-- Create categories table
create table if not exists categories (
  id uuid default gen_random_uuid() primary key,
  name text not null,
  slug text not null unique,
  description text,
  image_url text,
  created_at timestamp with time zone default timezone('utc'::text, now()) not null
);

-- Enable RLS
alter table categories enable row level security;

-- Policies
create policy "Public categories are viewable by everyone."
  on categories for select
  using ( true );

create policy "Admins can insert categories."
  on categories for insert
  with check (
    exists (
      select 1 from profiles
      where profiles.id = auth.uid() and profiles.role = 'admin'
    )
  );

create policy "Admins can update categories."
  on categories for update
  using (
    exists (
      select 1 from profiles
      where profiles.id = auth.uid() and profiles.role = 'admin'
    )
  );

create policy "Admins can delete categories."
  on categories for delete
  using (
    exists (
      select 1 from profiles
      where profiles.id = auth.uid() and profiles.role = 'admin'
    )
  );