----------------------helmfile.yaml
---
bases:
  - envs/environments.yaml

---
helmfiles:
  - "open-portal.yaml"

----------------------open-portal.yaml
---
bases:
  - envs/environments.yaml
---
releases:
- name: "open-portal"
  namespace: {{ .Environment.Values.helm.open_portal.namespace }}
  labels:
    chart: "open-portal"
  chart: "./open-portal"
#  wait: true
  installed: true
  set:
{{ if eq .Environment.Values.helm.open_portal.namespace "ns-green" }}
    - route.host: {{ .Environment.Values.helm.open_portal.route.host }}
{{ else if eq .Environment.Values.helm.open_portal.namespace "ns-blue"  }}
    - route.host: {{ .Environment.Values.helm.open_portal.route.host }}
{{ end }}
  values:
    - ./open-portal/values-prod.yaml

---------------------envs/environments.yaml

environments:
  green:
    values:
      - envs/green.yaml
  blue:
    values:
      - envs/blue.yaml
------------------------envs/green.yaml

helm:
  open_portal:
    namespace: ns-green
    route:
      host: portal-green.local
    env:
      LOG_LVL: INFO