# Option A — age-encrypted logical dumps → Nextcloud WebDAV (RAILIANCE-WP-0015).
#
# Decided approach (not barman ScheduledBackup). Applies to CoulombCore
# databases namespace clusters: apps-pg, gitea-db, net-kingdom-pg, state-hub-db.
#
# Unattended path (primary): workstation cron (same pattern as forgejo-backup).
# CoulombCore pods cannot reach github.com / Alpine CDN to fetch `age`, so
# in-cluster CronJobs are shipped **suspended**. Enable only after an image
# with kubectl+age+curl is available in-cluster.
#
# Prereqs:
#   1. OpenBao lane CCR-2026-0004 resolvable
#   2. make cnpg-backup-offsite-secret-apply   # Secret cnpg-backup-offsite
#   3. kubectl apply -f manifests/cnpg-option-a-backup.yaml
#   4. Install workstation cron (see schedule ConfigMap / docs)
#
# Schedule: daily 02:30 UTC (RPO 24h). Retention target 14 daily + 4 weekly
# is enforced on the Nextcloud side / operator prune.
#
# Health: make cnpg-backup-status
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: cnpg-option-a-schedule
  namespace: databases
  labels:
    app.kubernetes.io/part-of: railiance-apps
    railiance.apps/backup-lane: option-a
data:
  mode: workstation-cron
  schedule: "30 2 * * *"
  command: "cd $HOME/railiance-apps && make cnpg-logical-backup"
  clusters: "apps-pg,gitea-db,net-kingdom-pg,state-hub-db"
  rpo_hours: "24"
  rto_hours: "4"
  retention: "14 daily + 4 weekly (Nextcloud operator prune)"
  note: "In-cluster CronJobs suspended until image with age is available without egress installs"
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: cnpg-logical-backup
  namespace: databases
  labels:
    app.kubernetes.io/part-of: railiance-apps
    railiance.apps/backup-lane: option-a
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: cnpg-logical-backup
  namespace: databases
  labels:
    app.kubernetes.io/part-of: railiance-apps
    railiance.apps/backup-lane: option-a
rules:
  - apiGroups: [""]
    resources: ["pods"]
    verbs: ["get", "list"]
  - apiGroups: [""]
    resources: ["pods/exec"]
    verbs: ["create"]
  - apiGroups: [""]
    resources: ["configmaps"]
    verbs: ["get", "create", "update", "patch"]
  - apiGroups: [""]
    resources: ["secrets"]
    resourceNames: ["cnpg-backup-offsite"]
    verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: cnpg-logical-backup
  namespace: databases
  labels:
    app.kubernetes.io/part-of: railiance-apps
    railiance.apps/backup-lane: option-a
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: cnpg-logical-backup
subjects:
  - kind: ServiceAccount
    name: cnpg-logical-backup
    namespace: databases
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: cnpg-option-a-runner
  namespace: databases
  labels:
    app.kubernetes.io/part-of: railiance-apps
    railiance.apps/backup-lane: option-a
data:
  run-backup.sh: |
    #!/bin/sh
    # In-cluster Option A runner. Env: CLUSTER, DATABASES (comma-separated).
    set -eu
    CLUSTER="${CLUSTER:?CLUSTER required}"
    DATABASES="${DATABASES:?DATABASES required}"
    NAMESPACE="${NAMESPACE:-databases}"
    STATUS_CM="${STATUS_CM:-cnpg-option-a-status}"
    WORK=/tmp/backup-work
    mkdir -p "$WORK"

    # Prefer distro package (cluster often cannot reach github.com).
    if ! command -v age >/dev/null 2>&1; then
      echo "install age via apk"
      apk add --no-cache age >/dev/null
    fi
    if ! command -v age >/dev/null 2>&1; then
      echo "ERROR: age not available (apk install failed; github fallback disabled)" >&2
      exit 1
    fi
    AGE_BIN="$(command -v age)"

    NC_TOKEN="$(cat /secrets/offsite/NC_WEBDAV_TOKEN)"
    NC_URL="$(cat /secrets/offsite/NC_WEBDAV_URL)"
    AGE_PUB="$(cat /secrets/offsite/AGE_PUBLIC_KEY)"
    # filesdrop shares often need token-only URL form
    case "$NC_URL" in
      */) ;;
      *) NC_URL="${NC_URL}/" ;;
    esac

    POD="$(kubectl get pods -n "$NAMESPACE" \
      -l "cnpg.io/cluster=${CLUSTER},role=primary" \
      -o jsonpath='{.items[0].metadata.name}')"
    if [ -z "$POD" ]; then
      echo "ERROR: primary pod not found for ${CLUSTER}" >&2
      exit 1
    fi
    echo "cluster=${CLUSTER} pod=${POD}"

