.

    int fillTestTable( const QString& driverPrefix = QString() ) const

    {

        QTest::addColumn<QString>( "dbName" );

        int count = 0;

        for ( int i = 0; i < dbNames.count(); ++i ) {

            QSqlDatabase db = QSqlDatabase::database( dbNames.at( i ) );

            if ( !db.isValid() )

                continue;

            if ( driverPrefix.isEmpty() || db.driverName().startsWith( driverPrefix ) ) {

                QTest::newRow( dbNames.at( i ).toLatin1() ) << dbNames.at( i );

                ++count;

            }

        }

        return count;

    }

    void addDb( const QString& driver, const QString& dbName,

                const QString& user = QString(), const QString& passwd = QString(),

                const QString& host = QString(), int port = -1, const QString params = QString() )

    {

        QSqlDatabase db;

        if ( !QSqlDatabase::drivers().contains( driver ) ) {

            qWarning() <<  "Driver" << driver << "is not installed";

            return;

        }

        // construct a stupid unique name

        QString cName = QString::number( counter++ ) + "_" + driver + "@";

        cName += host.isEmpty() ? dbName : host;

        if ( port > 0 )

            cName += ":" + QString::number( port );

        db = QSqlDatabase::addDatabase( driver, cName );

        if ( !db.isValid() ) {

            qWarning( "Could not create database object" );

            return;

        }

        db.setDatabaseName( dbName );

        db.setUserName( user );

        db.setPassword( passwd );

        db.setHostName( host );

        db.setPort( port );

        db.setConnectOptions( params );

        dbNames.append( cName );

    }

    void addDbs()

    {

//         addDb( "QOCI8", "//horsehead.nokia.troll.no:1521/pony.troll.no", "scott", "tiger" ); // Oracle 9i on horsehead

//         addDb( "QOCI8", "//horsehead.nokia.troll.no:1521/ustest.troll.no", "scott", "tiger", "" ); // Oracle 9i on horsehead

//         addDb( "QOCI8", "//iceblink.nokia.troll.no:1521/ice.troll.no", "scott", "tiger", "" ); // Oracle 8 on iceblink (not currently working)

//         addDb( "QOCI", "//silence.nokia.troll.no:1521/testdb", "scott", "tiger" ); // Oracle 10g on silence

//         addDb( "QOCI", "//oracle10g-nokia.trolltech.com.au:1521/XE", "scott", "tiger" ); // Oracle 10gexpress on xen

//      This requires a local ODBC data source to be configured( pointing to a MySql database )

//         addDb( "QODBC", "mysqlodbc", "troll", "trond" );

//         addDb( "QODBC", "SqlServer", "troll", "trond" );

//         addDb( "QTDS7", "testdb", "troll", "trondk", "horsehead" );

//         addDb( "QODBC", "silencetestdb", "troll", "trond", "silence" );

//         addDb( "QODBC", "horseheadtestdb", "troll", "trondk", "horsehead" );

//         addDb( "QMYSQL3", "testdb", "troll", "trond", "horsehead.nokia.troll.no" );

//         addDb( "QMYSQL3", "testdb", "troll", "trond", "horsehead.nokia.troll.no", 3307 );

//         addDb( "QMYSQL3", "testdb", "troll", "trond", "horsehead.nokia.troll.no", 3308, "CLIENT_COMPRESS=1;CLIENT_SSL=1" ); // MySQL 4.1.1

//         addDb( "QMYSQL3", "testdb", "troll", "trond", "horsehead.nokia.troll.no", 3309, "CLIENT_COMPRESS=1;CLIENT_SSL=1" ); // MySQL 5.0.18 Linux

//         addDb( "QMYSQL3", "testdb", "troll", "trond", "silence.nokia.troll.no" ); // MySQL 5.1.36 Windows

//         addDb( "QMYSQL3", "testdb", "testuser", "Ee4Gabf6_", "mysql4-nokia.trolltech.com.au" ); // MySQL 4.1.22-2.el4  linux

//         addDb( "QPSQL7", "testdb", "troll", "trond", "horsehead.nokia.troll.no" ); // V7.2 NOT SUPPORTED!

