import { NextRequest, NextResponse } from 'next/server'
import { createAuthnRequest } from '../../[...nextauth]/saml/utils'

const samlEnvironment = {
  NODE_ENV: process.env.NODE_ENV,
  SAML_USE_MOCKUP: process.env.SAML_USE_MOCKUP,
  NEXTAUTH_URL: process.env.NEXTAUTH_URL,
}

// 환경변수 체크
function checkEnvironment() {
  console.log('📊 Environment check:', JSON.stringify(samlEnvironment, null, 2))

}

// 요청 받으면 따로 파싱할 것 없이 동일하게 행동하므로 아규먼트 없음
export async function GET() {
  console.log('🚀 SAML AuthnRequest API started')
  checkEnvironment()

  try {
    console.log('SSO STEP 1: Create AuthnRequest')
    
    const startTime = Date.now()
    const loginUrl = await createAuthnRequest()
    const endTime = Date.now()
    
    console.log('SAML AuthnRequest created successfully:', {
      url: loginUrl,
      urlLength: loginUrl.length,
      processingTime: `${endTime - startTime}ms`,
      timestamp: new Date().toISOString()
    })
    
    return NextResponse.json({
      loginUrl,
      success: true,
      mode: 'real',
      message: 'Using real SAML IdP'
    })
  } catch (error) {
    console.error('Failed to create SAML AuthnRequest:', {
      error: error instanceof Error ? error.message : 'Unknown error',
      stack: error instanceof Error ? error.stack : undefined,
      timestamp: new Date().toISOString()
    })
    
    return NextResponse.json({
      error: 'Failed to create SAML AuthnRequest',
      details: error instanceof Error ? error.message : 'Unknown error',
      success: false
    }, { status: 500 })
  }
}