apiVersion: postgresql.cnpg.io/v1
kind: Cluster
metadata:
  name: knoe-db
spec:
  instances: 3
  enablePDB: false
  imageName: ${KNOE_IMAGE_REGISTRY}/knoe-db:${KNOE_DB_IMAGE_TAG}
  postgresUID: 100
  postgresGID: 101
  maxSyncReplicas: 0
  affinity:
    # CloudNativePG uses its own affinity schema (not corev1.Affinity). See: `kubectl explain cluster.spec.affinity`
    enablePodAntiAffinity: true
    podAntiAffinityType: preferred
    topologyKey: kubernetes.io/hostname
    tolerations:
      - key: "node-role.kubernetes.io/control-plane"
        operator: "Exists"
        effect: "NoSchedule"
      - key: "node-role.kubernetes.io/master"
        operator: "Exists"
        effect: "NoSchedule"
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
          - matchExpressions:
              - key: node.kubernetes.io/instance-type
                operator: In
                values:
                  - k3s

  postgresql:
    parameters:
      shared_buffers: 256MB
      pg_stat_statements.max: '10000'
      pg_stat_statements.track: all
      # pg_knoe_auth GUCs — active when oauthbearer pg_hba entries are enabled (requires PG18)
      pg_knoe_auth.issuer: https://api.prole.org/auth
      pg_knoe_auth.audience: knoe-db
      pg_knoe_auth.role_claim: preferred_username
      pg_knoe_auth.usermap_required: 'true'
    shared_preload_libraries:
      - pg_stat_statements
      - pg_tde
      - pg_knoe_auth
    pg_hba:
      # allow password access from remote hosts if environment is "#dev"
      - local all postgres trust
      - local all knoe scram-sha-256
      - host all postgres all scram-sha-256
      - host knoe knoe-db all scram-sha-256
      - host all all all scram-sha-256
      - hostssl knoe knoe-db all scram-sha-256
      # OAUTHBEARER via pg_knoe_auth — requires PG18 + knoe-db image with pg_knoe_auth installed.
      # Activate by uncommenting. JWT issued by api.prole.org/auth; preferred_username → pg_ident.
      # - hostssl knoe-db knoe all oauthbearer issuer="https://api.prole.org/auth"
      # - host all all all gss include_realm=1 krb_realm=EXAMPLE.COM

  bootstrap:
    initdb:
      database: knoe-db
      owner: knoe
      localeCollate: 'en_US.utf8'
      localeCType: 'en_US.utf8'
      secret:
        name: knoe-db-user
      postInitTemplateSQL:
        # Supabase convention: relocatable extensions live in `extensions`,
        # not `public`. Studio's Database Advisor flags `public.pg_stat_statements`
        # as a Security warning on the dashboard.
        - CREATE SCHEMA IF NOT EXISTS extensions;
        - CREATE EXTENSION IF NOT EXISTS pg_stat_statements SCHEMA extensions;
      postInitSQL:
        - DO $$ BEGIN IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = 'knoe') THEN CREATE ROLE knoe LOGIN NOSUPERUSER NOCREATEDB NOCREATEROLE INHERIT; END IF; END $$;
        - DO $$ DECLARE owner_password text; BEGIN SELECT rolpassword INTO owner_password FROM pg_authid WHERE rolname = 'knoe'; IF owner_password IS NOT NULL THEN EXECUTE format('ALTER ROLE knoe PASSWORD %L', owner_password); END IF; END $$;
        - DO $$ BEGIN IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = 'knoe_catalog_executor') THEN CREATE ROLE knoe_catalog_executor NOLOGIN; END IF; END $$;
        - CREATE SCHEMA IF NOT EXISTS knoe AUTHORIZATION knoe;
        - ALTER SCHEMA knoe OWNER TO knoe;
        - REVOKE ALL ON SCHEMA knoe FROM PUBLIC;
        - ALTER ROLE knoe SET search_path TO knoe, public;
        - CREATE EXTENSION IF NOT EXISTS pg_tde SCHEMA knoe;
        - CREATE EXTENSION IF NOT EXISTS pgcrypto SCHEMA knoe;
        - CREATE EXTENSION IF NOT EXISTS postgis SCHEMA knoe;
        - CREATE EXTENSION IF NOT EXISTS postgis_topology SCHEMA knoe;
        - CREATE EXTENSION IF NOT EXISTS vector SCHEMA knoe;
        - CREATE EXTENSION IF NOT EXISTS tds_fdw SCHEMA knoe;
        - GRANT USAGE ON SCHEMA knoe TO knoe;
        - GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA knoe TO knoe;
        - GRANT USAGE ON SCHEMA knoe TO knoe_catalog_executor;
        - GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA knoe TO knoe_catalog_executor;
        - ALTER DEFAULT PRIVILEGES FOR ROLE knoe IN SCHEMA knoe GRANT EXECUTE ON FUNCTIONS TO knoe_catalog_executor;
        - GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA topology TO knoe;
        - CREATE SCHEMA IF NOT EXISTS storage;
        - CREATE SCHEMA IF NOT EXISTS graphql_public;
        - DO $$ BEGIN IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = 'anon') THEN CREATE ROLE anon NOLOGIN; END IF; END $$;
        - DO $$ BEGIN IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = 'authenticator') THEN CREATE ROLE authenticator LOGIN; END IF; END $$;
        - GRANT USAGE ON SCHEMA public TO anon;
        - GRANT USAGE ON SCHEMA storage TO anon;
        - GRANT USAGE ON SCHEMA graphql_public TO anon;
        - GRANT anon TO authenticator;
        # Task 4: align knoe.user with ekosystem user UUIDs
        - ALTER TABLE knoe.user ADD COLUMN IF NOT EXISTS ekosystem_uuid text UNIQUE;
      postInitApplicationSQLRefs:
        configMapRefs:
          - name: knoe-ekosystem-sql
            key: ekosystem.sql
          - name: knoe-ekosystem-sql
            key: ekosystem_objects.sql

  certificates:
    serverAltDNSNames:
      - pg.prole.org
      - knoe-db-rw.knoe-db.svc.cluster.local

  enableSuperuserAccess: true
  env:
    - name: AWS_REGION
      value: garage
    - name: AWS_DEFAULT_REGION
      value: garage

  storage:
    size: 1Gi
    pvcTemplate:
      accessModes:
        - ReadWriteOnce
      resources:
        requests:
          storage: 1Gi
      storageClassName: synology-iscsi
      selector:
        matchLabels:
          synology.storage/role: data
  walStorage:
    size: 1Gi
    pvcTemplate:
      accessModes:
        - ReadWriteOnce
      resources:
        requests:
          storage: 1Gi
      storageClassName: synology-iscsi
      selector:
        matchLabels:
          synology.storage/role: wal
  plugins:
  - name: barman-cloud.cloudnative-pg.io
    parameters:
      barmanObjectName: knoe-db-barman-objectstore

  monitoring:
    enablePodMonitor: false