import { getDb } from '../../../utils/db'

export default defineEventHandler((event) => {
  const query = getQuery(event)
  const targetId = query.target_id as string
  const period = (query.period as string) || '1h'
  
  if (!targetId) {
    throw createError({
      statusCode: 400,
      message: 'target_id is required'
    })
  }
  
  // 기간별 시간 계산
  const periodMap: Record<string, string> = {
    '1h': '-1 hour',
    '2h': '-2 hours',
    '3h': '-3 hours',
    '4h': '-4 hours',
    '5h': '-5 hours',
    '6h': '-6 hours',
    '12h': '-12 hours',
    '18h': '-18 hours',
    '24h': '-24 hours',
    '7d': '-7 days',
    '30d': '-30 days'
  }
  
  const timeOffset = periodMap[period] || '-1 hour'
  
  const db = getDb()
  
  const snapshots = db.prepare(`
    SELECT 
      snapshot_id,
      cpu_percent,
      cpu_temp,
      load_percent,
      memory_percent,
      memory_used,
      memory_total,
      swap_percent,
      swap_used,
      swap_total,
      is_online,
      collected_at
    FROM server_snapshots
    WHERE target_id = ?
      AND collected_at >= datetime('now', 'localtime', ?)
    ORDER BY collected_at ASC
  `).all(targetId, timeOffset)
  
  return {
    target_id: targetId,
    period,
    data: snapshots
  }
})