apiVersion: addons.projectcapsule.dev/v1alpha1
kind: ChangeWindow
metadata:
  name: development-downtime
spec:
  namespaceSelectors:
    - matchLabels:
        environment: development
    - matchLabels:
        environment: staging
  schedules:
    - name: weekday-nights
      cron: "0 19 * * 1-5"
      timeZone: Europe/Zurich
      duration: 12h
    - name: weekend
      cron: "0 7 * * 6"
      timeZone: Europe/Zurich
      duration: 48h
  serviceAccount:
    namespace: schedule-action-controller-system
    name: change-window-executor
  targets:
    - name: deployments
      apiVersion: apps/v1
      kind: Deployment
      selector:
        matchLabels:
          downscaling: enabled
  actions:
    - name: downscale
      targets: [deployments]
      capture:
        replicas:
          subresource: scale
          path: /spec/replicas
      onStart:
        apply:
          subresource: scale
          force: true
          template: |
            spec:
              replicas: 0
      onEnd:
        apply:
          subresource: scale
          template: |
            spec:
              replicas: {{ .captured.replicas }}
  admission:
    - name: freeze-deployments
      targets: [deployments]
      operations: [CREATE, UPDATE, DELETE]
      subresources: ["", scale]
      when: Active
      action: Deny
      message: >-
        Deployment changes are blocked during maintenance. Retry after {{ .window.end }}.
  config:
    admission:
      warnings:
        - name: upcoming-maintenance
          targets: [deployments]
          operations: [CREATE, UPDATE, DELETE]
          subresources: ["", scale]
          when: BeforeStart
          within: 1h
          message: >-
            Maintenance starts at {{ .window.start }} (in {{ .window.startsIn }}).
        - name: active-maintenance
          targets: [deployments]
          operations: [CREATE, UPDATE, DELETE]
          subresources: ["", scale]
          when: Active
          message: Maintenance is active until {{ .window.end }}.