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24 lines
1.2 KiB
PL/PgSQL
24 lines
1.2 KiB
PL/PgSQL
-- KI-Demos der Vorlagen: Zähler pro Variante und Tag als Kostenbremse für öffentliche Links
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create table public.ai_usage (
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variant_id uuid not null references public.template_variants(id) on delete cascade,
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day date not null default current_date,
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requests integer not null default 0,
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primary key (variant_id, day)
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);
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alter table public.ai_usage enable row level security;
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create policy admin_select on public.ai_usage for select to authenticated
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using ((select public.is_admin()));
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-- Zählt eine Anfrage und meldet, ob sie noch im Tageslimit liegt. Nur der Server (service_role) ruft das auf.
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create or replace function public.consume_ai_quota(p_variant_id uuid, p_limit integer)
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returns boolean language sql volatile security definer set search_path = '' as $$
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insert into public.ai_usage as u (variant_id, day, requests)
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values (p_variant_id, current_date, 1)
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on conflict (variant_id, day) do update set requests = u.requests + 1
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returning requests <= p_limit;
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$$;
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revoke all on function public.consume_ai_quota(uuid, integer) from public, anon, authenticated;
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grant execute on function public.consume_ai_quota(uuid, integer) to service_role;
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