/*
 * Copyright 2005-2014, Haiku, Inc.
 * Distributed under the terms of the MIT license.
 *
 * Authors:
 *              Rene Gollent
 *              Nathan Whitehorn
 */


#include "power_button_monitor.h"

#include <string.h>

#include <Directory.h>
#include <Messenger.h>
#include <Roster.h>
#include <String.h>

#include <RosterPrivate.h>


static const char* kBasePath = "/dev/power/button";


PowerButtonMonitor::PowerButtonMonitor()
        :
        fFDs()
{
        BDirectory dir;
        if (dir.SetTo(kBasePath) != B_OK)
                return;

        entry_ref ref;
        while (dir.GetNextRef(&ref) == B_OK) {
                if (strncmp(ref.name, "power", 5) == 0) {
                        BString path;
                        path.SetToFormat("%s/%s", kBasePath, ref.name);
                        int fd = open(path.String(), O_RDONLY);
                        if (fd > 0)
                                fFDs.insert(fd);
                }
        }
}


PowerButtonMonitor::~PowerButtonMonitor()
{
        for (std::set<int>::iterator it = fFDs.begin(); it != fFDs.end(); ++it)
                close(*it);
}


void
PowerButtonMonitor::HandleEvent(int fd)
{
        uint8 button_pressed;
        if (read(fd, &button_pressed, 1) != 1)
                return;

        if (button_pressed) {
                BRoster roster;
                BRoster::Private rosterPrivate(roster);

                rosterPrivate.ShutDown(false, false, false);
        }
}