#!/bin/sh
# 0 * * * * /home/nathan/Documents/backup.sh

# Check if the USB is plugged in (Gnome auto-mounts to /run/media)
USB="/run/media/$USER/sd_backup";
if [[ ! -d $USB ]]; then
	exit 1 # sd_backup is not plugged in;
fi

USB_DIR="/fedora/borg";

DIRS="git nas 360ss";
BASE_DIR="/home/nathan/Documents/";

# Basically the code from directory_backup in scripts.git
borg_backup (){
	if [ ! -d "$BACKUP_DIR" ]; then
		mkdir -p $BACKUP_DIR
		borg init --encryption=none $BACKUP_DIR
	fi

	export BORG_REPO=$BACKUP_DIR
	borg create ::{hostname}-{now} $DIR
}
borg_prune () {
	# Keep last 12 hours, 7 days, 4 weeks worth of backups
	# LESS for local to save storage
	borg prune						\
	--glob-archives	'{hostname}-*'	\
	--keep-hourly	12				\
	--keep-daily	7				\
	--keep-weekly	4
	# Then clear up the disk space of the files removed via prune
	borg compact
}
# Also do an rsync, so there's an accessible clone of data on USB
# makes it easier to drop things between PCs, but it is a CLONE
rsync_backup (){
	if [ ! -d "$CLONE_DIR" ]; then
		mkdir -p $CLONE_DIR;
	fi
	# avh with --dry-run when testing
	# Contents of directory for rsync (extra /)
	rsync -avh $DIR/ $CLONE_DIR \
		--delete-before
}

for bDir in $DIRS
do
	BACKUP_DIR=$USB$USB_DIR/$bDir;
	CLONE_DIR=$USB/fedora/rsync/$bDir;
	DIR=$BASE_DIR$bDir; 

	borg_backup
	borg_prune

	rsync_backup
done