#!/bin/sh
# vim: tabstop=2 shiftwidth=2 expandtab

#set -x

BACKUP_CMD="/sbin/su-exec ${UID}:${GID} /app/backup.sh"

echo "Running $(basename "$0") as $(id)"

# Preparation
BACKUP_DIR=$(dirname "$BACKUP_FILE")
if [ ! -d "$BACKUP_DIR" ]
then
  echo "$BACKUP_DIR not exists. Creating it with owner $UID:$GID and permissions $BACKUP_FILE_PERMISSIONS."
  install -o $UID -g $GID -m $BACKUP_FILE_PERMISSIONS -d $BACKUP_DIR
fi

# For compatibility reasons
if [ "$1" = "/backup.sh" ]; then
  >&2 echo "Using /backup.sh is deprecated and will be removed in future versions! Please use \`manual\` as argument instead"
  $BACKUP_CMD
fi

# Just run the backup script
if [ "$1" = "manual" ]; then
  $BACKUP_CMD
fi

# Initialize cron
if [ "$(id -u)" -eq 0 ] && [ "$(grep -c "$BACKUP_CMD" "$CRONFILE")" -eq 0 ]; then
  echo "Initalizing..."
  echo "Writing backup command \"$BACKUP_CMD\" to cron."
  echo "$CRON_TIME $BACKUP_CMD >> $LOGFILE 2>&1" | crontab -

fi

# Start crond if it's not running
pgrep crond > /dev/null 2>&1
if [ $? -ne 0 ]; then
  /usr/sbin/crond -L /app/log/cron.log
fi

# Restart script as user "app:app"
if [ "$(id -u)" -eq 0 ]; then
  echo "Restarting $(basename "$0") as app:app"
  exec su-exec app:app "$0" "$@"
fi

echo "$(date "+%F %T") - Container started" > "$LOGFILE"
tail -F "$LOGFILE" /app/log/cron.log