#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ROOT_DIR="$(dirname "$SCRIPT_DIR")"
INVENTORY="$ROOT_DIR/infra/ansible/inventory/hosts.yaml"

# Auto-detect server IP from Ansible inventory, or use env override
if [[ -z "${K3S_SERVER_HOST:-}" ]] && [[ -f "$INVENTORY" ]]; then
  SERVER_HOST=$(grep -A1 'k3s_role: server' "$INVENTORY" | grep ansible_host | awk '{print $2}' | head -1)
fi
SERVER_HOST="${SERVER_HOST:-${K3S_SERVER_HOST:-192.168.1.50}}"
SSH_USER="${SSH_USER:-julia}"
KUBECONFIG_PATH="${KUBECONFIG_PATH:-$HOME/.kube/homelab}"

echo "Fetching kubeconfig from ${SERVER_HOST}..."

ssh "${SSH_USER}@${SERVER_HOST}" "sudo cat /etc/rancher/k3s/k3s.yaml" \
  | sed "s/127.0.0.1/${SERVER_HOST}/g" \
  > "$KUBECONFIG_PATH"

chmod 600 "$KUBECONFIG_PATH"

echo "Kubeconfig written to ${KUBECONFIG_PATH}"
echo ""
echo "To use:"
echo "  export KUBECONFIG=${KUBECONFIG_PATH}"
echo "  kubectl get nodes"