#!/usr/bin/env bash
# T69: VirtualService route의 weight는 RDS route의 weighted_clusters로 그대로 번역되는지 검증
set -euo pipefail

NS=istio-vt-t69
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
MANIFEST="${SCRIPT_DIR}/manifest.yaml"

cleanup() {
  echo "--- cleanup: deleting namespace ${NS} ---"
  kubectl delete namespace "${NS}" --wait=false --ignore-not-found
}
trap cleanup EXIT

echo "--- create namespace ${NS} (istio-injection=enabled) ---"
kubectl create namespace "${NS}"
kubectl label namespace "${NS}" istio-injection=enabled --overwrite

echo "--- apply manifest ---"
kubectl apply -f "${MANIFEST}"

echo "--- wait for workloads ---"
kubectl -n "${NS}" wait --for=condition=Ready pod/client --timeout=90s
kubectl -n "${NS}" wait --for=condition=available deploy/weight-echo-v1 deploy/weight-echo-v2 --timeout=60s

sleep 5

echo "--- spec jq query (as originally written; may return null due to vhost index bug -- see notes) ---"
istioctl proxy-config route "client.${NS}" -o json | \
  jq --arg ns "${NS}" '[.[] | select(.virtualHosts[]?.domains[]? == ("weight-echo." + $ns + ".svc.homelab.local"))][0].virtualHosts[0].routes[0].route.weightedClusters.clusters'

echo "--- corrected jq query (selects the actual matching virtualHost, not just index 0) ---"
istioctl proxy-config route "client.${NS}" -o json | \
  jq --arg ns "${NS}" '[.[].virtualHosts[]? | select(.domains[]? == ("weight-echo." + $ns + ".svc.homelab.local"))][0].routes[0].route.weightedClusters.clusters'

echo "--- done ---"