//         addDb( "QPSQL7", "testdb", "troll", "trond", "horsehead.nokia.troll.no", 5434 ); // V7.2 NOT SUPPORTED! Multi-byte

//         addDb( "QPSQL7", "testdb", "troll", "trond", "horsehead.nokia.troll.no", 5435 ); // V7.3

//         addDb( "QPSQL7", "testdb", "troll", "trond", "horsehead.nokia.troll.no", 5436 ); // V7.4

//         addDb( "QPSQL7", "testdb", "troll", "trond", "horsehead.nokia.troll.no", 5437 ); // V8.0.3

//         addDb( "QPSQL7", "testdb", "troll", "trond", "silence.nokia.troll.no" );         // V8.2.1, UTF-8

//         addDb( "QPSQL7", "testdb", "testuser", "Ee4Gabf6_", "postgres74-nokia.trolltech.com.au" );         // Version 7.4.19-1.el4_6.1

//         addDb( "QDB2", "testdb", "troll", "trond", "silence.nokia.troll.no" ); // DB2 v9.1 on silence

//      yes - interbase really wants the physical path on the host machine.

//         addDb( "QIBASE", "/opt/interbase/qttest.gdb", "SYSDBA", "masterkey", "horsehead.nokia.troll.no" );

//         addDb( "QIBASE", "silence.troll.no:c:\\ibase\\testdb", "SYSDBA", "masterkey", "" ); // InterBase 7.5 on silence

//         addDb( "QIBASE", "silence.troll.no:c:\\ibase\\testdb_ascii", "SYSDBA", "masterkey", "" ); // InterBase 7.5 on silence

//         addDb( "QIBASE", "/opt/firebird/databases/testdb.fdb", "testuser", "Ee4Gabf6_", "firebird1-nokia.trolltech.com.au" ); // Firebird 1.5.5

//         addDb( "QIBASE", "/opt/firebird/databases/testdb.fdb", "testuser", "Ee4Gabf6_", "firebird2-nokia.trolltech.com.au" ); // Firebird 2.1.1

//      use in-memory database to prevent local files

//         addDb("QSQLITE", ":memory:");

         addDb( "QSQLITE", QDir::toNativeSeparators(QDir::tempPath()+"/foo.db") );

//         addDb( "QSQLITE2", QDir::toNativeSeparators(QDir::tempPath()+"/foo2.db") );

//         addDb( "QODBC3", "DRIVER={SQL SERVER};SERVER=iceblink.nokia.troll.no\\ICEBLINK", "troll", "trond", "" );

//         addDb( "QODBC3", "DRIVER={SQL Native Client};SERVER=silence.nokia.troll.no\\SQLEXPRESS", "troll", "trond", "" );

//         addDb( "QODBC", "DRIVER={MySQL ODBC 5.1 Driver};SERVER=mysql4-nokia.trolltech.com.au;DATABASE=testdb", "testuser", "Ee4Gabf6_", "" );

//         addDb( "QODBC", "DRIVER={FreeTDS};SERVER=horsehead.nokia.troll.no;DATABASE=testdb;PORT=4101;UID=troll;PWD=trondk", "troll", "trondk", "" );

//         addDb( "QODBC", "DRIVER={FreeTDS};SERVER=silence.nokia.troll.no;DATABASE=testdb;PORT=2392;UID=troll;PWD=trond", "troll", "trond", "" );

//         addDb( "QODBC", "DRIVER={FreeTDS};SERVER=bq-winserv2003-x86-01.apac.nokia.com;DATABASE=testdb;PORT=1433;UID=testuser;PWD=Ee4Gabf6_;TDS_Version=8.0", "", "", "" );

//         addDb( "QODBC", "DRIVER={FreeTDS};SERVER=bq-winserv2008-x86-01.apac.nokia.com;DATABASE=testdb;PORT=1433;UID=testuser;PWD=Ee4Gabf6_;TDS_Version=8.0", "", "", "" );

//         addDb( "QTDS7", "testdb", "testuser", "Ee4Gabf6_", "bq-winserv2003" );

//         addDb( "QTDS7", "testdb", "testuser", "Ee4Gabf6_", "bq-winserv2008" );

//         addDb( "QODBC3", "DRIVER={SQL SERVER};SERVER=bq-winserv2003-x86-01.apac.nokia.com;DATABASE=testdb;PORT=1433", "testuser", "Ee4Gabf6_", "" );

//         addDb( "QODBC3", "DRIVER={SQL SERVER};SERVER=bq-winserv2008-x86-01.apac.nokia.com;DATABASE=testdb;PORT=1433", "testuser", "Ee4Gabf6_", "" );

//         addDb( "QODBC", "DRIVER={Microsoft Access Driver (*.mdb)};DBQ=c:\\dbs\\access\\testdb.mdb", "", "", "" );

