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#include "popauthenticator.h"

#include "popconfiguration.h"
#include "poplog.h"

#include <qmailauthenticator.h>
#include <qmailtransport.h>

bool PopAuthenticator::useEncryption(const PopConfiguration &svcCfg,
                                     const QStringList &capabilities)
{
#ifdef QT_NO_SSL
    Q_UNUSED(svcCfg)
    Q_UNUSED(capabilities)
    return false;
#else
    bool useTLS(svcCfg.mailEncryption() == QMailTransport::Encrypt_TLS);

    if (!capabilities.contains("STLS")) {
        if (useTLS) {
            qCWarning(lcPOP) << "Server does not support TLS - continuing unencrypted";
        }
    } else {
        if (useTLS) {
            return true;
        } else {
            if (!capabilities.contains("USER")) {
                qCWarning(lcPOP) << "Server does not support unencrypted USER - using encryption";
                return true;
            }
        }
    }

    return QMailAuthenticator::useEncryption(svcCfg, capabilities);
#endif
}

QList<QByteArray> PopAuthenticator::getAuthentication(const PopConfiguration &svcCfg,
                                                      const QMailCredentialsInterface &credentials)
{
    QList<QByteArray> result;

    QByteArray auth(QMailAuthenticator::getAuthentication(svcCfg, credentials));
    if (!auth.isEmpty()) {
        result.append(QByteArray("AUTH ") + auth);
    } else {
        // If not handled by the authenticator, fall back to user/pass
        result.append(QByteArray("USER ") + credentials.username().toLatin1());
        result.append(QByteArray("PASS ") + credentials.password().toLatin1());
    }

    return result;
}

QByteArray PopAuthenticator::getResponse(const PopConfiguration &svcCfg,
                                         const QByteArray &challenge,
                                         const QMailCredentialsInterface &credentials)
{
    return QMailAuthenticator::getResponse(svcCfg, challenge, credentials);
}