#!/bin/bash
#
# Intended to be called from file manager as aftermount command.
# Checks if mounted volume looks like rsnapshot snapshot_root and if
# so, asks to run backup in a graphical dialog.
#
# Expected backup script installed into BACKUP path below and
# passwordless sudo available for it for any user of %plugdev group

BACKUP=/usr/local/sbin/backup
SUDOCMD=sudo
spacefm_dialog() {
	eval "$(spacefm -g --title "$1" --label "$2" --button no --button yes)"
	[ "$dialog_pressed_label" = "yes" ]&& return 0
	return 1
}

spacefm_monolog() {
	spacefm -g --title "$1" --label "$2" --window-icon "$3" --button ok >/dev/null
}

zenity_dialog() {
	zenity --question --title "$1" --text "$2"
}

zenity_monolog() {
 	zenity --$3 --title "$1" --text "$2"
}
mountpoint="$1"
grep -q "^snapshot_root	$mountpoint" /etc/rsnapshot.conf || exit 0



eval "$(df -H "$mountpoint"|awk 'NR>1 {printf "dev=%s\nsize=%s\nfree=%s\nmp=%s",$1,$2,$4,$6;}')"
message="Backup media inserted into $dev\nTotal space $size\nFree space=$free\n. Would you like to start backup?"

if command -v spacefm; then
	iface=spacefm
else
	iface=zenity
fi

${iface}_dialog "Backup media inserted" "$message" || exit 0

if sudo $BACKUP; then
	${iface}_monolog "Backup successful" "Backup finished successfully" info
else 
	${iface}_monolog "Backup failed" "Backup finished with errors. See logs" error
	exit 1
fi