import { NativeModules, Platform } from 'react-native'

interface E2eRuntimeCandidate {
  e2eTestBuild?: unknown
  supabaseUrlOverride?: unknown
  supabaseAnonKeyOverride?: unknown
}

export function resolveMobileE2eSupabaseOverride(
  candidate: E2eRuntimeCandidate | undefined,
  platform: string,
): { url: string; anonKey: string } | null {
  const url = typeof candidate?.supabaseUrlOverride === 'string'
    ? candidate.supabaseUrlOverride
    : ''
  const anonKey = typeof candidate?.supabaseAnonKeyOverride === 'string'
    ? candidate.supabaseAnonKeyOverride
    : ''
  if (url === '' && anonKey === '') return null

  if (
    platform !== 'android'
    || candidate?.e2eTestBuild !== true
    || url !== 'http://10.0.2.2:55321'
    || !/^sb_publishable_[A-Za-z0-9_-]{20,}$/.test(anonKey)
  ) {
    throw new Error('mobile_e2e_supabase_override_invalid')
  }

  return { url, anonKey }
}

const override = resolveMobileE2eSupabaseOverride(
  NativeModules.D3ROConfig as E2eRuntimeCandidate | undefined,
  Platform.OS,
)

if (override !== null) {
  ;(
    globalThis as typeof globalThis & {
      __D3RO_MOBILE_E2E_SUPABASE__?: { url: string; anonKey: string }
    }
  ).__D3RO_MOBILE_E2E_SUPABASE__ = override
}