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/*
* qtmaildir - a Qt6 mail client for notmuch-indexed Maildirs
* Copyright (C) 2026 Danilo M. <danix@danix.xyz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include <QObject>
#include <QProcess>
#include <QString>
/// Runs the configured external sync command.
///
/// qtmaildir deliberately does not implement sync itself. The existing script
/// holds a flock that is the shared mutex between the user's cron sync, which
/// runs every 10 minutes, and any manual sync; running the script joins that
/// mutex, whereas a built-in implementation would sit outside it and could run
/// mbsync concurrently with cron, corrupting Maildir UID state.
class MailSync : public QObject
{
Q_OBJECT
public:
explicit MailSync(const QString &command, QObject *parent = nullptr);
/// False when no command is configured; the UI disables its Sync button.
bool isAvailable() const { return !m_command.isEmpty(); }
bool isRunning() const;
/// Returns false if unavailable or already running. A true return means the
/// process was handed to the event loop, not that it launched successfully:
/// a missing binary surfaces asynchronously through finished(false, ...).
bool start();
QString log() const { return m_log; }
signals:
void started();
void outputReceived(const QString &chunk);
void finished(bool success, int exitCode);
private:
void handleReadyRead();
void handleFinished(int exitCode, QProcess::ExitStatus status);
void handleError(QProcess::ProcessError error);
QString m_command;
QProcess m_process;
QString m_log;
};
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