add scanning

src/lib/scheduler.ts

@@ -0,0 +1,39 @@
+import cron, { type ScheduledTask } from 'node-cron'
+import { getScanConfig } from './app-settings'
+import { runFullScan } from './scanner'
+
+let scheduledTask: ScheduledTask | null = null
+
+export function startScheduler(): void {
+  const { schedule, enabled } = getScanConfig()
+
+  if (!enabled) {
+    console.log('[scheduler] Scanning is disabled — scheduler not started')
+    return
+  }
+
+  if (!cron.validate(schedule)) {
+    console.error(`[scheduler] Invalid cron expression "${schedule}" — scheduler not started`)
+    return
+  }
+
+  scheduledTask = cron.schedule(schedule, () => {
+    console.log('[scheduler] Cron triggered — running full scan')
+    runFullScan().catch((err) => console.error('[scheduler] Scan error:', err))
+  })
+
+  console.log(`[scheduler] Started with schedule: ${schedule}`)
+}
+
+export function stopScheduler(): void {
+  if (scheduledTask) {
+    scheduledTask.stop()
+    scheduledTask = null
+    console.log('[scheduler] Stopped')
+  }
+}
+
+export function restartScheduler(): void {
+  stopScheduler()
+  startScheduler()
+}