since3-portal/lib/supabase/migrations/20260930120000_product_checks.sql

-- Erreichbarkeitsprüfungen für Produkte (manuell per Button + beim Seitenaufruf)
create table public.product_checks (
  id           bigint generated always as identity primary key,
  product_id   uuid not null references public.client_products(id) on delete cascade,
  client_id    uuid not null references public.clients(id) on delete cascade,
  checked_at   timestamptz not null default now(),
  ok           boolean not null,
  status_code  int,
  response_ms  int,
  error        text
);

create index on public.product_checks (product_id, checked_at desc);

-- Lesen: Admin alles, Client nur eigene. Schreiben bewusst ohne Policy:
-- Ergebnisse schreibt nur der Server (Service Role), damit Clients ihre Uptime nicht fälschen können.
alter table public.product_checks enable row level security;

create policy admin_select on public.product_checks for select to authenticated
  using ((select public.is_admin()));

create policy client_select on public.product_checks for select to authenticated
  using (client_id = (select public.current_client_id()));

-- Letzte Prüfung + Uptime der letzten 30 Tage je Produkt
create view public.product_check_summary with (security_invoker = true) as
select
  p.id as product_id,
  last.checked_at,
  last.ok,
  last.status_code,
  last.response_ms,
  last.error,
  stats.checks_30d,
  stats.uptime_30d
from public.client_products p
left join lateral (
  select c.checked_at, c.ok, c.status_code, c.response_ms, c.error
  from public.product_checks c
  where c.product_id = p.id
  order by c.checked_at desc
  limit 1
) last on true
left join lateral (
  select
    count(*)::int as checks_30d,
    round(100.0 * count(*) filter (where c.ok) / nullif(count(*), 0), 2) as uptime_30d
  from public.product_checks c
  where c.product_id = p.id
    and c.checked_at > now() - interval '30 days'
) stats on true;