#!/bin/bash

REPO_SERVER_SSH="spacedock-backups"
REPO_SERVER_HOSTNAME="spacedock.servers.ezri.dev"

export BORG_REPO=ssh://${REPO_SERVER_SSH}/~/$(</etc/hostname)/${USER}
# Extract the key from the secret service
export BORG_PASSPHRASE=$(secret-tool lookup service borgbackup account ezri@normandy)
exclude_dirs=(
		"$HOME/.cache"
		"$HOME/.local/share/Steam"
		"$HOME/Downloads"
		"$HOME/.local/share/Trash"
		"$HOME/.local/share/CKAN"
		"$HOME/.local/state"
		"/games/steamapps/downloading/"
		"/secondary/SteamLibrary/steamapps/downloading/"
		"/games/steamapps/shadercache/"
		"/secondary/SteamLibrary/steamapps/shadercache/"
		"/secondary/lost+found/"
)

# Back up home directory and steam library
backup_dirs=(
		"$HOME"
		"/games"
		"/secondary"
)


trap 'echo Backup interrupted >&2; exit 2' INT TERM

# Ensure we can connect to the remote host
while true; do
	ping -c 1 -W 1 ${REPO_SERVER_HOSTNAME} > /dev/null
	if [ $? -eq 0 ]; then
		break
	fi
	echo "Could not connect to ${REPO_SERVER_HOSTNAME}, retrying in 5 seconds..."
	sleep 5
done

echo "Starting backup..."

borg create \
     --verbose \
     --filter AME \
     --list \
     --stats \
     --show-rc \
     --compression lz4 \
		 --sparse \
		 --one-file-system \
     --exclude-caches \
		 --exclude-from /home/ezri/.borgignore \
     ::'{now}' \
     "${backup_dirs[@]}"
		 

backup_exit=$?

echo "Backup complete, pruning repository..."

borg prune \
		 --verbose \
     --list \
     --show-rc \
		 --keep-hourly 48 \
     --keep-daily 12 \
     --keep-weekly 6 \
     --keep-monthly 10

prune_exit=$?

echo "Prune complete, compacting repository..."

borg compact

compact_exit=$?

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

exit ${global_exit}