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#include "interruptsignalhandler.h"

#include <windows.h>

class InterruptSignalHandlerPrivate
{
public:
    static BOOL WINAPI consoleHandler(DWORD signal);
    static InterruptSignalHandler* s_handler;
};

InterruptSignalHandler* InterruptSignalHandlerPrivate::s_handler = nullptr;

InterruptSignalHandler::InterruptSignalHandler(QObject *parent)
    : QObject(parent)
{
    if (!installSignalHandler())
        qFatal("Could not install signal handler in InterruptSignalHandler");
}

InterruptSignalHandler::~InterruptSignalHandler()
{
    SetConsoleCtrlHandler(&InterruptSignalHandlerPrivate::consoleHandler, FALSE);
}

bool InterruptSignalHandler::installSignalHandler()
{
    d->s_handler = this;
    return SetConsoleCtrlHandler(&InterruptSignalHandlerPrivate::consoleHandler, TRUE);
}

BOOL WINAPI InterruptSignalHandlerPrivate::consoleHandler(DWORD signal)
{
    if (signal == CTRL_C_EVENT || signal == CTRL_CLOSE_EVENT) {
        emit s_handler->interrupted();
        return true;
    }
    return false;
}