// apps/mobile/lib/supabase.ts
// React Native용 Supabase 클라이언트 — AsyncStorage 어댑터 + URL polyfill

import 'react-native-url-polyfill/auto'
import AsyncStorage from '@react-native-async-storage/async-storage'
import { createClient, type SupabaseClient } from '@supabase/supabase-js'
import Constants from 'expo-constants'

const supabaseUrl = (Constants.expoConfig?.extra?.supabaseUrl as string | undefined) ?? ''
const supabaseAnonKey = (Constants.expoConfig?.extra?.supabaseAnonKey as string | undefined) ?? ''

export function isSupabaseConfigured(): boolean {
  return Boolean(supabaseUrl && supabaseAnonKey)
}

function createSupabaseClient(): SupabaseClient {
  if (!isSupabaseConfigured()) {
    // env 미설정 시에도 크래시 방지용 더미 클라이언트 생성
    // 런타임에서 isSupabaseConfigured()로 체크 후 사용
    return createClient('https://localhost.invalid', 'no-key', {
      auth: { storage: AsyncStorage, persistSession: false, detectSessionInUrl: false }
    })
  }

  return createClient(supabaseUrl, supabaseAnonKey, {
    auth: {
      storage: AsyncStorage,
      autoRefreshToken: true,
      persistSession: true,
      detectSessionInUrl: false
    }
  })
}

export const supabase = createSupabaseClient()