#!/bin/bash
# /home/aknuth/scripts/backup-invoice-db.sh
# Daily PostgreSQL backup for quote-invoice-system → iDrive e2

set -euo pipefail

BACKUP_DIR="/tmp/invoice-backups"
TIMESTAMP=$(date +%Y%m%d_%H%M%S)
BACKUP_FILE="invoice_db_${TIMESTAMP}.sql.gz"
CONTAINER="quote_db"
DB_USER="quoteuser"
DB_NAME="quotes_db"
RCLONE_REMOTE="invoice-backup:invoice-postgresdb"
RETAIN_DAYS=30

echo "🗄️ [BACKUP] Starting invoice DB backup..."

# Create temp dir
mkdir -p "$BACKUP_DIR"

# Dump and compress
docker exec "$CONTAINER" pg_dump -U "$DB_USER" "$DB_NAME" | gzip > "${BACKUP_DIR}/${BACKUP_FILE}"

FILESIZE=$(du -h "${BACKUP_DIR}/${BACKUP_FILE}" | cut -f1)
echo "📦 Dump complete: ${BACKUP_FILE} (${FILESIZE})"

# Upload to iDrive e2
rclone copy "${BACKUP_DIR}/${BACKUP_FILE}" "$RCLONE_REMOTE/" --log-level INFO
echo "☁️ Uploaded to ${RCLONE_REMOTE}/${BACKUP_FILE}"

# Clean up local temp
rm -f "${BACKUP_DIR}/${BACKUP_FILE}"

# Remove remote backups older than 30 days
rclone delete "$RCLONE_REMOTE" --min-age "${RETAIN_DAYS}d" --log-level INFO
echo "🧹 Remote cleanup done (>${RETAIN_DAYS} days)"

echo "✅ [BACKUP] Invoice DB backup complete."