/*
 * Copyright (c) 2002-2003 Christian Loose <christian.loose@hamburg.de>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#include "cvsjob.h"

#include "../debug.h"
#include "sshagent.h"

#include <kprocess.h>

#include <cvsjobadaptor.h>

struct CvsJob::Private {
    Private()
        : isRunning(false)
    {
        childproc = new KProcess;
    }
    ~Private()
    {
        delete childproc;
    }

    KProcess *childproc;
    QString server;
    QString rsh;
    QString directory;
    bool isRunning;
    QStringList outputLines;
    QString dbusObjectPath;
};

CvsJob::CvsJob(unsigned jobNum)
    : QObject()
    , d(new Private)
{
    (void)new CvsjobAdaptor(this);
    QDBusConnection dbus = QDBusConnection::sessionBus();
    d->dbusObjectPath = "/CvsJob" + QString::number(jobNum);
    qCDebug(log_cervisia) << "dbusObjectPath:" << d->dbusObjectPath;
    dbus.registerObject(d->dbusObjectPath, this);
}

CvsJob::CvsJob(const QString &objId)
    : QObject()
    , d(new Private)
{
    (void)new CvsjobAdaptor(this);
    // TODO register it with good name
    d->dbusObjectPath = '/' + objId;
    qCDebug(log_cervisia) << "dbusObjectPath:" << d->dbusObjectPath;
    QDBusConnection::sessionBus().registerObject(d->dbusObjectPath, this);
}

CvsJob::~CvsJob()
{
    delete d;
}

QString CvsJob::dbusObjectPath() const
{
    return d->dbusObjectPath;
}

void CvsJob::clearCvsCommand()
{
    d->childproc->clearProgram();
}

void CvsJob::setRSH(const QString &rsh)
{
    d->rsh = rsh;
}

void CvsJob::setServer(const QString &server)
{
    d->server = server;
}

void CvsJob::setDirectory(const QString &directory)
{
    d->directory = directory;
}

bool CvsJob::isRunning() const
{
    return d->isRunning;
}

CvsJob &CvsJob::operator<<(const QString &arg)
{
    *d->childproc << arg;
    return *this;
}

CvsJob &CvsJob::operator<<(const char *arg)
{
    *d->childproc << arg;
    return *this;
}

CvsJob &CvsJob::operator<<(const QStringList &args)
{
    *d->childproc << args;
    return *this;
}

QString CvsJob::cvsCommand() const
{
    return d->childproc->program().join(QLatin1String(" "));
}

QStringList CvsJob::output() const
{
    return d->outputLines;
}

bool CvsJob::execute()
{
    // setup job environment to use the ssh-agent (if it is running)
    SshAgent ssh;
    if (!ssh.pid().isEmpty()) {
        // qCDebug(log_cervisia) << "PID  = " << ssh.pid();
        // qCDebug(log_cervisia) << "SOCK = " << ssh.authSock();

        d->childproc->setEnv("SSH_AGENT_PID", ssh.pid());
        d->childproc->setEnv("SSH_AUTH_SOCK", ssh.authSock());
    }

    d->childproc->setEnv("SSH_ASKPASS", "cvsaskpass");

    if (!d->rsh.isEmpty())
        d->childproc->setEnv("CVS_RSH", d->rsh);

    if (!d->server.isEmpty())
        d->childproc->setEnv("CVS_SERVER", d->server);

    if (!d->directory.isEmpty())
        d->childproc->setWorkingDirectory(d->directory);

    connect(d->childproc, SIGNAL(finished(int, QProcess::ExitStatus)), SLOT(slotProcessFinished()));
    connect(d->childproc, SIGNAL(readyReadStandardOutput()), SLOT(slotReceivedStdout()));
    connect(d->childproc, SIGNAL(readyReadStandardError()), SLOT(slotReceivedStderr()));

    qCDebug(log_cervisia) << "Execute cvs command:" << cvsCommand();

    d->isRunning = true;
    d->childproc->setOutputChannelMode(KProcess::SeparateChannels);
    d->childproc->setShellCommand(cvsCommand());
    d->childproc->start();
    return d->childproc->waitForStarted();
}

void CvsJob::cancel()
{
    d->childproc->kill();
}

void CvsJob::slotProcessFinished()
{
    qCDebug(log_cervisia);
    // disconnect all connections to childproc's signals
    d->childproc->disconnect();
    d->childproc->clearProgram();

    d->isRunning = false;

    emit jobExited(d->childproc->exitStatus() == QProcess::NormalExit, d->childproc->exitCode());
}

void CvsJob::slotReceivedStdout()
{
    const QString output(QString::fromLocal8Bit(d->childproc->readAllStandardOutput()));

    // accumulate output
    d->outputLines += output.split('\n');

    qCDebug(log_cervisia) << "output:" << output;
    emit receivedStdout(output);
}

void CvsJob::slotReceivedStderr()
{
    const QString output(QString::fromLocal8Bit(d->childproc->readAllStandardError()));

    // accumulate output
    d->outputLines += output.split('\n');

    qCDebug(log_cervisia) << "output:" << output;
    emit receivedStderr(output);
}
