시스템 모니터

backend/api/anomaly/chart.get.ts

@@ -0,0 +1,80 @@
+import { getDb } from '../../utils/db'
+
+export default defineEventHandler(async (event) => {
+  const db = getDb()
+  const query = getQuery(event)
+  
+  const type = query.type as string || 'short-term'
+  const period = query.period as string || '24h'
+  
+  // 기간/간격 계산
+  let intervalClause = ''
+  let groupFormat = ''
+  
+  if (period === '1h') {
+    intervalClause = `'-1 hours'`
+    groupFormat = '%Y-%m-%d %H:%M'  // 분 단위
+  } else if (period === '6h') {
+    intervalClause = `'-6 hours'`
+    groupFormat = '%Y-%m-%d %H:00' // 시간 단위
+  } else if (period === '12h') {
+    intervalClause = `'-12 hours'`
+    groupFormat = '%Y-%m-%d %H:00'
+  } else if (period === '24h') {
+    intervalClause = `'-24 hours'`
+    groupFormat = '%Y-%m-%d %H:00'
+  } else if (period === '7d') {
+    intervalClause = `'-7 days'`
+    groupFormat = '%Y-%m-%d'  // 일 단위
+  } else if (period === '30d') {
+    intervalClause = `'-30 days'`
+    groupFormat = '%Y-%m-%d'
+  } else {
+    intervalClause = `'-24 hours'`
+    groupFormat = '%Y-%m-%d %H:00'
+  }
+  
+  // 시간대별 집계
+  const rows = db.prepare(`
+    SELECT 
+      strftime('${groupFormat}', detected_at) as time_slot,
+      SUM(CASE WHEN level = 'warning' THEN 1 ELSE 0 END) as warning,
+      SUM(CASE WHEN level = 'danger' THEN 1 ELSE 0 END) as danger
+    FROM anomaly_logs
+    WHERE detect_type = ?
+      AND detected_at >= datetime('now', ${intervalClause}, 'localtime')
+    GROUP BY time_slot
+    ORDER BY time_slot ASC
+  `).all(type) as any[]
+  
+  // 시간 포맷 변환
+  const data = rows.map(r => ({
+    time: formatTimeLabel(r.time_slot, period),
+    warning: r.warning,
+    danger: r.danger
+  }))
+  
+  return {
+    data,
+    type,
+    period,
+    timestamp: new Date().toISOString()
+  }
+})
+
+function formatTimeLabel(timeSlot: string, period: string): string {
+  if (!timeSlot) return ''
+  
+  if (period === '7d' || period === '30d') {
+    // 일 단위: MM/DD
+    const parts = timeSlot.split('-')
+    return `${parts[1]}/${parts[2]}`
+  } else {
+    // 시간 단위: HH:MM
+    const parts = timeSlot.split(' ')
+    if (parts.length === 2) {
+      return parts[1].substring(0, 5)
+    }
+    return timeSlot.substring(11, 16)
+  }
+}