#!/bin/bash
# fix-portainer-service.sh — Create the missing headless Service for Portainer agent
# Usage: ./hack/fix-portainer-service.sh
#
# The Portainer agent does a DNS lookup for "portainer-agent" to discover peers.
# Without a Service, this lookup fails and the agent crashes.

set -euo pipefail

KUBECONFIG_URL="http://localhost:8080"

echo "==> Fetching kubeconfig from $KUBECONFIG_URL..."
KUBECONFIG_FILE=$(mktemp)
trap 'rm -f "$KUBECONFIG_FILE"' EXIT

curl -s "$KUBECONFIG_URL" > "$KUBECONFIG_FILE"

if [ ! -s "$KUBECONFIG_FILE" ]; then
    echo "ERROR: Failed to fetch kubeconfig. Is the VM running?"
    exit 1
fi

echo "==> Creating headless Service for portainer-agent..."
kubectl --kubeconfig "$KUBECONFIG_FILE" apply -f - <<'EOF'
apiVersion: v1
kind: Service
metadata:
  name: portainer-agent
  namespace: portainer
spec:
  clusterIP: None
  selector:
    app: portainer-agent
  ports:
    - name: agent
      port: 9001
      targetPort: 9001
      protocol: TCP
EOF

echo "==> Restarting portainer-agent deployment..."
kubectl --kubeconfig "$KUBECONFIG_FILE" rollout restart -n portainer deployment/portainer-agent

echo "==> Waiting for rollout..."
kubectl --kubeconfig "$KUBECONFIG_FILE" rollout status -n portainer deployment/portainer-agent --timeout=120s

echo "==> Done. Checking pod status:"
kubectl --kubeconfig "$KUBECONFIG_FILE" get pods -n portainer