apiVersion: batch/v1
kind: CronJob
metadata:
  name: snapshot-creator
spec:
  schedule: "@daily"
  jobTemplate:
    spec:
      template:
        spec:
          restartPolicy: OnFailure
          serviceAccountName: forgejo-snapshot
          initContainers:
          - name: template-snapshot-name
            image: bitnami/kubectl:1.27.1
            command: ["/bin/sh"]
            args:
            - -c
            - |-
                sed \
                -e "s/TEMPLATE_NAME/forgejo-snapshot-$(date -u --rfc-3339=date)/" \
                -e "s/TEMPLATE_PVC_NAME/forgejo-data-forgejo-0/" \
                < /in/forgejo-volume-snapshot-template.yaml \
                > /out/forgejo-volume-snapshot.yaml
            volumeMounts:
            - name: snapshot-template
              mountPath: /in
            - name: snapshot-yaml
              mountPath: /out
          containers:
          - name: create-volume-snapshot
            image: bitnami/kubectl:1.27.1
            args:
            - -n
            - $(POD_NAMESPACE)
            - apply
            - -f
            - /in/forgejo-volume-snapshot.yaml
            env:
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
            volumeMounts:
            - name: snapshot-yaml
              mountPath: /in
          - name: cleanup-volume-snapshot
            image: bitnami/kubectl:1.27.1
            command: ["sh"]
            args:
            - -c
            - |-
                datestr="$(date -d '2 weeks ago' -Ins --utc | sed 's/+0000/Z/')"
                kubectl -n forgejo get volumesnapshots \
                  --template '{{range .items}}{{.metadata.name}} {{.metadata.creationTimestamp}}{{"\n"}}{{end}}' \
                | while read snapshot_name snapshot_date; do
                  echo "$snapshot_name" "$snapshot_date" "$datestr" | awk '$2 <= $3 { print $1 }'
                done \
                | xargs -n 1 kubectl -n $(POD_NAMESPACE) delete volumesnapshot "$snapshot_name"
            env:
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
          volumes:
          - name: snapshot-template
            configMap:
              name: forgejo-volume-snapshot-template
          - name: snapshot-yaml
            emptyDir: {}