import { SUPABASE_ANON_KEY, SUPABASE_URL } from '@d3ro/core/supabase-config'

export interface AuthCapabilities {
  signUpEnabled: boolean
  emailEnabled: boolean
  googleEnabled: boolean
  githubEnabled: boolean
  appleEnabled: boolean
}

interface AuthSettingsResponse {
  disable_signup?: boolean
  external?: {
    email?: boolean
    google?: boolean
    github?: boolean
    apple?: boolean
  }
}

let cachedCapabilities: AuthCapabilities | null = null

export async function getAuthCapabilities(forceRefresh = false): Promise<AuthCapabilities> {
  if (!forceRefresh && cachedCapabilities !== null) return cachedCapabilities

  const response = await fetch(`${SUPABASE_URL}/auth/v1/settings`, {
    headers: { apikey: SUPABASE_ANON_KEY },
  })

  if (!response.ok) {
    throw new Error(`Auth settings request failed with status ${response.status}`)
  }

  const settings = await response.json() as AuthSettingsResponse
  const external = settings.external ?? {}
  cachedCapabilities = {
    signUpEnabled: settings.disable_signup !== true,
    emailEnabled: external.email === true,
    googleEnabled: external.google === true,
    githubEnabled: external.github === true,
    appleEnabled: external.apple === true,
  }
  return cachedCapabilities
}