# Självhostad Postgres för Guidad Felsökning.
# För produktion rekommenderas CloudNativePG-operatorn (automatiska
# säkerhetskopior, failover, PITR) — den här StatefulSet:en är den enkla
# grundplattan med samma schema.
apiVersion: v1
kind: ConfigMap
metadata:
  name: postgres-init
  namespace: guidad-felsokning
data:
  # Körs vid första starten. Append-only garanteras med triggers —
  # historiken kan inte ändras eller raderas oavsett vilken roll som
  # ansluter.
  init.sql: |
    create extension if not exists pgcrypto;

    create table if not exists anvandare (
      id uuid primary key default gen_random_uuid(),
      epost text unique not null,
      losen_hash text not null,
      namn text not null,
      skapad timestamptz not null default now()
    );

    create table if not exists felsokning_arenden (
      id text primary key,
      nummer integer not null,
      skapad timestamptz not null,
      delningskod text unique,
      metodik_id text,
      skapad_av uuid references anvandare(id),
      insatt timestamptz not null default now()
    );

    create table if not exists felsokning_handelser (
      id text primary key,
      arende_id text not null references felsokning_arenden(id),
      tidpunkt timestamptz not null,
      anvandare text not null,
      handelse jsonb not null,
      insatt timestamptz not null default now()
    );
    create index if not exists felsokning_handelser_arende_idx
      on felsokning_handelser (arende_id, tidpunkt);

    create or replace function forbjud_andring() returns trigger
    language plpgsql as $$
    begin
      raise exception 'Loggen är append-only — historik kan inte ändras eller raderas';
    end $$;

    drop trigger if exists handelser_append_only on felsokning_handelser;
    create trigger handelser_append_only
      before update or delete on felsokning_handelser
      for each row execute function forbjud_andring();

    drop trigger if exists arenden_append_only on felsokning_arenden;
    create trigger arenden_append_only
      before update or delete on felsokning_arenden
      for each row execute function forbjud_andring();
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: postgres
  namespace: guidad-felsokning
spec:
  serviceName: postgres
  replicas: 1
  selector:
    matchLabels: { app: postgres }
  template:
    metadata:
      labels: { app: postgres }
    spec:
      containers:
        - name: postgres
          image: postgres:17-alpine
          ports:
            - containerPort: 5432
          env:
            - name: POSTGRES_DB
              value: felsokning
            - name: POSTGRES_USER
              value: plattform
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef: { name: felsokning-hemligheter, key: postgres-losenord }
            - name: PGDATA
              value: /var/lib/postgresql/data/pgdata
          volumeMounts:
            - name: data
              mountPath: /var/lib/postgresql/data
            - name: init
              mountPath: /docker-entrypoint-initdb.d
          resources:
            requests: { cpu: 250m, memory: 256Mi }
            limits: { cpu: "1", memory: 1Gi }
          readinessProbe:
            exec:
              command: ["pg_isready", "-U", "plattform", "-d", "felsokning"]
            initialDelaySeconds: 5
      volumes:
        - name: init
          configMap: { name: postgres-init }
  volumeClaimTemplates:
    - metadata:
        name: data
      spec:
        accessModes: [ReadWriteOnce]
        resources:
          requests:
            storage: 10Gi
---
apiVersion: v1
kind: Service
metadata:
  name: postgres
  namespace: guidad-felsokning
spec:
  selector: { app: postgres }
  ports:
    - port: 5432