begin;

create index if not exists payment_orders_created_status_idx on public.payment_orders(created_at desc, status);

create or replace function public.get_payment_order_stats(p_from timestamptz default null, p_to timestamptz default null)
returns table (total_orders bigint, paid_orders bigint, pending_orders bigint, failed_expired_orders bigint, paid_amount_cents bigint, granted_credits bigint)
language sql security definer set search_path = public, pg_temp
as $$
  select
    count(*)::bigint,
    count(*) filter (where status = 'paid')::bigint,
    count(*) filter (where status = 'pending')::bigint,
    count(*) filter (where status in ('failed', 'expired'))::bigint,
    coalesce(sum(money_cents) filter (where status = 'paid'), 0)::bigint,
    coalesce(sum(credits) filter (where status = 'paid'), 0)::bigint
  from public.payment_orders
  where (p_from is null or created_at >= p_from)
    and (p_to is null or created_at <= p_to);
$$;
revoke all on function public.get_payment_order_stats(timestamptz, timestamptz) from public, anon, authenticated;
grant execute on function public.get_payment_order_stats(timestamptz, timestamptz) to service_role;

commit;