param(
  [string]$OldNamespace = "ircs-system",
  [string]$NewNamespace = "ircs-prod",
  [string]$OldApplication = "ircs-app",
  [string]$ArgoNamespace = "argocd",
  [switch]$Execute
)

$ErrorActionPreference = "Stop"

if (-not $Execute) {
  Write-Host "Dry run only. Planned actions:"
  Write-Host "1. Patch ArgoCD application $OldApplication to disable automated sync."
  Write-Host "2. Apply ircs-prod/edge-cutover HTTPRoutes."
  Write-Host "3. Delete old $OldNamespace huawai-route and ircs-route to avoid hostname/path conflicts."
  Write-Host "4. Wait for new routes to be Accepted and ResolvedRefs."
  Write-Host "Add -Execute to perform cutover."
  exit 0
}

kubectl -n $ArgoNamespace patch application $OldApplication --type merge -p '{"spec":{"syncPolicy":null}}' | Out-Null
kubectl apply -k ircs-prod/edge-cutover | Out-Null
kubectl -n $OldNamespace delete httproute huawai-route ircs-route --ignore-not-found | Out-Null
kubectl -n $NewNamespace wait --for=condition=Accepted httproute/huawai-route --timeout=120s
kubectl -n $NewNamespace wait --for=condition=Accepted httproute/ircs-route --timeout=120s
kubectl -n $NewNamespace get httproute huawai-route ircs-route