import { createClient, SupabaseClient } from '@supabase/supabase-js';

let _admin: SupabaseClient | null = null;

export function getSupabaseAdmin(): SupabaseClient {
  if (_admin) return _admin;
  const url = process.env.NEXT_PUBLIC_SUPABASE_URL;
  const key = process.env.SUPABASE_SERVICE_ROLE_KEY;
  if (!url || !key) {
    throw new Error('Supabase admin env not configured');
  }
  _admin = createClient(url, key, {
    auth: { autoRefreshToken: false, persistSession: false },
    global: {
      // Force every request the admin client makes (GoTrue listUsers and
      // PostgREST reads alike) to bypass Next's fetch Data Cache, so the admin
      // surface always reflects current state regardless of page config.
      fetch: (input: RequestInfo | URL, init?: RequestInit) =>
        fetch(input, { ...init, cache: 'no-store' }),
    },
  });
  return _admin;
}

export function getSupabaseAnon(): SupabaseClient {
  const url = process.env.NEXT_PUBLIC_SUPABASE_URL;
  const key = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY;
  if (!url || !key) {
    throw new Error('Supabase anon env not configured');
  }
  return createClient(url, key, {
    auth: { autoRefreshToken: false, persistSession: false },
  });
}