/**
 * Synology SSO 로그인 시작
 * GET /api/auth/synology
 * 
 * Synology SSO Server OAuth 2.0 인증 페이지로 리다이렉트
 */
export default defineEventHandler(async (event) => {
  // 하드코딩 테스트
  const synologyServerUrl = 'https://sso.osolit.net'
  const synologyClientId = 'afa90b7b4a9773af41f2c7b110f92d6e'
  const synologyRedirectUri = 'https://weeklyreport.turbosoft.kr/api/auth/synology/callback'
  
  // Synology SSO Server OAuth 인증 URL
  const authUrl = new URL(`${synologyServerUrl}/webman/sso/SSOOauth.cgi`)
  authUrl.searchParams.set('response_type', 'code')
  authUrl.searchParams.set('client_id', synologyClientId)
  authUrl.searchParams.set('redirect_uri', synologyRedirectUri)
  authUrl.searchParams.set('scope', 'user_id')
  authUrl.searchParams.set('state', crypto.randomUUID())
  
  return sendRedirect(event, authUrl.toString())
})