    TS="$(date -u +%Y%m%dT%H%M%SZ)"
    OLD_IFS=$IFS
    IFS=,
    for db in $DATABASES; do
      IFS=$OLD_IFS
      plain="${WORK}/${CLUSTER}-${db}-${TS}.dump"
      aged="${plain}.age"
      echo "dump ${db}"
      kubectl exec -n "$NAMESPACE" "$POD" -c postgres -- \
        pg_dump -U postgres -d "$db" -Fc --no-owner --no-acl >"$plain"
      "$AGE_BIN" -r "$AGE_PUB" -o "$aged" "$plain"
      rm -f "$plain"
      remote="${CLUSTER}/${CLUSTER}-${db}-${TS}.dump.age"
      dest="${NC_URL}${remote}"
      echo "upload ${remote}"
      curl -sf -u "${NC_TOKEN}:" -T "$aged" "$dest"
      # weekly on Sunday UTC
      if [ "$(date -u +%u)" = "7" ]; then
        curl -sf -u "${NC_TOKEN}:" -T "$aged" \
          "${NC_URL}${CLUSTER}/${CLUSTER}-${db}-weekly-${TS}.dump.age" || true
      fi
      rm -f "$aged"
    done
    IFS=$OLD_IFS

    # Record last success for cnpg-backup-status
    if kubectl get configmap "$STATUS_CM" -n "$NAMESPACE" >/dev/null 2>&1; then
      kubectl patch configmap "$STATUS_CM" -n "$NAMESPACE" --type merge \
        -p "{\"data\":{\"${CLUSTER}\":\"${TS}\",\"updated\":\"${TS}\",\"lane\":\"option-a\"}}"
    else
      kubectl create configmap "$STATUS_CM" -n "$NAMESPACE" \
        --from-literal="${CLUSTER}=${TS}" \
        --from-literal=updated="${TS}" \
        --from-literal=lane=option-a
    fi
    kubectl label configmap "$STATUS_CM" -n "$NAMESPACE" \
      railiance.apps/backup-lane=option-a --overwrite >/dev/null
    echo "ok: ${CLUSTER} backup ${TS}"
---
# Shared pod template fields are repeated per CronJob for readability (no Kustomize).
apiVersion: batch/v1
kind: CronJob
metadata:
  name: cnpg-logical-backup-apps-pg
  namespace: databases
  labels:
    app.kubernetes.io/part-of: railiance-apps
    railiance.apps/backup-lane: option-a
    railiance.apps/backup-cluster: apps-pg
spec:
  schedule: "30 2 * * *"
  suspend: true
  concurrencyPolicy: Forbid
  successfulJobsHistoryLimit: 3
  failedJobsHistoryLimit: 3
  jobTemplate:
    spec:
      backoffLimit: 1
      activeDeadlineSeconds: 7200
      template:
        metadata:
          labels:
            railiance.apps/backup-lane: option-a
            railiance.apps/backup-cluster: apps-pg
        spec:
          serviceAccountName: cnpg-logical-backup
          restartPolicy: Never
          containers:
            - name: backup
              image: alpine/k8s:1.31.12
              imagePullPolicy: IfNotPresent
              env:
                - name: CLUSTER
                  value: apps-pg
                - name: DATABASES
                  value: apps_meta,core_hub,core_hub_staging,vergabe_db
                - name: NAMESPACE
                  value: databases
              command: ["/bin/sh", "/runner/run-backup.sh"]
              volumeMounts:
                - name: runner
                  mountPath: /runner
                  readOnly: true
                - name: offsite
                  mountPath: /secrets/offsite
                  readOnly: true
              resources:
                requests:
                  cpu: 100m
                  memory: 256Mi
                limits:
                  cpu: "1"
                  memory: 1Gi
          volumes:
            - name: runner
              configMap:
                name: cnpg-option-a-runner
                defaultMode: 0755
            - name: offsite
              secret:
                secretName: cnpg-backup-offsite
---
apiVersion: batch/v1
kind: CronJob
metadata:
  name: cnpg-logical-backup-gitea-db
  namespace: databases
  labels:
    app.kubernetes.io/part-of: railiance-apps
    railiance.apps/backup-lane: option-a
    railiance.apps/backup-cluster: gitea-db
spec:
  schedule: "35 2 * * *"
  suspend: true
  concurrencyPolicy: Forbid
  successfulJobsHistoryLimit: 3
  failedJobsHistoryLimit: 3
  jobTemplate:
    spec:
      backoffLimit: 1
      activeDeadlineSeconds: 7200
      template:
        metadata:
          labels:
            railiance.apps/backup-lane: option-a
            railiance.apps/backup-cluster: gitea-db
        spec:
          serviceAccountName: cnpg-logical-backup
          restartPolicy: Never
          containers:
            - name: backup
              image: alpine/k8s:1.31.12
              imagePullPolicy: IfNotPresent
              env:
                - name: CLUSTER
                  value: gitea-db
                - name: DATABASES
                  value: gitea
                - name: NAMESPACE
