From a4456dc4557474924438505c5b36201815461440 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mathias=20Gla=CC=88ser?= <mathias.glaeser@beaufort.ch>
Date: Wed, 12 Aug 2026 15:57:25 +0200
Subject: [PATCH] Fuege ERP-Datenbank-Backupskript hinzu

---
 scripts/db/synology_db_backup.sh | 71 ++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100755 scripts/db/synology_db_backup.sh

diff --git a/scripts/db/synology_db_backup.sh b/scripts/db/synology_db_backup.sh
new file mode 100755
index 0000000..425e4f2
--- /dev/null
+++ b/scripts/db/synology_db_backup.sh
@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+PATH="/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:${PATH:-}"
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "${SCRIPT_DIR}/../.." && pwd)"
+ENV_FILE="${ROOT_DIR}/.env"
+BACKUP_DIR="${BACKUP_DIR:-/volume1/naurua_db_backups/dev}"
+FILE_PREFIX="${FILE_PREFIX:-erpnaurua_dev}"
+PG_DUMP_BIN="${PG_DUMP_BIN:-$(command -v pg_dump || true)}"
+PSQL_BIN="${PSQL_BIN:-$(command -v psql || true)}"
+
+if [[ ! -f "${ENV_FILE}" ]]; then
+  echo "Missing environment file: ${ENV_FILE}" >&2
+  exit 1
+fi
+
+set -a
+# shellcheck disable=SC1090
+. "${ENV_FILE}"
+set +a
+
+for required_var in DB_HOST DB_PORT DB_NAME DB_USER DB_PASSWORD; do
+  if [[ -z "${!required_var:-}" ]]; then
+    echo "Missing required database setting: ${required_var}" >&2
+    exit 1
+  fi
+done
+
+if [[ -z "${PG_DUMP_BIN}" || ! -x "${PG_DUMP_BIN}" ]]; then
+  echo "Compatible pg_dump is required. Set PG_DUMP_BIN to a PostgreSQL client binary." >&2
+  exit 1
+fi
+if [[ -z "${PSQL_BIN}" || ! -x "${PSQL_BIN}" ]]; then
+  echo "psql is required." >&2
+  exit 1
+fi
+
+export PGPASSWORD="${DB_PASSWORD}"
+server_version_num="$("${PSQL_BIN}" -h "${DB_HOST}" -p "${DB_PORT}" -U "${DB_USER}" -d "${DB_NAME}" -X -Atqc 'SHOW server_version_num')"
+client_version="$("${PG_DUMP_BIN}" --version | sed -E 's/.*PostgreSQL ([0-9]+).*/\1/')"
+server_major="${server_version_num:0:${#server_version_num}-4}"
+
+if [[ -z "${server_major}" || -z "${client_version}" || "${server_major}" != "${client_version}" ]]; then
+  echo "pg_dump major version mismatch: server=${server_major:-unknown}, client=${client_version:-unknown}" >&2
+  exit 1
+fi
+
+mkdir -p "${BACKUP_DIR}"
+timestamp="$(date +%Y%m%d_%H%M%S)"
+output_file="${BACKUP_DIR}/${FILE_PREFIX}_${DB_NAME}_${timestamp}.dump"
+temporary_file="${output_file}.tmp"
+
+cleanup() { rm -f "${temporary_file}"; }
+trap cleanup EXIT
+
+"${PG_DUMP_BIN}" -h "${DB_HOST}" -p "${DB_PORT}" -U "${DB_USER}" -d "${DB_NAME}" \
+  --format=custom --no-owner --no-privileges > "${temporary_file}"
+
+if [[ ! -s "${temporary_file}" ]]; then
+  echo "Backup failed: dump file is empty." >&2
+  exit 1
+fi
+
+mv -f "${temporary_file}" "${output_file}"
+trap - EXIT
+
+find "${BACKUP_DIR}" -maxdepth 1 -type f -name "${FILE_PREFIX}_${DB_NAME}_*.dump" \
+  -printf '%T@ %p\n' | sort -nr | tail -n +21 | cut -d' ' -f2- | xargs -r rm -f
+
+printf '%s\n' "Backup created: ${output_file}"