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** Copyright (C) 2016 The Qt Company Ltd.
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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#include "sshkeydeployer.h"

#include <ssh/sshremoteprocessrunner.h>
#include <utils/fileutils.h>

using namespace QSsh;

namespace RemoteLinux {
namespace Internal {

class SshKeyDeployerPrivate
{
public:
    SshRemoteProcessRunner deployProcess;
};

} // namespace Internal

SshKeyDeployer::SshKeyDeployer(QObject *parent)
    : QObject(parent), d(new Internal::SshKeyDeployerPrivate)
{
}

SshKeyDeployer::~SshKeyDeployer()
{
    cleanup();
    delete d;
}

void SshKeyDeployer::deployPublicKey(const SshConnectionParameters &sshParams,
    const QString &keyFilePath)
{
    cleanup();

    Utils::FileReader reader;
    if (!reader.fetch(keyFilePath)) {
        emit error(tr("Public key error: %1").arg(reader.errorString()));
        return;
    }

    connect(&d->deployProcess, &SshRemoteProcessRunner::connectionError,
            this, &SshKeyDeployer::handleConnectionFailure);
    connect(&d->deployProcess, &SshRemoteProcessRunner::processClosed,
            this, &SshKeyDeployer::handleKeyUploadFinished);
    const QByteArray command = "test -d .ssh "
        "|| mkdir .ssh && chmod 0700 .ssh && echo '"
        + reader.data() + "' >> .ssh/authorized_keys && chmod 0600 .ssh/authorized_keys";
    d->deployProcess.run(command, sshParams);
}

void SshKeyDeployer::handleConnectionFailure()
{
    cleanup();
    emit error(tr("Connection failed: %1").arg(d->deployProcess.lastConnectionErrorString()));
}

void SshKeyDeployer::handleKeyUploadFinished(int exitStatus)
{
    Q_ASSERT(exitStatus == SshRemoteProcess::FailedToStart
        || exitStatus == SshRemoteProcess::CrashExit
        || exitStatus == SshRemoteProcess::NormalExit);

    const int exitCode = d->deployProcess.processExitCode();
    const QString errorMsg = d->deployProcess.processErrorString();
    cleanup();
    if (exitStatus == SshRemoteProcess::NormalExit && exitCode == 0)
        emit finishedSuccessfully();
    else
        emit error(tr("Key deployment failed: %1.").arg(errorMsg));
}

void SshKeyDeployer::stopDeployment()
{
    cleanup();
}

void SshKeyDeployer::cleanup()
{
    disconnect(&d->deployProcess, 0, this, 0);
}

} // namespace RemoteLinux