#!/bin/bash

now=$(date +"%s")
backup_dir="/backup/$now"

# functions

log() {
	echo "[$(date)] $*"
}

backup_pg_db() {
	sudo -iu postgres pg_dump -Fc "$1" > "${backup_dir}/${1}.dump"
}

backup_dir() {
	tar cpf "${backup_dir}/${1}.tar" "$2"
}
# main

if [ $UID != "0" ]; then
	echo "You must run it as root."
	exit 1
fi

echo -n "Start backup? (y/n) "
read choice
if [ $choice == y ]; then
	mkdir -p "${backup_dir}"
	log "Starting backup."


	log "Backing up /opt..."
	backup_dir opt /opt
	log "/opt is backed up, starting to backup nextcloud..."
	backup_dir nextcloud /var/www/nextcloud
	log "Nextcloud is backed up, starting to backup game servers..."
	backup_dir servers /home/servers
	log "Servers are backed up, starting to backup mailbox."
	backup_dir mail /var/mail
	log "Mail are backed up, starting to backup peertube"
	backup_dir peertube /var/www/peertube
	log "Peertube are backed up, starting to backup DBs..."

	log "Backing up synapse DB"
	backup_pg_db synapse
	log "Synapse DB is backed up, backing up nextcloud DB..."
	backup_pg_db nextclouddb
	log "Nextcloud DB is backed up, backing up pleroma DB..."
	backup_pg_db pleroma
	log "Pleroma DB is backed up, backing up peerube DB..."
	backup_pg_db peertube_prod
	log "Peertube DB is backed up, compiling all to one and sending to pomoika..."
	tar cvf "${backup_dir}.tar" "${backup_dir}"
	log "Done! Now you can restore it!"
else
	log "Cancelled."
fi

### to restore
#
#pg_restore -d postgres --clean --create "file backup"