#!/bin/bash
#===============================================================================
#
# DIRECTORY:
#   /home/*/.local/share/nautilus/scripts/
# OR
#   /home/*/.gnome2/nautilus-sctipts/ (deprecated)
#
# FILE:
#   08-umount
#
# USAGE:
#   Right klick on an used mountpoint and
#   choose this nautilus script from the context menu.
#
# OPTIONS:
#   none
#
# DESCRIPTION:
#   U(n)mount an image or partition with super user privileges.
#
# REQUIREMENTS:
#   bash, zenity, pkexec, mount, coreutils, sed and grep
#
# BUGS:
#   ---
#
# NOTES:
#   Tested on
#   - Debian 8+
#   - Arch Linux
#
# AUTHOR:
#   Patrick Neumann, patrick@neumannsland.de
#
# COMPANY:
#   (privately)
#
# VERSION:
#   0.91 (beta)
#
# LINK TO THE MOST CURRENT VERSION:
#   https://...
#
# CREATED:
#   16.11.2016
#
# COPYRIGHT (C):
#   2015-2020 - Patrick Neumann
#
# LICENSE:
#   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.
#
# WARRANTY:
#   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 <http://www.gnu.org/licenses/>.
#
# TODO:
#   ---
#
# HISTORY:
#   0.9  - Patrick Neumann - Initial (public) release
#   0.91 - Patrick Neumann - switch from gksu to pkexec
#
#===============================================================================

#-------------------------------------------------------------------------------
# Additional supported Distribution(s) (add before Library!).
#-------------------------------------------------------------------------------
SUPPORTED_OSR="arch"

#-------------------------------------------------------------------------------
# Check for library (casualscripter_nautilus-scripts_functions.sh).
#-------------------------------------------------------------------------------
readonly LIBRARY="${0%/*}/.casualscripter_nautilus-scripts_functions.sh"
if [ ! -f "${LIBRARY}" ] ; then
  zenity --error \
         --text \
         "ERROR: casualscripter_nautilus-scripts_functions.sh MISSING!"
  exit 1
fi

source "${LIBRARY}"

#-------------------------------------------------------------------------------
# Checks (see library "casualscripter_nautilus-scripts_functions.sh").
#-------------------------------------------------------------------------------
check_dep "${CUT_BIN}" "coreutils"
check_dep "${PKEXEC_BIN}" "policykit-1 (Debian) or polkit (Arch)"
check_dep "${UMOUNT_BIN}" "umount"
check_dep "${GREP_BIN}" "grep"
check_dep "${SED_BIN}" "sed"

#-------------------------------------------------------------------------------
# Check, if the mountpoint is in use.
#-------------------------------------------------------------------------------
if [ ! -d "${SOURCE}" ] ; then
  error_exit "please choose directory"
fi

check_if_source_is_not_mounted

#-------------------------------------------------------------------------------
# Disable tracker (may interfere with later umount).
#-------------------------------------------------------------------------------
kill_all_tracker_processes

#-------------------------------------------------------------------------------
# U(n)mount with root rights.
#-------------------------------------------------------------------------------
if ${PKEXEC_BIN} ${UMOUNT_BIN} "${SOURCE}" ; then
  success "partition u(n)mounted"
else
  error_exit "u(n)mounting of partition failed"
fi

exit 0