#!/usr/bin/env bash
# 2024-01-29 Hyperling
# Create a backup file with a generic name for polling.

DIR="$(dirname -- "${BASH_SOURCE[0]}")"
PROG="$(basename -- "${BASH_SOURCE[0]}")"
echo "$DIR/$PROG"
source $DIR/../source.env

## Variables ##

TAG="Docker"
DATE="`date "+%Y%m%d-%H%M%S"`"
BACKUP_DIR="/srv/backup"
BASENAME="$BACKUP_DIR/Backup"
file="$BASENAME.$DATE.$HOSTNAME.$TAG.zip"
time="`which time`"

## Main ##

# Ensure backup directory exists with correct permissions.
mkdir -pv "$BACKUP_DIR"
chmod -Rv 755 "$BACKUP_DIR"
chown -Rv root:root "$BACKUP_DIR"
cd "$BACKUP_DIR"

# Remove the last backup.
echo "`date` - Removing existing files."
mv -v "$BASENAME"*"$TAG"* ~/TRASH/
rm -v ~/TRASH/"${BASENAME}*${TAG}*.zip"

echo -e "\n`date` - Take down services for a cold backup."
manage.sh -d

echo -e "\n`date` - Create the backup for '$DOCKER_HOME'."
$time zip -r $file.tmp \
	$DOCKER_HOME \
	/etc/crontab /etc/cron.d /var/spool/cron \
	/var/{log,mail} 1>/dev/null
mv -v $file.tmp $file

echo -e "\n`date` - Done with zipping, check size."
ls -sh $file

echo -e "\n`date` - Ensure other users can access the file."
chmod -v 755 $file

echo -e "\n`date` - Bring services back up."
manage.sh -u

## Finish ##

echo -e "\n`date` - Done!"
exit 0