#!/bin/bash

restoreDir="/etc/restore"

scriptPath="$(dirname "$(readlink -f "$0")")"

source "${scriptPath}/functions.sh"

hook_before() {
    local btrfsPartition

    btrfsPartition="$(findmnt -oSOURCE -rnv /)"

    if [[ ! -d "/.btrfs" ]]; then
        mkdir /.btrfs
    fi

    if ! mount | grep '\.btrfs' &>/dev/null; then
        mount "$btrfsPartition" -o subvolid=5 /.btrfs || exit 200
    fi
}

hook_fail() {
    if mount | grep '\.btrfs' &>/dev/null; then
        umount /.btrfs || exit 200
    fi
}

hook_after() {
    :
}

hook_final() {
    if mount | grep '\.btrfs' &>/dev/null; then
        umount /.btrfs || exit 200
    fi
}


case "$1" in
    before)     hook_before     || exit $?;;
    after)      hook_after      || exit $?;;
    fail)       hook_final      || exit $?;;
    finally)    hook_final      || exit $?;;
esac