# "shell" command
#
# Copyright (C) 2014  Patrick "P. J." McDermott
#
# This file is part of the ProteanOS Development Kit.
#
# The ProteanOS Development Kit 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.
#
# The ProteanOS Development Kit 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 the ProteanOS Development Kit.  If not, see
# <http://www.gnu.org/licenses/>.

use profile
use chroot

cmd_shell_main()
{
	local root=
	local uname_s=

	if [ ${#} -lt 1 ]; then
		print_cmd_usage 'shell' >&2
		exit 1
	fi

	root="${1}"
	shift 1

	. "${root}/etc/os-release"
	profile_set "${ID}"

	uname_s="$( (uname -s) 2>/dev/null)" || uname_s='unknown'
	mkdir -p "${root}/prokit/wd/${$}"
	case "${uname_s}" in
		'Linux')
			mount -o bind . "${root}/prokit/wd/${$}"
			;;
	esac

	chroot_mount "${root}"
	if [ ${#} -eq 0 ]; then
		chroot "${root}" /bin/sh -c "cd '/prokit/wd/${$}'; /bin/sh"
		printf '\n'
		info "$(get_msg 'cmd_shell_exiting')"
	else
		chroot "${root}" /bin/sh -c "cd '/prokit/wd/${$}'; ${*}"
	fi
	chroot_umount "${root}"

	case "${uname_s}" in
		'Linux')
			umount "${root}/prokit/wd/${$}"
			;;
	esac
	rmdir "${root}/prokit/wd/${$}"
}