rabbitmqctl add_vhost app_notifications
rabbitmqctl add_user backend-api-internal strongpassword
rabbitmqctl set_user_tags backend-api-internal management
rabbitmqctl set_permissions -p app_notifications backend-api-internal ".*" ".*" ".*"
rabbitmqadmin declare exchange --vhost "app_notifications" --name "app_notifications"   --type "topic"   --durable "true"
rabbitmqadmin declare queue  --vhost "app_notifications"   --name "notifications_retry" --durable "true"
rabbitmqadmin declare queue  --vhost "app_notifications"   --name "notifications_dlq" --durable "true"
rabbitmqadmin declare queue  --vhost "app_notifications"   --name "notifications" --durable "true"
rabbitmqadmin declare binding --vhost "app_notifications" --source "app_notifications" --destination "notifications" --destination-type "queue" --routing-key "notify.#"

 # Retry policy: messages stay for 30s before going back to main queue
rabbitmqctl set_policy \
  --vhost app_notifications \
  retry_policy "^notifications_retry$" \
  '{"dead-letter-exchange":"app_notifications",
    "dead-letter-routing-key":"notify.retry",
    "message-ttl":30000}' \
  --apply-to queues

# DLQ policy: permanent dead letter storage
rabbitmqctl set_policy \
  --vhost app_notifications \
  dlq_policy "^notifications$" \
  '{"dead-letter-exchange":"app_notifications",
    "dead-letter-routing-key":"notify.dlq"}' \
  --apply-to queues