-- 1) Tabela profiles
create table if not exists public.profiles (
  id uuid primary key references auth.users(id) on delete cascade,
  role text not null default 'patient' check (role in ('admin','therapist','patient')),
  full_name text,
  created_at timestamptz not null default now(),
  updated_at timestamptz not null default now()
);

-- 2) updated_at automático
create or replace function public.set_updated_at()
returns trigger
language plpgsql
as $$
begin
  new.updated_at = now();
  return new;
end;
$$;

drop trigger if exists trg_profiles_updated_at on public.profiles;
create trigger trg_profiles_updated_at
before update on public.profiles
for each row execute function public.set_updated_at();

-- 3) Trigger: cria profile automaticamente quando usuário nasce no auth
create or replace function public.handle_new_user()
returns trigger
language plpgsql
security definer
set search_path = public
as $$
begin
  insert into public.profiles (id, role)
  values (new.id, 'patient')
  on conflict (id) do nothing;

  return new;
end;
$$;

drop trigger if exists on_auth_user_created on auth.users;
create trigger on_auth_user_created
after insert on auth.users
for each row execute function public.handle_new_user();