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

const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL!
const supabaseAnonKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!

if (!supabaseUrl || !supabaseAnonKey) {
  throw new Error('Missing Supabase environment variables. Check your .env.local file.')
}

/**
 * Supabase client for client-side operations.
 * Uses anon key - safe for browser/frontend.
 * Row Level Security (RLS) policies apply.
 */
export const supabase = createClient(supabaseUrl, supabaseAnonKey, {
  auth: {
    persistSession: true,
    autoRefreshToken: true,
  },
})