fix: adding db recovery practices (bye bye db)

scripts/validate-prod-db-target.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ENV_FILE="${ENV_FILE:-./.env}"
+if [[ -f "$ENV_FILE" ]]; then
+  set -a
+  # shellcheck source=/dev/null
+  . "$ENV_FILE"
+  set +a
+fi
+
+if [[ -z "${DATABASE_URL:-}" ]]; then
+  echo "DATABASE_URL is required."
+  exit 1
+fi
+
+if [[ -z "${EXPECTED_PROD_DB_HOST:-}" || -z "${EXPECTED_PROD_DB_NAME:-}" ]]; then
+  echo "EXPECTED_PROD_DB_HOST and EXPECTED_PROD_DB_NAME are required."
+  exit 1
+fi
+
+extract_host() {
+  local url="$1"
+  sed -E 's#^[a-zA-Z][a-zA-Z0-9+.-]*://[^@/]+@([^/:?]+).*$#\1#' <<< "$url"
+}
+
+extract_db() {
+  local url="$1"
+  sed -E 's#^[a-zA-Z][a-zA-Z0-9+.-]*://[^/]+/([^?]+).*$#\1#' <<< "$url"
+}
+
+ACTUAL_HOST="$(extract_host "$DATABASE_URL")"
+ACTUAL_DB="$(extract_db "$DATABASE_URL")"
+
+if [[ "$ACTUAL_HOST" == "$DATABASE_URL" || "$ACTUAL_DB" == "$DATABASE_URL" ]]; then
+  echo "Unable to parse DATABASE_URL."
+  exit 1
+fi
+
+if [[ "$ACTUAL_HOST" != "$EXPECTED_PROD_DB_HOST" ]]; then
+  echo "DATABASE_URL host mismatch. expected=$EXPECTED_PROD_DB_HOST actual=$ACTUAL_HOST"
+  exit 1
+fi
+
+if [[ "$ACTUAL_DB" != "$EXPECTED_PROD_DB_NAME" ]]; then
+  echo "DATABASE_URL db mismatch. expected=$EXPECTED_PROD_DB_NAME actual=$ACTUAL_DB"
+  exit 1
+fi
+
+echo "DATABASE_URL target check passed (host=$ACTUAL_HOST db=$ACTUAL_DB)."