import { getSession, refreshSession, getSessionIdFromCookie, deleteSessionCookie } from '../../utils/session'

/**
 * 현재 로그인 사용자 정보
 * GET /api/auth/current-user
 */
export default defineEventHandler(async (event) => {
  const sessionId = getSessionIdFromCookie(event)
  
  if (!sessionId) {
    return { user: null }
  }
  
  // DB에서 세션 조회
  const session = await getSession(sessionId)
  
  if (!session) {
    // 세션이 만료되었거나 없음 → 쿠키 삭제
    deleteSessionCookie(event)
    return { user: null }
  }
  
  // 사용자 정보 조회
  const employee = await queryOne<any>(`
    SELECT * FROM wr_employee_info 
    WHERE employee_id = $1 AND is_active = true
  `, [session.employeeId])
  
  if (!employee) {
    deleteSessionCookie(event)
    return { user: null }
  }
  
  // 세션 갱신 (Sliding Expiration - 10분 연장)
  await refreshSession(sessionId)
  
  // 로그인 이력의 last_active_at도 업데이트
  if (session.loginHistoryId) {
    await execute(`
      UPDATE wr_login_history 
      SET last_active_at = NOW()
      WHERE history_id = $1
    `, [session.loginHistoryId])
  }
  
  return {
    user: {
      employeeId: employee.employee_id,
      employeeName: employee.employee_name,
      employeeEmail: employee.employee_email,
      employeePosition: employee.employee_position
    }
  }
})