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

/**
 * 본인 로그인 이력 조회
 * GET /api/auth/login-history
 */
export default defineEventHandler(async (event) => {
  const sessionId = getSessionIdFromCookie(event)
  
  if (!sessionId) {
    throw createError({ statusCode: 401, message: '로그인이 필요합니다.' })
  }
  
  const session = await getSession(sessionId)
  
  if (!session) {
    deleteSessionCookie(event)
    throw createError({ statusCode: 401, message: '세션이 만료되었습니다.' })
  }
  
  // 현재 활성 세션 ID 목록 조회
  const activeSessions = await query<any>(`
    SELECT login_history_id FROM wr_session 
    WHERE employee_id = $1 AND expires_at > NOW()
  `, [session.employeeId])
  
  const activeHistoryIds = new Set(activeSessions.map(s => s.login_history_id))
  
  // 로그인 이력 조회
  const history = await query<any>(`
    SELECT 
      history_id,
      login_at,
      login_ip,
      logout_at,
      logout_ip,
      last_active_at
    FROM wr_login_history
    WHERE employee_id = $1
    ORDER BY login_at DESC
    LIMIT 50
  `, [session.employeeId])
  
  const SESSION_TIMEOUT_MS = SESSION_TIMEOUT_MINUTES * 60 * 1000
  const now = Date.now()
  
  return {
    history: history.map(h => {
      const isCurrentSession = h.history_id === session.loginHistoryId
      const isActiveSession = activeHistoryIds.has(h.history_id)
      
      // 세션 상태 판단
      let sessionStatus: 'active' | 'logout' | 'expired'
      if (h.logout_at) {
        sessionStatus = 'logout'
      } else if (isActiveSession) {
        sessionStatus = 'active'
      } else {
        // 활성 세션에 없으면 만료
        sessionStatus = 'expired'
      }
      
      return {
        historyId: h.history_id,
        loginAt: h.login_at,
        loginIp: h.login_ip,
        logoutAt: h.logout_at,
        logoutIp: h.logout_ip,
        lastActiveAt: h.last_active_at,
        isCurrentSession,
        sessionStatus
      }
    })
  }
})