    }

    void open()

    {

        addDbs();

        QStringList::Iterator it = dbNames.begin();

        while ( it != dbNames.end() ) {

            QSqlDatabase db = QSqlDatabase::database(( *it ), false );

            qDebug() << "Opening:" << (*it);

            if ( db.isValid() && !db.isOpen() ) {

                if ( !db.open() ) {

                    qWarning( "tst_Databases: Unable to open %s on %s:\n%s", qPrintable( db.driverName() ), qPrintable( *it ), qPrintable( db.lastError().databaseText() ) );

                    // well... opening failed, so we just ignore the server, maybe it is not running

                    it = dbNames.erase( it );

                } else {

                    ++it;

                }

            }

        }

    }

    void close()

    {

        for ( QStringList::Iterator it = dbNames.begin(); it != dbNames.end(); ++it ) {

            {

                QSqlDatabase db = QSqlDatabase::database(( *it ), false );

                if ( db.isValid() && db.isOpen() )

                    db.close();

            }

            QSqlDatabase::removeDatabase(( *it ) );

        }

        dbNames.clear();

    }

    // for debugging only: outputs the connection as string

    static QString dbToString( const QSqlDatabase db )

    {

        QString res = db.driverName() + "@";

        if ( db.driverName().startsWith( "QODBC" ) || db.driverName().startsWith( "QOCI" ) ) {

            res += db.databaseName();

        } else {

            res += db.hostName();

        }

        if ( db.port() > 0 ) {

            res += ":" + QString::number( db.port() );

        }

        return res;

    }

    // drop a table only if it exists to prevent warnings

    static void safeDropTables( QSqlDatabase db, const QStringList& tableNames )

    {

        bool wasDropped;

        QSqlQuery q( db );

        QStringList dbtables=db.tables();

        foreach(const QString &tableName, tableNames)

        {

            wasDropped = true;

            QString table=tableName;

            if ( db.driver()->isIdentifierEscaped(table, QSqlDriver::TableName))

                table = db.driver()->stripDelimiters(table, QSqlDriver::TableName);

            if ( dbtables.contains( table, Qt::CaseInsensitive ) ) {

                foreach(const QString &table2, dbtables.filter(table, Qt::CaseInsensitive)) {

                    if(table2.compare(table.section('.', -1, -1), Qt::CaseInsensitive) == 0) {

                        table=db.driver()->escapeIdentifier(table2, QSqlDriver::TableName);

                        dbtables.removeAll(table2);

                    }

                }

            }

            if ( !wasDropped ) {

                qWarning() << dbToString(db) << "unable to drop table" << tableName << ':' << q.lastError();

//              qWarning() << "last query:" << q.lastQuery();

//              qWarning() << "dbtables:" << dbtables;

//              qWarning() << "db.tables():" << db.tables();

            }

        }

    }

    static void safeDropTable( QSqlDatabase db, const QString& tableName )

    {

        safeDropTables(db, QStringList() << tableName);

    }

    static void safeDropViews( QSqlDatabase db, const QStringList &viewNames )

    {

        if ( isMSAccess( db ) ) // Access is sooo stupid.

            safeDropTables( db, viewNames );

        bool wasDropped;

        QSqlQuery q( db );

        QStringList dbtables=db.tables(QSql::Views);

        foreach(QString viewName, viewNames)

        {

            wasDropped = true;

            QString view=viewName;

            if ( db.driver()->isIdentifierEscaped(view, QSqlDriver::TableName))

                view = db.driver()->stripDelimiters(view, QSqlDriver::TableName);

            if ( dbtables.contains( view, Qt::CaseInsensitive ) ) {

                foreach(const QString &view2, dbtables.filter(view, Qt::CaseInsensitive)) {

                    if(view2.compare(view.section('.', -1, -1), Qt::CaseInsensitive) == 0) {

                        view=db.driver()->escapeIdentifier(view2, QSqlDriver::TableName);

                        wasDropped = q.exec( "drop view " + view);

                        dbtables.removeAll(view);

                    }

                }

            }

            if ( !wasDropped )

                qWarning() << dbToString(db) << "unable to drop view" << viewName << ':' << q.lastError();

//                  << "\nlast query:" << q.lastQuery()

//                  << "\ndbtables:" << dbtables

//                  << "\ndb.tables(QSql::Views):" << db.tables(QSql::Views);

        }

    }

    static void safeDropView( QSqlDatabase db, const QString& tableName )

    {

        safeDropViews(db, QStringList() << tableName);

    }

    // returns the type name of the blob datatype for the database db.

