-- 1. Add missing columns if they don't exist
DO $$
BEGIN
    IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name = 'users' AND column_name = 'full_name') THEN
        ALTER TABLE public.users ADD COLUMN full_name text;
    END IF;

    IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name = 'users' AND column_name = 'avatar_url') THEN
        ALTER TABLE public.users ADD COLUMN avatar_url text;
    END IF;

    IF NOT EXISTS (SELECT 1 FROM information_schema.columns WHERE table_name = 'users' AND column_name = 'credits') THEN
        ALTER TABLE public.users ADD COLUMN credits integer default 5;
    END IF;
END $$;

-- 2. Create the Trigger Function (Updated to be safe)
create or replace function public.handle_new_user()
returns trigger as $$
begin
  insert into public.users (id, email, full_name, avatar_url, credits)
  values (
    new.id,
    new.email,
    new.raw_user_meta_data->>'full_name',
    new.raw_user_meta_data->>'avatar_url',
    5
  )
  ON CONFLICT (id) DO UPDATE SET
    email = EXCLUDED.email,
    full_name = EXCLUDED.full_name,
    avatar_url = EXCLUDED.avatar_url;
  return new;
end;
$$ language plpgsql security definer;

-- 3. Create the Trigger
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 procedure public.handle_new_user();

-- 4. Backfill existing users
insert into public.users (id, email, full_name, avatar_url, credits)
select 
    id, 
    email, 
    raw_user_meta_data->>'full_name', 
    raw_user_meta_data->>'avatar_url', 
    5
from auth.users
where id not in (select id from public.users);