#!/bin/bash
SCRIPT_ABS_LOCATION=$(realpath "$(dirname "${0}")")

source $SCRIPT_ABS_LOCATION/portainer-backup.env
source $SCRIPT_ABS_LOCATION/../logger.sh

# Container Names 
APP_CONTAINER="portainer"
BACKUP_CONTAINER="duplicati"   

SOURCE_DIR="/volumes/portainer"
BACKUP_DESTINATION="$BACKUP_DESTINATION"
BACKUP_ENCR_PASSPHRASE="$BACKUP_ENCR_PASSPHRASE"

# Cloud Storage Authentication
SFTP_USERNAME="$SFTP_USERNAME"
SFTP_PASSWORD="$SFTP_PASSWORD"
SFTP_FINGERPRINT="$SFTP_FINGERPRINT"

# Log file
LOG_FILE="$SCRIPT_ABS_LOCATION/portainer-backup.log"

# Stop portainer container 
log "Stopping portainer container..."
docker stop $APP_CONTAINER || { log "Error: Failed to stop portainer."; exit 1; }

# Backup all files to target destination
log "Backing up portainer files (including the SQLite database)..."
docker exec $BACKUP_CONTAINER \
	duplicati-cli backup \
	ssh://$BACKUP_DESTINATION \
	$SOURCE_DIR \
	--backup-name="portainer backup" \
  --keep-versions=7 \
	--auth-username=$SFTP_USERNAME \
	--auth-password=$SFTP_PASSWORD \
	--passphrase=$BACKUP_ENCR_PASSPHRASE \
	--ssh-fingerprint="$SFTP_FINGERPRINT" \
	--prefix="portainer" || { log "Error: Failed to backup portainer files and database."; exit 1; }

# Turn off Maintenance Mode
log "Starting portainer container..."
docker start $APP_CONTAINER || { log "Error: Failed to start portainer container."; exit 1; }

log "portainer backup completed successfully."