From 0dd8b13d621d5043da8493bfa61d49602a5923cd Mon Sep 17 00:00:00 2001
From: ZdenekSrotyr <zdenek.srotyr@keboola.com>
Date: Tue, 21 Apr 2026 15:34:35 +0200
Subject: [PATCH] infra: add fetch-env-from-secrets.sh for VM-side .env
 generation

Reads JWT_SECRET_KEY and KEBOOLA_STORAGE_TOKEN from Secret Manager,
combines with non-secret config, writes .env with chmod 600.
Run as part of VM startup or manually for rotation.
---
 scripts/fetch-env-from-secrets.sh | 44 +++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100755 scripts/fetch-env-from-secrets.sh

diff --git a/scripts/fetch-env-from-secrets.sh b/scripts/fetch-env-from-secrets.sh
new file mode 100755
index 0000000..d0de77a
--- /dev/null
+++ b/scripts/fetch-env-from-secrets.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+# Stáhne secrets z GCP Secret Manageru a vytvoří .env pro Agnes.
+# Spouští se na VM pod uživatelem, který má gcloud přístup k Secret Manageru
+# (typicky přes VM service account s roles/secretmanager.secretAccessor).
+#
+# Usage: ./fetch-env-from-secrets.sh [APP_DIR]
+# Default APP_DIR: /home/deploy/app
+set -euo pipefail
+
+APP_DIR="${1:-${APP_DIR:-/home/deploy/app}}"
+ENV_FILE="${APP_DIR}/.env"
+
+# Non-secret config (override via environment or hardcoded defaults)
+DATA_SOURCE="${DATA_SOURCE:-keboola}"
+KEBOOLA_STACK_URL="${KEBOOLA_STACK_URL:-https://connection.us-east4.gcp.keboola.com/}"
+SEED_ADMIN_EMAIL="${SEED_ADMIN_EMAIL:-zdenek.srotyr@keboola.com}"
+LOG_LEVEL="${LOG_LEVEL:-info}"
+DATA_DIR="${DATA_DIR:-/data}"
+AGNES_TAG="${AGNES_TAG:-stable}"
+
+echo "Fetching secrets from Secret Manager..."
+JWT_KEY=$(gcloud secrets versions access latest --secret=jwt-secret-key)
+KEBOOLA_TOKEN=""
+if [ "$DATA_SOURCE" = "keboola" ]; then
+    KEBOOLA_TOKEN=$(gcloud secrets versions access latest --secret=keboola-storage-token)
+fi
+
+echo "Writing ${ENV_FILE}..."
+cat > "${ENV_FILE}" <<EOF
+JWT_SECRET_KEY=${JWT_KEY}
+DATA_DIR=${DATA_DIR}
+DATA_SOURCE=${DATA_SOURCE}
+KEBOOLA_STORAGE_TOKEN=${KEBOOLA_TOKEN}
+KEBOOLA_STACK_URL=${KEBOOLA_STACK_URL}
+SEED_ADMIN_EMAIL=${SEED_ADMIN_EMAIL}
+LOG_LEVEL=${LOG_LEVEL}
+AGNES_TAG=${AGNES_TAG}
+EOF
+
+chmod 600 "${ENV_FILE}"
+# Chown je best-effort — pokud skript neběží jako root, ignoruj
+chown deploy:deploy "${ENV_FILE}" 2>/dev/null || true
+
+echo "Done. ${ENV_FILE} has $(wc -l < "${ENV_FILE}") lines, chmod 600."