'''
   (C) 2019 Raryel C. Souza
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 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 General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
'''

import platform
import os
import subprocess
import socket

class MyUtil(object):
    @staticmethod
    def open_file(path):
        if platform.system() == "Windows":
            os.startfile(path)
        elif platform.system() == "Darwin":
            subprocess.Popen(["open", path])
        else:
            subprocess.Popen(["xdg-open", path])

    @staticmethod
    def is_internet_connected():
        try:
            # connect to the host -- tells us if the host is actually
            # reachable
            s = socket.create_connection(("www.google.com", 80), 2)
            s.close()
            return True
        except OSError:
            pass
        return False

    @staticmethod
    def percentage(currentval, maxval):
        return 100 * currentval / float(maxval)