configuration/local/bin/backup

#!/bin/sh

export BORG_REPO=ssh://Caret/home/ninewise/borg
export BORG_PASSPHRASE="$(pass show borg)"

info() { printf "\n%s %s\n\n" "$( date )" "$*" >&2; }
trap 'echo $( date ) Backup interrupted >&2; exit 2' INT TERM

info "Starting backup"

borg create                           \
	--verbose                         \
	--filter AME                      \
	--list                            \
	--stats                           \
	--show-rc                         \
	--compression lz4                 \
	--exclude-caches                  \
	--exclude '/etc/sv/*/supervise'   \
	--exclude '/etc/sudoers'          \
	--exclude '/etc/securetty'        \
	--exclude '/etc/wpa_supplicant/wpa_supplicant.conf' \
	--exclude '/etc/sudoers.dist'     \
	--exclude '/etc/kernel.d/post-install/50-grub' \
	--exclude '/etc/kernel.d/post-remove/50-grub' \
	--exclude '/etc/.pwd.lock'        \
	--exclude '/etc/gshadow-'         \
	--exclude '/etc/passwd-'          \
	--exclude '/etc/shadow-'          \
	--exclude '/etc/shadow'           \
	--exclude '/etc/gshadow'          \
	--exclude '/var/tmp/*'            \
	--exclude '/var/db/*'             \
	--exclude '/var/cache'            \
	--exclude '/var/lib/alsa'         \
	--exclude '/var/lib/tor'          \
	--exclude '/var/lib/random-seed'  \
	--exclude '/var/log/tallylog'     \
	--exclude '/var/log/btmp'         \
	--exclude '/var/log/dmesg.log'    \
	--exclude '/var/log/faillog'      \
	--exclude '/data/homes/*'         \
	--exclude '/data/mail/*/.uidvalidity' \
	--exclude '/data/music/*'         \
	--exclude '/data/pictures/*'      \
	--exclude '/data/programming/*'   \
	--exclude '/data/torrents/*'      \
	--exclude '/home/*/.ssh/control*' \
	--exclude '/home/*/services/*/supervise' \
	--exclude '*/.git/*'              \
	--exclude '*/.stack-work/*'       \
	--exclude '*/lock'                \
	--exclude '*/.mbsyncstate*'       \
	\
	::'{hostname}-{now}'              \
	/etc                              \
	/var                              \
	/home/ninewise/dotfiles           \
	/home/ninewise/.gnupg             \
	/home/ninewise/.password-store    \
	/home/ninewise/.ssh               \
	/home/ninewise/.xmonad/src/       \
	/home/ninewise/.yash_history      \
	/data

backup_exit=$?

info "Pruning repository"

# Use the `prune` subcommand to maintain 7 daily, 4 weekly and 6 monthly
# archives of THIS machine. The '{hostname}-' prefix is very important to
# limit prune's operation to this machine's archives and not apply to
# other machines' archives also:

borg prune                          \
	--list                          \
	--prefix '{hostname}-'          \
	--show-rc                       \
	--keep-daily    7               \
	--keep-weekly   4               \
	--keep-monthly  6

prune_exit=$?

global_exit=$(( backup_exit > prune_exit ? backup_exit : prune_exit ))

if [ ${global_exit} -eq 0 ]; then
	info "Backup and Prune finished successfully"
elif [ ${global_exit} -eq 1 ]; then
	info "Backup and/or Prune finished with warnings"
else
	info "Backup and/or Prune finished with errors"
fi

exit ${global_exit}