alter table public.badges
  add column if not exists metadata jsonb not null default '{}'::jsonb;

alter table public.user_badges
  add column if not exists metadata jsonb not null default '{}'::jsonb;

with ranked_badges as (
  select id,
         row_number() over (
           partition by tenant_id, user_id, badge_id
           order by granted_at asc nulls last, created_at asc, id asc
         ) as rn
  from public.user_badges
  where user_id is not null
    and badge_id is not null
)
delete from public.user_badges ub
using ranked_badges rb
where ub.id = rb.id
  and rb.rn > 1;

create unique index if not exists idx_user_badges_user_badge_unique
  on public.user_badges(tenant_id, user_id, badge_id);

create index if not exists idx_badges_tenant_category_active
  on public.badges(tenant_id, category, is_active, sort_order);

create index if not exists idx_user_badges_tenant_user_granted
  on public.user_badges(tenant_id, user_id, granted_at desc nulls last, created_at desc);