#!/bin/bash

# Migrate addons and network values from local kubeadm-values.yaml on controllers into CM
# - remove secrets from addons
# - enable cilium
        
# Create kubeadm-values CM if not available
kubectl get cm -n kube-system kubeadm-values || \
kubectl create configmap -n kube-system kubeadm-values

kubectl get cm -n kube-system kubezero-values || \
kubectl create configmap -n kube-system kubezero-values

# tweak local kubeadm for upgrade later on
yq eval -i '.global.clusterName = strenv(CLUSTERNAME) |
            .global.highAvailable = env(HIGHAVAILABLE)' \
  ${HOSTFS}/etc/kubernetes/kubeadm-values.yaml

# extract addons
yq e '.addons |
      del .clusterBackup.repository |
      del .clusterBackup.password |
      .clusterBackup.image.tag = strenv(KUBE_VERSION) |
      {"addons": .}' ${HOSTFS}/etc/kubernetes/kubeadm-values.yaml > $WORKDIR/addons-values.yaml

# extract network
yq e '.network |
      .cilium.enabled = true |
      .multus.defaultNetworks = ["cilium"] |
      .cilium.cluster.name = strenv(CLUSTERNAME) |
      {"network": .}' ${HOSTFS}/etc/kubernetes/kubeadm-values.yaml > $WORKDIR/network-values.yaml

# get current argo cd values
kubectl get application kubezero -n argocd -o yaml | yq .spec.source.helm.values > ${WORKDIR}/argo-values.yaml

# merge all into new CM
yq ea '. as $item ireduce ({}; . * $item ) |
       .global.clusterName = strenv(CLUSTERNAME) |
       .global.highAvailable = env(HIGHAVAILABLE)' $WORKDIR/addons-values.yaml ${WORKDIR}/network-values.yaml $WORKDIR/argo-values.yaml > $WORKDIR/kubezero-values.yaml


# Update kubezero-values CM
kubectl get cm -n kube-system kubezero-values -o=yaml | \
  yq e '.data."values.yaml" |= load_str("/tmp/kubezero/kubezero-values.yaml")' | \
  kubectl replace -f -


kubezero_chart_version=$(yq .version /charts/kubezero/Chart.yaml)

# update argo app, create new from scratch as Argo is really picky being patched
# autosync DISABLED !!!

cat > $WORKDIR/kube-argo.yaml <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: kubezero
  namespace: argocd
spec:
  project: kubezero
  source:
    repoURL: https://cdn.zero-downtime.net/charts
    chart: kubezero
    targetRevision: $kubezero_chart_version
  destination:
    server: https://kubernetes.default.svc
    namespace: argocd
  syncPolicy: {}
EOF

yq eval -i '.spec.source.helm.values |= load_str("/tmp/kubezero/kubezero-values.yaml")' $WORKDIR/kube-argo.yaml
kubectl apply -f $WORKDIR/kube-argo.yaml