# -*- coding: utf-8 -*-
#
# File: portato/su.py
# This file is part of the Portato-Project, a graphical portage-frontend.
#
# Copyright (C) 2006-2010 René 'Necoro' Neumann
# This is free software.  You may redistribute copies of it under the terms of
# the GNU General Public License version 2.
# There is NO WARRANTY, to the extent permitted by law.
#
# Written by René 'Necoro' Neumann <necoro@necoro.net>



import os

from .constants import APP_ICON
from .helper import detect_desktop_environment

class SUCommand (object):
    def __init__ (self, bin, args):
        self.bin = bin
        self.args = args

    def cmd (self, cmd):
        return [self.bin] + self.args + [cmd]

    def check (self):
        for p in os.environ['PATH'].split(":"):
            jp = os.path.join(p, self.bin)
            if os.access(jp, os.F_OK):
                return True

        return False

class SplitSUCommand (SUCommand):
    def cmd (self, cmd):
        return [self.bin] + self.args + cmd.split()

gtksu = SUCommand("gksu", ["-D", "Portato"])
kdesu = SUCommand("kdesu", ["-t", "-d", "-i", APP_ICON, "-c"])
ktsuss = SplitSUCommand("ktsuss", ["-m", "Portato"])

def detect_su_command ():
    desktop_env = detect_desktop_environment()
    if desktop_env == "kde":
        sus = [kdesu, ktsuss, gtksu]
    elif desktop_env == "gnome":
        sus = [gtksu, ktsuss, kdesu]
    else:
        sus = [ktsuss, gtksu, kdesu]

    for s in sus:
        if s.check():
            return s
        
    return None