#!/bin/bash
set -euo pipefail
TIMESTAMP=$(date +%Y%m%d_%H%M%S)
BACKUP_DIR="${BACKUP_DIR:-/var/backups/salon_pos}"
DB_NAME="salon_pos"
RETAIN_DAYS="${BACKUP_RETAIN_DAYS:-30}"

mkdir -p "$BACKUP_DIR"
mysqldump --defaults-file=/etc/mysql/backup.cnf "$DB_NAME" \
  | gzip > "$BACKUP_DIR/salon_pos_$TIMESTAMP.sql.gz"

find "$BACKUP_DIR" -name "*.sql.gz" -mtime +"$RETAIN_DAYS" -delete
echo "[$(date)] Backup completed: salon_pos_$TIMESTAMP.sql.gz"