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

# shellcheck disable=SC1090
source "$SCRIPT_ABS_LOCATION/immich-backup.env"

# shellcheck disable=SC1090
source "$SCRIPT_ABS_LOCATION/../logger.sh"

# Container Names 
DB_CONTAINER="immich_postgres"          
BACKUP_CONTAINER="duplicati"   

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

# Database Settings
DB_USER="postgres"

SOURCE_DIR="/mnt/data/immich"

# Dump Database          
log "Dumping immich postgresql database..."
DB_TMP_BAK_NAME="postgres_$(date +"%Y%m%d").bak"
docker exec -t "$DB_CONTAINER" pg_dumpall \
  --clean \
  --if-exists \
  --username="$DB_USER" \
  --file="/var/lib/postgresql/data/$DB_TMP_BAK_NAME" || { log "Error: Failed to dump the immich database."; exit 1; }

# Backup all files to target destination
log "Backing up immich files and database..."
docker exec "$BACKUP_CONTAINER" duplicati-cli backup "ssh://$BACKUP_DESTINATION" \
  "$SOURCE_DIR/data/library" \
  "$SOURCE_DIR/data/upload" \
  "$SOURCE_DIR/data/profile" \
  "$SOURCE_DIR/postgres/$DB_TMP_BAK_NAME" \
  --backup-name="immich backup" \
  --keep-versions=7 \
  --auth-username="$SFTP_USERNAME" \
  --auth-password="$SFTP_PASSWORD" \
  --passphrase="$BACKUP_ENCR_PASSPHRASE" \
  --ssh-fingerprint="$SFTP_FINGERPRINT" \
  --prefix="immich" || { log "Error: Failed to backup immich files and database."; exit 1; }

# Delete temporary backup files
log "Deleting temporary backup files..."
docker exec "$DB_CONTAINER" rm "/var/lib/postgresql/data/$DB_TMP_BAK_NAME" || { log "Error: Failed to delete temporary backup files."; exit 1; }

log "immich backup completed successfully."