import { createClient } from '@supabase/supabase-js'

let cachedClient: ReturnType<typeof createClient> | null = null

export function getSupabaseAdminClient() {
  if (cachedClient) return cachedClient

  const supabaseUrl = Bun.env.SUPABASE_URL ?? Bun.env.VITE_SUPABASE_URL
  const supabaseServiceRoleKey = Bun.env.SUPABASE_SERVICE_ROLE_KEY

  if (!supabaseUrl || !supabaseServiceRoleKey) {
    throw new Error(
      'Missing Supabase admin env vars. Set SUPABASE_URL and SUPABASE_SERVICE_ROLE_KEY in backend environment.',
    )
  }

  cachedClient = createClient(supabaseUrl, supabaseServiceRoleKey, {
    auth: {
      autoRefreshToken: false,
      persistSession: false,
      detectSessionInUrl: false,
    },
  })

  return cachedClient
}