#!/bin/sh

BACKUP_DATE=$(date +"%Y-%m-%d")
BACKUP_BASENAME=$S3_BUCKET_NAME$BACKUP_DATE.tar
SKIP_XZ=${ONLY_TAR:-0}

month_day=`date +"%d"`

if [ $SKIP_XZ -ne 0 ]; then
  TAR_PARAM=
  BACKUP_FILENAME=daily_$BACKUP_BASENAME
  BACKUP_FILENAME_MONTHLY=monthly_$BACKUP_BASENAME
else
  TAR_PARAM=-J
  BACKUP_FILENAME=daily_$BACKUP_BASENAME.xz
  BACKUP_FILENAME_MONTHLY=monthly_$BACKUP_BASENAME.xz
fi

rm -f ~/$BACKUP_FILENAME.gpg ~/$BACKUP_FILENAME

healthchck_fail(){
	if [ -n $HEALTHCHECK_URL ]; then
	 	curl -X POST --data $1 --retry 3 $HEALTHCHECK_URL/fail  --silent --output /dev/null
		exit 1
	fi
}

healthchck_start(){
	if [ -n $HEALTHCHECK_URL ]; then
	 	curl -X POST --data $1 --retry 3 $HEALTHCHECK_URL/start  --silent --output /dev/null
	fi
}

healthchck_ok(){
	if [ -n $HEALTHCHECK_URL ]; then
	 	curl -X POST --data $1 --retry 3 $HEALTHCHECK_URL --silent --output /dev/null
	fi
}

healthchck_start "Starting Backup"
cd /backup
echo "make archive"
tar -c ${TAR_PARAM} ${TAR_EXTRA_PARAM} -f ~/$BACKUP_FILENAME ./* || healthchck_fail  "TAR Failed"
cd /
echo " done"

RECIPIENT=$(echo "$GPG_RECIPIENT" | sed "s/,/ --recipient /")

echo "encrypting"
gpg --trust-model always --enable-progress-filter --output ~/$BACKUP_FILENAME.gpg --encrypt --recipient $RECIPIENT ~/$BACKUP_FILENAME || healthchck_fail "Encryption Failed"
rm ~/$BACKUP_FILENAME

echo "uploading"
AWS_ENDPOINT_OPTION=
AWS_STORAGECLASS_OPTION="--storage-class DEEP_ARCHIVE"
if  [ "$AWS_USE_MINIO" -eq 1 ] ; then
  aws configure set default.s3.signature_version s3v4
  AWS_ENDPOINT_OPTION="--endpoint-url https://${MINIO_ENDPOINT}"
  AWS_STORAGECLASS_OPTION=
fi
echo aws ${AWS_ENDPOINT_OPTION} s3 cp ~/$BACKUP_FILENAME.gpg s3://$S3_BUCKET_NAME/$BACKUP_FILENAME.gpg ${AWS_STORAGECLASS_OPTION}  || healthchck_fail "Upload Failed"
aws ${AWS_ENDPOINT_OPTION} s3 cp --no-progress ~/$BACKUP_FILENAME.gpg s3://$S3_BUCKET_NAME/$BACKUP_FILENAME.gpg ${AWS_STORAGECLASS_OPTION}  || healthchck_fail "Upload Failed"
rm ~/$BACKUP_FILENAME.gpg
echo "done"

# On first month day do
if  [ "$AWS_USE_MINIO" -eq 1 ]; then
	echo "no monthly"
else
if [ "$month_day" -eq 1 ] ; then
  echo "make monthly backup"
  aws ${AWS_ENDPOINT_OPTIOM} s3 cp s3://$S3_BUCKET_NAME/$BACKUP_FILENAME.gpg s3://$S3_BUCKET_NAME/$BACKUP_FILENAME_MONTHLY.gpg --storage-class DEEP_ARCHIVE || healthchck_fail "failed to create monthly backup"
fi
fi
healthchck_ok "Success"