                  value: databases
              command: ["/bin/sh", "/runner/run-backup.sh"]
              volumeMounts:
                - name: runner
                  mountPath: /runner
                  readOnly: true
                - name: offsite
                  mountPath: /secrets/offsite
                  readOnly: true
              resources:
                requests:
                  cpu: 100m
                  memory: 256Mi
                limits:
                  cpu: "1"
                  memory: 1Gi
          volumes:
            - name: runner
              configMap:
                name: cnpg-option-a-runner
                defaultMode: 0755
            - name: offsite
              secret:
                secretName: cnpg-backup-offsite
---
apiVersion: batch/v1
kind: CronJob
metadata:
  name: cnpg-logical-backup-net-kingdom-pg
  namespace: databases
  labels:
    app.kubernetes.io/part-of: railiance-apps
    railiance.apps/backup-lane: option-a
    railiance.apps/backup-cluster: net-kingdom-pg
spec:
  schedule: "40 2 * * *"
  suspend: true
  concurrencyPolicy: Forbid
  successfulJobsHistoryLimit: 3
  failedJobsHistoryLimit: 3
  jobTemplate:
    spec:
      backoffLimit: 1
      activeDeadlineSeconds: 7200
      template:
        metadata:
          labels:
            railiance.apps/backup-lane: option-a
            railiance.apps/backup-cluster: net-kingdom-pg
        spec:
          serviceAccountName: cnpg-logical-backup
          restartPolicy: Never
          containers:
            - name: backup
              image: alpine/k8s:1.31.12
              imagePullPolicy: IfNotPresent
              env:
                - name: CLUSTER
                  value: net-kingdom-pg
                - name: DATABASES
                  value: interhub,privacyidea_db
                - name: NAMESPACE
                  value: databases
              command: ["/bin/sh", "/runner/run-backup.sh"]
              volumeMounts:
                - name: runner
                  mountPath: /runner
                  readOnly: true
                - name: offsite
                  mountPath: /secrets/offsite
                  readOnly: true
              resources:
                requests:
                  cpu: 100m
                  memory: 256Mi
                limits:
                  cpu: "1"
                  memory: 1Gi
          volumes:
            - name: runner
              configMap:
                name: cnpg-option-a-runner
                defaultMode: 0755
            - name: offsite
              secret:
                secretName: cnpg-backup-offsite
---
apiVersion: batch/v1
kind: CronJob
metadata:
  name: cnpg-logical-backup-state-hub-db
  namespace: databases
  labels:
    app.kubernetes.io/part-of: railiance-apps
    railiance.apps/backup-lane: option-a
    railiance.apps/backup-cluster: state-hub-db
spec:
  schedule: "45 2 * * *"
  suspend: true
  concurrencyPolicy: Forbid
  successfulJobsHistoryLimit: 3
  failedJobsHistoryLimit: 3
  jobTemplate:
    spec:
      backoffLimit: 1
      activeDeadlineSeconds: 7200
      template:
        metadata:
          labels:
            railiance.apps/backup-lane: option-a
            railiance.apps/backup-cluster: state-hub-db
        spec:
          serviceAccountName: cnpg-logical-backup
          restartPolicy: Never
          containers:
            - name: backup
              image: alpine/k8s:1.31.12
              imagePullPolicy: IfNotPresent
              env:
                - name: CLUSTER
                  value: state-hub-db
                - name: DATABASES
                  value: state_hub
                - name: NAMESPACE
                  value: databases
              command: ["/bin/sh", "/runner/run-backup.sh"]
              volumeMounts:
                - name: runner
                  mountPath: /runner
                  readOnly: true
                - name: offsite
                  mountPath: /secrets/offsite
                  readOnly: true
              resources:
                requests:
                  cpu: 100m
                  memory: 256Mi
                limits:
                  cpu: "1"
                  memory: 1Gi
          volumes:
            - name: runner
              configMap:
                name: cnpg-option-a-runner
                defaultMode: 0755
            - name: offsite
              secret:
                secretName: cnpg-backup-offsite