#! /bin/sh
#
# nightly.sh
# Nightly world backups for Minecraft
# Copyright (C) 2020 Vintage Salt <rehashedsalt@cock.li>
#
# Distributed under terms of the MIT license.
#

set -e

export MCDIR="{{ paper_home }}/{{ paper_name }}"
export OUTDIR="$MCDIR/backups"
retention=24 # 1hr intervals

# Helper functions
log() {
	[ -z "$1" ] && return 1
	printf "$(date -Iseconds): $1\n"
}
stuff() {
	[ -z "$1" ] && return 1
	screen -p 0 -S "{{ paper_name }}" -X eval "stuff \"say $1\\015\""
}

# Sanity checks
if ! [ -d "$OUTDIR" ]; then
	if ! mkdir "$OUTDIR"; then
		log "Unable to find or create output directory: $OUTDIR"
		stuff "World backup failed: see log for details"
		retuirn 2
	fi
fi

# Enforce permissions on our output dir
chown -R minecraft-paper. "$OUTDIR"

# Remove old backups
find "$OUTDIR" -type f -mtime +1 -iname "backup-*.tar.gz" -delete

# WE MAKE BACKUP NOW SERGEI
if cd "$OUTDIR"; then
	log "Initiating world backup"
	stuff "Initiating world backup"
	tar czhf "$OUTDIR/backup-$(date -Iseconds).tar.gz" "$MCDIR"/world*
	log "World backup complete"
	stuff "World backup complete"
else
	log "Could not change directory: $OUTDIR"
	stuff "World backup failed: see log for details"
	return 3
fi