#!/usr/bin/env bash
set -Eeuo pipefail
IFS=$'\n\t'

CLUSTER_NAME="${CLUSTER_NAME:-lab-cluster}"
RUNNER_NAME="${GITEA_RUNNER_CONTAINER:-gitea-runner}"
KUBECONFIG_PATH="${KUBECONFIG_PATH:-/DATA/.kube/config}"

echo "== Desactivando watchdog anterior =="
sudo systemctl disable --now k3d-lab-ensure.timer 2>/dev/null || true
sudo systemctl stop k3d-lab-ensure.service 2>/dev/null || true
sudo systemctl reset-failed k3d-lab-ensure.service 2>/dev/null || true

mapfile -t cluster_containers < <(
  docker ps -aq --filter "label=k3d.cluster=${CLUSTER_NAME}"
)

if (( ${#cluster_containers[@]} == 0 )); then
  echo "ERROR: no se encontraron contenedores del clúster ${CLUSTER_NAME}." >&2
  exit 1
fi

echo "== Restaurando políticas confirmadas =="
docker update --restart=unless-stopped "${cluster_containers[@]}" >/dev/null

if docker inspect "$RUNNER_NAME" >/dev/null 2>&1; then
  docker update --restart=unless-stopped "$RUNNER_NAME" >/dev/null
  if [[ "$(docker inspect -f '{{.State.Running}}' "$RUNNER_NAME")" != "true" ]]; then
    docker start "$RUNNER_NAME" >/dev/null
  fi
fi

echo "== Recuperando k3d sin detener nodos activos =="
if ! k3d cluster start "$CLUSTER_NAME" --wait --timeout 360s; then
  echo "AVISO: k3d devolvió error; se esperará la API porque K3s puede continuar iniciando." >&2
fi

export KUBECONFIG="$KUBECONFIG_PATH"

deadline=$((SECONDS + 360))
while (( SECONDS < deadline )); do
  if kubectl get --raw=/readyz --request-timeout=5s >/dev/null 2>&1; then
    break
  fi
  sleep 5
done

kubectl get --raw=/readyz --request-timeout=5s >/dev/null
kubectl wait --for=condition=Ready nodes --all --timeout=300s

echo
echo "== Estado final =="
k3d cluster list
kubectl get nodes
docker ps --filter "name=${RUNNER_NAME}"

echo
echo "OK: políticas estables y runtime recuperados."