    // blobSize is only used if the db doesn't have a generic blob type

    static QString blobTypeName( QSqlDatabase db, int blobSize = 10000 )

    {

        if ( db.driverName().startsWith( "QMYSQL" ) )

            return "longblob";

        if ( db.driverName().startsWith( "QPSQL" ) )

            return "bytea";

        if ( db.driverName().startsWith( "QTDS" )

                || isSqlServer( db )

                || isMSAccess( db ) )

            return "image";

        if ( db.driverName().startsWith( "QDB2" ) )

            return QString( "blob(%1)" ).arg( blobSize );

        if ( db.driverName().startsWith( "QIBASE" ) )

            return QString( "blob sub_type 0 segment size 4096" );

        if ( db.driverName().startsWith( "QOCI" )

                || db.driverName().startsWith( "QSQLITE" ) )

            return "blob";

        qDebug() <<  "tst_Databases::blobTypeName: Don't know the blob type for" << dbToString( db );

        return "blob";

    }

    static QString autoFieldName( QSqlDatabase db )

    {

        if ( db.driverName().startsWith( "QMYSQL" ) )

            return "AUTO_INCREMENT";

        if ( db.driverName().startsWith( "QTDS" ) )

            return "IDENTITY";

/*        if ( db.driverName().startsWith( "QPSQL" ) )

            return "SERIAL";*/

//        if ( db.driverName().startsWith( "QDB2" ) )

//            return "GENERATED BY DEFAULT AS IDENTITY";

        return QString();

    }

    static QByteArray printError( const QSqlError& err )

    {

        QString result;

        if(err.number() > 0)

            result += '(' + QString::number(err.number()) + ") ";

        result += '\'';

        if(!err.driverText().isEmpty())

            result += err.driverText() + "' || '";

        result += err.databaseText() + "'";

        return result.toLocal8Bit();

    }

    static QByteArray printError( const QSqlError& err, const QSqlDatabase& db )

    {

        QString result(dbToString(db) + ": ");

        if(err.number() > 0)

            result += '(' + QString::number(err.number()) + ") ";

        result += '\'';

        if(!err.driverText().isEmpty())

            result += err.driverText() + "' || '";

        result += err.databaseText() + "'";

        return result.toLocal8Bit();

    }

    static bool isSqlServer( QSqlDatabase db )

    {

        return db.databaseName().contains( "sql server", Qt::CaseInsensitive )

               || db.databaseName().contains( "sqlserver", Qt::CaseInsensitive )

               || db.databaseName().contains( "sql native client", Qt::CaseInsensitive )

               || db.databaseName().contains( "bq-winserv", Qt::CaseInsensitive )

               || db.hostName().contains( "bq-winserv", Qt::CaseInsensitive );

    }

    static bool isMSAccess( QSqlDatabase db )

    {

        return db.databaseName().contains( "Access Driver", Qt::CaseInsensitive );

    }

    static bool isPostgreSQL( QSqlDatabase db )

    {

        return db.driverName().startsWith("QPSQL") || (db.driverName().startsWith("QODBC") && db.databaseName().contains("PostgreSQL") );

    }

    static bool isMySQL( QSqlDatabase db )

    {

        return db.driverName().startsWith("QMYSQL") || (db.driverName().startsWith("QODBC") && db.databaseName().contains("MySQL") );

    }

    static bool isDB2( QSqlDatabase db )

    {

        return db.driverName().startsWith("QDB2") || (db.driverName().startsWith("QODBC") && db.databaseName().contains("db2") );

    }

    // -1 on fail, else Oracle version

    static int getOraVersion( QSqlDatabase db )

    {

        int ver = -1;

        QSqlQuery q( "SELECT banner FROM v$version", db );

        q.next();

        QRegExp vers( "([0-9]+)\\.[0-9\\.]+[0-9]" );

        if ( vers.indexIn( q.value( 0 ).toString() ) ) {

            bool ok;

            ver = vers.cap( 1 ).toInt( &ok );

            if ( !ok )

                ver = -1;

        }

        return ver;

    }

    static QString getMySqlVersion( const QSqlDatabase &db )

    {

        QSqlQuery q(db);

        q.exec( "select version()" );

        if(q.next())

            return q.value( 0 ).toString();

        else

            return QString();

    }